Mercurial > repos > blastem
annotate vdp.c @ 720:15d9359fd771
Add some tests for hint timing and fix it properly this time.
author | Michael Pavone <pavone@retrodev.com> |
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date | Wed, 20 May 2015 22:27:51 -0700 |
parents | 019d27995e32 |
children | 8f5339961903 |
rev | line source |
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1 /* |
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2 Copyright 2013 Michael Pavone |
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Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
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3 This file is part of BlastEm. |
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. |
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5 */ |
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6 #include "vdp.h" |
75 | 7 #include "blastem.h" |
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8 #include <stdlib.h> |
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9 #include <string.h> |
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10 #include "render.h" |
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11 |
622
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Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
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12 #define NTSC_INACTIVE_START 224 |
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13 #define PAL_INACTIVE_START 240 |
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14 #define BUF_BIT_PRIORITY 0x40 |
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15 #define MAP_BIT_PRIORITY 0x8000 |
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16 #define MAP_BIT_H_FLIP 0x800 |
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17 #define MAP_BIT_V_FLIP 0x1000 |
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18 |
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19 #define SCROLL_BUFFER_SIZE 32 |
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20 #define SCROLL_BUFFER_MASK (SCROLL_BUFFER_SIZE-1) |
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21 #define SCROLL_BUFFER_DRAW (SCROLL_BUFFER_SIZE/2) |
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22 |
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23 #define MCLKS_SLOT_H40 16 |
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24 #define MCLKS_SLOT_H32 20 |
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25 #define VINT_SLOT_H40 4 //21 slots before HSYNC, 16 during, 10 after |
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Adjust H32 vint slot in response to latest test ROM data
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26 #define VINT_SLOT_H32 4 //old value was 23, but recent tests suggest the actual value is close to the H40 one |
697
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Sync fixes and logging to fix more sync issues
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27 #define HSYNC_SLOT_H40 234 |
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28 #define HSYNC_END_H40 (HSYNC_SLOT_H40+17) |
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Fixup VINT cycle and HBLANK flag for the previous timing fixes
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29 #define HSYNC_END_H32 (33 * MCLKS_SLOT_H32) |
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30 #define HBLANK_START_H40 178 //should be 179 according to Nemesis, but 178 seems to fit slightly better with my test ROM results |
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31 #define HBLANK_END_H40 0 //should be 5.5 according to Nemesis, but 0 seems to fit better with my test ROM results |
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32 #define HBLANK_START_H32 233 //should be 147 according to Nemesis which is very different from my test ROM result |
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33 #define HBLANK_END_H32 0 //should be 5 according to Nemesis, but 0 seems to fit better with my test ROM results |
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34 #define LINE_CHANGE_H40 165 |
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35 #define LINE_CHANGE_H32 132 |
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Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
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36 #define VBLANK_START_H40 (LINE_CHANGE_H40+2) |
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37 #define VBLANK_START_H32 (LINE_CHANGE_H32+2) |
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Implement FIFO latency and improve DMA accuracy
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38 #define FIFO_LATENCY 3 |
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39 |
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40 int32_t color_map[1 << 12]; |
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41 uint8_t levels[] = {0, 27, 49, 71, 87, 103, 119, 130, 146, 157, 174, 190, 206, 228, 255}; |
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42 |
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43 uint8_t debug_base[][3] = { |
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44 {127, 127, 127}, //BG |
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45 {0, 0, 127}, //A |
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46 {127, 0, 0}, //Window |
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47 {0, 127, 0}, //B |
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48 {127, 0, 127} //Sprites |
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49 }; |
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50 |
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51 uint8_t color_map_init_done; |
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52 |
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53 void init_vdp_context(vdp_context * context, uint8_t region_pal) |
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54 { |
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55 memset(context, 0, sizeof(*context)); |
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56 context->vdpmem = malloc(VRAM_SIZE); |
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57 memset(context->vdpmem, 0, VRAM_SIZE); |
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58 /* |
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59 */ |
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The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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60 if (headless) { |
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The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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61 context->oddbuf = context->framebuf = malloc(FRAMEBUF_ENTRIES * (32 / 8)); |
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62 memset(context->framebuf, 0, FRAMEBUF_ENTRIES * (32 / 8)); |
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The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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63 context->evenbuf = malloc(FRAMEBUF_ENTRIES * (32 / 8)); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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64 memset(context->evenbuf, 0, FRAMEBUF_ENTRIES * (32 / 8)); |
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The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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65 } else { |
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The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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66 render_alloc_surfaces(context); |
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67 } |
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68 context->framebuf = context->oddbuf; |
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69 context->linebuf = malloc(LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2); |
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70 memset(context->linebuf, 0, LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2); |
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71 context->tmp_buf_a = context->linebuf + LINEBUF_SIZE; |
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72 context->tmp_buf_b = context->tmp_buf_a + SCROLL_BUFFER_SIZE; |
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73 context->sprite_draws = MAX_DRAWS; |
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74 context->fifo_write = 0; |
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75 context->fifo_read = -1; |
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76 |
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77 if (!color_map_init_done) { |
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78 uint8_t b,g,r; |
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79 for (uint16_t color = 0; color < (1 << 12); color++) { |
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80 if (color & FBUF_SHADOW) { |
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81 b = levels[(color >> 9) & 0x7]; |
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82 g = levels[(color >> 5) & 0x7]; |
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83 r = levels[(color >> 1) & 0x7]; |
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84 } else if(color & FBUF_HILIGHT) { |
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85 b = levels[((color >> 9) & 0x7) + 7]; |
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86 g = levels[((color >> 5) & 0x7) + 7]; |
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87 r = levels[((color >> 1) & 0x7) + 7]; |
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88 } else { |
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89 b = levels[(color >> 8) & 0xE]; |
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90 g = levels[(color >> 4) & 0xE]; |
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91 r = levels[color & 0xE]; |
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92 } |
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93 color_map[color] = render_map_color(r, g, b); |
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94 } |
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95 color_map_init_done = 1; |
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96 } |
437
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97 for (uint8_t color = 0; color < (1 << (3 + 1 + 1 + 1)); color++) |
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98 { |
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99 uint8_t src = color & DBG_SRC_MASK; |
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100 if (src > DBG_SRC_S) { |
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101 context->debugcolors[color] = 0; |
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102 } else { |
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103 uint8_t r,g,b; |
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104 b = debug_base[src][0]; |
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105 g = debug_base[src][1]; |
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106 r = debug_base[src][2]; |
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107 if (color & DBG_PRIORITY) |
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108 { |
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109 if (b) { |
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110 b += 48; |
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111 } |
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112 if (g) { |
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113 g += 48; |
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114 } |
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115 if (r) { |
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116 r += 48; |
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117 } |
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118 } |
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119 if (color & DBG_SHADOW) { |
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120 b /= 2; |
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121 g /= 2; |
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122 r /=2 ; |
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123 } |
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124 if (color & DBG_HILIGHT) { |
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125 if (b) { |
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126 b += 72; |
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127 } |
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128 if (g) { |
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129 g += 72; |
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130 } |
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131 if (r) { |
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132 r += 72; |
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133 } |
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134 } |
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135 context->debugcolors[color] = render_map_color(r, g, b); |
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136 } |
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137 } |
623
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138 if (region_pal) { |
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139 context->flags2 |= FLAG2_REGION_PAL; |
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140 } |
20
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141 } |
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142 |
460
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143 int is_refresh(vdp_context * context, uint32_t slot) |
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144 { |
622
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145 if (context->regs[REG_MODE_4] & BIT_H40) { |
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146 return slot == 250 || slot == 26 || slot == 59 || slot == 90 || slot == 122 || slot == 154; |
460
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147 } else { |
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148 //TODO: Figure out which slots are refresh when display is off in 32-cell mode |
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149 //These numbers are guesses based on H40 numbers |
622
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150 return slot == 243 || slot == 19 || slot == 51 || slot == 83 || slot == 115; |
460
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151 //The numbers below are the refresh slots during active display |
622
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Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
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152 //return (slot == 29 || slot == 61 || slot == 93 || slot == 125); |
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153 } |
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|
154 } |
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155 |
21
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156 void render_sprite_cells(vdp_context * context) |
20
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157 { |
21
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158 if (context->cur_slot >= context->sprite_draws) { |
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159 sprite_draw * d = context->sprite_draw_list + context->cur_slot; |
450
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|
160 |
20
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161 uint16_t dir; |
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|
162 int16_t x; |
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163 if (d->h_flip) { |
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164 x = d->x_pos + 7; |
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165 dir = -1; |
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166 } else { |
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167 x = d->x_pos; |
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168 dir = 1; |
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|
169 } |
27
aa1c47fab3f1
Fix sprite transparency for overlapping sprites
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parents:
26
diff
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|
170 //printf("Draw Slot %d of %d, Rendering sprite cell from %X to x: %d\n", context->cur_slot, context->sprite_draws, d->address, x); |
26
a7c2b92d8056
Fix management of context->sprite_draws so the sprite layer only draws when it should
Mike Pavone <pavone@retrodev.com>
parents:
25
diff
changeset
|
171 context->cur_slot--; |
143
e5487ef04619
Fix infinite loop bug in sprite rendering
Mike Pavone <pavone@retrodev.com>
parents:
142
diff
changeset
|
172 for (uint16_t address = d->address; address != ((d->address+4) & 0xFFFF); address++) { |
27
aa1c47fab3f1
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parents:
26
diff
changeset
|
173 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) { |
494
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
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parents:
481
diff
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|
174 if (context->linebuf[x] && (context->vdpmem[address] >> 4)) { |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
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481
diff
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|
175 context->flags2 |= FLAG2_SPRITE_COLLIDE; |
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481
diff
changeset
|
176 } |
20
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diff
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|
177 context->linebuf[x] = (context->vdpmem[address] >> 4) | d->pal_priority; |
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|
178 } |
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diff
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|
179 x += dir; |
27
aa1c47fab3f1
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parents:
26
diff
changeset
|
180 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) { |
494
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
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parents:
481
diff
changeset
|
181 if (context->linebuf[x] && (context->vdpmem[address] & 0xF)) { |
8ac0eb05642c
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481
diff
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|
182 context->flags2 |= FLAG2_SPRITE_COLLIDE; |
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481
diff
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|
183 } |
20
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diff
changeset
|
184 context->linebuf[x] = (context->vdpmem[address] & 0xF) | d->pal_priority; |
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diff
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|
185 } |
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diff
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|
186 x += dir; |
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diff
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|
187 } |
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changeset
|
188 } |
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diff
changeset
|
189 } |
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diff
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|
190 |
322
8e2fa485c0f2
Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview.
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parents:
318
diff
changeset
|
191 void vdp_print_sprite_table(vdp_context * context) |
8e2fa485c0f2
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318
diff
changeset
|
192 { |
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318
diff
changeset
|
193 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9; |
8e2fa485c0f2
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parents:
318
diff
changeset
|
194 uint16_t current_index = 0; |
8e2fa485c0f2
Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview.
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318
diff
changeset
|
195 uint8_t count = 0; |
8e2fa485c0f2
Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview.
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318
diff
changeset
|
196 do { |
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318
diff
changeset
|
197 uint16_t address = current_index * 8 + sat_address; |
8e2fa485c0f2
Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview.
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318
diff
changeset
|
198 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * 8; |
8e2fa485c0f2
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318
diff
changeset
|
199 uint8_t width = (((context->vdpmem[address+2] >> 2) & 0x3) + 1) * 8; |
8e2fa485c0f2
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318
diff
changeset
|
200 int16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & 0x1FF; |
323
8c01b4154480
Properly mask sprite X and Y coordinates
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parents:
322
diff
changeset
|
201 int16_t x = ((context->vdpmem[address+ 6] & 0x3) << 8 | context->vdpmem[address + 7]) & 0x1FF; |
322
8e2fa485c0f2
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318
diff
changeset
|
202 uint16_t link = context->vdpmem[address+3] & 0x7F; |
323
8c01b4154480
Properly mask sprite X and Y coordinates
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322
diff
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|
203 uint8_t pal = context->vdpmem[address + 4] >> 5 & 0x3; |
8c01b4154480
Properly mask sprite X and Y coordinates
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322
diff
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|
204 uint8_t pri = context->vdpmem[address + 4] >> 7; |
450
3758bcdae5de
Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty
Mike Pavone <pavone@retrodev.com>
parents:
438
diff
changeset
|
205 uint16_t pattern = ((context->vdpmem[address + 4] << 8 | context->vdpmem[address + 5]) & 0x7FF) << 5; |
515
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
206 printf("Sprite %d: X=%d(%d), Y=%d(%d), Width=%u, Height=%u, Link=%u, Pal=%u, Pri=%u, Pat=%X\n", current_index, x, x-128, y, y-128, width, height, link, pal, pri, pattern); |
322
8e2fa485c0f2
Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview.
Mike Pavone <pavone@retrodev.com>
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207 current_index = link; |
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208 count++; |
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209 } while (current_index != 0 && count < 80); |
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210 } |
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211 |
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212 #define VRAM_READ 0 //0000 |
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213 #define VRAM_WRITE 1 //0001 |
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214 //2 would trigger register write 0010 |
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215 #define CRAM_WRITE 3 //0011 |
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216 #define VSRAM_READ 4 //0100 |
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217 #define VSRAM_WRITE 5//0101 |
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218 //6 would trigger regsiter write 0110 |
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219 //7 is a mystery |
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220 #define CRAM_READ 8 //1000 |
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221 //9 is also a mystery //1001 |
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222 //A would trigger register write 1010 |
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223 //B is a mystery 1011 |
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224 #define VRAM_READ8 0xC //1100 |
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225 //D is a mystery 1101 |
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226 //E would trigger register write 1110 |
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227 //F is a mystery 1111 |
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228 #define DMA_START 0x20 |
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229 |
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230 const char * cd_name(uint8_t cd) |
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231 { |
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232 switch (cd & 0xF) |
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233 { |
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234 case VRAM_READ: |
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235 return "VRAM read"; |
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236 case VRAM_WRITE: |
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237 return "VRAM write"; |
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238 case CRAM_WRITE: |
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239 return "CRAM write"; |
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240 case VSRAM_READ: |
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241 return "VSRAM read"; |
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242 case VSRAM_WRITE: |
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243 return "VSRAM write"; |
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244 case VRAM_READ8: |
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245 return "VRAM read (undocumented 8-bit mode)"; |
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246 default: |
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247 return "invalid"; |
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248 } |
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249 } |
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250 |
327
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251 void vdp_print_reg_explain(vdp_context * context) |
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252 { |
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253 char * hscroll[] = {"full", "7-line", "cell", "line"}; |
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254 printf("**Mode Group**\n" |
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255 "00: %.2X | H-ints %s, Pal Select %d, HVC latch %s, Display gen %s\n" |
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256 "01: %.2X | Display %s, V-ints %s, Height: %d, Mode %d\n" |
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257 "0B: %.2X | E-ints %s, V-Scroll: %s, H-Scroll: %s\n" |
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258 "0C: %.2X | Width: %d, Shadow/Highlight: %s\n", |
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259 context->regs[REG_MODE_1], context->regs[REG_MODE_1] & BIT_HINT_EN ? "enabled" : "disabled", context->regs[REG_MODE_1] & BIT_PAL_SEL != 0, |
327
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260 context->regs[REG_MODE_1] & BIT_HVC_LATCH ? "enabled" : "disabled", context->regs[REG_MODE_1] & BIT_DISP_DIS ? "disabled" : "enabled", |
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261 context->regs[REG_MODE_2], context->regs[REG_MODE_2] & BIT_DISP_EN ? "enabled" : "disabled", context->regs[REG_MODE_2] & BIT_VINT_EN ? "enabled" : "disabled", |
327
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262 context->regs[REG_MODE_2] & BIT_PAL ? 30 : 28, context->regs[REG_MODE_2] & BIT_MODE_5 ? 5 : 4, |
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263 context->regs[REG_MODE_3], context->regs[REG_MODE_3] & BIT_EINT_EN ? "enabled" : "disabled", context->regs[REG_MODE_3] & BIT_VSCROLL ? "2 cell" : "full", |
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264 hscroll[context->regs[REG_MODE_3] & 0x3], |
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265 context->regs[REG_MODE_4], context->regs[REG_MODE_4] & BIT_H40 ? 40 : 32, context->regs[REG_MODE_4] & BIT_HILIGHT ? "enabled" : "disabled"); |
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266 printf("\n**Table Group**\n" |
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267 "02: %.2X | Scroll A Name Table: $%.4X\n" |
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268 "03: %.2X | Window Name Table: $%.4X\n" |
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269 "04: %.2X | Scroll B Name Table: $%.4X\n" |
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270 "05: %.2X | Sprite Attribute Table: $%.4X\n" |
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271 "0D: %.2X | HScroll Data Table: $%.4X\n", |
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272 context->regs[REG_SCROLL_A], (context->regs[REG_SCROLL_A] & 0x38) << 10, |
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273 context->regs[REG_WINDOW], (context->regs[REG_WINDOW] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x3C : 0x3E)) << 10, |
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274 context->regs[REG_SCROLL_B], (context->regs[REG_SCROLL_B] & 0x7) << 13, |
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275 context->regs[REG_SAT], (context->regs[REG_SAT] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x7E : 0x7F)) << 9, |
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276 context->regs[REG_HSCROLL], (context->regs[REG_HSCROLL] & 0x3F) << 10); |
327
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277 char * sizes[] = {"32", "64", "invalid", "128"}; |
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278 printf("\n**Misc Group**\n" |
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279 "07: %.2X | Backdrop Color: $%X\n" |
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280 "0A: %.2X | H-Int Counter: %u\n" |
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281 "0F: %.2X | Auto-increment: $%X\n" |
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282 "10: %.2X | Scroll A/B Size: %sx%s\n", |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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283 context->regs[REG_BG_COLOR], context->regs[REG_BG_COLOR], |
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284 context->regs[REG_HINT], context->regs[REG_HINT], |
327
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285 context->regs[REG_AUTOINC], context->regs[REG_AUTOINC], |
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286 context->regs[REG_SCROLL], sizes[context->regs[REG_SCROLL] & 0x3], sizes[context->regs[REG_SCROLL] >> 4 & 0x3]); |
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287 char * src_types[] = {"68K", "68K", "Copy", "Fill"}; |
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288 printf("\n**DMA Group**\n" |
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289 "13: %.2X |\n" |
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290 "14: %.2X | DMA Length: $%.4X words\n" |
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291 "15: %.2X |\n" |
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292 "16: %.2X |\n" |
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293 "17: %.2X | DMA Source Address: $%.6X, Type: %s\n", |
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294 context->regs[REG_DMALEN_L], |
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295 context->regs[REG_DMALEN_H], context->regs[REG_DMALEN_H] << 8 | context->regs[REG_DMALEN_L], |
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296 context->regs[REG_DMASRC_L], |
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297 context->regs[REG_DMASRC_M], |
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298 context->regs[REG_DMASRC_H], |
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299 context->regs[REG_DMASRC_H] << 17 | context->regs[REG_DMASRC_M] << 9 | context->regs[REG_DMASRC_L] << 1, |
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300 src_types[context->regs[REG_DMASRC_H] >> 6 & 3]); |
438
b3cee2fe690b
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301 printf("\n**Internal Group**\n" |
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302 "Address: %X\n" |
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303 "CD: %X - %s\n" |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
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304 "Pending: %s\n" |
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305 "VCounter: %d\n" |
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306 "HCounter: %d\n", |
705
ce4046476abc
Add description of cd register value to vr debugger command
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307 context->address, context->cd, cd_name(context->cd), (context->flags & FLAG_PENDING) ? "true" : "false", |
647
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308 context->vcounter, context->hslot*2); |
450
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309 |
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310 //TODO: Window Group, DMA Group |
327
1b00258b1f29
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311 } |
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312 |
20
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313 void scan_sprite_table(uint32_t line, vdp_context * context) |
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314 { |
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315 if (context->sprite_index && context->slot_counter) { |
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316 line += 1; |
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317 line &= 0xFF; |
413
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318 uint16_t ymask, ymin; |
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319 uint8_t height_mult; |
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320 if (context->double_res) { |
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321 line *= 2; |
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322 if (context->framebuf != context->oddbuf) { |
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323 line++; |
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324 } |
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325 ymask = 0x3FF; |
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326 ymin = 256; |
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327 height_mult = 16; |
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328 } else { |
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329 ymask = 0x1FF; |
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330 ymin = 128; |
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331 height_mult = 8; |
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332 } |
20
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333 context->sprite_index &= 0x7F; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
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334 if (context->regs[REG_MODE_4] & BIT_H40) { |
38
898e3d035f42
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335 if (context->sprite_index >= MAX_SPRITES_FRAME) { |
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336 context->sprite_index = 0; |
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337 return; |
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338 } |
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339 } else if(context->sprite_index >= MAX_SPRITES_FRAME_H32) { |
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340 context->sprite_index = 0; |
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341 return; |
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342 } |
20
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343 //TODO: Read from SAT cache rather than from VRAM |
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344 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9; |
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345 uint16_t address = context->sprite_index * 8 + sat_address; |
413
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346 line += ymin; |
415
8c60c8c09a0f
Fix sprite y mask in interlace mode. Fix framebuffer selection when switching out of interlace mode.
Mike Pavone <pavone@retrodev.com>
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414
diff
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|
347 uint16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & ymask; |
413
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348 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * height_mult; |
21
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349 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height); |
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350 if (y <= line && line < (y + height)) { |
27
aa1c47fab3f1
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|
351 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line); |
20
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352 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2]; |
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353 context->sprite_info_list[context->slot_counter].index = context->sprite_index; |
413
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354 context->sprite_info_list[context->slot_counter].y = y-ymin; |
20
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355 } |
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356 context->sprite_index = context->vdpmem[address+3] & 0x7F; |
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357 if (context->sprite_index && context->slot_counter) |
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358 { |
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359 address = context->sprite_index * 8 + sat_address; |
415
8c60c8c09a0f
Fix sprite y mask in interlace mode. Fix framebuffer selection when switching out of interlace mode.
Mike Pavone <pavone@retrodev.com>
parents:
414
diff
changeset
|
360 y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & ymask; |
413
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|
361 height = ((context->vdpmem[address+2] & 0x3) + 1) * height_mult; |
323
8c01b4154480
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322
diff
changeset
|
362 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height); |
21
72ce60cb1711
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20
diff
changeset
|
363 if (y <= line && line < (y + height)) { |
27
aa1c47fab3f1
Fix sprite transparency for overlapping sprites
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diff
changeset
|
364 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line); |
20
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|
365 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2]; |
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|
366 context->sprite_info_list[context->slot_counter].index = context->sprite_index; |
413
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|
367 context->sprite_info_list[context->slot_counter].y = y-ymin; |
20
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|
368 } |
21
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20
diff
changeset
|
369 context->sprite_index = context->vdpmem[address+3] & 0x7F; |
20
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|
370 } |
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diff
changeset
|
371 } |
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diff
changeset
|
372 } |
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diff
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|
373 |
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diff
changeset
|
374 void read_sprite_x(uint32_t line, vdp_context * context) |
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diff
changeset
|
375 { |
34
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
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32
diff
changeset
|
376 if (context->cur_slot >= context->slot_counter) { |
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Improve sprite masking to almost completely pass Nemesis' sprite masking test
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32
diff
changeset
|
377 if (context->sprite_draws) { |
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Improve sprite masking to almost completely pass Nemesis' sprite masking test
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32
diff
changeset
|
378 line += 1; |
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diff
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|
379 line &= 0xFF; |
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|
380 //in tiles |
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diff
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|
381 uint8_t width = ((context->sprite_info_list[context->cur_slot].size >> 2) & 0x3) + 1; |
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|
382 //in pixels |
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diff
changeset
|
383 uint8_t height = ((context->sprite_info_list[context->cur_slot].size & 0x3) + 1) * 8; |
413
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337
diff
changeset
|
384 if (context->double_res) { |
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changeset
|
385 line *= 2; |
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changeset
|
386 if (context->framebuf != context->oddbuf) { |
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diff
changeset
|
387 line++; |
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|
388 } |
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changeset
|
389 height *= 2; |
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|
390 } |
34
0e7df84158b1
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32
diff
changeset
|
391 uint16_t att_addr = ((context->regs[REG_SAT] & 0x7F) << 9) + context->sprite_info_list[context->cur_slot].index * 8 + 4; |
450
3758bcdae5de
Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty
Mike Pavone <pavone@retrodev.com>
parents:
438
diff
changeset
|
392 uint16_t tileinfo = (context->vdpmem[att_addr] << 8) | context->vdpmem[att_addr+1]; |
34
0e7df84158b1
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32
diff
changeset
|
393 uint8_t pal_priority = (tileinfo >> 9) & 0x70; |
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32
diff
changeset
|
394 uint8_t row; |
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Improve sprite masking to almost completely pass Nemesis' sprite masking test
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32
diff
changeset
|
395 if (tileinfo & MAP_BIT_V_FLIP) { |
0e7df84158b1
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32
diff
changeset
|
396 row = (context->sprite_info_list[context->cur_slot].y + height - 1) - line; |
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32
diff
changeset
|
397 } else { |
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32
diff
changeset
|
398 row = line-context->sprite_info_list[context->cur_slot].y; |
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Improve sprite masking to almost completely pass Nemesis' sprite masking test
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32
diff
changeset
|
399 } |
413
36fbbced25c2
Initial work on interlace
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337
diff
changeset
|
400 uint16_t address; |
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337
diff
changeset
|
401 if (context->double_res) { |
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337
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changeset
|
402 address = ((tileinfo & 0x3FF) << 6) + row * 4; |
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Initial work on interlace
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337
diff
changeset
|
403 } else { |
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diff
changeset
|
404 address = ((tileinfo & 0x7FF) << 5) + row * 4; |
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Initial work on interlace
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337
diff
changeset
|
405 } |
323
8c01b4154480
Properly mask sprite X and Y coordinates
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322
diff
changeset
|
406 int16_t x = ((context->vdpmem[att_addr+ 2] & 0x3) << 8 | context->vdpmem[att_addr + 3]) & 0x1FF; |
36
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Pass all sprite masking tests
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35
diff
changeset
|
407 if (x) { |
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Pass all sprite masking tests
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35
diff
changeset
|
408 context->flags |= FLAG_CAN_MASK; |
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35
diff
changeset
|
409 } else if(context->flags & (FLAG_CAN_MASK | FLAG_DOT_OFLOW)) { |
04672c060062
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35
diff
changeset
|
410 context->flags |= FLAG_MASKED; |
04672c060062
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35
diff
changeset
|
411 } |
450
3758bcdae5de
Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty
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parents:
438
diff
changeset
|
412 |
36
04672c060062
Pass all sprite masking tests
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35
diff
changeset
|
413 context->flags &= ~FLAG_DOT_OFLOW; |
04672c060062
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35
diff
changeset
|
414 int16_t i; |
04672c060062
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35
diff
changeset
|
415 if (context->flags & FLAG_MASKED) { |
04672c060062
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35
diff
changeset
|
416 for (i=0; i < width && context->sprite_draws; i++) { |
04672c060062
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35
diff
changeset
|
417 --context->sprite_draws; |
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35
diff
changeset
|
418 context->sprite_draw_list[context->sprite_draws].x_pos = -128; |
34
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
419 } |
36
04672c060062
Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents:
35
diff
changeset
|
420 } else { |
34
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
421 x -= 128; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
422 int16_t base_x = x; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
423 int16_t dir; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
424 if (tileinfo & MAP_BIT_H_FLIP) { |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
425 x += (width-1) * 8; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
426 dir = -8; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
427 } else { |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
428 dir = 8; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
429 } |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
430 //printf("Sprite %d | x: %d, y: %d, width: %d, height: %d, pal_priority: %X, row: %d, tile addr: %X\n", context->sprite_info_list[context->cur_slot].index, x, context->sprite_info_list[context->cur_slot].y, width, height, pal_priority, row, address); |
35
233c7737c152
Small fix to overflow flag
Mike Pavone <pavone@retrodev.com>
parents:
34
diff
changeset
|
431 for (i=0; i < width && context->sprite_draws; i++, x += dir) { |
34
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
432 --context->sprite_draws; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
433 context->sprite_draw_list[context->sprite_draws].address = address + i * height * 4; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
434 context->sprite_draw_list[context->sprite_draws].x_pos = x; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
435 context->sprite_draw_list[context->sprite_draws].pal_priority = pal_priority; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
436 context->sprite_draw_list[context->sprite_draws].h_flip = (tileinfo & MAP_BIT_H_FLIP) ? 1 : 0; |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
437 } |
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
438 } |
36
04672c060062
Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents:
35
diff
changeset
|
439 if (i < width) { |
04672c060062
Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents:
35
diff
changeset
|
440 context->flags |= FLAG_DOT_OFLOW; |
04672c060062
Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents:
35
diff
changeset
|
441 } |
04672c060062
Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents:
35
diff
changeset
|
442 context->cur_slot--; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
443 } else { |
34
0e7df84158b1
Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents:
32
diff
changeset
|
444 context->flags |= FLAG_DOT_OFLOW; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
445 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
446 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
447 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
448 |
427
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
Mike Pavone <pavone@retrodev.com>
parents:
426
diff
changeset
|
449 void write_cram(vdp_context * context, uint16_t address, uint16_t value) |
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
Mike Pavone <pavone@retrodev.com>
parents:
426
diff
changeset
|
450 { |
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
Mike Pavone <pavone@retrodev.com>
parents:
426
diff
changeset
|
451 uint16_t addr = (address/2) & (CRAM_SIZE-1); |
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
Mike Pavone <pavone@retrodev.com>
parents:
426
diff
changeset
|
452 context->cram[addr] = value; |
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
Mike Pavone <pavone@retrodev.com>
parents:
426
diff
changeset
|
453 context->colors[addr] = color_map[value & 0xEEE]; |
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
Mike Pavone <pavone@retrodev.com>
parents:
426
diff
changeset
|
454 context->colors[addr + CRAM_SIZE] = color_map[(value & 0xEEE) | FBUF_SHADOW]; |
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
Mike Pavone <pavone@retrodev.com>
parents:
426
diff
changeset
|
455 context->colors[addr + CRAM_SIZE*2] = color_map[(value & 0xEEE) | FBUF_HILIGHT]; |
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
Mike Pavone <pavone@retrodev.com>
parents:
426
diff
changeset
|
456 } |
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
Mike Pavone <pavone@retrodev.com>
parents:
426
diff
changeset
|
457 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
458 void external_slot(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
459 { |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
460 fifo_entry * start = context->fifo + context->fifo_read; |
474
e128e55710bd
Remove read pending stuff, that had been added in an attempt to fix CRAM/VSRAM undefined bit results. Set number of bits actually saved in VSRAM to 11
Mike Pavone <pavone@retrodev.com>
parents:
473
diff
changeset
|
461 /*if (context->flags2 & FLAG2_READ_PENDING) { |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
462 context->flags2 &= ~FLAG2_READ_PENDING; |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
463 context->flags |= FLAG_UNUSED_SLOT; |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
464 return; |
474
e128e55710bd
Remove read pending stuff, that had been added in an attempt to fix CRAM/VSRAM undefined bit results. Set number of bits actually saved in VSRAM to 11
Mike Pavone <pavone@retrodev.com>
parents:
473
diff
changeset
|
465 }*/ |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
466 if (context->fifo_read >= 0 && start->cycle <= context->cycles) { |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
467 switch (start->cd & 0xF) |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
468 { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
469 case VRAM_WRITE: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
470 if (start->partial) { |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
471 //printf("VRAM Write: %X to %X at %d (line %d, slot %d)\n", start->value, start->address ^ 1, context->cycles, context->cycles/MCLKS_LINE, (context->cycles%MCLKS_LINE)/16); |
478
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
472 context->vdpmem[start->address ^ 1] = start->partial == 2 ? start->value >> 8 : start->value; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
473 } else { |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
474 //printf("VRAM Write High: %X to %X at %d (line %d, slot %d)\n", start->value >> 8, start->address, context->cycles, context->cycles/MCLKS_LINE, (context->cycles%MCLKS_LINE)/16); |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
475 context->vdpmem[start->address] = start->value >> 8; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
476 start->partial = 1; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
477 //skip auto-increment and removal of entry from fifo |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
478 return; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
479 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
480 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
481 case CRAM_WRITE: { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
482 //printf("CRAM Write | %X to %X\n", start->value, (start->address/2) & (CRAM_SIZE-1)); |
479
863e868752cf
Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40
Mike Pavone <pavone@retrodev.com>
parents:
478
diff
changeset
|
483 write_cram(context, start->address, start->partial == 2 ? context->fifo[context->fifo_write].value : start->value); |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
484 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
485 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
486 case VSRAM_WRITE: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
487 if (((start->address/2) & 63) < VSRAM_SIZE) { |
718
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
parents:
717
diff
changeset
|
488 //printf("VSRAM Write: %X to %X @ vcounter: %d, hslot: %d, cycle: %d\n", start->value, context->address, context->vcounter, context->hslot, context->cycles); |
479
863e868752cf
Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40
Mike Pavone <pavone@retrodev.com>
parents:
478
diff
changeset
|
489 context->vsram[(start->address/2) & 63] = start->partial == 2 ? context->fifo[context->fifo_write].value : start->value; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
490 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
491 |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
492 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
493 } |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
494 context->fifo_read = (context->fifo_read+1) & (FIFO_SIZE-1); |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
495 if (context->fifo_read == context->fifo_write) { |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
496 context->fifo_read = -1; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
497 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
498 } else { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
499 context->flags |= FLAG_UNUSED_SLOT; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
500 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
501 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
502 |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
503 void run_dma_src(vdp_context * context, uint32_t slot) |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
504 { |
75 | 505 //TODO: Figure out what happens if CD bit 4 is not set in DMA copy mode |
506 //TODO: Figure out what happens when CD:0-3 is not set to a write mode in DMA operations | |
507 //TODO: Figure out what happens if DMA gets disabled part way through a DMA fill or DMA copy | |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
508 if (context->fifo_write == context->fifo_read) { |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
509 return; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
510 } |
478
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
511 fifo_entry * cur = NULL; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
512 switch(context->regs[REG_DMASRC_H] & 0xC0) |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
513 { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
514 //68K -> VDP |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
515 case 0: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
516 case 0x40: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
517 if (!slot || !is_refresh(context, slot-1)) { |
478
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
518 cur = context->fifo + context->fifo_write; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
519 cur->cycle = context->cycles + ((context->regs[REG_MODE_4] & BIT_H40) ? 16 : 20)*FIFO_LATENCY; |
478
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
520 cur->address = context->address; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
521 cur->value = read_dma_value((context->regs[REG_DMASRC_H] << 16) | (context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L]); |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
522 cur->cd = context->cd; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
523 cur->partial = 0; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
524 if (context->fifo_read < 0) { |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
525 context->fifo_read = context->fifo_write; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
526 } |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
527 context->fifo_write = (context->fifo_write + 1) & (FIFO_SIZE-1); |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
528 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
529 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
530 //Copy |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
531 case 0xC0: |
478
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
532 if (context->flags & FLAG_UNUSED_SLOT && context->fifo_read < 0) { |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
533 //TODO: Fix this to not use the FIFO at all once read-caching is properly implemented |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
534 context->fifo_read = (context->fifo_write-1) & (FIFO_SIZE-1); |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
535 cur = context->fifo + context->fifo_read; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
536 cur->cycle = context->cycles; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
537 cur->address = context->address; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
538 cur->partial = 1; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
539 cur->value = context->vdpmem[(context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L] ^ 1] | (cur->value & 0xFF00); |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
540 cur->cd = VRAM_WRITE; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
541 context->flags &= ~FLAG_UNUSED_SLOT; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
542 } |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
543 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
544 case 0x80: |
478
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
545 if (context->fifo_read < 0) { |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
546 context->fifo_read = (context->fifo_write-1) & (FIFO_SIZE-1); |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
547 cur = context->fifo + context->fifo_read; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
548 cur->cycle = context->cycles; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
549 cur->address = context->address; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
550 cur->partial = 2; |
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
551 } |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
552 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
553 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
554 |
478
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
555 if (cur) { |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
556 context->regs[REG_DMASRC_L] += 1; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
557 if (!context->regs[REG_DMASRC_L]) { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
558 context->regs[REG_DMASRC_M] += 1; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
559 } |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
560 context->address += context->regs[REG_AUTOINC]; |
478
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
561 uint16_t dma_len = ((context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L]) - 1; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
562 context->regs[REG_DMALEN_H] = dma_len >> 8; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
563 context->regs[REG_DMALEN_L] = dma_len; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
564 if (!dma_len) { |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
565 //printf("DMA end at cycle %d, frame: %d, vcounter: %d, hslot: %d\n", context->cycles, context->frame, context->vcounter, context->hslot); |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
566 context->flags &= ~FLAG_DMA_RUN; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
567 context->cd &= 0xF; |
75 | 568 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
569 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
570 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
571 |
40 | 572 #define WINDOW_RIGHT 0x80 |
573 #define WINDOW_DOWN 0x80 | |
574 | |
25
4d0c20ad815a
Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents:
24
diff
changeset
|
575 void read_map_scroll(uint16_t column, uint16_t vsram_off, uint32_t line, uint16_t address, uint16_t hscroll_val, vdp_context * context) |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
576 { |
417
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
577 uint16_t window_line_shift, v_offset_mask, vscroll_shift; |
414
51ee0f117365
Fix vscroll calculation in double resultion interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
413
diff
changeset
|
578 if (context->double_res) { |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
579 line *= 2; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
580 if (context->framebuf != context->oddbuf) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
581 line++; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
582 } |
417
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
583 window_line_shift = 4; |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
584 v_offset_mask = 0xF; |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
585 vscroll_shift = 4; |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
586 } else { |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
587 window_line_shift = 3; |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
588 v_offset_mask = 0x7; |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
589 vscroll_shift = 3; |
414
51ee0f117365
Fix vscroll calculation in double resultion interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
413
diff
changeset
|
590 } |
40 | 591 if (!vsram_off) { |
592 uint16_t left_col, right_col; | |
593 if (context->regs[REG_WINDOW_H] & WINDOW_RIGHT) { | |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
594 left_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2; |
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
595 right_col = 42; |
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
596 } else { |
40 | 597 left_col = 0; |
598 right_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2; | |
599 if (right_col) { | |
600 right_col += 2; | |
601 } | |
602 } | |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
603 uint16_t top_line, bottom_line; |
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
604 if (context->regs[REG_WINDOW_V] & WINDOW_DOWN) { |
417
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
605 top_line = (context->regs[REG_WINDOW_V] & 0x1F) << window_line_shift; |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
606 bottom_line = context->double_res ? 481 : 241; |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
607 } else { |
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
608 top_line = 0; |
417
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
609 bottom_line = (context->regs[REG_WINDOW_V] & 0x1F) << window_line_shift; |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
610 } |
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
611 if ((column >= left_col && column < right_col) || (line >= top_line && line < bottom_line)) { |
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
612 uint16_t address = context->regs[REG_WINDOW] << 10; |
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
613 uint16_t line_offset, offset, mask; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
614 if (context->regs[REG_MODE_4] & BIT_H40) { |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
615 address &= 0xF000; |
417
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
616 line_offset = (((line) >> vscroll_shift) * 64 * 2) & 0xFFF; |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
617 mask = 0x7F; |
450
3758bcdae5de
Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty
Mike Pavone <pavone@retrodev.com>
parents:
438
diff
changeset
|
618 |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
619 } else { |
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
620 address &= 0xF800; |
417
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
621 line_offset = (((line) >> vscroll_shift) * 32 * 2) & 0xFFF; |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
622 mask = 0x3F; |
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
623 } |
417
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
624 if (context->double_res) { |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
625 mask <<= 1; |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
626 mask |= 1; |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
627 } |
42
6653e67a6811
Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents:
41
diff
changeset
|
628 offset = address + line_offset + (((column - 2) * 2) & mask); |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
629 context->col_1 = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
630 //printf("Window | top: %d, bot: %d, left: %d, right: %d, base: %X, line: %X offset: %X, tile: %X, reg: %X\n", top_line, bottom_line, left_col, right_col, address, line_offset, offset, ((context->col_1 & 0x3FF) << 5), context->regs[REG_WINDOW]); |
42
6653e67a6811
Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents:
41
diff
changeset
|
631 offset = address + line_offset + (((column - 1) * 2) & mask); |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
632 context->col_2 = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
417
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
633 context->v_offset = (line) & v_offset_mask; |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
634 context->flags |= FLAG_WINDOW; |
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
635 return; |
40 | 636 } |
637 context->flags &= ~FLAG_WINDOW; | |
638 } | |
20
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639 uint16_t vscroll; |
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640 switch(context->regs[REG_SCROLL] & 0x30) |
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641 { |
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642 case 0: |
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643 vscroll = 0xFF; |
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644 break; |
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645 case 0x10: |
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646 vscroll = 0x1FF; |
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647 break; |
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648 case 0x20: |
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649 //TODO: Verify this behavior |
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650 vscroll = 0; |
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651 break; |
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652 case 0x30: |
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653 vscroll = 0x3FF; |
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654 break; |
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655 } |
414
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Fix vscroll calculation in double resultion interlace mode
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656 if (context->double_res) { |
413
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657 vscroll <<= 1; |
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658 vscroll |= 1; |
414
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659 } |
718
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
parents:
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660 //TODO: Further research on vscroll latch behavior and the "first column bug" |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
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661 if (!column) { |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
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662 if (context->regs[REG_MODE_3] & BIT_VSCROLL) { |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
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663 if (context->regs[REG_MODE_4] & BIT_H40) { |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
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664 //Based on observed behavior documented by Eke-Eke, I'm guessing the VDP |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
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665 //ends up fetching the last value on the VSRAM bus in the H40 case |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
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666 //getting the last latched value should be close enough for now |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
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667 if (!vsram_off) { |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
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668 context->vscroll_latch[0] = context->vscroll_latch[1]; |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
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669 } |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
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670 } else { |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
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671 //supposedly it's always forced to 0 in the H32 case |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
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672 context->vscroll_latch[0] = context->vscroll_latch[1] = 0; |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
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673 } |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
parents:
717
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674 } else { |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
parents:
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675 context->vscroll_latch[vsram_off] = context->vsram[vsram_off]; |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
parents:
717
diff
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|
676 } |
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
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677 } else if (context->regs[REG_MODE_3] & BIT_VSCROLL) { |
710
4cd8823f79e3
First pass at emulating a vscroll latch. Titan's Overdrive demo seems to depend on the scroll value being latched early in the line before the HINT gets a chance to change it
Michael Pavone <pavone@retrodev.com>
parents:
708
diff
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678 context->vscroll_latch[vsram_off] = context->vsram[column - 2 + vsram_off]; |
4cd8823f79e3
First pass at emulating a vscroll latch. Titan's Overdrive demo seems to depend on the scroll value being latched early in the line before the HINT gets a chance to change it
Michael Pavone <pavone@retrodev.com>
parents:
708
diff
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|
679 } |
4cd8823f79e3
First pass at emulating a vscroll latch. Titan's Overdrive demo seems to depend on the scroll value being latched early in the line before the HINT gets a chance to change it
Michael Pavone <pavone@retrodev.com>
parents:
708
diff
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680 vscroll &= context->vscroll_latch[vsram_off] + line; |
414
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Fix vscroll calculation in double resultion interlace mode
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681 context->v_offset = vscroll & v_offset_mask; |
26
a7c2b92d8056
Fix management of context->sprite_draws so the sprite layer only draws when it should
Mike Pavone <pavone@retrodev.com>
parents:
25
diff
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|
682 //printf("%s | line %d, vsram: %d, vscroll: %d, v_offset: %d\n",(vsram_off ? "B" : "A"), line, context->vsram[context->regs[REG_MODE_3] & 0x4 ? column : 0], vscroll, context->v_offset); |
414
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683 vscroll >>= vscroll_shift; |
20
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684 uint16_t hscroll_mask; |
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685 uint16_t v_mul; |
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686 switch(context->regs[REG_SCROLL] & 0x3) |
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diff
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|
687 { |
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diff
changeset
|
688 case 0: |
108
1a551a85cb06
Fix horizontal mask values for scroll plane map address calculation
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87
diff
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|
689 hscroll_mask = 0x1F; |
20
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690 v_mul = 64; |
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|
691 break; |
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diff
changeset
|
692 case 0x1: |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
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|
693 hscroll_mask = 0x3F; |
20
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diff
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|
694 v_mul = 128; |
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diff
changeset
|
695 break; |
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parents:
diff
changeset
|
696 case 0x2: |
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parents:
diff
changeset
|
697 //TODO: Verify this behavior |
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parents:
diff
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|
698 hscroll_mask = 0; |
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diff
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|
699 v_mul = 0; |
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parents:
diff
changeset
|
700 break; |
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parents:
diff
changeset
|
701 case 0x3: |
108
1a551a85cb06
Fix horizontal mask values for scroll plane map address calculation
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parents:
87
diff
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|
702 hscroll_mask = 0x7F; |
20
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|
703 v_mul = 256; |
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parents:
diff
changeset
|
704 break; |
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diff
changeset
|
705 } |
28 | 706 uint16_t hscroll, offset; |
707 for (int i = 0; i < 2; i++) { | |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
708 hscroll = (column - 2 + i - ((hscroll_val/8) & 0xFFFE)) & hscroll_mask; |
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
709 offset = address + ((vscroll * v_mul + hscroll*2) & 0x1FFF); |
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
710 //printf("%s | line: %d, col: %d, x: %d, hs_mask %X, scr reg: %X, tbl addr: %X\n", (vsram_off ? "B" : "A"), line, (column-2+i), hscroll, hscroll_mask, context->regs[REG_SCROLL], offset); |
28 | 711 uint16_t col_val = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
712 if (i) { | |
713 context->col_2 = col_val; | |
714 } else { | |
715 context->col_1 = col_val; | |
716 } | |
717 } | |
20
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diff
changeset
|
718 } |
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parents:
diff
changeset
|
719 |
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parents:
diff
changeset
|
720 void read_map_scroll_a(uint16_t column, uint32_t line, vdp_context * context) |
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parents:
diff
changeset
|
721 { |
25
4d0c20ad815a
Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents:
24
diff
changeset
|
722 read_map_scroll(column, 0, line, (context->regs[REG_SCROLL_A] & 0x38) << 10, context->hscroll_a, context); |
20
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parents:
diff
changeset
|
723 } |
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parents:
diff
changeset
|
724 |
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parents:
diff
changeset
|
725 void read_map_scroll_b(uint16_t column, uint32_t line, vdp_context * context) |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
726 { |
25
4d0c20ad815a
Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents:
24
diff
changeset
|
727 read_map_scroll(column, 1, line, (context->regs[REG_SCROLL_B] & 0x7) << 13, context->hscroll_b, context); |
20
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parents:
diff
changeset
|
728 } |
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parents:
diff
changeset
|
729 |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
730 void render_map(uint16_t col, uint8_t * tmp_buf, uint8_t offset, vdp_context * context) |
20
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diff
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|
731 { |
413
36fbbced25c2
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|
732 uint16_t address; |
36fbbced25c2
Initial work on interlace
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337
diff
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|
733 uint8_t shift, add; |
36fbbced25c2
Initial work on interlace
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337
diff
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|
734 if (context->double_res) { |
36fbbced25c2
Initial work on interlace
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337
diff
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|
735 address = ((col & 0x3FF) << 6); |
36fbbced25c2
Initial work on interlace
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diff
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|
736 shift = 1; |
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diff
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|
737 add = context->framebuf != context->oddbuf ? 1 : 0; |
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Initial work on interlace
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diff
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|
738 } else { |
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Initial work on interlace
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diff
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|
739 address = ((col & 0x7FF) << 5); |
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Initial work on interlace
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diff
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|
740 shift = 0; |
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Initial work on interlace
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parents:
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diff
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|
741 add = 0; |
36fbbced25c2
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parents:
337
diff
changeset
|
742 } |
20
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parents:
diff
changeset
|
743 if (col & MAP_BIT_V_FLIP) { |
414
51ee0f117365
Fix vscroll calculation in double resultion interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
413
diff
changeset
|
744 address += 28 - 4 * context->v_offset/*((context->v_offset << shift) + add)*/; |
20
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parents:
diff
changeset
|
745 } else { |
414
51ee0f117365
Fix vscroll calculation in double resultion interlace mode
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parents:
413
diff
changeset
|
746 address += 4 * context->v_offset/*((context->v_offset << shift) + add)*/; |
20
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parents:
diff
changeset
|
747 } |
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parents:
diff
changeset
|
748 uint16_t pal_priority = (col >> 9) & 0x70; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
749 int32_t dir; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
750 if (col & MAP_BIT_H_FLIP) { |
436
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Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
751 offset += 7; |
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
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|
752 offset &= SCROLL_BUFFER_MASK; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
753 dir = -1; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
754 } else { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
755 dir = 1; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
756 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
757 for (uint32_t i=0; i < 4; i++, address++) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
758 { |
436
e341fd5aa996
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Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
759 tmp_buf[offset] = pal_priority | (context->vdpmem[address] >> 4); |
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Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
760 offset += dir; |
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Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
761 offset &= SCROLL_BUFFER_MASK; |
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
762 tmp_buf[offset] = pal_priority | (context->vdpmem[address] & 0xF); |
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
763 offset += dir; |
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
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parents:
427
diff
changeset
|
764 offset &= SCROLL_BUFFER_MASK; |
20
f664eeb55cb4
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parents:
diff
changeset
|
765 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
766 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
767 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
768 void render_map_1(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
769 { |
436
e341fd5aa996
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Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
770 render_map(context->col_1, context->tmp_buf_a, context->buf_a_off, context); |
20
f664eeb55cb4
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
771 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
772 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
773 void render_map_2(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
774 { |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
775 render_map(context->col_2, context->tmp_buf_a, context->buf_a_off+8, context); |
20
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
776 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
777 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
778 void render_map_3(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
779 { |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
780 render_map(context->col_1, context->tmp_buf_b, context->buf_b_off, context); |
20
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parents:
diff
changeset
|
781 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
782 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
783 void render_map_output(uint32_t line, int32_t col, vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
784 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
785 if (line >= 240) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
786 return; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
787 } |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
788 render_map(context->col_2, context->tmp_buf_b, context->buf_b_off+8, context); |
719
019d27995e32
Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents:
718
diff
changeset
|
789 uint32_t *dst; |
436
e341fd5aa996
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Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
790 uint8_t *sprite_buf, *plane_a, *plane_b; |
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
791 int plane_a_off, plane_b_off; |
20
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parents:
diff
changeset
|
792 if (col) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
793 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
794 col-=2; |
719
019d27995e32
Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents:
718
diff
changeset
|
795 dst = context->framebuf; |
019d27995e32
Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents:
718
diff
changeset
|
796 dst += line * 320 + col * 8; |
20
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parents:
diff
changeset
|
797 sprite_buf = context->linebuf + col * 8; |
437
afbea09d7fb4
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Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
798 uint8_t a_src, src; |
40 | 799 if (context->flags & FLAG_WINDOW) { |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
800 plane_a_off = context->buf_a_off; |
437
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parents:
436
diff
changeset
|
801 a_src = DBG_SRC_W; |
40 | 802 } else { |
436
e341fd5aa996
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Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
803 plane_a_off = context->buf_a_off - (context->hscroll_a & 0xF); |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
804 a_src = DBG_SRC_A; |
40 | 805 } |
436
e341fd5aa996
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Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
806 plane_b_off = context->buf_b_off - (context->hscroll_b & 0xF); |
30 | 807 //printf("A | tmp_buf offset: %d\n", 8 - (context->hscroll_a & 0x7)); |
450
3758bcdae5de
Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty
Mike Pavone <pavone@retrodev.com>
parents:
438
diff
changeset
|
808 |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
809 if (context->regs[REG_MODE_4] & BIT_HILIGHT) { |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
810 for (int i = 0; i < 16; ++plane_a_off, ++plane_b_off, ++sprite_buf, ++i) { |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
811 uint8_t pixel; |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
812 plane_a = context->tmp_buf_a + (plane_a_off & SCROLL_BUFFER_MASK); |
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
813 plane_b = context->tmp_buf_b + (plane_b_off & SCROLL_BUFFER_MASK); |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
814 uint32_t * colors = context->colors; |
230
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
815 src = 0; |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
816 pixel = context->regs[REG_BG_COLOR]; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
817 src = DBG_SRC_BG; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
818 if (*plane_b & 0xF) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
819 pixel = *plane_b; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
820 src = DBG_SRC_B; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
821 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
822 if (*plane_a & 0xF && (*plane_a & BUF_BIT_PRIORITY) >= (pixel & BUF_BIT_PRIORITY)) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
823 pixel = *plane_a; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
824 src = DBG_SRC_A; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
825 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
826 if (*sprite_buf & 0xF) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
827 uint8_t sprite_color = *sprite_buf & 0x3F; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
828 if (sprite_color == 0x3E) { |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
829 colors += CRAM_SIZE*2; |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
830 src |= DBG_HILIGHT; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
831 } else if (sprite_color == 0x3F) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
832 colors += CRAM_SIZE; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
833 src |= DBG_SHADOW; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
834 } else if ((*sprite_buf & BUF_BIT_PRIORITY) >= (pixel & BUF_BIT_PRIORITY)) { |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
835 pixel = *sprite_buf; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
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parents:
436
diff
changeset
|
836 src = DBG_SRC_S; |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
837 if ((pixel & 0xF) == 0xE) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
838 src |= DBG_SHADOW; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
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parents:
436
diff
changeset
|
839 colors += CRAM_SIZE; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
840 } |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
841 |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
842 } |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
843 } else if (!((*plane_a | *plane_b) & BUF_BIT_PRIORITY)) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
844 colors += CRAM_SIZE; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
845 src |= DBG_SHADOW; |
230
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
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846 } |
426
add9e2f5c0e3
Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
847 pixel &= 0x3F; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
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parents:
436
diff
changeset
|
848 uint32_t outpixel; |
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parents:
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diff
changeset
|
849 if (context->debug) { |
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parents:
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diff
changeset
|
850 outpixel = context->debugcolors[src]; |
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parents:
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diff
changeset
|
851 } else { |
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parents:
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diff
changeset
|
852 outpixel = colors[pixel]; |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
853 } |
719
019d27995e32
Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents:
718
diff
changeset
|
854 *(dst++) = outpixel; |
426
add9e2f5c0e3
Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
855 //*dst = (context->cram[pixel & 0x3F] & 0xEEE) | ((pixel & BUF_BIT_PRIORITY) ? FBUF_BIT_PRIORITY : 0) | src; |
20
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
856 } |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
857 } else { |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
858 for (int i = 0; i < 16; ++plane_a_off, ++plane_b_off, ++sprite_buf, ++i) { |
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
859 plane_a = context->tmp_buf_a + (plane_a_off & SCROLL_BUFFER_MASK); |
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
860 plane_b = context->tmp_buf_b + (plane_b_off & SCROLL_BUFFER_MASK); |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
861 uint8_t pixel = context->regs[REG_BG_COLOR]; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
862 src = DBG_SRC_BG; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
863 if (*plane_b & 0xF) { |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
864 pixel = *plane_b; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
865 src = DBG_SRC_B; |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
866 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
867 if (*plane_a & 0xF && (*plane_a & BUF_BIT_PRIORITY) >= (pixel & BUF_BIT_PRIORITY)) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
868 pixel = *plane_a; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
869 src = DBG_SRC_A; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
870 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
871 if (*sprite_buf & 0xF && (*sprite_buf & BUF_BIT_PRIORITY) >= (pixel & BUF_BIT_PRIORITY)) { |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
872 pixel = *sprite_buf; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
873 src = DBG_SRC_S; |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
874 } |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
875 uint32_t outpixel; |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
876 if (context->debug) { |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
877 outpixel = context->debugcolors[src]; |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
878 } else { |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
879 outpixel = context->colors[pixel & 0x3F]; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
880 } |
719
019d27995e32
Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents:
718
diff
changeset
|
881 *(dst++) = outpixel; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
882 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
883 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
884 } |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
885 context->buf_a_off = (context->buf_a_off + SCROLL_BUFFER_DRAW) & SCROLL_BUFFER_MASK; |
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
886 context->buf_b_off = (context->buf_b_off + SCROLL_BUFFER_DRAW) & SCROLL_BUFFER_MASK; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
887 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
888 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
889 #define COLUMN_RENDER_BLOCK(column, startcyc) \ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
890 case startcyc:\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
891 read_map_scroll_a(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
892 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
893 case (startcyc+1):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
894 external_slot(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
895 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
896 case (startcyc+2):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
897 render_map_1(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
898 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
899 case (startcyc+3):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
900 render_map_2(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
901 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
902 case (startcyc+4):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
903 read_map_scroll_b(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
904 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
905 case (startcyc+5):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
906 read_sprite_x(line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
907 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
908 case (startcyc+6):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
909 render_map_3(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
910 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
911 case (startcyc+7):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
912 render_map_output(line, column, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
913 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
914 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
915 #define COLUMN_RENDER_BLOCK_REFRESH(column, startcyc) \ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
916 case startcyc:\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
917 read_map_scroll_a(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
918 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
919 case (startcyc+1):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
920 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
921 case (startcyc+2):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
922 render_map_1(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
923 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
924 case (startcyc+3):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
925 render_map_2(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
926 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
927 case (startcyc+4):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
928 read_map_scroll_b(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
929 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
930 case (startcyc+5):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
931 read_sprite_x(line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
932 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
933 case (startcyc+6):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
934 render_map_3(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
935 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
936 case (startcyc+7):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
937 render_map_output(line, column, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
938 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
939 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
940 void vdp_h40(uint32_t line, uint32_t linecyc, vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
941 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
942 uint16_t address; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
943 uint32_t mask; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
944 switch(linecyc) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
945 { |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
946 case 165: |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
947 case 166: |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
948 external_slot(context); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
949 break; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
950 //sprite render to line buffer starts |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
951 case 167: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
952 case 168: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
953 case 169: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
954 case 170: |
329
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
955 if (line == 0xFF) { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
956 external_slot(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
957 } else { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
958 render_sprite_cells(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
959 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
960 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
961 //sprite attribute table scan starts |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
962 case 171: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
963 render_sprite_cells( context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
964 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
965 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
966 case 172: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
967 case 173: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
968 case 174: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
969 case 175: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
970 case 176: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
971 case 177: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
972 case 178: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
973 case 179: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
974 case 180: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
975 case 181: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
976 case 182: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
977 case 229: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
978 case 230: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
979 case 231: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
980 case 232: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
981 case 233: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
982 //!HSYNC asserted |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
983 case 234: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
984 case 235: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
985 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
986 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
987 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
988 case 236: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
989 external_slot(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
990 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
991 case 237: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
992 case 238: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
993 case 239: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
994 case 240: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
995 case 241: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
996 case 242: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
997 case 243: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
998 case 244: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
999 case 245: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1000 case 246: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1001 case 247: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1002 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1003 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1004 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1005 case 248: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1006 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1007 mask = 0; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1008 if (context->regs[REG_MODE_3] & 0x2) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1009 mask |= 0xF8; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1010 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1011 if (context->regs[REG_MODE_3] & 0x1) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1012 mask |= 0x7; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1013 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1014 line &= mask; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1015 address += line * 4; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1016 context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1]; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1017 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3]; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1018 //printf("%d: HScroll A: %d, HScroll B: %d\n", line, context->hscroll_a, context->hscroll_b); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1019 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1020 case 249: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1021 //!HSYNC high |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1022 case 250: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1023 case 251: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1024 case 252: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1025 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1026 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1027 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1028 case 253: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1029 read_map_scroll_a(0, line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1030 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1031 case 254: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1032 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1033 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1034 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1035 case 255: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1036 render_map_1(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1037 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1038 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1039 case 0: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1040 render_map_2(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1041 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1042 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1043 case 1: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1044 read_map_scroll_b(0, line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1045 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1046 case 2: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1047 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1048 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1049 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1050 case 3: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1051 render_map_3(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1052 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1053 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1054 case 4: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1055 render_map_output(line, 0, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1056 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1057 //reverse context slot counter so it counts the number of sprite slots |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1058 //filled rather than the number of available slots |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1059 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; |
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1060 context->cur_slot = MAX_SPRITES_LINE-1; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1061 context->sprite_draws = MAX_DRAWS; |
36
04672c060062
Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents:
35
diff
changeset
|
1062 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1063 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1064 COLUMN_RENDER_BLOCK(2, 5) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1065 COLUMN_RENDER_BLOCK(4, 13) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1066 COLUMN_RENDER_BLOCK(6, 21) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1067 COLUMN_RENDER_BLOCK_REFRESH(8, 29) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1068 COLUMN_RENDER_BLOCK(10, 37) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1069 COLUMN_RENDER_BLOCK(12, 45) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1070 COLUMN_RENDER_BLOCK(14, 53) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1071 COLUMN_RENDER_BLOCK_REFRESH(16, 61) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1072 COLUMN_RENDER_BLOCK(18, 69) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1073 COLUMN_RENDER_BLOCK(20, 77) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1074 COLUMN_RENDER_BLOCK(22, 85) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1075 COLUMN_RENDER_BLOCK_REFRESH(24, 93) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1076 COLUMN_RENDER_BLOCK(26, 101) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1077 COLUMN_RENDER_BLOCK(28, 109) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1078 COLUMN_RENDER_BLOCK(30, 117) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1079 COLUMN_RENDER_BLOCK_REFRESH(32, 125) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1080 COLUMN_RENDER_BLOCK(34, 133) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1081 COLUMN_RENDER_BLOCK(36, 141) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1082 COLUMN_RENDER_BLOCK(38, 149) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1083 COLUMN_RENDER_BLOCK_REFRESH(40, 157) |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1084 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1085 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1086 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1087 void vdp_h32(uint32_t line, uint32_t linecyc, vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1088 { |
37 | 1089 uint16_t address; |
1090 uint32_t mask; | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1091 switch(linecyc) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1092 { |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1093 case 132: |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1094 case 133: |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1095 external_slot(context); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1096 break; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1097 //sprite render to line buffer starts |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1098 case 134: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1099 case 135: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1100 case 136: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1101 case 137: |
329
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1102 if (line == 0xFF) { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1103 external_slot(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1104 } else { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1105 render_sprite_cells(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1106 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1107 break; |
37 | 1108 //sprite attribute table scan starts |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1109 case 138: |
37 | 1110 render_sprite_cells( context); |
1111 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1112 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1113 case 139: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1114 case 140: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1115 case 141: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1116 case 142: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1117 case 143: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1118 case 144: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1119 case 145: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1120 case 146: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1121 case 147: |
37 | 1122 render_sprite_cells(context); |
1123 scan_sprite_table(line, context); | |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1124 case 233: |
37 | 1125 external_slot(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1126 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1127 case 234: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1128 case 235: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1129 case 236: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1130 case 237: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1131 case 238: |
37 | 1132 //HSYNC start |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1133 case 239: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1134 case 240: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1135 case 241: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1136 case 242: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1137 case 243: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1138 case 244: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1139 case 245: |
37 | 1140 render_sprite_cells(context); |
1141 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1142 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1143 case 246: |
37 | 1144 external_slot(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1145 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1146 case 247: |
37 | 1147 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
1148 mask = 0; | |
1149 if (context->regs[REG_MODE_3] & 0x2) { | |
1150 mask |= 0xF8; | |
1151 } | |
1152 if (context->regs[REG_MODE_3] & 0x1) { | |
1153 mask |= 0x7; | |
1154 } | |
1155 line &= mask; | |
1156 address += line * 4; | |
1157 context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1]; | |
1158 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3]; | |
1159 //printf("%d: HScroll A: %d, HScroll B: %d\n", line, context->hscroll_a, context->hscroll_b); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1160 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1161 case 248: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1162 case 249: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1163 case 250: |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1164 case 251: |
37 | 1165 render_sprite_cells(context); |
1166 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1167 break; |
37 | 1168 //!HSYNC high |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1169 case 252: |
37 | 1170 read_map_scroll_a(0, line, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1171 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1172 case 253: |
37 | 1173 render_sprite_cells(context); |
1174 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1175 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1176 case 254: |
37 | 1177 render_map_1(context); |
1178 scan_sprite_table(line, context);//Just a guess | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1179 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1180 case 255: |
37 | 1181 render_map_2(context); |
1182 scan_sprite_table(line, context);//Just a guess | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1183 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1184 case 0: |
37 | 1185 read_map_scroll_b(0, line, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1186 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1187 case 1: |
37 | 1188 render_sprite_cells(context); |
1189 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1190 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1191 case 2: |
37 | 1192 render_map_3(context); |
1193 scan_sprite_table(line, context);//Just a guess | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1194 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1195 case 3: |
37 | 1196 render_map_output(line, 0, context); |
1197 scan_sprite_table(line, context);//Just a guess | |
1198 //reverse context slot counter so it counts the number of sprite slots | |
1199 //filled rather than the number of available slots | |
1200 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; | |
1201 context->cur_slot = MAX_SPRITES_LINE_H32-1; | |
1202 context->sprite_draws = MAX_DRAWS_H32; | |
1203 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1204 break; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1205 COLUMN_RENDER_BLOCK(2, 4) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1206 COLUMN_RENDER_BLOCK(4, 12) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1207 COLUMN_RENDER_BLOCK(6, 20) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1208 COLUMN_RENDER_BLOCK_REFRESH(8, 28) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1209 COLUMN_RENDER_BLOCK(10, 36) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1210 COLUMN_RENDER_BLOCK(12, 44) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1211 COLUMN_RENDER_BLOCK(14, 52) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1212 COLUMN_RENDER_BLOCK_REFRESH(16, 60) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1213 COLUMN_RENDER_BLOCK(18, 68) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1214 COLUMN_RENDER_BLOCK(20, 76) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1215 COLUMN_RENDER_BLOCK(22, 84) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1216 COLUMN_RENDER_BLOCK_REFRESH(24, 92) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1217 COLUMN_RENDER_BLOCK(26, 100) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1218 COLUMN_RENDER_BLOCK(28, 108) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1219 COLUMN_RENDER_BLOCK(30, 116) |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1220 COLUMN_RENDER_BLOCK_REFRESH(32, 124) |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1221 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1222 } |
503
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1223 |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1224 void vdp_h40_line(uint32_t line, vdp_context * context) |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1225 { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1226 context->cur_slot = MAX_DRAWS-1; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1227 memset(context->linebuf, 0, LINEBUF_SIZE); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1228 if (line == 0xFF) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1229 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1230 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1231 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1232 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1233 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1234 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1235 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1236 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1237 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1238 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1239 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1240 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1241 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1242 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1243 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1244 } |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1245 external_slot(context); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1246 if (context->flags & FLAG_DMA_RUN) { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1247 run_dma_src(context, 0); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1248 } |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1249 external_slot(context); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1250 if (context->flags & FLAG_DMA_RUN) { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1251 run_dma_src(context, 0); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1252 } |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1253 for (int i = 0; i < 19; i++) |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1254 { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1255 scan_sprite_table(line, context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1256 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1257 external_slot(context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1258 for (int i = 0; i < 21; i++) |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1259 { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1260 scan_sprite_table(line, context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1261 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1262 //reverse context slot counter so it counts the number of sprite slots |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1263 //filled rather than the number of available slots |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1264 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1265 context->cur_slot = MAX_SPRITES_LINE-1; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1266 context->sprite_draws = MAX_DRAWS; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1267 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1268 for (int column = 2; column < 42; column += 8) |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1269 { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1270 external_slot(context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1271 if (context->flags & FLAG_DMA_RUN) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1272 run_dma_src(context, 0); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1273 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1274 read_sprite_x(line, context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1275 |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1276 external_slot(context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1277 if (context->flags & FLAG_DMA_RUN) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1278 run_dma_src(context, 0); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1279 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1280 read_sprite_x(line, context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1281 |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1282 external_slot(context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1283 if (context->flags & FLAG_DMA_RUN) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1284 run_dma_src(context, 0); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1285 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1286 read_sprite_x(line, context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1287 |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1288 read_sprite_x(line, context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1289 } |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1290 |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1291 return; |
503
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1292 } |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1293 external_slot(context); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1294 if (context->flags & FLAG_DMA_RUN) { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1295 run_dma_src(context, 0); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1296 } |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1297 external_slot(context); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1298 if (context->flags & FLAG_DMA_RUN) { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1299 run_dma_src(context, 0); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1300 } |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1301 |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1302 render_sprite_cells(context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1303 render_sprite_cells(context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1304 render_sprite_cells(context); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1305 render_sprite_cells(context); |
503
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1306 context->sprite_index = 0x80; |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1307 context->slot_counter = MAX_SPRITES_LINE; |
eee6be465c47
Small optimization for H40 mode
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parents:
499
diff
changeset
|
1308 for (int i = 0; i < 19; i++) |
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parents:
499
diff
changeset
|
1309 { |
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parents:
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diff
changeset
|
1310 render_sprite_cells(context); |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1311 scan_sprite_table(line, context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1312 } |
eee6be465c47
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Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1313 external_slot(context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1314 for (int i = 0; i < 11; i++) |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1315 { |
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parents:
499
diff
changeset
|
1316 render_sprite_cells(context); |
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Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1317 scan_sprite_table(line, context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1318 } |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1319 uint16_t address; |
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Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1320 uint32_t mask; |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1321 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
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parents:
499
diff
changeset
|
1322 mask = 0; |
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Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1323 if (context->regs[REG_MODE_3] & 0x2) { |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1324 mask |= 0xF8; |
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Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1325 } |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1326 if (context->regs[REG_MODE_3] & 0x1) { |
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parents:
499
diff
changeset
|
1327 mask |= 0x7; |
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parents:
499
diff
changeset
|
1328 } |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1329 address += (line & mask) * 4; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1330 context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1]; |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1331 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3]; |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1332 render_sprite_cells(context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1333 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1334 render_sprite_cells(context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1335 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1336 render_sprite_cells(context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1337 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1338 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1339 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1340 |
eee6be465c47
Small optimization for H40 mode
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parents:
499
diff
changeset
|
1341 read_map_scroll_a(0, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1342 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1343 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1344 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1345 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1346 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1347 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1348 read_map_scroll_b(0, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1349 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1350 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1351 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1352 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1353 render_map_output(line, 0, context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1354 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1355 //reverse context slot counter so it counts the number of sprite slots |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1356 //filled rather than the number of available slots |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1357 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1358 context->cur_slot = MAX_SPRITES_LINE-1; |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1359 context->sprite_draws = MAX_DRAWS; |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1360 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1361 for (int column = 2; column < 42; column += 2) |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1362 { |
eee6be465c47
Small optimization for H40 mode
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parents:
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diff
changeset
|
1363 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1364 external_slot(context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1365 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1366 run_dma_src(context, 0); |
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Small optimization for H40 mode
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parents:
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diff
changeset
|
1367 } |
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Small optimization for H40 mode
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parents:
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diff
changeset
|
1368 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
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parents:
499
diff
changeset
|
1369 render_map_2(context); |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1370 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
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parents:
499
diff
changeset
|
1371 read_sprite_x(line, context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1372 render_map_3(context); |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1373 render_map_output(line, column, context); |
eee6be465c47
Small optimization for H40 mode
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parents:
499
diff
changeset
|
1374 |
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Small optimization for H40 mode
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parents:
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diff
changeset
|
1375 column += 2; |
eee6be465c47
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parents:
499
diff
changeset
|
1376 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1377 external_slot(context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1378 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1379 run_dma_src(context, 0); |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1380 } |
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Small optimization for H40 mode
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parents:
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diff
changeset
|
1381 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1382 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1383 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1384 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1385 render_map_3(context); |
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Small optimization for H40 mode
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parents:
499
diff
changeset
|
1386 render_map_output(line, column, context); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1387 |
eee6be465c47
Small optimization for H40 mode
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parents:
499
diff
changeset
|
1388 column += 2; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1389 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1390 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1391 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1392 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1393 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1394 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1395 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1396 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1397 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1398 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1399 render_map_output(line, column, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1400 |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1401 column += 2; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1402 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1403 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1404 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1405 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1406 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1407 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1408 render_map_output(line, column, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1409 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1410 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1411 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1412 void latch_mode(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1413 { |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1414 context->latched_mode = context->regs[REG_MODE_2] & BIT_PAL; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1415 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1416 |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1417 void check_render_bg(vdp_context * context, int32_t line, uint32_t slot) |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1418 { |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1419 int starti = -1; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1420 if (context->regs[REG_MODE_4] & BIT_H40) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1421 if (slot >= 12 && slot < 172) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1422 uint32_t x = (slot-12)*2; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1423 starti = line * 320 + x; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1424 } |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1425 } else { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1426 if (slot >= 11 && slot < 139) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1427 uint32_t x = (slot-11)*2; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1428 starti = line * 320 + x; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1429 } |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1430 } |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1431 if (starti >= 0) { |
719
019d27995e32
Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents:
718
diff
changeset
|
1432 uint32_t color = context->colors[context->regs[REG_BG_COLOR]]; |
019d27995e32
Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents:
718
diff
changeset
|
1433 uint32_t * start = context->framebuf; |
019d27995e32
Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents:
718
diff
changeset
|
1434 start += starti; |
019d27995e32
Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents:
718
diff
changeset
|
1435 for (int i = 0; i < 2; i++) { |
019d27995e32
Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents:
718
diff
changeset
|
1436 *(start++) = color; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1437 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1438 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1439 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1440 |
697
7f96bd1cb1be
Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents:
680
diff
changeset
|
1441 uint32_t const h40_hsync_cycles[] = {19, 20, 20, 20, 18, 20, 20, 20, 18, 20, 20, 20, 18, 20, 20, 20, 19}; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1442 |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1443 void vdp_advance_line(vdp_context *context) |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1444 { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1445 context->vcounter++; |
720
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1446 context->vcounter &= 0x1FF; |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1447 if (context->flags2 & FLAG2_REGION_PAL) { |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1448 if (context->latched_mode & BIT_PAL) { |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1449 if (context->vcounter == 0x10B) { |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1450 context->vcounter = 0x1D2; |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1451 } |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1452 } else if (context->vcounter == 0x103){ |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1453 context->vcounter = 0x1CA; |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1454 } |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1455 } else if (!(context->latched_mode & BIT_PAL) && context->vcounter == 0xEB) { |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1456 context->vcounter = 0x1E5; |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1457 } |
15d9359fd771
Add some tests for hint timing and fix it properly this time.
Michael Pavone <pavone@retrodev.com>
parents:
719
diff
changeset
|
1458 |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1459 if (context->vcounter > (context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START)) { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1460 context->hint_counter = context->regs[REG_HINT]; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1461 } else if (context->hint_counter) { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1462 context->hint_counter--; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1463 } else { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1464 context->flags2 |= FLAG2_HINT_PENDING; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1465 context->pending_hint_start = context->cycles; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1466 context->hint_counter = context->regs[REG_HINT]; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1467 } |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1468 } |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1469 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1470 void vdp_run_context(vdp_context * context, uint32_t target_cycles) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1471 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1472 while(context->cycles < target_cycles) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1473 { |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1474 context->flags &= ~FLAG_UNUSED_SLOT; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1475 uint32_t line = context->vcounter; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1476 uint32_t slot = context->hslot; |
697
7f96bd1cb1be
Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents:
680
diff
changeset
|
1477 |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1478 if (!line && !slot) { |
697
7f96bd1cb1be
Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents:
680
diff
changeset
|
1479 //TODO: Figure out when this actually happens |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1480 latch_mode(context); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1481 } |
697
7f96bd1cb1be
Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents:
680
diff
changeset
|
1482 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START; |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1483 |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1484 uint8_t is_h40 = context->regs[REG_MODE_4] & BIT_H40; |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1485 if (is_h40) { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1486 if (slot == 167) { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1487 context->cur_slot = MAX_DRAWS-1; |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1488 memset(context->linebuf, 0, LINEBUF_SIZE); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1489 } else if (slot == 171) { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1490 context->sprite_index = 0x80; |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1491 context->slot_counter = MAX_SPRITES_LINE; |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1492 } |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1493 } else { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1494 if (slot == 134) { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1495 context->cur_slot = MAX_DRAWS_H32-1; |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1496 memset(context->linebuf, 0, LINEBUF_SIZE); |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1497 } else if (slot == 138) { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1498 context->sprite_index = 0x80; |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1499 context->slot_counter = MAX_SPRITES_LINE_H32; |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1500 } |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1501 } |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1502 if(line == inactive_start) { |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1503 uint32_t intslot = context->regs[REG_MODE_4] & BIT_H40 ? VINT_SLOT_H40 : VINT_SLOT_H32; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1504 if (slot == intslot) { |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1505 context->flags2 |= FLAG2_VINT_PENDING; |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1506 context->pending_vint_start = context->cycles; |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1507 } |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1508 } |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1509 uint32_t inccycles; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1510 //line 0x1FF is basically active even though it's not displayed |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1511 uint8_t active_slot = line < inactive_start || line == 0x1FF; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1512 if (is_h40) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1513 if (slot < HSYNC_SLOT_H40 || slot >= HSYNC_END_H40) { |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1514 inccycles = MCLKS_SLOT_H40; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1515 } else { |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1516 inccycles = h40_hsync_cycles[slot-HSYNC_SLOT_H40]; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1517 } |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1518 //the first inactive line behaves as an active one for the first 4 slots |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1519 if (line == inactive_start && slot > 166 && slot < 171) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1520 active_slot = 1; |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1521 } |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1522 } else { |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1523 inccycles = MCLKS_SLOT_H32; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1524 //the first inactive line behaves as an active one for the first 4 slots |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1525 if (line == inactive_start && slot > 166 && slot < 171) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1526 active_slot = 1; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1527 } |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1528 } |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1529 uint8_t inc_slot = 1; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1530 if (context->regs[REG_MODE_2] & DISPLAY_ENABLE && active_slot) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1531 //run VDP rendering for a slot or a line |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1532 if (is_h40) { |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1533 if (slot == LINE_CHANGE_H40 && line < inactive_start && (target_cycles - context->cycles) >= MCLKS_LINE) { |
503
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1534 vdp_h40_line(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1535 inccycles = MCLKS_LINE; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1536 inc_slot = 0; |
503
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1537 } else { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1538 vdp_h40(line, slot, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1539 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1540 } else { |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1541 vdp_h32(line, slot, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1542 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1543 } else { |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1544 if (!is_refresh(context, slot)) { |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1545 external_slot(context); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1546 } |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1547 if (line < inactive_start) { |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1548 check_render_bg(context, line, slot); |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1549 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1550 } |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1551 if (context->flags & FLAG_DMA_RUN && !is_refresh(context, slot)) { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1552 run_dma_src(context, slot); |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1553 } |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1554 context->cycles += inccycles; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1555 if (inc_slot) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1556 context->hslot++; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1557 context->hslot &= 0xFF; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1558 if (is_h40) { |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1559 if (context->hslot == LINE_CHANGE_H40) { |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1560 vdp_advance_line(context); |
699
d8a1fdec68fc
Fix frame counter increment and VINT cycle time calculation
Michael Pavone <pavone@retrodev.com>
parents:
697
diff
changeset
|
1561 if (context->vcounter == (inactive_start + 8)) { |
d8a1fdec68fc
Fix frame counter increment and VINT cycle time calculation
Michael Pavone <pavone@retrodev.com>
parents:
697
diff
changeset
|
1562 context->frame++; |
d8a1fdec68fc
Fix frame counter increment and VINT cycle time calculation
Michael Pavone <pavone@retrodev.com>
parents:
697
diff
changeset
|
1563 } |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1564 } else if (context->hslot == 183) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1565 context->hslot = 229; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1566 } |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1567 } else { |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1568 if (context->hslot == LINE_CHANGE_H32) { |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1569 vdp_advance_line(context); |
699
d8a1fdec68fc
Fix frame counter increment and VINT cycle time calculation
Michael Pavone <pavone@retrodev.com>
parents:
697
diff
changeset
|
1570 if (context->vcounter == (inactive_start + 8)) { |
d8a1fdec68fc
Fix frame counter increment and VINT cycle time calculation
Michael Pavone <pavone@retrodev.com>
parents:
697
diff
changeset
|
1571 context->frame++; |
d8a1fdec68fc
Fix frame counter increment and VINT cycle time calculation
Michael Pavone <pavone@retrodev.com>
parents:
697
diff
changeset
|
1572 } |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1573 } else if (context->hslot == 148) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1574 context->hslot = 233; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1575 } |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1576 } |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1577 |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1578 } else { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1579 vdp_advance_line(context); |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1580 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1581 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1582 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1583 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1584 uint32_t vdp_run_to_vblank(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1585 { |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1586 uint32_t target_cycles = ((context->latched_mode & BIT_PAL) ? PAL_INACTIVE_START : NTSC_INACTIVE_START) * MCLKS_LINE; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1587 vdp_run_context(context, target_cycles); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1588 return context->cycles; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1589 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1590 |
75 | 1591 void vdp_run_dma_done(vdp_context * context, uint32_t target_cycles) |
1592 { | |
1593 for(;;) { | |
1594 uint32_t dmalen = (context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L]; | |
1595 if (!dmalen) { | |
1596 dmalen = 0x10000; | |
1597 } | |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1598 uint32_t min_dma_complete = dmalen * (context->regs[REG_MODE_4] & BIT_H40 ? 16 : 20); |
75 | 1599 if ((context->regs[REG_DMASRC_H] & 0xC0) == 0xC0 || (context->cd & 0xF) == VRAM_WRITE) { |
1600 //DMA copies take twice as long to complete since they require a read and a write | |
1601 //DMA Fills and transfers to VRAM also take twice as long as it requires 2 writes for a single word | |
1602 min_dma_complete *= 2; | |
1603 } | |
1604 min_dma_complete += context->cycles; | |
1605 if (target_cycles < min_dma_complete) { | |
1606 vdp_run_context(context, target_cycles); | |
1607 return; | |
1608 } else { | |
1609 vdp_run_context(context, min_dma_complete); | |
1610 if (!(context->flags & FLAG_DMA_RUN)) { | |
1611 return; | |
1612 } | |
1613 } | |
1614 } | |
1615 } | |
1616 | |
1617 int vdp_control_port_write(vdp_context * context, uint16_t value) | |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1618 { |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1619 //printf("control port write: %X at %d\n", value, context->cycles); |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1620 if (context->flags & FLAG_DMA_RUN) { |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1621 return -1; |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1622 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1623 if (context->flags & FLAG_PENDING) { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1624 context->address = (context->address & 0x3FFF) | (value << 14); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1625 context->cd = (context->cd & 0x3) | ((value >> 2) & 0x3C); |
75 | 1626 context->flags &= ~FLAG_PENDING; |
453
b491df8bdbc0
Adjust VBLANK flag and refresh timing to be in line with logic analyzer and visual observations of direct color DMA demos. Remove debug print statements.
Mike Pavone <pavone@retrodev.com>
parents:
452
diff
changeset
|
1627 //printf("New Address: %X, New CD: %X\n", context->address, context->cd); |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1628 if (context->cd & 0x20 && (context->regs[REG_MODE_2] & BIT_DMA_ENABLE)) { |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1629 // |
75 | 1630 if((context->regs[REG_DMASRC_H] & 0xC0) != 0x80) { |
1631 //DMA copy or 68K -> VDP, transfer starts immediately | |
1632 context->flags |= FLAG_DMA_RUN; | |
131
8fc8e46be691
Fix bug that was causing DMA fills to lock up under certain circumstances
Mike Pavone <pavone@retrodev.com>
parents:
109
diff
changeset
|
1633 context->dma_cd = context->cd; |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1634 //printf("DMA start (length: %X) at cycle %d, frame: %d, vcounter: %d, hslot: %d\n", (context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L], context->cycles, context->frame, context->vcounter, context->hslot); |
75 | 1635 if (!(context->regs[REG_DMASRC_H] & 0x80)) { |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1636 //printf("DMA Address: %X, New CD: %X, Source: %X, Length: %X\n", context->address, context->cd, (context->regs[REG_DMASRC_H] << 17) | (context->regs[REG_DMASRC_M] << 9) | (context->regs[REG_DMASRC_L] << 1), context->regs[REG_DMALEN_H] << 8 | context->regs[REG_DMALEN_L]); |
75 | 1637 return 1; |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1638 } else { |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1639 //printf("DMA Copy Address: %X, New CD: %X, Source: %X\n", context->address, context->cd, (context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L]); |
75 | 1640 } |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1641 } else { |
453
b491df8bdbc0
Adjust VBLANK flag and refresh timing to be in line with logic analyzer and visual observations of direct color DMA demos. Remove debug print statements.
Mike Pavone <pavone@retrodev.com>
parents:
452
diff
changeset
|
1642 //printf("DMA Fill Address: %X, New CD: %X\n", context->address, context->cd); |
75 | 1643 } |
63
a6dd5b7a971b
Add FPS counter to console output
Mike Pavone <pavone@retrodev.com>
parents:
58
diff
changeset
|
1644 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1645 } else { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1646 if ((value & 0xC000) == 0x8000) { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1647 //Register write |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1648 uint8_t reg = (value >> 8) & 0x1F; |
475
50e0cb475294
Don't allow register writes to regs above when in Mode 4
Mike Pavone <pavone@retrodev.com>
parents:
474
diff
changeset
|
1649 if (reg < (context->regs[REG_MODE_2] & BIT_MODE_5 ? VDP_REGS : 0xA)) { |
453
b491df8bdbc0
Adjust VBLANK flag and refresh timing to be in line with logic analyzer and visual observations of direct color DMA demos. Remove debug print statements.
Mike Pavone <pavone@retrodev.com>
parents:
452
diff
changeset
|
1650 //printf("register %d set to %X\n", reg, value & 0xFF); |
480
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1651 if (reg == REG_MODE_1 && (value & BIT_HVC_LATCH) && !(context->regs[reg] & BIT_HVC_LATCH)) { |
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1652 context->hv_latch = vdp_hv_counter_read(context); |
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1653 } |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1654 if (reg == REG_BG_COLOR) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1655 value &= 0x3F; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
1656 } |
718
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
parents:
717
diff
changeset
|
1657 /*if (reg == REG_MODE_4 && ((value ^ context->regs[reg]) & BIT_H40)) { |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1658 printf("Mode changed from H%d to H%d @ %d, frame: %d\n", context->regs[reg] & BIT_H40 ? 40 : 32, value & BIT_H40 ? 40 : 32, context->cycles, context->frame); |
718
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
parents:
717
diff
changeset
|
1659 }*/ |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1660 context->regs[reg] = value; |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1661 if (reg == REG_MODE_4) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1662 context->double_res = (value & (BIT_INTERLACE | BIT_DOUBLE_RES)) == (BIT_INTERLACE | BIT_DOUBLE_RES); |
415
8c60c8c09a0f
Fix sprite y mask in interlace mode. Fix framebuffer selection when switching out of interlace mode.
Mike Pavone <pavone@retrodev.com>
parents:
414
diff
changeset
|
1663 if (!context->double_res) { |
8c60c8c09a0f
Fix sprite y mask in interlace mode. Fix framebuffer selection when switching out of interlace mode.
Mike Pavone <pavone@retrodev.com>
parents:
414
diff
changeset
|
1664 context->framebuf = context->oddbuf; |
8c60c8c09a0f
Fix sprite y mask in interlace mode. Fix framebuffer selection when switching out of interlace mode.
Mike Pavone <pavone@retrodev.com>
parents:
414
diff
changeset
|
1665 } |
680
4996369f1463
Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents:
678
diff
changeset
|
1666 } |
476
5d7bc113653b
Clear the low 2 bits of CD when a register is written to
Mike Pavone <pavone@retrodev.com>
parents:
475
diff
changeset
|
1667 context->cd &= 0x3C; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1668 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1669 } else { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1670 context->flags |= FLAG_PENDING; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1671 context->address = (context->address &0xC000) | (value & 0x3FFF); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1672 context->cd = (context->cd &0x3C) | (value >> 14); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1673 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1674 } |
75 | 1675 return 0; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1676 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1677 |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1678 int vdp_data_port_write(vdp_context * context, uint16_t value) |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1679 { |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1680 //printf("data port write: %X at %d\n", value, context->cycles); |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1681 if (context->flags & FLAG_DMA_RUN && (context->regs[REG_DMASRC_H] & 0xC0) != 0x80) { |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1682 return -1; |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1683 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1684 context->flags &= ~FLAG_PENDING; |
109
004dd46e0a97
COmment out fifo full debug printf
Mike Pavone <pavone@retrodev.com>
parents:
108
diff
changeset
|
1685 /*if (context->fifo_cur == context->fifo_end) { |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1686 printf("FIFO full, waiting for space before next write at cycle %X\n", context->cycles); |
109
004dd46e0a97
COmment out fifo full debug printf
Mike Pavone <pavone@retrodev.com>
parents:
108
diff
changeset
|
1687 }*/ |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1688 if (context->cd & 0x20 && (context->regs[REG_DMASRC_H] & 0xC0) == 0x80) { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1689 context->flags &= ~FLAG_DMA_RUN; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1690 } |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1691 while (context->fifo_write == context->fifo_read) { |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1692 vdp_run_context(context, context->cycles + ((context->regs[REG_MODE_4] & BIT_H40) ? 16 : 20)); |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1693 } |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1694 fifo_entry * cur = context->fifo + context->fifo_write; |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1695 cur->cycle = context->cycles + ((context->regs[REG_MODE_4] & BIT_H40) ? 16 : 20)*FIFO_LATENCY; |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1696 cur->address = context->address; |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1697 cur->value = value; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1698 if (context->cd & 0x20 && (context->regs[REG_DMASRC_H] & 0xC0) == 0x80) { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1699 context->flags |= FLAG_DMA_RUN; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1700 } |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1701 cur->cd = context->cd; |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1702 cur->partial = 0; |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1703 if (context->fifo_read < 0) { |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1704 context->fifo_read = context->fifo_write; |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1705 } |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1706 context->fifo_write = (context->fifo_write + 1) & (FIFO_SIZE-1); |
138 | 1707 context->address += context->regs[REG_AUTOINC]; |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1708 return 0; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1709 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1710 |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1711 void vdp_test_port_write(vdp_context * context, uint16_t value) |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1712 { |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1713 //TODO: implement test register |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1714 } |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1715 |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1716 uint16_t vdp_control_port_read(vdp_context * context) |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1717 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1718 context->flags &= ~FLAG_PENDING; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1719 uint16_t value = 0x3400; |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1720 if (context->fifo_read < 0) { |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1721 value |= 0x200; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1722 } |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1723 if (context->fifo_read == context->fifo_write) { |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1724 value |= 0x100; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1725 } |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1726 if (context->flags2 & FLAG2_VINT_PENDING) { |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1727 value |= 0x80; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1728 } |
494
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1729 if (context->flags & FLAG_DOT_OFLOW) { |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1730 value |= 0x40; |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1731 } |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1732 if (context->flags2 & FLAG2_SPRITE_COLLIDE) { |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1733 value |= 0x20; |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1734 //TODO: Test when this is actually cleared |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1735 context->flags2 &= ~FLAG2_SPRITE_COLLIDE; |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1736 } |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1737 if ((context->regs[REG_MODE_4] & BIT_INTERLACE) && context->framebuf == context->oddbuf) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1738 value |= 0x10; |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1739 } |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1740 uint32_t line= context->vcounter; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1741 uint32_t slot = context->hslot; |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1742 uint32_t inactive_start = (context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START); |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1743 if ( |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1744 ( |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1745 line > inactive_start |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1746 && line < 0x1FF |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1747 ) |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1748 || (line == inactive_start |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1749 && ( |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1750 slot >= (context->regs[REG_MODE_4] & BIT_H40 ? VBLANK_START_H40 : VBLANK_START_H32) |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1751 || slot < (context->regs[REG_MODE_4] & BIT_H40 ? LINE_CHANGE_H40 : LINE_CHANGE_H32) |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1752 ) |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1753 ) |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1754 || (line == 0x1FF |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1755 && slot < (context->regs[REG_MODE_4] & BIT_H40 ? VBLANK_START_H40 : VBLANK_START_H32)) |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1756 && slot >= (context->regs[REG_MODE_4] & BIT_H40 ? LINE_CHANGE_H40 : LINE_CHANGE_H32) |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1757 || !(context->regs[REG_MODE_2] & BIT_DISP_EN) |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1758 ) { |
318
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1759 value |= 0x8; |
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1760 } |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1761 if (context->regs[REG_MODE_4] & BIT_H40) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1762 if (slot < HBLANK_END_H40 || slot > HBLANK_START_H40) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1763 value |= 0x4; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1764 } |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1765 } else { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1766 if (slot < HBLANK_END_H32 || slot > HBLANK_START_H32) { |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1767 value |= 0x4; |
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1768 } |
318
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1769 } |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1770 if (context->flags & FLAG_DMA_RUN) { |
141
576f55711d8d
Fix DMA in progress flag in VDP status register
Mike Pavone <pavone@retrodev.com>
parents:
138
diff
changeset
|
1771 value |= 0x2; |
75 | 1772 } |
714
e29bc2918f69
Fix VDP status register PAL bit based on observations of the Titan Overdrive demo
Michael Pavone <pavone@retrodev.com>
parents:
711
diff
changeset
|
1773 if (context->flags2 & FLAG2_REGION_PAL) { |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1774 value |= 0x1; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1775 } |
459
c49ecf575784
Revert change to VBLANK flag timing based on new direct color DMA test
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1776 //printf("status read at cycle %d returned %X\n", context->cycles, value); |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1777 return value; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1778 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1779 |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1780 #define CRAM_BITS 0xEEE |
474
e128e55710bd
Remove read pending stuff, that had been added in an attempt to fix CRAM/VSRAM undefined bit results. Set number of bits actually saved in VSRAM to 11
Mike Pavone <pavone@retrodev.com>
parents:
473
diff
changeset
|
1781 #define VSRAM_BITS 0x7FF |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1782 #define VSRAM_DIRTY_BITS 0xF800 |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1783 |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1784 uint16_t vdp_data_port_read(vdp_context * context) |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1785 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1786 context->flags &= ~FLAG_PENDING; |
138 | 1787 if (context->cd & 1) { |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1788 return 0; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1789 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1790 //Not sure if the FIFO should be drained before processing a read or not, but it would make sense |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1791 context->flags &= ~FLAG_UNUSED_SLOT; |
474
e128e55710bd
Remove read pending stuff, that had been added in an attempt to fix CRAM/VSRAM undefined bit results. Set number of bits actually saved in VSRAM to 11
Mike Pavone <pavone@retrodev.com>
parents:
473
diff
changeset
|
1792 //context->flags2 |= FLAG2_READ_PENDING; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1793 while (!(context->flags & FLAG_UNUSED_SLOT)) { |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1794 vdp_run_context(context, context->cycles + ((context->regs[REG_MODE_4] & BIT_H40) ? 16 : 20)); |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1795 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1796 uint16_t value = 0; |
138 | 1797 switch (context->cd & 0xF) |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1798 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1799 case VRAM_READ: |
472 | 1800 value = context->vdpmem[context->address & 0xFFFE] << 8; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1801 context->flags &= ~FLAG_UNUSED_SLOT; |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1802 context->flags2 |= FLAG2_READ_PENDING; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1803 while (!(context->flags & FLAG_UNUSED_SLOT)) { |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1804 vdp_run_context(context, context->cycles + ((context->regs[REG_MODE_4] & BIT_H40) ? 16 : 20)); |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1805 } |
472 | 1806 value |= context->vdpmem[context->address | 1]; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1807 break; |
473
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1808 case VRAM_READ8: |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1809 value = context->vdpmem[context->address ^ 1]; |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1810 value |= context->fifo[context->fifo_write].value & 0xFF00; |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1811 break; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1812 case CRAM_READ: |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1813 value = context->cram[(context->address/2) & (CRAM_SIZE-1)] & CRAM_BITS; |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1814 value |= context->fifo[context->fifo_write].value & ~CRAM_BITS; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1815 break; |
479
863e868752cf
Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40
Mike Pavone <pavone@retrodev.com>
parents:
478
diff
changeset
|
1816 case VSRAM_READ: { |
863e868752cf
Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40
Mike Pavone <pavone@retrodev.com>
parents:
478
diff
changeset
|
1817 uint16_t address = (context->address /2) & 63; |
863e868752cf
Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40
Mike Pavone <pavone@retrodev.com>
parents:
478
diff
changeset
|
1818 if (address >= VSRAM_SIZE) { |
863e868752cf
Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40
Mike Pavone <pavone@retrodev.com>
parents:
478
diff
changeset
|
1819 address = 0; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1820 } |
479
863e868752cf
Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40
Mike Pavone <pavone@retrodev.com>
parents:
478
diff
changeset
|
1821 value = context->vsram[address] & VSRAM_BITS; |
863e868752cf
Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40
Mike Pavone <pavone@retrodev.com>
parents:
478
diff
changeset
|
1822 value |= context->fifo[context->fifo_write].value & VSRAM_DIRTY_BITS; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1823 break; |
479
863e868752cf
Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40
Mike Pavone <pavone@retrodev.com>
parents:
478
diff
changeset
|
1824 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1825 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1826 context->address += context->regs[REG_AUTOINC]; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1827 return value; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1828 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1829 |
137 | 1830 uint16_t vdp_hv_counter_read(vdp_context * context) |
1831 { | |
480
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1832 if (context->regs[REG_MODE_1] & BIT_HVC_LATCH) { |
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1833 return context->hv_latch; |
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1834 } |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1835 uint32_t line= context->vcounter & 0xFF; |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1836 uint32_t linecyc = context->hslot; |
137 | 1837 linecyc &= 0xFF; |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1838 if (context->double_res) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1839 line <<= 1; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1840 if (line & 0x100) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1841 line |= 1; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1842 } |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1843 } |
137 | 1844 return (line << 8) | linecyc; |
1845 } | |
1846 | |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1847 uint16_t vdp_test_port_read(vdp_context * context) |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1848 { |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1849 //TODO: Find out what actually gets returned here |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1850 return 0xFFFF; |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1851 } |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1852 |
65
aef6302770c2
Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents:
63
diff
changeset
|
1853 void vdp_adjust_cycles(vdp_context * context, uint32_t deduction) |
aef6302770c2
Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents:
63
diff
changeset
|
1854 { |
aef6302770c2
Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents:
63
diff
changeset
|
1855 context->cycles -= deduction; |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1856 if (context->pending_vint_start >= deduction) { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1857 context->pending_vint_start -= deduction; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1858 } else { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1859 context->pending_vint_start = 0; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1860 } |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1861 if (context->pending_hint_start >= deduction) { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1862 context->pending_hint_start -= deduction; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1863 } else { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1864 context->pending_hint_start = 0; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1865 } |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1866 if (context->fifo_read >= 0) { |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1867 int32_t idx = context->fifo_read; |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1868 do { |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1869 if (context->fifo[idx].cycle >= deduction) { |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1870 context->fifo[idx].cycle -= deduction; |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1871 } else { |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1872 context->fifo[idx].cycle = 0; |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1873 } |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1874 idx = (idx+1) & (FIFO_SIZE-1); |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
1875 } while(idx != context->fifo_write); |
65
aef6302770c2
Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents:
63
diff
changeset
|
1876 } |
aef6302770c2
Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents:
63
diff
changeset
|
1877 } |
aef6302770c2
Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents:
63
diff
changeset
|
1878 |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1879 uint32_t vdp_cycles_hslot_wrap_h40(vdp_context * context) |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1880 { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1881 if (context->hslot < 183) { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1882 return MCLKS_LINE - context->hslot * MCLKS_SLOT_H40; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1883 } else if (context->hslot < HSYNC_END_H40) { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1884 uint32_t before_hsync = context->hslot < HSYNC_SLOT_H40 ? (HSYNC_SLOT_H40 - context->hslot) * MCLKS_SLOT_H40 : 0; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1885 uint32_t hsync = 0; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1886 for (int i = context->hslot <= HSYNC_SLOT_H40 ? 0 : context->hslot - HSYNC_SLOT_H40; i < sizeof(h40_hsync_cycles)/sizeof(uint32_t); i++) |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1887 { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1888 hsync += h40_hsync_cycles[i]; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1889 } |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1890 uint32_t after_hsync = (256- HSYNC_END_H40) * MCLKS_SLOT_H40; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1891 return before_hsync + hsync + after_hsync; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1892 } else { |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1893 return (256-context->hslot) * MCLKS_SLOT_H40; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1894 } |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1895 } |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1896 |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1897 uint32_t vdp_cycles_next_line(vdp_context * context) |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1898 { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1899 if (context->regs[REG_MODE_4] & BIT_H40) { |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1900 if (context->hslot < LINE_CHANGE_H40) { |
697
7f96bd1cb1be
Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents:
680
diff
changeset
|
1901 return (LINE_CHANGE_H40 - context->hslot) * MCLKS_SLOT_H40; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1902 } else { |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1903 return vdp_cycles_hslot_wrap_h40(context) + LINE_CHANGE_H40 * MCLKS_SLOT_H40; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1904 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1905 } else { |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1906 if (context->hslot < LINE_CHANGE_H32) { |
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1907 return (LINE_CHANGE_H32 - context->hslot) * MCLKS_SLOT_H32; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1908 } else if (context->hslot < 148) { |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1909 return MCLKS_LINE - (context->hslot - LINE_CHANGE_H32) * MCLKS_SLOT_H32; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1910 } else { |
647
5d58dcd94733
Fix the HV counter and adjust the slots of certain VDP events
Michael Pavone <pavone@retrodev.com>
parents:
629
diff
changeset
|
1911 return (256-context->hslot + LINE_CHANGE_H32) * MCLKS_SLOT_H32; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1912 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1913 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1914 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1915 |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1916 uint32_t vdp_cycles_to_line(vdp_context * context, uint32_t target) |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1917 { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1918 uint32_t jump_start, jump_dst; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1919 if (context->flags2 & FLAG2_REGION_PAL) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1920 if (context->latched_mode & BIT_PAL) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1921 jump_start = 0x10B; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1922 jump_dst = 0x1D2; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1923 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1924 jump_start = 0x103; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1925 jump_dst = 0x1CA; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1926 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1927 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1928 if (context->latched_mode & BIT_PAL) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1929 jump_start = 0; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1930 jump_dst = 0; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1931 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1932 jump_start = 0xEB; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1933 jump_dst = 0x1E5; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1934 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1935 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1936 uint32_t lines; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1937 if (context->vcounter < target) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1938 if (target < jump_start) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1939 lines = target - context->vcounter; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1940 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1941 lines = jump_start - context->vcounter + target - jump_dst; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1942 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1943 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1944 if (context->vcounter < jump_start) { |
718
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
parents:
717
diff
changeset
|
1945 lines = jump_start - context->vcounter + 512 - jump_dst; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1946 } else { |
718
eaba6789f316
Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
parents:
717
diff
changeset
|
1947 lines = 512 - context->vcounter; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1948 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1949 if (target < jump_start) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1950 lines += target; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1951 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1952 lines += jump_start + target - jump_dst; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1953 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1954 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1955 return MCLKS_LINE * (lines - 1) + vdp_cycles_next_line(context); |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1956 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1957 |
680
4996369f1463
Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents:
678
diff
changeset
|
1958 uint32_t vdp_frame_end_line(vdp_context * context) |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1959 { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1960 uint32_t frame_end; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1961 if (context->flags2 & FLAG2_REGION_PAL) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1962 if (context->latched_mode & BIT_PAL) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1963 frame_end = PAL_INACTIVE_START + 8; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1964 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1965 frame_end = NTSC_INACTIVE_START + 8; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1966 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1967 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1968 if (context->latched_mode & BIT_PAL) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1969 frame_end = 512; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1970 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1971 frame_end = NTSC_INACTIVE_START + 8; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1972 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1973 } |
680
4996369f1463
Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents:
678
diff
changeset
|
1974 return frame_end; |
4996369f1463
Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents:
678
diff
changeset
|
1975 } |
4996369f1463
Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents:
678
diff
changeset
|
1976 |
4996369f1463
Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents:
678
diff
changeset
|
1977 uint32_t vdp_cycles_to_frame_end(vdp_context * context) |
4996369f1463
Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents:
678
diff
changeset
|
1978 { |
4996369f1463
Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents:
678
diff
changeset
|
1979 return context->cycles + vdp_cycles_to_line(context, vdp_frame_end_line(context)); |
4996369f1463
Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents:
678
diff
changeset
|
1980 } |
4996369f1463
Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents:
678
diff
changeset
|
1981 |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1982 uint32_t vdp_next_hint(vdp_context * context) |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1983 { |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1984 if (!(context->regs[REG_MODE_1] & BIT_HINT_EN)) { |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1985 return 0xFFFFFFFF; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1986 } |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1987 if (context->flags2 & FLAG2_HINT_PENDING) { |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
1988 return context->pending_hint_start; |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1989 } |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
1990 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1991 uint32_t hint_line; |
708
61faa298af07
Small horizontal interrupt fixes
Michael Pavone <pavone@retrodev.com>
parents:
705
diff
changeset
|
1992 if (context->vcounter + context->hint_counter >= inactive_start) { |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1993 hint_line = context->regs[REG_HINT]; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1994 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1995 hint_line = context->vcounter + context->hint_counter + 1; |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1996 } |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1997 |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
1998 return context->cycles + vdp_cycles_to_line(context, hint_line); |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1999 } |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2000 |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2001 uint32_t vdp_next_vint(vdp_context * context) |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2002 { |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
2003 if (!(context->regs[REG_MODE_2] & BIT_VINT_EN)) { |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2004 return 0xFFFFFFFF; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2005 } |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2006 if (context->flags2 & FLAG2_VINT_PENDING) { |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
2007 return context->pending_vint_start; |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2008 } |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2009 |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2010 |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2011 return vdp_next_vint_z80(context); |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2012 } |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2013 |
333 | 2014 uint32_t vdp_next_vint_z80(vdp_context * context) |
2015 { | |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
2016 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2017 if (context->vcounter == inactive_start) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2018 if (context->regs[REG_MODE_4] & BIT_H40) { |
699
d8a1fdec68fc
Fix frame counter increment and VINT cycle time calculation
Michael Pavone <pavone@retrodev.com>
parents:
697
diff
changeset
|
2019 if (context->hslot >= LINE_CHANGE_H40) { |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
2020 return context->cycles + vdp_cycles_hslot_wrap_h40(context) + VINT_SLOT_H40 * MCLKS_SLOT_H40; |
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
2021 } else if (context->hslot <= VINT_SLOT_H40) { |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2022 return context->cycles + (VINT_SLOT_H40 - context->hslot) * MCLKS_SLOT_H40; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2023 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2024 } else { |
699
d8a1fdec68fc
Fix frame counter increment and VINT cycle time calculation
Michael Pavone <pavone@retrodev.com>
parents:
697
diff
changeset
|
2025 if (context->hslot >= LINE_CHANGE_H32) { |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2026 if (context->hslot < 148) { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2027 return context->cycles + (VINT_SLOT_H32 + 148 - context->hslot + 256 - 233) * MCLKS_SLOT_H32; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2028 } else { |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2029 return context->cycles + (VINT_SLOT_H32 + 256 - context->hslot) * MCLKS_SLOT_H32; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2030 } |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
2031 } else if (context->hslot <= VINT_SLOT_H32) { |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2032 return context->cycles + (VINT_SLOT_H32 - context->hslot) * MCLKS_SLOT_H32; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2033 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2034 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2035 } |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2036 int32_t cycles_to_vint = vdp_cycles_to_line(context, inactive_start); |
622
b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
Michael Pavone <pavone@retrodev.com>
parents:
621
diff
changeset
|
2037 if (context->regs[REG_MODE_4] & BIT_H40) { |
717
22dbdf50d33c
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents:
714
diff
changeset
|
2038 cycles_to_vint += MCLKS_LINE - (LINE_CHANGE_H40 - VINT_SLOT_H40) * MCLKS_SLOT_H40; |
333 | 2039 } else { |
699
d8a1fdec68fc
Fix frame counter increment and VINT cycle time calculation
Michael Pavone <pavone@retrodev.com>
parents:
697
diff
changeset
|
2040 cycles_to_vint += (VINT_SLOT_H32 + 148 - LINE_CHANGE_H32 + 256 - 233) * MCLKS_SLOT_H32; |
333 | 2041 } |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
622
diff
changeset
|
2042 return context->cycles + cycles_to_vint; |
333 | 2043 } |
2044 | |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2045 void vdp_int_ack(vdp_context * context, uint16_t int_num) |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2046 { |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2047 if (int_num == 6) { |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2048 context->flags2 &= ~FLAG2_VINT_PENDING; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2049 } else if(int_num ==4) { |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2050 context->flags2 &= ~FLAG2_HINT_PENDING; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2051 } |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2052 } |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
2053 |