Mercurial > repos > blastem
annotate vdp.c @ 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
author | Michael Pavone <pavone@retrodev.com> |
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date | Tue, 17 Jun 2014 19:01:01 -0700 |
parents | 5196333b37a6 |
children | 66cc60215e5c |
rev | line source |
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1 /* |
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2 Copyright 2013 Michael Pavone |
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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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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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26 #define VINT_SLOT_H32 23 //33 slots before HSYNC, 20 during, 7 after TODO: confirm final number |
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27 #define HSYNC_SLOT_H40 240 |
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28 #define HSYNC_END_H40 (240+17) |
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29 #define HSYNC_END_H32 (33 * MCLKS_SLOT_H32) |
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30 #define HBLANK_START_H40 167 |
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31 #define HBLANK_END_H40 11 //should be 10.25 according to Nemesis IIRC |
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32 #define HBLANK_START_H32 134 |
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33 #define HBLANK_END_H32 8 //should be 7.5 according to Nemesis IIRC |
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34 #define FIFO_LATENCY 3 |
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35 |
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36 int32_t color_map[1 << 12]; |
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37 uint8_t levels[] = {0, 27, 49, 71, 87, 103, 119, 130, 146, 157, 174, 190, 206, 228, 255}; |
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38 |
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39 uint8_t debug_base[][3] = { |
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40 {127, 127, 127}, //BG |
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41 {0, 0, 127}, //A |
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42 {127, 0, 0}, //Window |
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43 {0, 127, 0}, //B |
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44 {127, 0, 127} //Sprites |
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45 }; |
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46 |
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47 uint8_t color_map_init_done; |
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48 |
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49 void init_vdp_context(vdp_context * context) |
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50 { |
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51 memset(context, 0, sizeof(*context)); |
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52 context->vdpmem = malloc(VRAM_SIZE); |
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53 memset(context->vdpmem, 0, VRAM_SIZE); |
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54 /* |
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55 */ |
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56 if (headless) { |
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57 context->oddbuf = context->framebuf = malloc(FRAMEBUF_ENTRIES * (32 / 8)); |
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58 memset(context->framebuf, 0, FRAMEBUF_ENTRIES * (32 / 8)); |
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59 context->evenbuf = malloc(FRAMEBUF_ENTRIES * (32 / 8)); |
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60 memset(context->evenbuf, 0, FRAMEBUF_ENTRIES * (32 / 8)); |
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61 context->b32 = 1; |
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62 } else { |
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63 render_alloc_surfaces(context); |
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64 context->b32 = render_depth() == 32; |
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65 } |
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66 context->framebuf = context->oddbuf; |
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67 context->linebuf = malloc(LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2); |
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68 memset(context->linebuf, 0, LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2); |
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69 context->tmp_buf_a = context->linebuf + LINEBUF_SIZE; |
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70 context->tmp_buf_b = context->tmp_buf_a + SCROLL_BUFFER_SIZE; |
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71 context->sprite_draws = MAX_DRAWS; |
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72 context->fifo_write = 0; |
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73 context->fifo_read = -1; |
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74 |
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75 if (!color_map_init_done) { |
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76 uint8_t b,g,r; |
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77 for (uint16_t color = 0; color < (1 << 12); color++) { |
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78 if (color & FBUF_SHADOW) { |
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79 b = levels[(color >> 9) & 0x7]; |
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80 g = levels[(color >> 5) & 0x7]; |
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81 r = levels[(color >> 1) & 0x7]; |
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82 } else if(color & FBUF_HILIGHT) { |
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83 b = levels[((color >> 9) & 0x7) + 7]; |
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84 g = levels[((color >> 5) & 0x7) + 7]; |
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85 r = levels[((color >> 1) & 0x7) + 7]; |
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86 } else { |
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87 b = levels[(color >> 8) & 0xE]; |
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88 g = levels[(color >> 4) & 0xE]; |
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89 r = levels[color & 0xE]; |
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90 } |
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91 color_map[color] = render_map_color(r, g, b); |
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92 } |
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93 color_map_init_done = 1; |
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94 } |
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95 for (uint8_t color = 0; color < (1 << (3 + 1 + 1 + 1)); color++) |
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96 { |
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97 uint8_t src = color & DBG_SRC_MASK; |
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98 if (src > DBG_SRC_S) { |
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99 context->debugcolors[color] = 0; |
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100 } else { |
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101 uint8_t r,g,b; |
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102 b = debug_base[src][0]; |
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103 g = debug_base[src][1]; |
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104 r = debug_base[src][2]; |
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105 if (color & DBG_PRIORITY) |
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106 { |
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107 if (b) { |
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108 b += 48; |
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109 } |
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110 if (g) { |
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111 g += 48; |
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112 } |
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113 if (r) { |
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114 r += 48; |
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115 } |
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116 } |
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117 if (color & DBG_SHADOW) { |
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118 b /= 2; |
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119 g /= 2; |
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120 r /=2 ; |
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121 } |
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122 if (color & DBG_HILIGHT) { |
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123 if (b) { |
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124 b += 72; |
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125 } |
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126 if (g) { |
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127 g += 72; |
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128 } |
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129 if (r) { |
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130 r += 72; |
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131 } |
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132 } |
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133 context->debugcolors[color] = render_map_color(r, g, b); |
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134 } |
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135 } |
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136 } |
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137 |
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138 int is_refresh(vdp_context * context, uint32_t slot) |
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139 { |
622
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140 if (context->regs[REG_MODE_4] & BIT_H40) { |
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141 return slot == 250 || slot == 26 || slot == 59 || slot == 90 || slot == 122 || slot == 154; |
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142 } else { |
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143 //TODO: Figure out which slots are refresh when display is off in 32-cell mode |
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144 //These numbers are guesses based on H40 numbers |
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145 return slot == 243 || slot == 19 || slot == 51 || slot == 83 || slot == 115; |
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146 //The numbers below are the refresh slots during active display |
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147 //return (slot == 29 || slot == 61 || slot == 93 || slot == 125); |
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148 } |
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149 } |
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150 |
21
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151 void render_sprite_cells(vdp_context * context) |
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152 { |
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153 if (context->cur_slot >= context->sprite_draws) { |
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154 sprite_draw * d = context->sprite_draw_list + context->cur_slot; |
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155 |
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156 uint16_t dir; |
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157 int16_t x; |
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158 if (d->h_flip) { |
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159 x = d->x_pos + 7; |
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160 dir = -1; |
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161 } else { |
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162 x = d->x_pos; |
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163 dir = 1; |
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164 } |
27
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165 //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
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166 context->cur_slot--; |
143
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167 for (uint16_t address = d->address; address != ((d->address+4) & 0xFFFF); address++) { |
27
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168 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) { |
494
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169 if (context->linebuf[x] && (context->vdpmem[address] >> 4)) { |
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170 context->flags2 |= FLAG2_SPRITE_COLLIDE; |
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171 } |
20
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172 context->linebuf[x] = (context->vdpmem[address] >> 4) | d->pal_priority; |
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173 } |
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174 x += dir; |
27
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175 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) { |
494
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176 if (context->linebuf[x] && (context->vdpmem[address] & 0xF)) { |
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177 context->flags2 |= FLAG2_SPRITE_COLLIDE; |
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178 } |
20
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179 context->linebuf[x] = (context->vdpmem[address] & 0xF) | d->pal_priority; |
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180 } |
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181 x += dir; |
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182 } |
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183 } |
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184 } |
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185 |
322
8e2fa485c0f2
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318
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186 void vdp_print_sprite_table(vdp_context * context) |
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187 { |
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188 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9; |
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189 uint16_t current_index = 0; |
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190 uint8_t count = 0; |
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191 do { |
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192 uint16_t address = current_index * 8 + sat_address; |
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193 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * 8; |
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194 uint8_t width = (((context->vdpmem[address+2] >> 2) & 0x3) + 1) * 8; |
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195 int16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & 0x1FF; |
323
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196 int16_t x = ((context->vdpmem[address+ 6] & 0x3) << 8 | context->vdpmem[address + 7]) & 0x1FF; |
322
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|
197 uint16_t link = context->vdpmem[address+3] & 0x7F; |
323
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198 uint8_t pal = context->vdpmem[address + 4] >> 5 & 0x3; |
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199 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
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diff
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|
200 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.
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505
diff
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|
201 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
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202 current_index = link; |
8e2fa485c0f2
Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview.
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203 count++; |
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204 } while (current_index != 0 && count < 80); |
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Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview.
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205 } |
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206 |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
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207 void vdp_print_reg_explain(vdp_context * context) |
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208 { |
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209 char * hscroll[] = {"full", "7-line", "cell", "line"}; |
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210 printf("**Mode Group**\n" |
1b00258b1f29
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211 "00: %.2X | H-ints %s, Pal Select %d, HVC latch %s, Display gen %s\n" |
1b00258b1f29
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212 "01: %.2X | Display %s, V-ints %s, Height: %d, Mode %d\n" |
1b00258b1f29
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213 "0B: %.2X | E-ints %s, V-Scroll: %s, H-Scroll: %s\n" |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
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214 "0C: %.2X | Width: %d, Shadow/Highlight: %s\n", |
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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215 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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216 context->regs[REG_MODE_1] & BIT_HVC_LATCH ? "enabled" : "disabled", context->regs[REG_MODE_1] & BIT_DISP_DIS ? "disabled" : "enabled", |
450
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Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty
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217 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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218 context->regs[REG_MODE_2] & BIT_PAL ? 30 : 28, context->regs[REG_MODE_2] & BIT_MODE_5 ? 5 : 4, |
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219 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", |
1b00258b1f29
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220 hscroll[context->regs[REG_MODE_3] & 0x3], |
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221 context->regs[REG_MODE_4], context->regs[REG_MODE_4] & BIT_H40 ? 40 : 32, context->regs[REG_MODE_4] & BIT_HILIGHT ? "enabled" : "disabled"); |
1b00258b1f29
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222 printf("\n**Table Group**\n" |
1b00258b1f29
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223 "02: %.2X | Scroll A Name Table: $%.4X\n" |
1b00258b1f29
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224 "03: %.2X | Window Name Table: $%.4X\n" |
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225 "04: %.2X | Scroll B Name Table: $%.4X\n" |
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226 "05: %.2X | Sprite Attribute Table: $%.4X\n" |
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227 "0D: %.2X | HScroll Data Table: $%.4X\n", |
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228 context->regs[REG_SCROLL_A], (context->regs[REG_SCROLL_A] & 0x38) << 10, |
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229 context->regs[REG_WINDOW], (context->regs[REG_WINDOW] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x3C : 0x3E)) << 10, |
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230 context->regs[REG_SCROLL_B], (context->regs[REG_SCROLL_B] & 0x7) << 13, |
621
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Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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231 context->regs[REG_SAT], (context->regs[REG_SAT] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x7E : 0x7F)) << 9, |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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232 context->regs[REG_HSCROLL], (context->regs[REG_HSCROLL] & 0x3F) << 10); |
327
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233 char * sizes[] = {"32", "64", "invalid", "128"}; |
1b00258b1f29
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234 printf("\n**Misc Group**\n" |
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235 "07: %.2X | Backdrop Color: $%X\n" |
1b00258b1f29
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236 "0A: %.2X | H-Int Counter: %u\n" |
1b00258b1f29
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237 "0F: %.2X | Auto-increment: $%X\n" |
1b00258b1f29
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238 "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.
Michael Pavone <pavone@retrodev.com>
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239 context->regs[REG_BG_COLOR], context->regs[REG_BG_COLOR], |
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>
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438
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240 context->regs[REG_HINT], context->regs[REG_HINT], |
327
1b00258b1f29
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241 context->regs[REG_AUTOINC], context->regs[REG_AUTOINC], |
1b00258b1f29
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242 context->regs[REG_SCROLL], sizes[context->regs[REG_SCROLL] & 0x3], sizes[context->regs[REG_SCROLL] >> 4 & 0x3]); |
621
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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243 char * src_types[] = {"68K", "68K", "Copy", "Fill"}; |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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244 printf("\n**DMA Group**\n" |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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245 "13: %.2X |\n" |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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246 "14: %.2X | DMA Length: $%.4X words\n" |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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247 "15: %.2X |\n" |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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248 "16: %.2X |\n" |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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249 "17: %.2X | DMA Source Address: $%.6X, Type: %s\n", |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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515
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250 context->regs[REG_DMALEN_L], |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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251 context->regs[REG_DMALEN_H], context->regs[REG_DMALEN_H] << 8 | context->regs[REG_DMALEN_L], |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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252 context->regs[REG_DMASRC_L], |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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253 context->regs[REG_DMASRC_M], |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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254 context->regs[REG_DMASRC_H], |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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255 context->regs[REG_DMASRC_H] << 17 | context->regs[REG_DMASRC_M] << 9 | context->regs[REG_DMASRC_L], |
5196333b37a6
Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
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parents:
515
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changeset
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256 src_types[context->regs[REG_DMASRC_H] >> 6 & 3]); |
438
b3cee2fe690b
Add address/cd registers to VDP debug message
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437
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257 printf("\n**Internal Group**\n" |
b3cee2fe690b
Add address/cd registers to VDP debug message
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258 "Address: %X\n" |
b3cee2fe690b
Add address/cd registers to VDP debug message
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259 "CD: %X\n" |
b3cee2fe690b
Add address/cd registers to VDP debug message
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260 "Pending: %s\n", |
b3cee2fe690b
Add address/cd registers to VDP debug message
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437
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changeset
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261 context->address, context->cd, (context->flags & FLAG_PENDING) ? "true" : "false"); |
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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262 |
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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263 //TODO: Window Group, DMA Group |
327
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Added some basic VDP debugging features to debugger. Fixed DMA enable bug
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264 } |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
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265 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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266 void scan_sprite_table(uint32_t line, vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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267 { |
f664eeb55cb4
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268 if (context->sprite_index && context->slot_counter) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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269 line += 1; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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changeset
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270 line &= 0xFF; |
413
36fbbced25c2
Initial work on interlace
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337
diff
changeset
|
271 uint16_t ymask, ymin; |
36fbbced25c2
Initial work on interlace
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272 uint8_t height_mult; |
36fbbced25c2
Initial work on interlace
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273 if (context->double_res) { |
36fbbced25c2
Initial work on interlace
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274 line *= 2; |
36fbbced25c2
Initial work on interlace
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275 if (context->framebuf != context->oddbuf) { |
36fbbced25c2
Initial work on interlace
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276 line++; |
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277 } |
36fbbced25c2
Initial work on interlace
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278 ymask = 0x3FF; |
36fbbced25c2
Initial work on interlace
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279 ymin = 256; |
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Initial work on interlace
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280 height_mult = 16; |
36fbbced25c2
Initial work on interlace
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281 } else { |
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Initial work on interlace
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282 ymask = 0x1FF; |
36fbbced25c2
Initial work on interlace
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283 ymin = 128; |
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Initial work on interlace
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284 height_mult = 8; |
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285 } |
20
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changeset
|
286 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
Michael Pavone <pavone@retrodev.com>
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621
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287 if (context->regs[REG_MODE_4] & BIT_H40) { |
38
898e3d035f42
Implement sprite index >= sprite limit triggers sprite limit behavior
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diff
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288 if (context->sprite_index >= MAX_SPRITES_FRAME) { |
898e3d035f42
Implement sprite index >= sprite limit triggers sprite limit behavior
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diff
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289 context->sprite_index = 0; |
898e3d035f42
Implement sprite index >= sprite limit triggers sprite limit behavior
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290 return; |
898e3d035f42
Implement sprite index >= sprite limit triggers sprite limit behavior
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diff
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|
291 } |
898e3d035f42
Implement sprite index >= sprite limit triggers sprite limit behavior
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37
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292 } else if(context->sprite_index >= MAX_SPRITES_FRAME_H32) { |
898e3d035f42
Implement sprite index >= sprite limit triggers sprite limit behavior
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diff
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293 context->sprite_index = 0; |
898e3d035f42
Implement sprite index >= sprite limit triggers sprite limit behavior
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294 return; |
898e3d035f42
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|
295 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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changeset
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296 //TODO: Read from SAT cache rather than from VRAM |
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297 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
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298 uint16_t address = context->sprite_index * 8 + sat_address; |
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299 line += ymin; |
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300 uint16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & ymask; |
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301 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * height_mult; |
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302 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height); |
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303 if (y <= line && line < (y + height)) { |
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304 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line); |
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305 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2]; |
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306 context->sprite_info_list[context->slot_counter].index = context->sprite_index; |
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307 context->sprite_info_list[context->slot_counter].y = y-ymin; |
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308 } |
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309 context->sprite_index = context->vdpmem[address+3] & 0x7F; |
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310 if (context->sprite_index && context->slot_counter) |
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311 { |
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312 address = context->sprite_index * 8 + sat_address; |
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313 y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & ymask; |
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314 height = ((context->vdpmem[address+2] & 0x3) + 1) * height_mult; |
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315 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height); |
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316 if (y <= line && line < (y + height)) { |
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317 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line); |
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318 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2]; |
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319 context->sprite_info_list[context->slot_counter].index = context->sprite_index; |
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320 context->sprite_info_list[context->slot_counter].y = y-ymin; |
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321 } |
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322 context->sprite_index = context->vdpmem[address+3] & 0x7F; |
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323 } |
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324 } |
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325 } |
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326 |
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327 void read_sprite_x(uint32_t line, vdp_context * context) |
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328 { |
34
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329 if (context->cur_slot >= context->slot_counter) { |
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330 if (context->sprite_draws) { |
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331 line += 1; |
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332 line &= 0xFF; |
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333 //in tiles |
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334 uint8_t width = ((context->sprite_info_list[context->cur_slot].size >> 2) & 0x3) + 1; |
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335 //in pixels |
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336 uint8_t height = ((context->sprite_info_list[context->cur_slot].size & 0x3) + 1) * 8; |
413
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337 if (context->double_res) { |
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338 line *= 2; |
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339 if (context->framebuf != context->oddbuf) { |
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340 line++; |
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341 } |
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342 height *= 2; |
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343 } |
34
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344 uint16_t att_addr = ((context->regs[REG_SAT] & 0x7F) << 9) + context->sprite_info_list[context->cur_slot].index * 8 + 4; |
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345 uint16_t tileinfo = (context->vdpmem[att_addr] << 8) | context->vdpmem[att_addr+1]; |
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346 uint8_t pal_priority = (tileinfo >> 9) & 0x70; |
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347 uint8_t row; |
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348 if (tileinfo & MAP_BIT_V_FLIP) { |
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349 row = (context->sprite_info_list[context->cur_slot].y + height - 1) - line; |
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350 } else { |
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351 row = line-context->sprite_info_list[context->cur_slot].y; |
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352 } |
413
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353 uint16_t address; |
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354 if (context->double_res) { |
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355 address = ((tileinfo & 0x3FF) << 6) + row * 4; |
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356 } else { |
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357 address = ((tileinfo & 0x7FF) << 5) + row * 4; |
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358 } |
323
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359 int16_t x = ((context->vdpmem[att_addr+ 2] & 0x3) << 8 | context->vdpmem[att_addr + 3]) & 0x1FF; |
36
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360 if (x) { |
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361 context->flags |= FLAG_CAN_MASK; |
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362 } else if(context->flags & (FLAG_CAN_MASK | FLAG_DOT_OFLOW)) { |
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363 context->flags |= FLAG_MASKED; |
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364 } |
450
3758bcdae5de
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365 |
36
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366 context->flags &= ~FLAG_DOT_OFLOW; |
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367 int16_t i; |
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368 if (context->flags & FLAG_MASKED) { |
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369 for (i=0; i < width && context->sprite_draws; i++) { |
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370 --context->sprite_draws; |
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371 context->sprite_draw_list[context->sprite_draws].x_pos = -128; |
34
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372 } |
36
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373 } else { |
34
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374 x -= 128; |
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375 int16_t base_x = x; |
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376 int16_t dir; |
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377 if (tileinfo & MAP_BIT_H_FLIP) { |
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378 x += (width-1) * 8; |
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379 dir = -8; |
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380 } else { |
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381 dir = 8; |
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382 } |
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|
383 //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
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diff
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|
384 for (i=0; i < width && context->sprite_draws; i++, x += dir) { |
34
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385 --context->sprite_draws; |
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|
386 context->sprite_draw_list[context->sprite_draws].address = address + i * height * 4; |
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387 context->sprite_draw_list[context->sprite_draws].x_pos = x; |
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388 context->sprite_draw_list[context->sprite_draws].pal_priority = pal_priority; |
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389 context->sprite_draw_list[context->sprite_draws].h_flip = (tileinfo & MAP_BIT_H_FLIP) ? 1 : 0; |
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390 } |
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|
391 } |
36
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392 if (i < width) { |
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393 context->flags |= FLAG_DOT_OFLOW; |
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394 } |
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|
395 context->cur_slot--; |
20
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396 } else { |
34
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397 context->flags |= FLAG_DOT_OFLOW; |
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398 } |
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|
399 } |
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|
400 } |
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changeset
|
401 |
427
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
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426
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402 void write_cram(vdp_context * context, uint16_t address, uint16_t value) |
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|
403 { |
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changeset
|
404 uint16_t addr = (address/2) & (CRAM_SIZE-1); |
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changeset
|
405 context->cram[addr] = value; |
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changeset
|
406 context->colors[addr] = color_map[value & 0xEEE]; |
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426
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changeset
|
407 context->colors[addr + CRAM_SIZE] = color_map[(value & 0xEEE) | FBUF_SHADOW]; |
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changeset
|
408 context->colors[addr + CRAM_SIZE*2] = color_map[(value & 0xEEE) | FBUF_HILIGHT]; |
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426
diff
changeset
|
409 } |
2802318c14e1
Refactor duplicated CRAM writing code and fix a bug in the process
Mike Pavone <pavone@retrodev.com>
parents:
426
diff
changeset
|
410 |
473
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
411 #define VRAM_READ 0 //0000 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
412 #define VRAM_WRITE 1 //0001 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
413 //2 would trigger register write 0010 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
414 #define CRAM_WRITE 3 //0011 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
415 #define VSRAM_READ 4 //0100 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
416 #define VSRAM_WRITE 5//0101 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
417 //6 would trigger regsiter write 0110 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
418 //7 is a mystery |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
419 #define CRAM_READ 8 //1000 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
420 //9 is also a mystery //1001 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
421 //A would trigger register write 1010 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
422 //B is a mystery 1011 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
423 #define VRAM_READ8 0xC //1100 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
424 //D is a mystery 1101 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
425 //E would trigger register write 1110 |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
426 //F is a mystery 1111 |
75 | 427 #define DMA_START 0x20 |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
428 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
429 void external_slot(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
430 { |
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
|
431 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
|
432 /*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
|
433 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
|
434 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
|
435 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
|
436 }*/ |
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
|
437 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
|
438 switch (start->cd & 0xF) |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
439 { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
440 case VRAM_WRITE: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
441 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
|
442 //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
|
443 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
|
444 } 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
|
445 //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
|
446 context->vdpmem[start->address] = start->value >> 8; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
447 start->partial = 1; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
448 //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
|
449 return; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
450 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
451 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
452 case CRAM_WRITE: { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
453 //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
|
454 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
|
455 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
456 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
457 case VSRAM_WRITE: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
458 if (((start->address/2) & 63) < VSRAM_SIZE) { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
459 //printf("VSRAM Write: %X to %X\n", start->value, context->address); |
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
|
460 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
|
461 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
462 |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
463 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
464 } |
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
|
465 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
|
466 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
|
467 context->fifo_read = -1; |
460
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 } else { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
470 context->flags |= FLAG_UNUSED_SLOT; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
471 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
472 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
473 |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
474 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
|
475 { |
75 | 476 //TODO: Figure out what happens if CD bit 4 is not set in DMA copy mode |
477 //TODO: Figure out what happens when CD:0-3 is not set to a write mode in DMA operations | |
478 //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
|
479 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
|
480 return; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
481 } |
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
|
482 fifo_entry * cur = NULL; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
483 switch(context->regs[REG_DMASRC_H] & 0xC0) |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
484 { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
485 //68K -> VDP |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
486 case 0: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
487 case 0x40: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
488 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
|
489 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
|
490 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
|
491 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
|
492 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
|
493 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
|
494 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
|
495 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
|
496 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
|
497 } |
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
|
498 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
|
499 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
500 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
501 //Copy |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
502 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
|
503 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
|
504 //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
|
505 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
|
506 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
|
507 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
|
508 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
|
509 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
|
510 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
|
511 cur->cd = VRAM_WRITE; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
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diff
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512 context->flags &= ~FLAG_UNUSED_SLOT; |
54
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43
diff
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|
513 } |
460
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|
514 break; |
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|
515 case 0x80: |
478
2e4a4188cfb0
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|
516 if (context->fifo_read < 0) { |
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477
diff
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|
517 context->fifo_read = (context->fifo_write-1) & (FIFO_SIZE-1); |
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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.
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477
diff
changeset
|
518 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.
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parents:
477
diff
changeset
|
519 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.
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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->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
|
522 } |
460
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Mike Pavone <pavone@retrodev.com>
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changeset
|
523 break; |
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diff
changeset
|
524 } |
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diff
changeset
|
525 |
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
|
526 if (cur) { |
460
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454
diff
changeset
|
527 context->regs[REG_DMASRC_L] += 1; |
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diff
changeset
|
528 if (!context->regs[REG_DMASRC_L]) { |
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diff
changeset
|
529 context->regs[REG_DMASRC_M] += 1; |
54
3b79cbcf6846
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parents:
43
diff
changeset
|
530 } |
460
788ba843a731
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parents:
454
diff
changeset
|
531 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
|
532 uint16_t dma_len = ((context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L]) - 1; |
460
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changeset
|
533 context->regs[REG_DMALEN_H] = dma_len >> 8; |
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parents:
454
diff
changeset
|
534 context->regs[REG_DMALEN_L] = dma_len; |
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diff
changeset
|
535 if (!dma_len) { |
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diff
changeset
|
536 //printf("DMA end at cycle %d\n", context->cycles); |
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|
537 context->flags &= ~FLAG_DMA_RUN; |
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diff
changeset
|
538 context->cd &= 0xF; |
75 | 539 } |
54
3b79cbcf6846
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parents:
43
diff
changeset
|
540 } |
20
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diff
changeset
|
541 } |
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542 |
40 | 543 #define WINDOW_RIGHT 0x80 |
544 #define WINDOW_DOWN 0x80 | |
545 | |
25
4d0c20ad815a
Fix vertical scroll value for plane B
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24
diff
changeset
|
546 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
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547 { |
417
acdd6c5240fe
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diff
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548 uint16_t window_line_shift, v_offset_mask, vscroll_shift; |
414
51ee0f117365
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413
diff
changeset
|
549 if (context->double_res) { |
413
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diff
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550 line *= 2; |
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diff
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|
551 if (context->framebuf != context->oddbuf) { |
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diff
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|
552 line++; |
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diff
changeset
|
553 } |
417
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parents:
415
diff
changeset
|
554 window_line_shift = 4; |
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Fix window layer in double res interlace mode
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diff
changeset
|
555 v_offset_mask = 0xF; |
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diff
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|
556 vscroll_shift = 4; |
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Fix window layer in double res interlace mode
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|
557 } else { |
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|
558 window_line_shift = 3; |
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559 v_offset_mask = 0x7; |
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diff
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560 vscroll_shift = 3; |
414
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diff
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|
561 } |
40 | 562 if (!vsram_off) { |
563 uint16_t left_col, right_col; | |
564 if (context->regs[REG_WINDOW_H] & WINDOW_RIGHT) { | |
41
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diff
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|
565 left_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2; |
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40
diff
changeset
|
566 right_col = 42; |
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parents:
40
diff
changeset
|
567 } else { |
40 | 568 left_col = 0; |
569 right_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2; | |
570 if (right_col) { | |
571 right_col += 2; | |
572 } | |
573 } | |
41
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diff
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|
574 uint16_t top_line, bottom_line; |
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diff
changeset
|
575 if (context->regs[REG_WINDOW_V] & WINDOW_DOWN) { |
417
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diff
changeset
|
576 top_line = (context->regs[REG_WINDOW_V] & 0x1F) << window_line_shift; |
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diff
changeset
|
577 bottom_line = context->double_res ? 481 : 241; |
41
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diff
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|
578 } else { |
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40
diff
changeset
|
579 top_line = 0; |
417
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diff
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|
580 bottom_line = (context->regs[REG_WINDOW_V] & 0x1F) << window_line_shift; |
41
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40
diff
changeset
|
581 } |
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40
diff
changeset
|
582 if ((column >= left_col && column < right_col) || (line >= top_line && line < bottom_line)) { |
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parents:
40
diff
changeset
|
583 uint16_t address = context->regs[REG_WINDOW] << 10; |
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More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
584 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
|
585 if (context->regs[REG_MODE_4] & BIT_H40) { |
41
e591004487bc
More correct window support, maybe
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parents:
40
diff
changeset
|
586 address &= 0xF000; |
417
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Fix window layer in double res interlace mode
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415
diff
changeset
|
587 line_offset = (((line) >> vscroll_shift) * 64 * 2) & 0xFFF; |
41
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parents:
40
diff
changeset
|
588 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
|
589 |
41
e591004487bc
More correct window support, maybe
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parents:
40
diff
changeset
|
590 } else { |
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More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
591 address &= 0xF800; |
417
acdd6c5240fe
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Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
592 line_offset = (((line) >> vscroll_shift) * 32 * 2) & 0xFFF; |
41
e591004487bc
More correct window support, maybe
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parents:
40
diff
changeset
|
593 mask = 0x3F; |
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Mike Pavone <pavone@retrodev.com>
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40
diff
changeset
|
594 } |
417
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
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415
diff
changeset
|
595 if (context->double_res) { |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
596 mask <<= 1; |
acdd6c5240fe
Fix window layer in double res interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
415
diff
changeset
|
597 mask |= 1; |
acdd6c5240fe
Fix window layer in double res interlace mode
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parents:
415
diff
changeset
|
598 } |
42
6653e67a6811
Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents:
41
diff
changeset
|
599 offset = address + line_offset + (((column - 2) * 2) & mask); |
41
e591004487bc
More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents:
40
diff
changeset
|
600 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
|
601 //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
|
602 offset = address + line_offset + (((column - 1) * 2) & mask); |
41
e591004487bc
More correct window support, maybe
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parents:
40
diff
changeset
|
603 context->col_2 = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
417
acdd6c5240fe
Fix window layer in double res interlace mode
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parents:
415
diff
changeset
|
604 context->v_offset = (line) & v_offset_mask; |
41
e591004487bc
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parents:
40
diff
changeset
|
605 context->flags |= FLAG_WINDOW; |
e591004487bc
More correct window support, maybe
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parents:
40
diff
changeset
|
606 return; |
40 | 607 } |
608 context->flags &= ~FLAG_WINDOW; | |
609 } | |
20
f664eeb55cb4
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parents:
diff
changeset
|
610 uint16_t vscroll; |
f664eeb55cb4
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parents:
diff
changeset
|
611 switch(context->regs[REG_SCROLL] & 0x30) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
612 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
613 case 0: |
f664eeb55cb4
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
614 vscroll = 0xFF; |
f664eeb55cb4
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
615 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
616 case 0x10: |
f664eeb55cb4
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parents:
diff
changeset
|
617 vscroll = 0x1FF; |
f664eeb55cb4
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parents:
diff
changeset
|
618 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
619 case 0x20: |
f664eeb55cb4
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parents:
diff
changeset
|
620 //TODO: Verify this behavior |
f664eeb55cb4
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parents:
diff
changeset
|
621 vscroll = 0; |
f664eeb55cb4
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parents:
diff
changeset
|
622 break; |
f664eeb55cb4
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parents:
diff
changeset
|
623 case 0x30: |
f664eeb55cb4
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parents:
diff
changeset
|
624 vscroll = 0x3FF; |
f664eeb55cb4
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parents:
diff
changeset
|
625 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
626 } |
414
51ee0f117365
Fix vscroll calculation in double resultion interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
413
diff
changeset
|
627 if (context->double_res) { |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
628 vscroll <<= 1; |
36fbbced25c2
Initial work on interlace
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parents:
337
diff
changeset
|
629 vscroll |= 1; |
414
51ee0f117365
Fix vscroll calculation in double resultion interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
413
diff
changeset
|
630 } |
454
e9b6fe443bf2
Fix per-column scrolling bug
Mike Pavone <pavone@retrodev.com>
parents:
453
diff
changeset
|
631 vscroll &= (context->vsram[(context->regs[REG_MODE_3] & BIT_VSCROLL ? (column-2)&63 : 0) + vsram_off] + line); |
414
51ee0f117365
Fix vscroll calculation in double resultion interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
413
diff
changeset
|
632 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
changeset
|
633 //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
51ee0f117365
Fix vscroll calculation in double resultion interlace mode
Mike Pavone <pavone@retrodev.com>
parents:
413
diff
changeset
|
634 vscroll >>= vscroll_shift; |
20
f664eeb55cb4
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parents:
diff
changeset
|
635 uint16_t hscroll_mask; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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636 uint16_t v_mul; |
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637 switch(context->regs[REG_SCROLL] & 0x3) |
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638 { |
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639 case 0: |
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640 hscroll_mask = 0x1F; |
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641 v_mul = 64; |
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642 break; |
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643 case 0x1: |
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644 hscroll_mask = 0x3F; |
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645 v_mul = 128; |
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646 break; |
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647 case 0x2: |
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648 //TODO: Verify this behavior |
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649 hscroll_mask = 0; |
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650 v_mul = 0; |
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651 break; |
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652 case 0x3: |
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653 hscroll_mask = 0x7F; |
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654 v_mul = 256; |
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655 break; |
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656 } |
28 | 657 uint16_t hscroll, offset; |
658 for (int i = 0; i < 2; i++) { | |
39
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659 hscroll = (column - 2 + i - ((hscroll_val/8) & 0xFFFE)) & hscroll_mask; |
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660 offset = address + ((vscroll * v_mul + hscroll*2) & 0x1FFF); |
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661 //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 | 662 uint16_t col_val = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
663 if (i) { | |
664 context->col_2 = col_val; | |
665 } else { | |
666 context->col_1 = col_val; | |
667 } | |
668 } | |
20
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669 } |
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670 |
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671 void read_map_scroll_a(uint16_t column, uint32_t line, vdp_context * context) |
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672 { |
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673 read_map_scroll(column, 0, line, (context->regs[REG_SCROLL_A] & 0x38) << 10, context->hscroll_a, context); |
20
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674 } |
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675 |
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676 void read_map_scroll_b(uint16_t column, uint32_t line, vdp_context * context) |
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677 { |
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678 read_map_scroll(column, 1, line, (context->regs[REG_SCROLL_B] & 0x7) << 13, context->hscroll_b, context); |
20
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679 } |
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680 |
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681 void render_map(uint16_t col, uint8_t * tmp_buf, uint8_t offset, vdp_context * context) |
20
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682 { |
413
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683 uint16_t address; |
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684 uint8_t shift, add; |
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685 if (context->double_res) { |
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686 address = ((col & 0x3FF) << 6); |
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687 shift = 1; |
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688 add = context->framebuf != context->oddbuf ? 1 : 0; |
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689 } else { |
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690 address = ((col & 0x7FF) << 5); |
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691 shift = 0; |
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692 add = 0; |
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693 } |
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694 if (col & MAP_BIT_V_FLIP) { |
414
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695 address += 28 - 4 * context->v_offset/*((context->v_offset << shift) + add)*/; |
20
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696 } else { |
414
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|
697 address += 4 * context->v_offset/*((context->v_offset << shift) + add)*/; |
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698 } |
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699 uint16_t pal_priority = (col >> 9) & 0x70; |
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|
700 int32_t dir; |
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|
701 if (col & MAP_BIT_H_FLIP) { |
436
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702 offset += 7; |
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|
703 offset &= SCROLL_BUFFER_MASK; |
20
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704 dir = -1; |
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diff
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|
705 } else { |
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|
706 dir = 1; |
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diff
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|
707 } |
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changeset
|
708 for (uint32_t i=0; i < 4; i++, address++) |
f664eeb55cb4
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diff
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|
709 { |
436
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710 tmp_buf[offset] = pal_priority | (context->vdpmem[address] >> 4); |
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711 offset += dir; |
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|
712 offset &= SCROLL_BUFFER_MASK; |
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713 tmp_buf[offset] = pal_priority | (context->vdpmem[address] & 0xF); |
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diff
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714 offset += dir; |
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715 offset &= SCROLL_BUFFER_MASK; |
20
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|
716 } |
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Mike Pavone <pavone@retrodev.com>
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|
717 } |
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diff
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|
718 |
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Mike Pavone <pavone@retrodev.com>
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diff
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|
719 void render_map_1(vdp_context * context) |
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diff
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|
720 { |
436
e341fd5aa996
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721 render_map(context->col_1, context->tmp_buf_a, context->buf_a_off, context); |
20
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diff
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|
722 } |
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diff
changeset
|
723 |
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parents:
diff
changeset
|
724 void render_map_2(vdp_context * context) |
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diff
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|
725 { |
436
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Mike Pavone <pavone@retrodev.com>
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726 render_map(context->col_2, context->tmp_buf_a, context->buf_a_off+8, context); |
20
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diff
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|
727 } |
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diff
changeset
|
728 |
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diff
changeset
|
729 void render_map_3(vdp_context * context) |
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parents:
diff
changeset
|
730 { |
436
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427
diff
changeset
|
731 render_map(context->col_1, context->tmp_buf_b, context->buf_b_off, context); |
20
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diff
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|
732 } |
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diff
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|
733 |
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diff
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|
734 void render_map_output(uint32_t line, int32_t col, vdp_context * context) |
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parents:
diff
changeset
|
735 { |
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parents:
diff
changeset
|
736 if (line >= 240) { |
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parents:
diff
changeset
|
737 return; |
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parents:
diff
changeset
|
738 } |
436
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427
diff
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|
739 render_map(context->col_2, context->tmp_buf_b, context->buf_b_off+8, context); |
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
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parents:
424
diff
changeset
|
740 uint16_t *dst; |
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
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diff
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|
741 uint32_t *dst32; |
436
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diff
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742 uint8_t *sprite_buf, *plane_a, *plane_b; |
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427
diff
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|
743 int plane_a_off, plane_b_off; |
20
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diff
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|
744 if (col) |
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diff
changeset
|
745 { |
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parents:
diff
changeset
|
746 col-=2; |
426
add9e2f5c0e3
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parents:
424
diff
changeset
|
747 if (context->b32) { |
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
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parents:
424
diff
changeset
|
748 dst32 = context->framebuf; |
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
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|
749 dst32 += line * 320 + col * 8; |
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
|
750 } else { |
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
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424
diff
changeset
|
751 dst = context->framebuf; |
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
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parents:
424
diff
changeset
|
752 dst += line * 320 + col * 8; |
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
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diff
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|
753 } |
20
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diff
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|
754 sprite_buf = context->linebuf + col * 8; |
437
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Restore one of the VDP debugging modes
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parents:
436
diff
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|
755 uint8_t a_src, src; |
40 | 756 if (context->flags & FLAG_WINDOW) { |
436
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Mike Pavone <pavone@retrodev.com>
parents:
427
diff
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757 plane_a_off = context->buf_a_off; |
437
afbea09d7fb4
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Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
758 a_src = DBG_SRC_W; |
40 | 759 } else { |
436
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parents:
427
diff
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|
760 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
|
761 a_src = DBG_SRC_A; |
40 | 762 } |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
763 plane_b_off = context->buf_b_off - (context->hscroll_b & 0xF); |
30 | 764 //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
|
765 |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
766 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
|
767 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
|
768 uint8_t pixel; |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
769 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
|
770 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
|
771 uint32_t * colors = context->colors; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
772 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
|
773 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
|
774 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
|
775 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
|
776 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
|
777 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
|
778 } |
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
|
779 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
|
780 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
|
781 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
|
782 } |
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
|
783 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
|
784 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
|
785 if (sprite_color == 0x3E) { |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
786 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
|
787 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
|
788 } 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
|
789 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
|
790 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
|
791 } 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
|
792 pixel = *sprite_buf; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
793 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
|
794 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
|
795 src |= DBG_SHADOW; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
796 colors += CRAM_SIZE; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
797 } |
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
|
798 |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
799 } |
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
|
800 } 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
|
801 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
|
802 src |= DBG_SHADOW; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
803 } |
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
|
804 pixel &= 0x3F; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
805 uint32_t outpixel; |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
806 if (context->debug) { |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
807 outpixel = context->debugcolors[src]; |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
808 } else { |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
809 outpixel = colors[pixel]; |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
810 } |
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
|
811 if (context->b32) { |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
812 *(dst32++) = 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
|
813 } else { |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
814 *(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
|
815 } |
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
|
816 //*dst = (context->cram[pixel & 0x3F] & 0xEEE) | ((pixel & BUF_BIT_PRIORITY) ? FBUF_BIT_PRIORITY : 0) | src; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
817 } |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
818 } else { |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
819 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
|
820 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
|
821 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
|
822 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
|
823 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
|
824 if (*plane_b & 0xF) { |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
825 pixel = *plane_b; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
826 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
|
827 } |
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 (*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
|
829 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
|
830 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
|
831 } |
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 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
|
833 pixel = *sprite_buf; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
834 src = DBG_SRC_S; |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
835 } |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
836 uint32_t outpixel; |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
837 if (context->debug) { |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
838 outpixel = context->debugcolors[src]; |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
839 } else { |
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
840 outpixel = context->colors[pixel & 0x3F]; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
841 } |
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
|
842 if (context->b32) { |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
843 *(dst32++) = 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
|
844 } else { |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
845 *(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
|
846 } |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
847 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
848 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
849 } |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
850 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
|
851 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
|
852 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
853 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
854 #define COLUMN_RENDER_BLOCK(column, startcyc) \ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
855 case startcyc:\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
856 read_map_scroll_a(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
857 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
858 case (startcyc+1):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
859 external_slot(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
860 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
861 case (startcyc+2):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
862 render_map_1(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
863 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
864 case (startcyc+3):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
865 render_map_2(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
866 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
867 case (startcyc+4):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
868 read_map_scroll_b(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
869 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
870 case (startcyc+5):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
871 read_sprite_x(line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
872 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
873 case (startcyc+6):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
874 render_map_3(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
875 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
876 case (startcyc+7):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
877 render_map_output(line, column, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
878 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
879 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
880 #define COLUMN_RENDER_BLOCK_REFRESH(column, startcyc) \ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
881 case startcyc:\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
882 read_map_scroll_a(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
883 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
884 case (startcyc+1):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
885 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
886 case (startcyc+2):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
887 render_map_1(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
888 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
889 case (startcyc+3):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
890 render_map_2(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
891 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
892 case (startcyc+4):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
893 read_map_scroll_b(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
894 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
895 case (startcyc+5):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
896 read_sprite_x(line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
897 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
898 case (startcyc+6):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
899 render_map_3(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
900 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
901 case (startcyc+7):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
902 render_map_output(line, column, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
903 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
904 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
905 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
|
906 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
907 uint16_t address; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
908 uint32_t mask; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
909 switch(linecyc) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
910 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
911 //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
|
912 case 167: |
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
|
913 context->cur_slot = MAX_DRAWS-1; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
914 memset(context->linebuf, 0, LINEBUF_SIZE); |
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
|
915 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
|
916 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
|
917 case 170: |
329
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
918 if (line == 0xFF) { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
919 external_slot(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
920 } else { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
921 render_sprite_cells(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
922 } |
20
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 //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
|
925 case 171: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
926 render_sprite_cells( context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
927 context->sprite_index = 0x80; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
928 context->slot_counter = MAX_SPRITES_LINE; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
929 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
930 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
|
931 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
|
932 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
|
933 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
|
934 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
|
935 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
|
936 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
|
937 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
|
938 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
|
939 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
|
940 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
|
941 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
|
942 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
|
943 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
|
944 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
|
945 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
|
946 case 233: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
947 //!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
|
948 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
|
949 case 235: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
950 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
951 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
952 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
|
953 case 236: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
954 external_slot(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
955 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
|
956 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
|
957 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
|
958 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
|
959 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
|
960 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
|
961 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
|
962 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
|
963 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
|
964 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
|
965 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
|
966 case 247: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
967 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
968 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
969 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
|
970 case 248: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
971 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
972 mask = 0; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
973 if (context->regs[REG_MODE_3] & 0x2) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
974 mask |= 0xF8; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
975 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
976 if (context->regs[REG_MODE_3] & 0x1) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
977 mask |= 0x7; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
978 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
979 line &= mask; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
980 address += line * 4; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
981 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
|
982 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
|
983 //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
|
984 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
|
985 case 249: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
986 //!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
|
987 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
|
988 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
|
989 case 252: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
990 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
991 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
992 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
|
993 case 253: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
994 read_map_scroll_a(0, line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
995 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
|
996 case 254: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
997 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
998 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
999 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
|
1000 case 255: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1001 render_map_1(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1002 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1003 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
|
1004 case 0: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1005 render_map_2(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1006 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1007 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
|
1008 case 1: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1009 read_map_scroll_b(0, line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1010 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
|
1011 case 2: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1012 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1013 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1014 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
|
1015 case 3: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1016 render_map_3(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1017 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1018 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
|
1019 case 4: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1020 render_map_output(line, 0, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1021 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1022 //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
|
1023 //filled rather than the number of available slots |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1024 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; |
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1025 context->cur_slot = MAX_SPRITES_LINE-1; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1026 context->sprite_draws = MAX_DRAWS; |
36
04672c060062
Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents:
35
diff
changeset
|
1027 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1028 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
|
1029 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
|
1030 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
|
1031 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
|
1032 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
|
1033 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
|
1034 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
|
1035 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
|
1036 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
|
1037 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
|
1038 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
|
1039 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
|
1040 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
|
1041 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
|
1042 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
|
1043 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
|
1044 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
|
1045 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
|
1046 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
|
1047 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
|
1048 COLUMN_RENDER_BLOCK_REFRESH(40, 157) |
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
|
1049 case 165: |
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 166: |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1051 external_slot(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1052 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1053 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1054 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1055 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1056 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
|
1057 { |
37 | 1058 uint16_t address; |
1059 uint32_t mask; | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1060 switch(linecyc) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1061 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
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1062 //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:
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1063 case 134: |
37 | 1064 context->cur_slot = MAX_DRAWS_H32-1; |
1065 memset(context->linebuf, 0, LINEBUF_SIZE); | |
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
|
1066 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
|
1067 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:
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diff
changeset
|
1068 case 137: |
329
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1069 if (line == 0xFF) { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
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parents:
328
diff
changeset
|
1070 external_slot(context); |
fd5f6577db9b
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|
1071 } else { |
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Implement first line/last line weirdness in VDP
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parents:
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changeset
|
1072 render_sprite_cells(context); |
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diff
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1073 } |
20
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Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
1074 break; |
37 | 1075 //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
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changeset
|
1076 case 138: |
37 | 1077 render_sprite_cells( context); |
1078 context->sprite_index = 0x80; | |
1079 context->slot_counter = MAX_SPRITES_LINE_H32; | |
1080 scan_sprite_table(line, context); | |
20
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Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
1081 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
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changeset
|
1082 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
|
1083 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
|
1084 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
|
1085 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
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changeset
|
1086 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
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changeset
|
1087 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
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changeset
|
1088 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
|
1089 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:
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diff
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|
1090 case 147: |
37 | 1091 render_sprite_cells(context); |
1092 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:
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|
1093 case 233: |
37 | 1094 external_slot(context); |
20
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diff
changeset
|
1095 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:
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changeset
|
1096 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
|
1097 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
|
1098 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
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changeset
|
1099 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:
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changeset
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1100 case 238: |
37 | 1101 //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
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changeset
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1102 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
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changeset
|
1103 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
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changeset
|
1104 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
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changeset
|
1105 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
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changeset
|
1106 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
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changeset
|
1107 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:
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|
1108 case 245: |
37 | 1109 render_sprite_cells(context); |
1110 scan_sprite_table(line, context); | |
20
f664eeb55cb4
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parents:
diff
changeset
|
1111 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:
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changeset
|
1112 case 246: |
37 | 1113 external_slot(context); |
20
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Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
1114 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:
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changeset
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1115 case 247: |
37 | 1116 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
1117 mask = 0; | |
1118 if (context->regs[REG_MODE_3] & 0x2) { | |
1119 mask |= 0xF8; | |
1120 } | |
1121 if (context->regs[REG_MODE_3] & 0x1) { | |
1122 mask |= 0x7; | |
1123 } | |
1124 line &= mask; | |
1125 address += line * 4; | |
1126 context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1]; | |
1127 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3]; | |
1128 //printf("%d: HScroll A: %d, HScroll B: %d\n", line, context->hscroll_a, context->hscroll_b); | |
20
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parents:
diff
changeset
|
1129 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
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changeset
|
1130 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
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changeset
|
1131 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
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changeset
|
1132 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:
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changeset
|
1133 case 251: |
37 | 1134 render_sprite_cells(context); |
1135 scan_sprite_table(line, context); | |
20
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parents:
diff
changeset
|
1136 break; |
37 | 1137 //!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:
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|
1138 case 252: |
37 | 1139 read_map_scroll_a(0, line, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
1140 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:
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|
1141 case 253: |
37 | 1142 render_sprite_cells(context); |
1143 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1144 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:
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changeset
|
1145 case 254: |
37 | 1146 render_map_1(context); |
1147 scan_sprite_table(line, context);//Just a guess | |
20
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1148 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:
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changeset
|
1149 case 255: |
37 | 1150 render_map_2(context); |
1151 scan_sprite_table(line, context);//Just a guess | |
20
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1152 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:
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diff
changeset
|
1153 case 0: |
37 | 1154 read_map_scroll_b(0, line, context); |
20
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1155 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:
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diff
changeset
|
1156 case 1: |
37 | 1157 render_sprite_cells(context); |
1158 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1159 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:
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diff
changeset
|
1160 case 2: |
37 | 1161 render_map_3(context); |
1162 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
|
1163 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:
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diff
changeset
|
1164 case 3: |
37 | 1165 render_map_output(line, 0, context); |
1166 scan_sprite_table(line, context);//Just a guess | |
1167 //reverse context slot counter so it counts the number of sprite slots | |
1168 //filled rather than the number of available slots | |
1169 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; | |
1170 context->cur_slot = MAX_SPRITES_LINE_H32-1; | |
1171 context->sprite_draws = MAX_DRAWS_H32; | |
1172 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1173 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
|
1174 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
|
1175 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
|
1176 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
|
1177 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
|
1178 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
|
1179 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
|
1180 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
|
1181 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
|
1182 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
|
1183 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
|
1184 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
|
1185 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
|
1186 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
|
1187 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
|
1188 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
|
1189 COLUMN_RENDER_BLOCK_REFRESH(32, 124) |
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
|
1190 case 132: |
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 133: |
37 | 1192 external_slot(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1193 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1194 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1195 } |
503
eee6be465c47
Small optimization for H40 mode
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parents:
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diff
changeset
|
1196 |
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Small optimization for H40 mode
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parents:
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diff
changeset
|
1197 void vdp_h40_line(uint32_t line, vdp_context * context) |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
1198 { |
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Small optimization for H40 mode
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parents:
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diff
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|
1199 context->cur_slot = MAX_DRAWS-1; |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
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|
1200 memset(context->linebuf, 0, LINEBUF_SIZE); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1201 if (line == 0xFF) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
1202 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1203 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1204 run_dma_src(context, 0); |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
1205 } |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
1206 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
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parents:
499
diff
changeset
|
1207 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
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parents:
499
diff
changeset
|
1208 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
1209 } |
eee6be465c47
Small optimization for H40 mode
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parents:
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diff
changeset
|
1210 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
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parents:
499
diff
changeset
|
1211 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1212 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
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parents:
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diff
changeset
|
1213 } |
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Small optimization for H40 mode
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parents:
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diff
changeset
|
1214 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1215 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1216 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
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|
1217 } |
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
|
1218 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
|
1219 { |
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
|
1220 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
|
1221 } |
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
|
1222 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
|
1223 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
|
1224 { |
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
|
1225 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
|
1226 } |
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
|
1227 //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
|
1228 //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
|
1229 //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
|
1230 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
|
1231 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
|
1232 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
|
1233 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
|
1234 { |
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
|
1235 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
|
1236 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
|
1237 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
|
1238 } |
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
|
1239 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
|
1240 |
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
|
1241 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
|
1242 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
|
1243 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
|
1244 } |
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
|
1245 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
|
1246 |
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
|
1247 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
|
1248 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
|
1249 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
|
1250 } |
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
|
1251 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
|
1252 |
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 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
|
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 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
|
1256 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
|
1257 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
|
1258 } |
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 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
|
1260 return; |
503
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1261 } |
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
|
1262 |
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 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
|
1264 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
|
1265 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
|
1266 render_sprite_cells(context); |
503
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
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1267 context->sprite_index = 0x80; |
eee6be465c47
Small optimization for H40 mode
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parents:
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diff
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|
1268 context->slot_counter = MAX_SPRITES_LINE; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1269 for (int i = 0; i < 19; i++) |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
1270 { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
1271 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
1272 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1273 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1274 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1275 for (int i = 0; i < 11; i++) |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1276 { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
1277 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1278 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1279 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1280 uint16_t address; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1281 uint32_t mask; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1282 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1283 mask = 0; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1284 if (context->regs[REG_MODE_3] & 0x2) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1285 mask |= 0xF8; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1286 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1287 if (context->regs[REG_MODE_3] & 0x1) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1288 mask |= 0x7; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1289 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1290 address += (line & mask) * 4; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1291 context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1]; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1292 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3]; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1293 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1294 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1295 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1296 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1297 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1298 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1299 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1300 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1301 |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1302 read_map_scroll_a(0, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1303 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1304 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1305 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1306 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1307 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1308 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1309 read_map_scroll_b(0, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1310 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1311 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1312 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1313 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1314 render_map_output(line, 0, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1315 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1316 //reverse context slot counter so it counts the number of sprite slots |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1317 //filled rather than the number of available slots |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1318 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1319 context->cur_slot = MAX_SPRITES_LINE-1; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1320 context->sprite_draws = MAX_DRAWS; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1321 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1322 for (int column = 2; column < 42; column += 2) |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1323 { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1324 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1325 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1326 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1327 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1328 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1329 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1330 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1331 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1332 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1333 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1334 render_map_output(line, column, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1335 |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1336 column += 2; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1337 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1338 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1339 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1340 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1341 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1342 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1343 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1344 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1345 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1346 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1347 render_map_output(line, column, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1348 |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1349 column += 2; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1350 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1351 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1352 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1353 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1354 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1355 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1356 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1357 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1358 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1359 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1360 render_map_output(line, column, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1361 |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1362 column += 2; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
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 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1365 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1366 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1367 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1368 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1369 render_map_output(line, column, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1370 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1371 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1372 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1373 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1374 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1375 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1376 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1377 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1378 void latch_mode(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1379 { |
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
|
1380 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
|
1381 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1382 |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1383 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
|
1384 { |
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
|
1385 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
|
1386 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
|
1387 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
|
1388 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
|
1389 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
|
1390 } |
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
|
1391 } 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
|
1392 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
|
1393 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
|
1394 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
|
1395 } |
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
|
1396 } |
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
|
1397 if (starti >= 0) { |
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
|
1398 if (context->b32) { |
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
|
1399 uint32_t color = context->colors[context->regs[REG_BG_COLOR]]; |
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
|
1400 uint32_t * start = context->framebuf; |
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
|
1401 start += starti; |
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
|
1402 for (int i = 0; i < 2; i++) { |
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
|
1403 *(start++) = color; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1404 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1405 } 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
|
1406 uint16_t color = context->colors[context->regs[REG_BG_COLOR]]; |
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
|
1407 uint16_t * start = context->framebuf; |
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
|
1408 start += starti; |
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
|
1409 for (int i = 0; i < 2; i++) { |
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
|
1410 *(start++) = color; |
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
|
1411 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1412 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1413 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1414 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1415 |
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
|
1416 uint32_t h40_hsync_cycles[] = {19, 20, 20, 20, 18, 20, 20, 20, 18, 20, 20, 20, 18, 20, 20, 20, 19}; |
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:
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diff
changeset
|
1417 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1418 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
|
1419 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1420 while(context->cycles < target_cycles) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1421 { |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1422 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
|
1423 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
|
1424 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START; |
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 uint32_t slot = 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
|
1426 //TODO: Figure out when this actually happens |
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 if (!line && !slot) { |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1428 latch_mode(context); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1429 } |
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
|
1430 uint8_t is_h40 = 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
|
1431 if (is_h40 && slot == 167 || !is_h40 && slot == 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
|
1432 if (line >= inactive_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
|
1433 context->hint_counter = context->regs[REG_HINT]; |
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
|
1434 } else if (context->hint_counter) { |
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
|
1435 context->hint_counter--; |
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
|
1436 } else { |
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
|
1437 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
|
1438 context->hint_counter = context->regs[REG_HINT]; |
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
|
1439 } |
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
|
1440 } else if(line == inactive_start) { |
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
|
1441 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
|
1442 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
|
1443 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
|
1444 } |
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
|
1445 } |
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
|
1446 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
|
1447 //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
|
1448 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
|
1449 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
|
1450 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
|
1451 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
|
1452 } 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
|
1453 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
|
1454 } |
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
|
1455 //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
|
1456 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
|
1457 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
|
1458 } |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1459 } else { |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1460 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
|
1461 //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
|
1462 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
|
1463 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
|
1464 } |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1465 } |
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
|
1466 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
|
1467 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
|
1468 //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
|
1469 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
|
1470 if (slot == 167 && 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
|
1471 vdp_h40_line(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1472 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
|
1473 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
|
1474 inc_slot = 0; |
503
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1475 } else { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1476 vdp_h40(line, slot, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1477 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1478 } else { |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1479 vdp_h32(line, slot, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1480 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1481 } else { |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1482 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
|
1483 external_slot(context); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1484 } |
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
|
1485 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
|
1486 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
|
1487 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1488 } |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1489 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
|
1490 run_dma_src(context, slot); |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1491 } |
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
|
1492 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
|
1493 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
|
1494 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
|
1495 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
|
1496 if (context->hslot == 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
|
1497 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
|
1498 } 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
|
1499 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
|
1500 } |
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
|
1501 } 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
|
1502 if (context->hslot == 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
|
1503 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
|
1504 } 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
|
1505 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
|
1506 } |
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
|
1507 } |
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
|
1508 |
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 } |
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 if (context->vcounter == 0xEA) { |
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 context->vcounter += 0xFA; |
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 } 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
|
1513 context->vcounter &= 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
|
1514 } |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1515 context->cycles += inccycles; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1516 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1517 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1518 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1519 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
|
1520 { |
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
|
1521 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
|
1522 vdp_run_context(context, target_cycles); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1523 return context->cycles; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1524 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1525 |
75 | 1526 void vdp_run_dma_done(vdp_context * context, uint32_t target_cycles) |
1527 { | |
1528 for(;;) { | |
1529 uint32_t dmalen = (context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L]; | |
1530 if (!dmalen) { | |
1531 dmalen = 0x10000; | |
1532 } | |
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
|
1533 uint32_t min_dma_complete = dmalen * (context->regs[REG_MODE_4] & BIT_H40 ? 16 : 20); |
75 | 1534 if ((context->regs[REG_DMASRC_H] & 0xC0) == 0xC0 || (context->cd & 0xF) == VRAM_WRITE) { |
1535 //DMA copies take twice as long to complete since they require a read and a write | |
1536 //DMA Fills and transfers to VRAM also take twice as long as it requires 2 writes for a single word | |
1537 min_dma_complete *= 2; | |
1538 } | |
1539 min_dma_complete += context->cycles; | |
1540 if (target_cycles < min_dma_complete) { | |
1541 vdp_run_context(context, target_cycles); | |
1542 return; | |
1543 } else { | |
1544 vdp_run_context(context, min_dma_complete); | |
1545 if (!(context->flags & FLAG_DMA_RUN)) { | |
1546 return; | |
1547 } | |
1548 } | |
1549 } | |
1550 } | |
1551 | |
1552 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
|
1553 { |
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
|
1554 //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
|
1555 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
|
1556 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
|
1557 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1558 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
|
1559 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
|
1560 context->cd = (context->cd & 0x3) | ((value >> 2) & 0x3C); |
75 | 1561 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
|
1562 //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
|
1563 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
|
1564 // |
75 | 1565 if((context->regs[REG_DMASRC_H] & 0xC0) != 0x80) { |
1566 //DMA copy or 68K -> VDP, transfer starts immediately | |
1567 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
|
1568 context->dma_cd = context->cd; |
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
|
1569 //printf("DMA start at cycle %d\n", context->cycles); |
75 | 1570 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
|
1571 //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 | 1572 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
|
1573 } else { |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1574 //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 | 1575 } |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1576 } 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
|
1577 //printf("DMA Fill Address: %X, New CD: %X\n", context->address, context->cd); |
75 | 1578 } |
63
a6dd5b7a971b
Add FPS counter to console output
Mike Pavone <pavone@retrodev.com>
parents:
58
diff
changeset
|
1579 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1580 } else { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1581 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
|
1582 //Register write |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1583 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
|
1584 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
|
1585 //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
|
1586 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
|
1587 context->hv_latch = vdp_hv_counter_read(context); |
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1588 } |
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
|
1589 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
|
1590 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
|
1591 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1592 context->regs[reg] = value; |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1593 if (reg == REG_MODE_4) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1594 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
|
1595 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
|
1596 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
|
1597 } |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1598 } |
476
5d7bc113653b
Clear the low 2 bits of CD when a register is written to
Mike Pavone <pavone@retrodev.com>
parents:
475
diff
changeset
|
1599 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
|
1600 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1601 } else { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1602 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
|
1603 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
|
1604 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
|
1605 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1606 } |
75 | 1607 return 0; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1608 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1609 |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1610 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
|
1611 { |
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
|
1612 //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
|
1613 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
|
1614 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
|
1615 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1616 context->flags &= ~FLAG_PENDING; |
109
004dd46e0a97
COmment out fifo full debug printf
Mike Pavone <pavone@retrodev.com>
parents:
108
diff
changeset
|
1617 /*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
|
1618 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
|
1619 }*/ |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1620 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
|
1621 context->flags &= ~FLAG_DMA_RUN; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1622 } |
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
|
1623 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
|
1624 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
|
1625 } |
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
|
1626 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
|
1627 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
|
1628 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
|
1629 cur->value = value; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1630 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
|
1631 context->flags |= FLAG_DMA_RUN; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1632 } |
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
|
1633 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
|
1634 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
|
1635 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
|
1636 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
|
1637 } |
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
|
1638 context->fifo_write = (context->fifo_write + 1) & (FIFO_SIZE-1); |
138 | 1639 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
|
1640 return 0; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1641 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1642 |
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
|
1643 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
|
1644 { |
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
|
1645 //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
|
1646 } |
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
|
1647 |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1648 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
|
1649 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1650 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
|
1651 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
|
1652 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
|
1653 value |= 0x200; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1654 } |
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
|
1655 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
|
1656 value |= 0x100; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1657 } |
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
|
1658 if (context->flags2 & FLAG2_VINT_PENDING) { |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1659 value |= 0x80; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1660 } |
494
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1661 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
|
1662 value |= 0x40; |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1663 } |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1664 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
|
1665 value |= 0x20; |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1666 //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
|
1667 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
|
1668 } |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1669 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
|
1670 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
|
1671 } |
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
|
1672 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
|
1673 uint32_t slot = 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
|
1674 if (line >= (context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START) || !(context->regs[REG_MODE_2] & BIT_DISP_EN)) { |
318
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1675 value |= 0x8; |
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1676 } |
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
|
1677 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
|
1678 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
|
1679 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
|
1680 } |
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
|
1681 } 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
|
1682 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
|
1683 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
|
1684 } |
318
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1685 } |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1686 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
|
1687 value |= 0x2; |
75 | 1688 } |
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
|
1689 if (context->latched_mode & BIT_PAL) {//Not sure about this, need to verify |
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
|
1690 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
|
1691 } |
459
c49ecf575784
Revert change to VBLANK flag timing based on new direct color DMA test
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1692 //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
|
1693 return value; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1694 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1695 |
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
|
1696 #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
|
1697 #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
|
1698 #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
|
1699 |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1700 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
|
1701 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1702 context->flags &= ~FLAG_PENDING; |
138 | 1703 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
|
1704 return 0; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1705 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1706 //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
|
1707 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
|
1708 //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
|
1709 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
|
1710 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
|
1711 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1712 uint16_t value = 0; |
138 | 1713 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
|
1714 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1715 case VRAM_READ: |
472 | 1716 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
|
1717 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
|
1718 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
|
1719 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
|
1720 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
|
1721 } |
472 | 1722 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
|
1723 break; |
473
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1724 case VRAM_READ8: |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1725 value = context->vdpmem[context->address ^ 1]; |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1726 value |= context->fifo[context->fifo_write].value & 0xFF00; |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1727 break; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1728 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
|
1729 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
|
1730 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
|
1731 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
|
1732 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
|
1733 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
|
1734 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
|
1735 address = 0; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1736 } |
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
|
1737 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
|
1738 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
|
1739 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
|
1740 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1741 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1742 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
|
1743 return value; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1744 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1745 |
137 | 1746 uint16_t vdp_hv_counter_read(vdp_context * context) |
1747 { | |
480
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1748 if (context->regs[REG_MODE_1] & BIT_HVC_LATCH) { |
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1749 return context->hv_latch; |
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1750 } |
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
|
1751 uint32_t line= context->vcounter & 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
|
1752 uint32_t linecyc = (context->hslot * 2) & 0xFF; |
137 | 1753 linecyc &= 0xFF; |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1754 if (context->double_res) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1755 line <<= 1; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1756 if (line & 0x100) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1757 line |= 1; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1758 } |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1759 } |
137 | 1760 return (line << 8) | linecyc; |
1761 } | |
1762 | |
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
|
1763 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
|
1764 { |
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
|
1765 //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
|
1766 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
|
1767 } |
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
|
1768 |
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
|
1769 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
|
1770 { |
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
|
1771 context->cycles -= deduction; |
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
|
1772 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
|
1773 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
|
1774 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
|
1775 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
|
1776 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
|
1777 } 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
|
1778 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
|
1779 } |
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
|
1780 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
|
1781 } 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
|
1782 } |
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
|
1783 } |
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
|
1784 |
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
|
1785 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
|
1786 { |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1787 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
|
1788 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
|
1789 } |
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
|
1790 if (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
|
1791 return context->cycles; |
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
|
1792 } |
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
|
1793 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_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
|
1794 uint32_t line = context->cycles / 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
|
1795 if (line >= inactive_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
|
1796 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
|
1797 } |
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
|
1798 uint32_t linecyc = context->cycles % MCLKS_LINE; |
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
|
1799 uint32_t hcycle = context->cycles + context->hint_counter * MCLKS_LINE + MCLKS_LINE - linecyc; |
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
|
1800 return hcycle; |
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
|
1801 } |
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
|
1802 |
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
|
1803 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
|
1804 { |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1805 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
|
1806 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
|
1807 } |
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
|
1808 if (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
|
1809 return context->cycles; |
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
|
1810 } |
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
|
1811 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START; |
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
|
1812 uint32_t vcycle = MCLKS_LINE * inactive_start; |
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
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|
1813 if (context->regs[REG_MODE_4] & BIT_H40) { |
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1814 vcycle += VINT_SLOT_H40 * MCLKS_SLOT_H40; |
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1815 } else { |
622
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1816 vcycle += VINT_SLOT_H32 * MCLKS_SLOT_H32; |
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1817 } |
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1818 if (vcycle < context->cycles) { |
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1819 return 0xFFFFFFFF; |
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1820 } |
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1821 return vcycle; |
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1822 } |
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1823 |
333 | 1824 uint32_t vdp_next_vint_z80(vdp_context * context) |
1825 { | |
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1826 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START; |
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1827 uint32_t vcycle = MCLKS_LINE * inactive_start; |
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1828 if (context->regs[REG_MODE_4] & BIT_H40) { |
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1829 vcycle += VINT_SLOT_H40 * MCLKS_SLOT_H40; |
333 | 1830 } else { |
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1831 vcycle += VINT_SLOT_H32 * MCLKS_SLOT_H32; |
333 | 1832 } |
1833 return vcycle; | |
1834 } | |
1835 | |
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1836 void vdp_int_ack(vdp_context * context, uint16_t int_num) |
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1837 { |
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1838 if (int_num == 6) { |
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1839 context->flags2 &= ~FLAG2_VINT_PENDING; |
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1840 } else if(int_num ==4) { |
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1841 context->flags2 &= ~FLAG2_HINT_PENDING; |
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1842 } |
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1843 } |
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1844 |