Mercurial > repos > blastem
annotate vdp.c @ 604:39d7d463ed5b
Get Z80 banked access sort of working again
author | Michael Pavone <pavone@retrodev.com> |
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date | Fri, 26 Dec 2014 19:37:59 -0800 |
parents | 1495179d6737 |
children | 5196333b37a6 |
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 |
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12 #define NTSC_ACTIVE 225 |
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13 #define PAL_ACTIVE 241 |
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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_CYCLE_H40 (21*MCLKS_SLOT_H40+332+9*MCLKS_SLOT_H40) //21 slots before HSYNC, 16 during, 10 after |
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26 #define VINT_CYCLE_H32 ((33+20+7)*MCLKS_SLOT_H32) //33 slots before HSYNC, 20 during, 7 after TODO: confirm final number |
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27 #define HSYNC_SLOT_H40 21 |
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28 #define MCLK_WEIRD_END (HSYNC_SLOT_H40*MCLKS_SLOT_H40 + 332) |
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29 #define SLOT_WEIRD_END (HSYNC_SLOT_H40+17) |
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30 #define HSYNC_END_H32 (33 * MCLKS_SLOT_H32) |
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31 #define HBLANK_CLEAR_H40 (MCLK_WEIRD_END+61*4) |
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32 #define HBLANK_CLEAR_H32 (HSYNC_END_H32 + 46*5) |
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33 #define FIFO_LATENCY 3 |
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34 |
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35 int32_t color_map[1 << 12]; |
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36 uint8_t levels[] = {0, 27, 49, 71, 87, 103, 119, 130, 146, 157, 174, 190, 206, 228, 255}; |
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37 |
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38 uint8_t debug_base[][3] = { |
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39 {127, 127, 127}, //BG |
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40 {0, 0, 127}, //A |
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41 {127, 0, 0}, //Window |
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42 {0, 127, 0}, //B |
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43 {127, 0, 127} //Sprites |
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44 }; |
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45 |
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46 uint8_t color_map_init_done; |
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47 |
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48 void init_vdp_context(vdp_context * context) |
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49 { |
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50 memset(context, 0, sizeof(*context)); |
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51 context->vdpmem = malloc(VRAM_SIZE); |
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52 memset(context->vdpmem, 0, VRAM_SIZE); |
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53 /* |
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54 */ |
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55 if (headless) { |
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56 context->oddbuf = context->framebuf = malloc(FRAMEBUF_ENTRIES * (32 / 8)); |
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57 memset(context->framebuf, 0, FRAMEBUF_ENTRIES * (32 / 8)); |
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58 context->evenbuf = malloc(FRAMEBUF_ENTRIES * (32 / 8)); |
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59 memset(context->evenbuf, 0, FRAMEBUF_ENTRIES * (32 / 8)); |
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60 context->b32 = 1; |
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61 } else { |
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62 render_alloc_surfaces(context); |
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63 context->b32 = render_depth() == 32; |
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64 } |
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65 context->framebuf = context->oddbuf; |
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66 context->linebuf = malloc(LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2); |
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67 memset(context->linebuf, 0, LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2); |
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68 context->tmp_buf_a = context->linebuf + LINEBUF_SIZE; |
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69 context->tmp_buf_b = context->tmp_buf_a + SCROLL_BUFFER_SIZE; |
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70 context->sprite_draws = MAX_DRAWS; |
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71 context->fifo_write = 0; |
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72 context->fifo_read = -1; |
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73 |
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74 if (!color_map_init_done) { |
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75 uint8_t b,g,r; |
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76 for (uint16_t color = 0; color < (1 << 12); color++) { |
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77 if (color & FBUF_SHADOW) { |
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78 b = levels[(color >> 9) & 0x7]; |
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79 g = levels[(color >> 5) & 0x7]; |
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80 r = levels[(color >> 1) & 0x7]; |
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81 } else if(color & FBUF_HILIGHT) { |
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82 b = levels[((color >> 9) & 0x7) + 7]; |
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83 g = levels[((color >> 5) & 0x7) + 7]; |
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84 r = levels[((color >> 1) & 0x7) + 7]; |
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85 } else { |
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86 b = levels[(color >> 8) & 0xE]; |
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87 g = levels[(color >> 4) & 0xE]; |
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88 r = levels[color & 0xE]; |
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89 } |
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90 color_map[color] = render_map_color(r, g, b); |
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91 } |
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92 color_map_init_done = 1; |
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93 } |
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94 for (uint8_t color = 0; color < (1 << (3 + 1 + 1 + 1)); color++) |
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95 { |
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96 uint8_t src = color & DBG_SRC_MASK; |
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97 if (src > DBG_SRC_S) { |
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98 context->debugcolors[color] = 0; |
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99 } else { |
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100 uint8_t r,g,b; |
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101 b = debug_base[src][0]; |
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102 g = debug_base[src][1]; |
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103 r = debug_base[src][2]; |
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104 if (color & DBG_PRIORITY) |
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105 { |
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106 if (b) { |
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107 b += 48; |
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108 } |
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109 if (g) { |
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110 g += 48; |
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111 } |
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112 if (r) { |
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113 r += 48; |
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114 } |
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115 } |
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116 if (color & DBG_SHADOW) { |
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117 b /= 2; |
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118 g /= 2; |
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119 r /=2 ; |
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120 } |
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121 if (color & DBG_HILIGHT) { |
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122 if (b) { |
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123 b += 72; |
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124 } |
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125 if (g) { |
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126 g += 72; |
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127 } |
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128 if (r) { |
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129 r += 72; |
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130 } |
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131 } |
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132 context->debugcolors[color] = render_map_color(r, g, b); |
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133 } |
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134 } |
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135 } |
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136 |
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137 int is_refresh(vdp_context * context, uint32_t slot) |
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138 { |
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139 if (context->latched_mode & BIT_H40) { |
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140 return (slot == 37 || slot == 69 || slot == 102 || slot == 133 || slot == 165 || slot == 197 || slot >= 210); |
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141 } else { |
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142 //TODO: Figure out which slots are refresh when display is off in 32-cell mode |
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143 //These numbers are guesses based on H40 numbers |
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144 return (slot == 24 || slot == 56 || slot == 88 || slot == 120 || slot == 152); |
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145 //The numbers below are the refresh slots during active display |
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146 //return (slot == 66 || slot == 98 || slot == 130 || slot == 162); |
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147 } |
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148 } |
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149 |
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150 void render_sprite_cells(vdp_context * context) |
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151 { |
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152 if (context->cur_slot >= context->sprite_draws) { |
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153 sprite_draw * d = context->sprite_draw_list + context->cur_slot; |
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154 |
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155 uint16_t dir; |
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156 int16_t x; |
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157 if (d->h_flip) { |
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158 x = d->x_pos + 7; |
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159 dir = -1; |
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160 } else { |
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161 x = d->x_pos; |
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162 dir = 1; |
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163 } |
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164 //printf("Draw Slot %d of %d, Rendering sprite cell from %X to x: %d\n", context->cur_slot, context->sprite_draws, d->address, x); |
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165 context->cur_slot--; |
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166 for (uint16_t address = d->address; address != ((d->address+4) & 0xFFFF); address++) { |
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167 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) { |
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168 if (context->linebuf[x] && (context->vdpmem[address] >> 4)) { |
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169 context->flags2 |= FLAG2_SPRITE_COLLIDE; |
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170 } |
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171 context->linebuf[x] = (context->vdpmem[address] >> 4) | d->pal_priority; |
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172 } |
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173 x += dir; |
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174 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) { |
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175 if (context->linebuf[x] && (context->vdpmem[address] & 0xF)) { |
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176 context->flags2 |= FLAG2_SPRITE_COLLIDE; |
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177 } |
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178 context->linebuf[x] = (context->vdpmem[address] & 0xF) | d->pal_priority; |
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179 } |
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180 x += dir; |
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181 } |
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182 } |
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183 } |
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184 |
322
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185 void vdp_print_sprite_table(vdp_context * context) |
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186 { |
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187 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9; |
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188 uint16_t current_index = 0; |
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189 uint8_t count = 0; |
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190 do { |
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191 uint16_t address = current_index * 8 + sat_address; |
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192 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * 8; |
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193 uint8_t width = (((context->vdpmem[address+2] >> 2) & 0x3) + 1) * 8; |
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194 int16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & 0x1FF; |
323
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195 int16_t x = ((context->vdpmem[address+ 6] & 0x3) << 8 | context->vdpmem[address + 7]) & 0x1FF; |
322
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196 uint16_t link = context->vdpmem[address+3] & 0x7F; |
323
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197 uint8_t pal = context->vdpmem[address + 4] >> 5 & 0x3; |
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198 uint8_t pri = context->vdpmem[address + 4] >> 7; |
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199 uint16_t pattern = ((context->vdpmem[address + 4] << 8 | context->vdpmem[address + 5]) & 0x7FF) << 5; |
515
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200 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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201 current_index = link; |
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202 count++; |
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203 } while (current_index != 0 && count < 80); |
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204 } |
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205 |
327
1b00258b1f29
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206 void vdp_print_reg_explain(vdp_context * context) |
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207 { |
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208 char * hscroll[] = {"full", "7-line", "cell", "line"}; |
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209 printf("**Mode Group**\n" |
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210 "00: %.2X | H-ints %s, Pal Select %d, HVC latch %s, Display gen %s\n" |
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211 "01: %.2X | Display %s, V-ints %s, Height: %d, Mode %d\n" |
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212 "0B: %.2X | E-ints %s, V-Scroll: %s, H-Scroll: %s\n" |
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213 "0C: %.2X | Width: %d, Shadow/Highlight: %s\n", |
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214 context->regs[REG_MODE_1], context->regs[REG_MODE_1] & BIT_HINT_EN ? "enabled" : "disabled", context->regs[REG_MODE_1] & BIT_PAL_SEL != 0, |
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215 context->regs[REG_MODE_1] & BIT_HVC_LATCH ? "enabled" : "disabled", context->regs[REG_MODE_1] & BIT_DISP_DIS ? "disabled" : "enabled", |
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216 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", |
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217 context->regs[REG_MODE_2] & BIT_PAL ? 30 : 28, context->regs[REG_MODE_2] & BIT_MODE_5 ? 5 : 4, |
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218 context->regs[REG_MODE_3], context->regs[REG_MODE_3] & BIT_EINT_EN ? "enabled" : "disabled", context->regs[REG_MODE_3] & BIT_VSCROLL ? "2 cell" : "full", |
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219 hscroll[context->regs[REG_MODE_3] & 0x3], |
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220 context->regs[REG_MODE_4], context->regs[REG_MODE_4] & BIT_H40 ? 40 : 32, context->regs[REG_MODE_4] & BIT_HILIGHT ? "enabled" : "disabled"); |
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221 printf("\n**Table Group**\n" |
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222 "02: %.2X | Scroll A Name Table: $%.4X\n" |
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223 "03: %.2X | Window Name Table: $%.4X\n" |
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224 "04: %.2X | Scroll B Name Table: $%.4X\n" |
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225 "05: %.2X | Sprite Attribute Table: $%.4X\n" |
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226 "0D: %.2X | HScroll Data Table: $%.4X\n", |
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227 context->regs[REG_SCROLL_A], (context->regs[REG_SCROLL_A] & 0x38) << 10, |
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228 context->regs[REG_WINDOW], (context->regs[REG_WINDOW] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x3C : 0x3E)) << 10, |
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229 context->regs[REG_SCROLL_B], (context->regs[REG_SCROLL_B] & 0x7) << 13, |
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230 context->regs[REG_SAT], (context->regs[REG_SAT] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x3E : 0x3F)) << 9, |
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231 context->regs[REG_HSCROLL], (context->regs[REG_HSCROLL] & 0x1F) << 10); |
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232 char * sizes[] = {"32", "64", "invalid", "128"}; |
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233 printf("\n**Misc Group**\n" |
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234 "07: %.2X | Backdrop Color: $%X\n" |
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235 "0A: %.2X | H-Int Counter: %u\n" |
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236 "0F: %.2X | Auto-increment: $%X\n" |
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237 "10: %.2X | Scroll A/B Size: %sx%s\n", |
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The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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238 context->regs[REG_BG_COLOR], context->regs[REG_BG_COLOR], |
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239 context->regs[REG_HINT], context->regs[REG_HINT], |
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240 context->regs[REG_AUTOINC], context->regs[REG_AUTOINC], |
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241 context->regs[REG_SCROLL], sizes[context->regs[REG_SCROLL] & 0x3], sizes[context->regs[REG_SCROLL] >> 4 & 0x3]); |
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242 printf("\n**Internal Group**\n" |
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243 "Address: %X\n" |
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244 "CD: %X\n" |
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245 "Pending: %s\n", |
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246 context->address, context->cd, (context->flags & FLAG_PENDING) ? "true" : "false"); |
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247 |
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248 //TODO: Window Group, DMA Group |
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249 } |
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250 |
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251 void scan_sprite_table(uint32_t line, vdp_context * context) |
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252 { |
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253 if (context->sprite_index && context->slot_counter) { |
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254 line += 1; |
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255 line &= 0xFF; |
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256 uint16_t ymask, ymin; |
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257 uint8_t height_mult; |
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258 if (context->double_res) { |
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259 line *= 2; |
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260 if (context->framebuf != context->oddbuf) { |
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261 line++; |
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262 } |
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263 ymask = 0x3FF; |
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264 ymin = 256; |
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265 height_mult = 16; |
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266 } else { |
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267 ymask = 0x1FF; |
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268 ymin = 128; |
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269 height_mult = 8; |
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270 } |
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271 context->sprite_index &= 0x7F; |
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272 if (context->latched_mode & BIT_H40) { |
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273 if (context->sprite_index >= MAX_SPRITES_FRAME) { |
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274 context->sprite_index = 0; |
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275 return; |
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276 } |
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277 } else if(context->sprite_index >= MAX_SPRITES_FRAME_H32) { |
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278 context->sprite_index = 0; |
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279 return; |
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280 } |
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281 //TODO: Read from SAT cache rather than from VRAM |
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282 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9; |
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283 uint16_t address = context->sprite_index * 8 + sat_address; |
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284 line += ymin; |
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285 uint16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & ymask; |
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286 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * height_mult; |
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287 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height); |
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288 if (y <= line && line < (y + height)) { |
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289 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line); |
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290 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2]; |
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291 context->sprite_info_list[context->slot_counter].index = context->sprite_index; |
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292 context->sprite_info_list[context->slot_counter].y = y-ymin; |
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293 } |
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294 context->sprite_index = context->vdpmem[address+3] & 0x7F; |
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295 if (context->sprite_index && context->slot_counter) |
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296 { |
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297 address = context->sprite_index * 8 + sat_address; |
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298 y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & ymask; |
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299 height = ((context->vdpmem[address+2] & 0x3) + 1) * height_mult; |
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300 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height); |
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301 if (y <= line && line < (y + height)) { |
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302 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line); |
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303 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2]; |
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304 context->sprite_info_list[context->slot_counter].index = context->sprite_index; |
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305 context->sprite_info_list[context->slot_counter].y = y-ymin; |
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306 } |
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307 context->sprite_index = context->vdpmem[address+3] & 0x7F; |
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308 } |
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309 } |
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310 } |
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311 |
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312 void read_sprite_x(uint32_t line, vdp_context * context) |
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313 { |
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314 if (context->cur_slot >= context->slot_counter) { |
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315 if (context->sprite_draws) { |
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316 line += 1; |
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317 line &= 0xFF; |
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318 //in tiles |
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319 uint8_t width = ((context->sprite_info_list[context->cur_slot].size >> 2) & 0x3) + 1; |
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320 //in pixels |
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321 uint8_t height = ((context->sprite_info_list[context->cur_slot].size & 0x3) + 1) * 8; |
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322 if (context->double_res) { |
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323 line *= 2; |
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324 if (context->framebuf != context->oddbuf) { |
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325 line++; |
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326 } |
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327 height *= 2; |
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328 } |
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329 uint16_t att_addr = ((context->regs[REG_SAT] & 0x7F) << 9) + context->sprite_info_list[context->cur_slot].index * 8 + 4; |
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330 uint16_t tileinfo = (context->vdpmem[att_addr] << 8) | context->vdpmem[att_addr+1]; |
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331 uint8_t pal_priority = (tileinfo >> 9) & 0x70; |
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332 uint8_t row; |
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333 if (tileinfo & MAP_BIT_V_FLIP) { |
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334 row = (context->sprite_info_list[context->cur_slot].y + height - 1) - line; |
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335 } else { |
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336 row = line-context->sprite_info_list[context->cur_slot].y; |
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337 } |
413
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338 uint16_t address; |
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339 if (context->double_res) { |
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340 address = ((tileinfo & 0x3FF) << 6) + row * 4; |
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341 } else { |
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342 address = ((tileinfo & 0x7FF) << 5) + row * 4; |
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343 } |
323
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344 int16_t x = ((context->vdpmem[att_addr+ 2] & 0x3) << 8 | context->vdpmem[att_addr + 3]) & 0x1FF; |
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345 if (x) { |
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346 context->flags |= FLAG_CAN_MASK; |
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347 } else if(context->flags & (FLAG_CAN_MASK | FLAG_DOT_OFLOW)) { |
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348 context->flags |= FLAG_MASKED; |
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349 } |
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350 |
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351 context->flags &= ~FLAG_DOT_OFLOW; |
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352 int16_t i; |
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353 if (context->flags & FLAG_MASKED) { |
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354 for (i=0; i < width && context->sprite_draws; i++) { |
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355 --context->sprite_draws; |
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356 context->sprite_draw_list[context->sprite_draws].x_pos = -128; |
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357 } |
36
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358 } else { |
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359 x -= 128; |
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360 int16_t base_x = x; |
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361 int16_t dir; |
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362 if (tileinfo & MAP_BIT_H_FLIP) { |
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363 x += (width-1) * 8; |
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364 dir = -8; |
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365 } else { |
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366 dir = 8; |
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367 } |
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368 //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); |
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369 for (i=0; i < width && context->sprite_draws; i++, x += dir) { |
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370 --context->sprite_draws; |
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371 context->sprite_draw_list[context->sprite_draws].address = address + i * height * 4; |
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372 context->sprite_draw_list[context->sprite_draws].x_pos = x; |
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373 context->sprite_draw_list[context->sprite_draws].pal_priority = pal_priority; |
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374 context->sprite_draw_list[context->sprite_draws].h_flip = (tileinfo & MAP_BIT_H_FLIP) ? 1 : 0; |
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375 } |
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376 } |
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377 if (i < width) { |
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378 context->flags |= FLAG_DOT_OFLOW; |
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379 } |
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380 context->cur_slot--; |
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381 } else { |
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382 context->flags |= FLAG_DOT_OFLOW; |
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383 } |
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384 } |
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385 } |
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386 |
427
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387 void write_cram(vdp_context * context, uint16_t address, uint16_t value) |
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388 { |
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389 uint16_t addr = (address/2) & (CRAM_SIZE-1); |
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390 context->cram[addr] = value; |
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391 context->colors[addr] = color_map[value & 0xEEE]; |
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392 context->colors[addr + CRAM_SIZE] = color_map[(value & 0xEEE) | FBUF_SHADOW]; |
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393 context->colors[addr + CRAM_SIZE*2] = color_map[(value & 0xEEE) | FBUF_HILIGHT]; |
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394 } |
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395 |
473
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396 #define VRAM_READ 0 //0000 |
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397 #define VRAM_WRITE 1 //0001 |
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398 //2 would trigger register write 0010 |
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399 #define CRAM_WRITE 3 //0011 |
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400 #define VSRAM_READ 4 //0100 |
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401 #define VSRAM_WRITE 5//0101 |
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402 //6 would trigger regsiter write 0110 |
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403 //7 is a mystery |
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404 #define CRAM_READ 8 //1000 |
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405 //9 is also a mystery //1001 |
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406 //A would trigger register write 1010 |
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407 //B is a mystery 1011 |
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408 #define VRAM_READ8 0xC //1100 |
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409 //D is a mystery 1101 |
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410 //E would trigger register write 1110 |
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411 //F is a mystery 1111 |
75 | 412 #define DMA_START 0x20 |
54
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413 |
20
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414 void external_slot(vdp_context * context) |
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415 { |
471
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416 fifo_entry * start = context->fifo + context->fifo_read; |
474
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417 /*if (context->flags2 & FLAG2_READ_PENDING) { |
470
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418 context->flags2 &= ~FLAG2_READ_PENDING; |
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419 context->flags |= FLAG_UNUSED_SLOT; |
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420 return; |
474
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421 }*/ |
471
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422 if (context->fifo_read >= 0 && start->cycle <= context->cycles) { |
460
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diff
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423 switch (start->cd & 0xF) |
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|
424 { |
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|
425 case VRAM_WRITE: |
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|
426 if (start->partial) { |
471
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changeset
|
427 //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
|
428 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
|
429 } 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
|
430 //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
|
431 context->vdpmem[start->address] = start->value >> 8; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
432 start->partial = 1; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
433 //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
|
434 return; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
435 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
436 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
437 case CRAM_WRITE: { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
438 //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
|
439 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
|
440 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
441 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
442 case VSRAM_WRITE: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
443 if (((start->address/2) & 63) < VSRAM_SIZE) { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
444 //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
|
445 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
|
446 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
447 |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
448 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
449 } |
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
|
450 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
|
451 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
|
452 context->fifo_read = -1; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
453 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
454 } else { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
455 context->flags |= FLAG_UNUSED_SLOT; |
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 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
458 |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
459 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
|
460 { |
75 | 461 //TODO: Figure out what happens if CD bit 4 is not set in DMA copy mode |
462 //TODO: Figure out what happens when CD:0-3 is not set to a write mode in DMA operations | |
463 //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
|
464 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
|
465 return; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
466 } |
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
|
467 fifo_entry * cur = NULL; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
468 switch(context->regs[REG_DMASRC_H] & 0xC0) |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
469 { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
470 //68K -> VDP |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
471 case 0: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
472 case 0x40: |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
473 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
|
474 cur = context->fifo + 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
|
475 cur->cycle = context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20)*FIFO_LATENCY; |
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
|
476 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
|
477 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
|
478 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
|
479 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
|
480 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
|
481 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
|
482 } |
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
|
483 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
|
484 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
485 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
486 //Copy |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
487 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
|
488 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
|
489 //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
|
490 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
|
491 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
|
492 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
|
493 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
|
494 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
|
495 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
|
496 cur->cd = VRAM_WRITE; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
497 context->flags &= ~FLAG_UNUSED_SLOT; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
498 } |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
499 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
500 case 0x80: |
478
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
501 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
|
502 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
|
503 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
|
504 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
|
505 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
|
506 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
|
507 } |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
508 break; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
509 } |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
510 |
478
2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
Mike Pavone <pavone@retrodev.com>
parents:
477
diff
changeset
|
511 if (cur) { |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
512 context->regs[REG_DMASRC_L] += 1; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
513 if (!context->regs[REG_DMASRC_L]) { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
514 context->regs[REG_DMASRC_M] += 1; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
515 } |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
516 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
|
517 uint16_t dma_len = ((context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L]) - 1; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
518 context->regs[REG_DMALEN_H] = dma_len >> 8; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
519 context->regs[REG_DMALEN_L] = dma_len; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
520 if (!dma_len) { |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
521 //printf("DMA end at cycle %d\n", context->cycles); |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
522 context->flags &= ~FLAG_DMA_RUN; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
523 context->cd &= 0xF; |
75 | 524 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
525 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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526 } |
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527 |
40 | 528 #define WINDOW_RIGHT 0x80 |
529 #define WINDOW_DOWN 0x80 | |
530 | |
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531 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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532 { |
417
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533 uint16_t window_line_shift, v_offset_mask, vscroll_shift; |
414
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534 if (context->double_res) { |
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535 line *= 2; |
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536 if (context->framebuf != context->oddbuf) { |
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537 line++; |
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538 } |
417
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539 window_line_shift = 4; |
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540 v_offset_mask = 0xF; |
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541 vscroll_shift = 4; |
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542 } else { |
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543 window_line_shift = 3; |
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544 v_offset_mask = 0x7; |
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545 vscroll_shift = 3; |
414
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546 } |
40 | 547 if (!vsram_off) { |
548 uint16_t left_col, right_col; | |
549 if (context->regs[REG_WINDOW_H] & WINDOW_RIGHT) { | |
41
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550 left_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2; |
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551 right_col = 42; |
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552 } else { |
40 | 553 left_col = 0; |
554 right_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2; | |
555 if (right_col) { | |
556 right_col += 2; | |
557 } | |
558 } | |
41
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559 uint16_t top_line, bottom_line; |
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560 if (context->regs[REG_WINDOW_V] & WINDOW_DOWN) { |
417
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561 top_line = (context->regs[REG_WINDOW_V] & 0x1F) << window_line_shift; |
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562 bottom_line = context->double_res ? 481 : 241; |
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563 } else { |
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564 top_line = 0; |
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565 bottom_line = (context->regs[REG_WINDOW_V] & 0x1F) << window_line_shift; |
41
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566 } |
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567 if ((column >= left_col && column < right_col) || (line >= top_line && line < bottom_line)) { |
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568 uint16_t address = context->regs[REG_WINDOW] << 10; |
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569 uint16_t line_offset, offset, mask; |
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570 if (context->latched_mode & BIT_H40) { |
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571 address &= 0xF000; |
417
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572 line_offset = (((line) >> vscroll_shift) * 64 * 2) & 0xFFF; |
41
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573 mask = 0x7F; |
450
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574 |
41
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575 } else { |
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576 address &= 0xF800; |
417
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577 line_offset = (((line) >> vscroll_shift) * 32 * 2) & 0xFFF; |
41
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578 mask = 0x3F; |
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579 } |
417
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580 if (context->double_res) { |
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581 mask <<= 1; |
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582 mask |= 1; |
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583 } |
42
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Fix bug in tile address masking. Remove some debug code from window plane.
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41
diff
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584 offset = address + line_offset + (((column - 2) * 2) & mask); |
41
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585 context->col_1 = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
54
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43
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586 //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
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587 offset = address + line_offset + (((column - 1) * 2) & mask); |
41
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588 context->col_2 = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
417
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589 context->v_offset = (line) & v_offset_mask; |
41
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590 context->flags |= FLAG_WINDOW; |
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591 return; |
40 | 592 } |
593 context->flags &= ~FLAG_WINDOW; | |
594 } | |
20
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595 uint16_t vscroll; |
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596 switch(context->regs[REG_SCROLL] & 0x30) |
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597 { |
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598 case 0: |
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599 vscroll = 0xFF; |
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600 break; |
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|
601 case 0x10: |
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|
602 vscroll = 0x1FF; |
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603 break; |
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changeset
|
604 case 0x20: |
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605 //TODO: Verify this behavior |
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606 vscroll = 0; |
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607 break; |
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608 case 0x30: |
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609 vscroll = 0x3FF; |
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610 break; |
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611 } |
414
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612 if (context->double_res) { |
413
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613 vscroll <<= 1; |
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614 vscroll |= 1; |
414
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|
615 } |
454
e9b6fe443bf2
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453
diff
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|
616 vscroll &= (context->vsram[(context->regs[REG_MODE_3] & BIT_VSCROLL ? (column-2)&63 : 0) + vsram_off] + line); |
414
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diff
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|
617 context->v_offset = vscroll & v_offset_mask; |
26
a7c2b92d8056
Fix management of context->sprite_draws so the sprite layer only draws when it should
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25
diff
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|
618 //printf("%s | line %d, vsram: %d, vscroll: %d, v_offset: %d\n",(vsram_off ? "B" : "A"), line, context->vsram[context->regs[REG_MODE_3] & 0x4 ? column : 0], vscroll, context->v_offset); |
414
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diff
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619 vscroll >>= vscroll_shift; |
20
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620 uint16_t hscroll_mask; |
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|
621 uint16_t v_mul; |
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622 switch(context->regs[REG_SCROLL] & 0x3) |
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623 { |
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|
624 case 0: |
108
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Fix horizontal mask values for scroll plane map address calculation
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87
diff
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|
625 hscroll_mask = 0x1F; |
20
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626 v_mul = 64; |
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|
627 break; |
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|
628 case 0x1: |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
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38
diff
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|
629 hscroll_mask = 0x3F; |
20
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630 v_mul = 128; |
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|
631 break; |
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|
632 case 0x2: |
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|
633 //TODO: Verify this behavior |
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|
634 hscroll_mask = 0; |
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|
635 v_mul = 0; |
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|
636 break; |
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|
637 case 0x3: |
108
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diff
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|
638 hscroll_mask = 0x7F; |
20
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|
639 v_mul = 256; |
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|
640 break; |
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|
641 } |
28 | 642 uint16_t hscroll, offset; |
643 for (int i = 0; i < 2; i++) { | |
39
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38
diff
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|
644 hscroll = (column - 2 + i - ((hscroll_val/8) & 0xFFFE)) & hscroll_mask; |
3c69319269ef
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38
diff
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|
645 offset = address + ((vscroll * v_mul + hscroll*2) & 0x1FFF); |
3c69319269ef
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38
diff
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646 //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 | 647 uint16_t col_val = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
648 if (i) { | |
649 context->col_2 = col_val; | |
650 } else { | |
651 context->col_1 = col_val; | |
652 } | |
653 } | |
20
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|
654 } |
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|
655 |
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|
656 void read_map_scroll_a(uint16_t column, uint32_t line, vdp_context * context) |
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|
657 { |
25
4d0c20ad815a
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24
diff
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|
658 read_map_scroll(column, 0, line, (context->regs[REG_SCROLL_A] & 0x38) << 10, context->hscroll_a, context); |
20
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|
659 } |
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|
660 |
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|
661 void read_map_scroll_b(uint16_t column, uint32_t line, vdp_context * context) |
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662 { |
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663 read_map_scroll(column, 1, line, (context->regs[REG_SCROLL_B] & 0x7) << 13, context->hscroll_b, context); |
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664 } |
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665 |
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666 void render_map(uint16_t col, uint8_t * tmp_buf, uint8_t offset, vdp_context * context) |
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667 { |
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668 uint16_t address; |
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669 uint8_t shift, add; |
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670 if (context->double_res) { |
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671 address = ((col & 0x3FF) << 6); |
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672 shift = 1; |
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673 add = context->framebuf != context->oddbuf ? 1 : 0; |
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674 } else { |
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675 address = ((col & 0x7FF) << 5); |
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676 shift = 0; |
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677 add = 0; |
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678 } |
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679 if (col & MAP_BIT_V_FLIP) { |
414
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680 address += 28 - 4 * context->v_offset/*((context->v_offset << shift) + add)*/; |
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681 } else { |
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682 address += 4 * context->v_offset/*((context->v_offset << shift) + add)*/; |
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683 } |
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684 uint16_t pal_priority = (col >> 9) & 0x70; |
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685 int32_t dir; |
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686 if (col & MAP_BIT_H_FLIP) { |
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687 offset += 7; |
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688 offset &= SCROLL_BUFFER_MASK; |
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689 dir = -1; |
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690 } else { |
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|
691 dir = 1; |
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692 } |
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693 for (uint32_t i=0; i < 4; i++, address++) |
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694 { |
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695 tmp_buf[offset] = pal_priority | (context->vdpmem[address] >> 4); |
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696 offset += dir; |
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697 offset &= SCROLL_BUFFER_MASK; |
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698 tmp_buf[offset] = pal_priority | (context->vdpmem[address] & 0xF); |
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699 offset += dir; |
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700 offset &= SCROLL_BUFFER_MASK; |
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701 } |
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|
702 } |
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Mostly broken VDP core and savestate viewer
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703 |
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704 void render_map_1(vdp_context * context) |
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705 { |
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706 render_map(context->col_1, context->tmp_buf_a, context->buf_a_off, context); |
20
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707 } |
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parents:
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|
708 |
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parents:
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|
709 void render_map_2(vdp_context * context) |
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|
710 { |
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711 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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|
712 } |
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|
713 |
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|
714 void render_map_3(vdp_context * context) |
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|
715 { |
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changeset
|
716 render_map(context->col_1, context->tmp_buf_b, context->buf_b_off, context); |
20
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parents:
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717 } |
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diff
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|
718 |
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719 void render_map_output(uint32_t line, int32_t col, vdp_context * context) |
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diff
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|
720 { |
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changeset
|
721 if (line >= 240) { |
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Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
722 return; |
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diff
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|
723 } |
436
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427
diff
changeset
|
724 render_map(context->col_2, context->tmp_buf_b, context->buf_b_off+8, context); |
426
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Mike Pavone <pavone@retrodev.com>
parents:
424
diff
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|
725 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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424
diff
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|
726 uint32_t *dst32; |
436
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parents:
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diff
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727 uint8_t *sprite_buf, *plane_a, *plane_b; |
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427
diff
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|
728 int plane_a_off, plane_b_off; |
20
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diff
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|
729 if (col) |
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parents:
diff
changeset
|
730 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
731 col-=2; |
426
add9e2f5c0e3
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Mike Pavone <pavone@retrodev.com>
parents:
424
diff
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|
732 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
|
733 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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|
734 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
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|
735 } else { |
add9e2f5c0e3
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parents:
424
diff
changeset
|
736 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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diff
changeset
|
737 dst += line * 320 + col * 8; |
add9e2f5c0e3
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parents:
424
diff
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|
738 } |
20
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parents:
diff
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|
739 sprite_buf = context->linebuf + col * 8; |
437
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Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
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|
740 uint8_t a_src, src; |
40 | 741 if (context->flags & FLAG_WINDOW) { |
436
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parents:
427
diff
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|
742 plane_a_off = context->buf_a_off; |
437
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parents:
436
diff
changeset
|
743 a_src = DBG_SRC_W; |
40 | 744 } else { |
436
e341fd5aa996
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parents:
427
diff
changeset
|
745 plane_a_off = context->buf_a_off - (context->hscroll_a & 0xF); |
437
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parents:
436
diff
changeset
|
746 a_src = DBG_SRC_A; |
40 | 747 } |
436
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parents:
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diff
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|
748 plane_b_off = context->buf_b_off - (context->hscroll_b & 0xF); |
30 | 749 //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
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parents:
438
diff
changeset
|
750 |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
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191
diff
changeset
|
751 if (context->regs[REG_MODE_4] & BIT_HILIGHT) { |
436
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parents:
427
diff
changeset
|
752 for (int i = 0; i < 16; ++plane_a_off, ++plane_b_off, ++sprite_buf, ++i) { |
230
d3266cee02c9
Implemented shadow hilight mode.
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191
diff
changeset
|
753 uint8_t pixel; |
436
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parents:
427
diff
changeset
|
754 plane_a = context->tmp_buf_a + (plane_a_off & SCROLL_BUFFER_MASK); |
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parents:
427
diff
changeset
|
755 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
|
756 uint32_t * colors = context->colors; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
757 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
|
758 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
|
759 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
|
760 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
|
761 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
|
762 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
|
763 } |
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
|
764 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
|
765 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
|
766 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
|
767 } |
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
|
768 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
|
769 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
|
770 if (sprite_color == 0x3E) { |
437
afbea09d7fb4
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parents:
436
diff
changeset
|
771 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
|
772 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
|
773 } 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
|
774 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
|
775 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
|
776 } 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
|
777 pixel = *sprite_buf; |
437
afbea09d7fb4
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Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
778 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
|
779 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
|
780 src |= DBG_SHADOW; |
437
afbea09d7fb4
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Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
781 colors += CRAM_SIZE; |
230
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
782 } |
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
|
783 |
230
d3266cee02c9
Implemented shadow hilight mode.
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parents:
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diff
changeset
|
784 } |
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
|
785 } 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
|
786 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
|
787 src |= DBG_SHADOW; |
230
d3266cee02c9
Implemented shadow hilight mode.
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parents:
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diff
changeset
|
788 } |
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:
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diff
changeset
|
789 pixel &= 0x3F; |
437
afbea09d7fb4
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parents:
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diff
changeset
|
790 uint32_t outpixel; |
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parents:
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diff
changeset
|
791 if (context->debug) { |
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parents:
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diff
changeset
|
792 outpixel = context->debugcolors[src]; |
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parents:
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changeset
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793 } else { |
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Restore one of the VDP debugging modes
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parents:
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changeset
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794 outpixel = colors[pixel]; |
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parents:
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diff
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795 } |
426
add9e2f5c0e3
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parents:
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diff
changeset
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796 if (context->b32) { |
437
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parents:
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diff
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797 *(dst32++) = outpixel; |
426
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parents:
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diff
changeset
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798 } else { |
437
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parents:
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diff
changeset
|
799 *(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
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parents:
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diff
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800 } |
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parents:
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changeset
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801 //*dst = (context->cram[pixel & 0x3F] & 0xEEE) | ((pixel & BUF_BIT_PRIORITY) ? FBUF_BIT_PRIORITY : 0) | src; |
20
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diff
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802 } |
230
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Implemented shadow hilight mode.
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parents:
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diff
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|
803 } else { |
436
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parents:
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diff
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804 for (int i = 0; i < 16; ++plane_a_off, ++plane_b_off, ++sprite_buf, ++i) { |
e341fd5aa996
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parents:
427
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805 plane_a = context->tmp_buf_a + (plane_a_off & SCROLL_BUFFER_MASK); |
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parents:
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diff
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806 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
|
807 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
|
808 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
|
809 if (*plane_b & 0xF) { |
230
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parents:
191
diff
changeset
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810 pixel = *plane_b; |
437
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parents:
436
diff
changeset
|
811 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
|
812 } |
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
|
813 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
|
814 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
|
815 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
|
816 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
503
diff
changeset
|
817 if (*sprite_buf & 0xF && (*sprite_buf & BUF_BIT_PRIORITY) >= (pixel & BUF_BIT_PRIORITY)) { |
230
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Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
818 pixel = *sprite_buf; |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
819 src = DBG_SRC_S; |
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Mike Pavone <pavone@retrodev.com>
parents:
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diff
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|
820 } |
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parents:
436
diff
changeset
|
821 uint32_t outpixel; |
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parents:
436
diff
changeset
|
822 if (context->debug) { |
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parents:
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diff
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|
823 outpixel = context->debugcolors[src]; |
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parents:
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diff
changeset
|
824 } else { |
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parents:
436
diff
changeset
|
825 outpixel = context->colors[pixel & 0x3F]; |
230
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Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
826 } |
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
|
827 if (context->b32) { |
437
afbea09d7fb4
Restore one of the VDP debugging modes
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parents:
436
diff
changeset
|
828 *(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
|
829 } else { |
437
afbea09d7fb4
Restore one of the VDP debugging modes
Mike Pavone <pavone@retrodev.com>
parents:
436
diff
changeset
|
830 *(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
|
831 } |
230
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
832 } |
20
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parents:
diff
changeset
|
833 } |
f664eeb55cb4
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parents:
diff
changeset
|
834 } |
436
e341fd5aa996
Implement the scroll ring buffer properly without memcpy
Mike Pavone <pavone@retrodev.com>
parents:
427
diff
changeset
|
835 context->buf_a_off = (context->buf_a_off + SCROLL_BUFFER_DRAW) & SCROLL_BUFFER_MASK; |
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Implement the scroll ring buffer properly without memcpy
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parents:
427
diff
changeset
|
836 context->buf_b_off = (context->buf_b_off + SCROLL_BUFFER_DRAW) & SCROLL_BUFFER_MASK; |
20
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parents:
diff
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|
837 } |
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parents:
diff
changeset
|
838 |
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parents:
diff
changeset
|
839 #define COLUMN_RENDER_BLOCK(column, startcyc) \ |
f664eeb55cb4
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parents:
diff
changeset
|
840 case startcyc:\ |
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parents:
diff
changeset
|
841 read_map_scroll_a(column, line, context);\ |
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Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
842 break;\ |
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parents:
diff
changeset
|
843 case (startcyc+1):\ |
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parents:
diff
changeset
|
844 external_slot(context);\ |
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parents:
diff
changeset
|
845 break;\ |
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parents:
diff
changeset
|
846 case (startcyc+2):\ |
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parents:
diff
changeset
|
847 render_map_1(context);\ |
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parents:
diff
changeset
|
848 break;\ |
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parents:
diff
changeset
|
849 case (startcyc+3):\ |
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parents:
diff
changeset
|
850 render_map_2(context);\ |
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parents:
diff
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|
851 break;\ |
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parents:
diff
changeset
|
852 case (startcyc+4):\ |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
853 read_map_scroll_b(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
854 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
855 case (startcyc+5):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
856 read_sprite_x(line, context);\ |
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parents:
diff
changeset
|
857 break;\ |
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parents:
diff
changeset
|
858 case (startcyc+6):\ |
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parents:
diff
changeset
|
859 render_map_3(context);\ |
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parents:
diff
changeset
|
860 break;\ |
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parents:
diff
changeset
|
861 case (startcyc+7):\ |
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Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
862 render_map_output(line, column, context);\ |
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parents:
diff
changeset
|
863 break; |
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parents:
diff
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|
864 |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
865 #define COLUMN_RENDER_BLOCK_REFRESH(column, startcyc) \ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
866 case startcyc:\ |
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Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
867 read_map_scroll_a(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
868 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
869 case (startcyc+1):\ |
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Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
870 break;\ |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
871 case (startcyc+2):\ |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
872 render_map_1(context);\ |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
873 break;\ |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
874 case (startcyc+3):\ |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
875 render_map_2(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
876 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
877 case (startcyc+4):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
878 read_map_scroll_b(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
879 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
880 case (startcyc+5):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
881 read_sprite_x(line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
882 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
883 case (startcyc+6):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
884 render_map_3(context);\ |
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+7):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
887 render_map_output(line, column, 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 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
890 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
|
891 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
892 uint16_t address; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
893 uint32_t mask; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
894 switch(linecyc) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
895 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
896 //sprite render to line buffer starts |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
897 case 0: |
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
|
898 context->cur_slot = MAX_DRAWS-1; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
899 memset(context->linebuf, 0, LINEBUF_SIZE); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
900 case 1: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
901 case 2: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
902 case 3: |
329
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
903 if (line == 0xFF) { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
904 external_slot(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
905 } else { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
906 render_sprite_cells(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
907 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
908 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
909 //sprite attribute table scan starts |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
910 case 4: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
911 render_sprite_cells( context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
912 context->sprite_index = 0x80; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
913 context->slot_counter = MAX_SPRITES_LINE; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
914 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
915 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
916 case 5: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
917 case 6: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
918 case 7: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
919 case 8: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
920 case 9: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
921 case 10: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
922 case 11: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
923 case 12: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
924 case 13: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
925 case 14: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
926 case 15: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
927 case 16: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
928 case 17: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
929 case 18: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
930 case 19: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
931 case 20: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
932 //!HSYNC asserted |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
933 case 21: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
934 case 22: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
935 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
936 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
937 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
938 case 23: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
939 external_slot(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
940 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
941 case 24: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
942 case 25: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
943 case 26: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
944 case 27: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
945 case 28: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
946 case 29: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
947 case 30: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
948 case 31: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
949 case 32: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
950 case 33: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
951 case 34: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
952 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
953 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
954 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
955 case 35: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
956 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
957 mask = 0; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
958 if (context->regs[REG_MODE_3] & 0x2) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
959 mask |= 0xF8; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
960 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
961 if (context->regs[REG_MODE_3] & 0x1) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
962 mask |= 0x7; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
963 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
964 line &= mask; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
965 address += line * 4; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
966 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
|
967 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
|
968 //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
|
969 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
970 case 36: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
971 //!HSYNC high |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
972 case 37: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
973 case 38: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
974 case 39: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
975 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
976 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
977 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
978 case 40: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
979 read_map_scroll_a(0, line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
980 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
981 case 41: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
982 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
983 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
984 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
985 case 42: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
986 render_map_1(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
987 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
988 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
989 case 43: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
990 render_map_2(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
991 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
992 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
993 case 44: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
994 read_map_scroll_b(0, line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
995 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
996 case 45: |
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; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1000 case 46: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1001 render_map_3(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; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1004 case 47: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1005 render_map_output(line, 0, context); |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1006 scan_sprite_table(line, context);//Just a guess |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1007 //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
|
1008 //filled rather than the number of available slots |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1009 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; |
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
1010 context->cur_slot = MAX_SPRITES_LINE-1; |
20
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1011 context->sprite_draws = MAX_DRAWS; |
36
04672c060062
Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents:
35
diff
changeset
|
1012 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1013 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1014 COLUMN_RENDER_BLOCK(2, 48) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1015 COLUMN_RENDER_BLOCK(4, 56) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1016 COLUMN_RENDER_BLOCK(6, 64) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1017 COLUMN_RENDER_BLOCK_REFRESH(8, 72) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1018 COLUMN_RENDER_BLOCK(10, 80) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1019 COLUMN_RENDER_BLOCK(12, 88) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1020 COLUMN_RENDER_BLOCK(14, 96) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1021 COLUMN_RENDER_BLOCK_REFRESH(16, 104) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1022 COLUMN_RENDER_BLOCK(18, 112) |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1023 COLUMN_RENDER_BLOCK(20, 120) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1024 COLUMN_RENDER_BLOCK(22, 128) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1025 COLUMN_RENDER_BLOCK_REFRESH(24, 136) |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1026 COLUMN_RENDER_BLOCK(26, 144) |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1027 COLUMN_RENDER_BLOCK(28, 152) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1028 COLUMN_RENDER_BLOCK(30, 160) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1029 COLUMN_RENDER_BLOCK_REFRESH(32, 168) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1030 COLUMN_RENDER_BLOCK(34, 176) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1031 COLUMN_RENDER_BLOCK(36, 184) |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1032 COLUMN_RENDER_BLOCK(38, 192) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1033 COLUMN_RENDER_BLOCK_REFRESH(40, 200) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1034 case 208: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1035 case 209: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1036 external_slot(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1037 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1038 default: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1039 //leftovers from HSYNC clock change nonsense |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1040 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1041 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1042 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1043 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1044 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
|
1045 { |
37 | 1046 uint16_t address; |
1047 uint32_t mask; | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1048 switch(linecyc) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1049 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1050 //sprite render to line buffer starts |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1051 case 0: |
37 | 1052 context->cur_slot = MAX_DRAWS_H32-1; |
1053 memset(context->linebuf, 0, LINEBUF_SIZE); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1054 case 1: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1055 case 2: |
37 | 1056 case 3: |
329
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1057 if (line == 0xFF) { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1058 external_slot(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1059 } else { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1060 render_sprite_cells(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1061 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1062 break; |
37 | 1063 //sprite attribute table scan starts |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1064 case 4: |
37 | 1065 render_sprite_cells( context); |
1066 context->sprite_index = 0x80; | |
1067 context->slot_counter = MAX_SPRITES_LINE_H32; | |
1068 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1069 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1070 case 5: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1071 case 6: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1072 case 7: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1073 case 8: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1074 case 9: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1075 case 10: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1076 case 11: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1077 case 12: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1078 case 13: |
37 | 1079 render_sprite_cells(context); |
1080 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1081 case 14: |
37 | 1082 external_slot(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1083 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1084 case 15: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1085 case 16: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1086 case 17: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1087 case 18: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1088 case 19: |
37 | 1089 //HSYNC start |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1090 case 20: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1091 case 21: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1092 case 22: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1093 case 23: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1094 case 24: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1095 case 25: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1096 case 26: |
37 | 1097 render_sprite_cells(context); |
1098 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1099 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1100 case 27: |
37 | 1101 external_slot(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1102 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1103 case 28: |
37 | 1104 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
1105 mask = 0; | |
1106 if (context->regs[REG_MODE_3] & 0x2) { | |
1107 mask |= 0xF8; | |
1108 } | |
1109 if (context->regs[REG_MODE_3] & 0x1) { | |
1110 mask |= 0x7; | |
1111 } | |
1112 line &= mask; | |
1113 address += line * 4; | |
1114 context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1]; | |
1115 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3]; | |
1116 //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
|
1117 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1118 case 29: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1119 case 30: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1120 case 31: |
37 | 1121 case 32: |
1122 render_sprite_cells(context); | |
1123 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1124 break; |
37 | 1125 //!HSYNC high |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1126 case 33: |
37 | 1127 read_map_scroll_a(0, line, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1128 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1129 case 34: |
37 | 1130 render_sprite_cells(context); |
1131 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1132 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1133 case 35: |
37 | 1134 render_map_1(context); |
1135 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
|
1136 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1137 case 36: |
37 | 1138 render_map_2(context); |
1139 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
|
1140 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1141 case 37: |
37 | 1142 read_map_scroll_b(0, line, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1143 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1144 case 38: |
37 | 1145 render_sprite_cells(context); |
1146 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1147 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1148 case 39: |
37 | 1149 render_map_3(context); |
1150 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
|
1151 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1152 case 40: |
37 | 1153 render_map_output(line, 0, context); |
1154 scan_sprite_table(line, context);//Just a guess | |
1155 //reverse context slot counter so it counts the number of sprite slots | |
1156 //filled rather than the number of available slots | |
1157 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; | |
1158 context->cur_slot = MAX_SPRITES_LINE_H32-1; | |
1159 context->sprite_draws = MAX_DRAWS_H32; | |
1160 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1161 break; |
37 | 1162 COLUMN_RENDER_BLOCK(2, 41) |
1163 COLUMN_RENDER_BLOCK(4, 49) | |
1164 COLUMN_RENDER_BLOCK(6, 57) | |
1165 COLUMN_RENDER_BLOCK_REFRESH(8, 65) | |
1166 COLUMN_RENDER_BLOCK(10, 73) | |
1167 COLUMN_RENDER_BLOCK(12, 81) | |
1168 COLUMN_RENDER_BLOCK(14, 89) | |
1169 COLUMN_RENDER_BLOCK_REFRESH(16, 97) | |
1170 COLUMN_RENDER_BLOCK(18, 105) | |
1171 COLUMN_RENDER_BLOCK(20, 113) | |
1172 COLUMN_RENDER_BLOCK(22, 121) | |
1173 COLUMN_RENDER_BLOCK_REFRESH(24, 129) | |
1174 COLUMN_RENDER_BLOCK(26, 137) | |
1175 COLUMN_RENDER_BLOCK(28, 145) | |
1176 COLUMN_RENDER_BLOCK(30, 153) | |
1177 COLUMN_RENDER_BLOCK_REFRESH(32, 161) | |
20
f664eeb55cb4
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|
1178 case 169: |
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1179 case 170: |
37 | 1180 external_slot(context); |
20
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parents:
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|
1181 break; |
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1182 } |
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1183 } |
503
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1184 |
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|
1185 void vdp_h40_line(uint32_t line, vdp_context * context) |
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1186 { |
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1187 context->cur_slot = MAX_DRAWS-1; |
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|
1188 memset(context->linebuf, 0, LINEBUF_SIZE); |
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1189 if (line == 0xFF) { |
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|
1190 external_slot(context); |
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1191 if (context->flags & FLAG_DMA_RUN) { |
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1192 run_dma_src(context, 0); |
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1193 } |
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1194 external_slot(context); |
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1195 if (context->flags & FLAG_DMA_RUN) { |
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1196 run_dma_src(context, 0); |
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1197 } |
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1198 external_slot(context); |
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1199 if (context->flags & FLAG_DMA_RUN) { |
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1200 run_dma_src(context, 0); |
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1201 } |
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1202 external_slot(context); |
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1203 if (context->flags & FLAG_DMA_RUN) { |
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1204 run_dma_src(context, 0); |
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1205 } |
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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1206 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>
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|
1207 { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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|
1208 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.
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|
1209 } |
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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|
1210 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.
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|
1211 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.
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|
1212 { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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|
1213 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.
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|
1214 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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|
1215 //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.
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|
1216 //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.
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|
1217 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; |
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The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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|
1218 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.
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parents:
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|
1219 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:
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|
1220 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
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|
1221 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
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|
1222 { |
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
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|
1223 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
|
1224 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
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|
1225 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
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|
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
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|
1227 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
|
1228 |
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
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|
1229 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
|
1230 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
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|
1231 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
|
1232 } |
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
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|
1233 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
|
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
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|
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
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|
1241 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
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|
1242 } |
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 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
|
1244 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
|
1245 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
|
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
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|
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 return; |
503
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parents:
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diff
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|
1249 } |
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
|
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 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
|
1252 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
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|
1253 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
|
1254 render_sprite_cells(context); |
503
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Small optimization for H40 mode
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parents:
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diff
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1255 context->sprite_index = 0x80; |
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Small optimization for H40 mode
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parents:
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diff
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1256 context->slot_counter = MAX_SPRITES_LINE; |
eee6be465c47
Small optimization for H40 mode
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parents:
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diff
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1257 for (int i = 0; i < 19; i++) |
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Small optimization for H40 mode
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parents:
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diff
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|
1258 { |
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Small optimization for H40 mode
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parents:
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diff
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|
1259 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
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|
1260 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
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1261 } |
eee6be465c47
Small optimization for H40 mode
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parents:
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diff
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1262 external_slot(context); |
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Small optimization for H40 mode
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parents:
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diff
changeset
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1263 for (int i = 0; i < 11; i++) |
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Small optimization for H40 mode
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parents:
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diff
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|
1264 { |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
1265 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
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|
1266 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
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1267 } |
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Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
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diff
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|
1268 uint16_t address; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1269 uint32_t mask; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1270 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1271 mask = 0; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1272 if (context->regs[REG_MODE_3] & 0x2) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1273 mask |= 0xF8; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1274 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1275 if (context->regs[REG_MODE_3] & 0x1) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1276 mask |= 0x7; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1277 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1278 address += (line & mask) * 4; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1279 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
|
1280 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
|
1281 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1282 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1283 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1284 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1285 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1286 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1287 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1288 scan_sprite_table(line, context); |
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 read_map_scroll_a(0, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1291 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1292 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1293 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1294 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1295 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1296 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1297 read_map_scroll_b(0, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1298 render_sprite_cells(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1299 scan_sprite_table(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1300 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1301 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1302 render_map_output(line, 0, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1303 scan_sprite_table(line, context);//Just a guess |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1304 //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
|
1305 //filled rather than the number of available slots |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1306 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1307 context->cur_slot = MAX_SPRITES_LINE-1; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1308 context->sprite_draws = MAX_DRAWS; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1309 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1310 for (int column = 2; column < 42; column += 2) |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1311 { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1312 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1313 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1314 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1315 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1316 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1317 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1318 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1319 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1320 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1321 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1322 render_map_output(line, column, context); |
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 column += 2; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1325 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1326 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1327 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1328 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1329 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1330 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1331 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1332 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1333 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1334 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1335 render_map_output(line, column, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1336 |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1337 column += 2; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1338 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1339 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1340 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1341 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1342 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1343 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1344 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1345 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1346 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1347 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1348 render_map_output(line, column, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1349 |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1350 column += 2; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1351 read_map_scroll_a(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1352 render_map_1(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1353 render_map_2(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1354 read_map_scroll_b(column, line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1355 read_sprite_x(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1356 render_map_3(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1357 render_map_output(line, column, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1358 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1359 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1360 if (context->flags & FLAG_DMA_RUN) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1361 run_dma_src(context, 0); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1362 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1363 external_slot(context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1364 } |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1365 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1366 void latch_mode(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1367 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1368 context->latched_mode = (context->regs[REG_MODE_4] & 0x81) | (context->regs[REG_MODE_2] & BIT_PAL); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1369 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1370 |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1371 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
|
1372 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1373 if (line > 0) { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1374 line -= 1; |
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
|
1375 int starti = -1; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1376 if (context->latched_mode & BIT_H40) { |
462
5677c053edd6
Fix timing of backdrop rendering when the display is turned off
Mike Pavone <pavone@retrodev.com>
parents:
461
diff
changeset
|
1377 if (slot >= 55 && slot < 210) { |
5677c053edd6
Fix timing of backdrop rendering when the display is turned off
Mike Pavone <pavone@retrodev.com>
parents:
461
diff
changeset
|
1378 uint32_t x = (slot-55)*2; |
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
|
1379 starti = line * 320 + x; |
462
5677c053edd6
Fix timing of backdrop rendering when the display is turned off
Mike Pavone <pavone@retrodev.com>
parents:
461
diff
changeset
|
1380 } else if (slot < 5) { |
5677c053edd6
Fix timing of backdrop rendering when the display is turned off
Mike Pavone <pavone@retrodev.com>
parents:
461
diff
changeset
|
1381 uint32_t x = (slot + 155)*2; |
5677c053edd6
Fix timing of backdrop rendering when the display is turned off
Mike Pavone <pavone@retrodev.com>
parents:
461
diff
changeset
|
1382 starti = (line-1)*320 + x; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1383 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1384 } else { |
462
5677c053edd6
Fix timing of backdrop rendering when the display is turned off
Mike Pavone <pavone@retrodev.com>
parents:
461
diff
changeset
|
1385 if (slot >= 48 && slot < 171) { |
5677c053edd6
Fix timing of backdrop rendering when the display is turned off
Mike Pavone <pavone@retrodev.com>
parents:
461
diff
changeset
|
1386 uint32_t x = (slot-48)*2; |
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
|
1387 starti = line * 320 + x; |
462
5677c053edd6
Fix timing of backdrop rendering when the display is turned off
Mike Pavone <pavone@retrodev.com>
parents:
461
diff
changeset
|
1388 } else if (slot < 5) { |
5677c053edd6
Fix timing of backdrop rendering when the display is turned off
Mike Pavone <pavone@retrodev.com>
parents:
461
diff
changeset
|
1389 uint32_t x = (slot + 123)*2; |
5677c053edd6
Fix timing of backdrop rendering when the display is turned off
Mike Pavone <pavone@retrodev.com>
parents:
461
diff
changeset
|
1390 starti = (line-1)*320 + x; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1391 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1392 } |
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
|
1393 if (starti >= 0) { |
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
|
1394 if (context->b32) { |
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
|
1395 uint32_t color = context->colors[context->regs[REG_BG_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
|
1396 uint32_t * start = 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
changeset
|
1397 start += starti; |
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
|
1398 for (int i = 0; i < 2; i++) { |
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
|
1399 *(start++) = color; |
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
|
1400 } |
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
|
1401 } else { |
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
|
1402 uint16_t color = context->colors[context->regs[REG_BG_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
|
1403 uint16_t * start = 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
changeset
|
1404 start += starti; |
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
|
1405 for (int i = 0; i < 2; i++) { |
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
|
1406 *(start++) = color; |
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
|
1407 } |
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
|
1408 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1409 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1410 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1411 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1412 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1413 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
|
1414 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1415 while(context->cycles < target_cycles) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1416 { |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1417 context->flags &= ~FLAG_UNUSED_SLOT; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1418 uint32_t line = context->cycles / MCLKS_LINE; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1419 uint32_t active_lines = context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE; |
334
4c91470e1a53
Only latch video mode at the very beginning of the frame to avoid problems with the cycle count getting out of sync with what I expect
Mike Pavone <pavone@retrodev.com>
parents:
333
diff
changeset
|
1420 if (!context->cycles) { |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1421 latch_mode(context); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1422 } |
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
|
1423 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
|
1424 if (linecyc == 0) { |
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
|
1425 if (line <= 1 || line >= active_lines) { |
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
|
1426 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
|
1427 } 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
|
1428 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
|
1429 } 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
|
1430 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
|
1431 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
|
1432 } |
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 } else if(line == active_lines) { |
331
de17e0352f27
Fixup VINT cycle and HBLANK flag for the previous timing fixes
Mike Pavone <pavone@retrodev.com>
parents:
330
diff
changeset
|
1434 uint32_t intcyc = context->latched_mode & BIT_H40 ? VINT_CYCLE_H40 : VINT_CYCLE_H32; |
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
|
1435 if (linecyc == intcyc) { |
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 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
|
1437 } |
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 } |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1439 uint32_t inccycles, slot; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1440 if (context->latched_mode & BIT_H40){ |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1441 if (linecyc < MCLKS_SLOT_H40*HSYNC_SLOT_H40) { |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1442 slot = linecyc/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
|
1443 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
|
1444 } else if(linecyc < MCLK_WEIRD_END) { |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1445 switch(linecyc-(MCLKS_SLOT_H40*HSYNC_SLOT_H40)) |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1446 { |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1447 case 0: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1448 inccycles = 19; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1449 slot = 0; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1450 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1451 case 19: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1452 slot = 1; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1453 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1454 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1455 case 39: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1456 slot = 2; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1457 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1458 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1459 case 59: |
332
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1460 slot = 3; |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1461 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1462 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1463 case 79: |
332
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1464 slot = 4; |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1465 inccycles = 18; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1466 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1467 case 97: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1468 slot = 5; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1469 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1470 break; |
332
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1471 case 117: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1472 slot = 6; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1473 inccycles = 20; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1474 break; |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1475 case 137: |
332
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1476 slot = 7; |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1477 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1478 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1479 case 157: |
332
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1480 slot = 8; |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1481 inccycles = 18; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1482 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1483 case 175: |
332
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1484 slot = 9; |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1485 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1486 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1487 case 195: |
332
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1488 slot = 10; |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1489 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1490 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1491 case 215: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1492 slot = 11; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1493 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1494 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1495 case 235: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1496 slot = 12; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1497 inccycles = 18; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1498 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1499 case 253: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1500 slot = 13; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1501 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1502 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1503 case 273: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1504 slot = 14; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1505 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1506 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1507 case 293: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1508 slot = 15; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1509 inccycles = 20; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1510 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1511 case 313: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1512 slot = 16; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1513 inccycles = 19; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1514 break; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1515 default: |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1516 fprintf(stderr, "cycles after weirdness %d\n", linecyc-(MCLKS_SLOT_H40*HSYNC_SLOT_H40)); |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1517 exit(1); |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1518 } |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1519 slot += HSYNC_SLOT_H40; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1520 } else { |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1521 slot = (linecyc-MCLK_WEIRD_END)/MCLKS_SLOT_H40 + SLOT_WEIRD_END; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1522 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
|
1523 } |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1524 } else { |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1525 inccycles = MCLKS_SLOT_H32; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1526 slot = linecyc/MCLKS_SLOT_H32; |
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1527 } |
329
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
1528 if ((line < active_lines || (line == active_lines && linecyc < (context->latched_mode & BIT_H40 ? 64 : 80))) && context->regs[REG_MODE_2] & DISPLAY_ENABLE) { |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1529 //first sort-of active line is treated as 255 internally |
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
|
1530 //it's used for gathering sprite info for line |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1531 line = (line - 1) & 0xFF; |
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
|
1532 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1533 //Convert to slot number |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1534 if (context->latched_mode & BIT_H40){ |
503
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1535 if (!slot && line != (active_lines-1) && (target_cycles - context->cycles) >= MCLKS_LINE) { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1536 vdp_h40_line(line, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1537 inccycles = MCLKS_LINE; |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1538 } else { |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1539 vdp_h40(line, slot, context); |
eee6be465c47
Small optimization for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
499
diff
changeset
|
1540 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1541 } else { |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1542 vdp_h32(line, slot, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1543 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1544 } else { |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1545 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
|
1546 external_slot(context); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1547 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1548 if (line < active_lines) { |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1549 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
|
1550 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1551 } |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1552 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
|
1553 run_dma_src(context, slot); |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1554 } |
330
57453d3d8be4
Initial stab at implementing funky clock adjustments during HSYNC for H40 mode
Mike Pavone <pavone@retrodev.com>
parents:
329
diff
changeset
|
1555 context->cycles += inccycles; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1556 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1557 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1558 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1559 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
|
1560 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1561 uint32_t target_cycles = ((context->latched_mode & BIT_PAL) ? PAL_ACTIVE : NTSC_ACTIVE) * MCLKS_LINE; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1562 vdp_run_context(context, target_cycles); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1563 return context->cycles; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1564 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1565 |
75 | 1566 void vdp_run_dma_done(vdp_context * context, uint32_t target_cycles) |
1567 { | |
1568 for(;;) { | |
1569 uint32_t dmalen = (context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L]; | |
1570 if (!dmalen) { | |
1571 dmalen = 0x10000; | |
1572 } | |
1573 uint32_t min_dma_complete = dmalen * (context->latched_mode & BIT_H40 ? 16 : 20); | |
1574 if ((context->regs[REG_DMASRC_H] & 0xC0) == 0xC0 || (context->cd & 0xF) == VRAM_WRITE) { | |
1575 //DMA copies take twice as long to complete since they require a read and a write | |
1576 //DMA Fills and transfers to VRAM also take twice as long as it requires 2 writes for a single word | |
1577 min_dma_complete *= 2; | |
1578 } | |
1579 min_dma_complete += context->cycles; | |
1580 if (target_cycles < min_dma_complete) { | |
1581 vdp_run_context(context, target_cycles); | |
1582 return; | |
1583 } else { | |
1584 vdp_run_context(context, min_dma_complete); | |
1585 if (!(context->flags & FLAG_DMA_RUN)) { | |
1586 return; | |
1587 } | |
1588 } | |
1589 } | |
1590 } | |
1591 | |
1592 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
|
1593 { |
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
|
1594 //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
|
1595 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
|
1596 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
|
1597 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1598 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
|
1599 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
|
1600 context->cd = (context->cd & 0x3) | ((value >> 2) & 0x3C); |
75 | 1601 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
|
1602 //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
|
1603 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
|
1604 // |
75 | 1605 if((context->regs[REG_DMASRC_H] & 0xC0) != 0x80) { |
1606 //DMA copy or 68K -> VDP, transfer starts immediately | |
1607 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
|
1608 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
|
1609 //printf("DMA start at cycle %d\n", context->cycles); |
75 | 1610 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
|
1611 //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 | 1612 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
|
1613 } else { |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1614 //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 | 1615 } |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1616 } 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
|
1617 //printf("DMA Fill Address: %X, New CD: %X\n", context->address, context->cd); |
75 | 1618 } |
63
a6dd5b7a971b
Add FPS counter to console output
Mike Pavone <pavone@retrodev.com>
parents:
58
diff
changeset
|
1619 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1620 } else { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1621 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
|
1622 //Register write |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1623 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
|
1624 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
|
1625 //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
|
1626 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
|
1627 context->hv_latch = vdp_hv_counter_read(context); |
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1628 } |
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
|
1629 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
|
1630 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
|
1631 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1632 context->regs[reg] = value; |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1633 if (reg == REG_MODE_4) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1634 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
|
1635 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
|
1636 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
|
1637 } |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1638 } |
476
5d7bc113653b
Clear the low 2 bits of CD when a register is written to
Mike Pavone <pavone@retrodev.com>
parents:
475
diff
changeset
|
1639 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
|
1640 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1641 } else { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1642 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
|
1643 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
|
1644 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
|
1645 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1646 } |
75 | 1647 return 0; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1648 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1649 |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1650 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
|
1651 { |
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 //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
|
1653 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
|
1654 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
|
1655 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1656 context->flags &= ~FLAG_PENDING; |
109
004dd46e0a97
COmment out fifo full debug printf
Mike Pavone <pavone@retrodev.com>
parents:
108
diff
changeset
|
1657 /*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
|
1658 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
|
1659 }*/ |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1660 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
|
1661 context->flags &= ~FLAG_DMA_RUN; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1662 } |
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
|
1663 while (context->fifo_write == context->fifo_read) { |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1664 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20)); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1665 } |
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
|
1666 fifo_entry * cur = context->fifo + 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
|
1667 cur->cycle = context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20)*FIFO_LATENCY; |
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
|
1668 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
|
1669 cur->value = value; |
460
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1670 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
|
1671 context->flags |= FLAG_DMA_RUN; |
788ba843a731
Implement FIFO latency and improve DMA accuracy
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1672 } |
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
|
1673 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
|
1674 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
|
1675 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
|
1676 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
|
1677 } |
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
|
1678 context->fifo_write = (context->fifo_write + 1) & (FIFO_SIZE-1); |
138 | 1679 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
|
1680 return 0; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1681 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1682 |
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
|
1683 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
|
1684 { |
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
|
1685 //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
|
1686 } |
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
|
1687 |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1688 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
|
1689 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1690 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
|
1691 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
|
1692 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
|
1693 value |= 0x200; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1694 } |
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
|
1695 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
|
1696 value |= 0x100; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1697 } |
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
|
1698 if (context->flags2 & FLAG2_VINT_PENDING) { |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1699 value |= 0x80; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1700 } |
494
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1701 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
|
1702 value |= 0x40; |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1703 } |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1704 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
|
1705 value |= 0x20; |
8ac0eb05642c
Initial implementation of sprite overflow and sprite collision status register flags
Mike Pavone <pavone@retrodev.com>
parents:
481
diff
changeset
|
1706 //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
|
1707 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
|
1708 } |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1709 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
|
1710 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
|
1711 } |
318
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1712 uint32_t line= context->cycles / MCLKS_LINE; |
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1713 uint32_t linecyc = context->cycles % MCLKS_LINE; |
481
1f3450d1129f
Set VBLANK flag in status register when display is disabled
Mike Pavone <pavone@retrodev.com>
parents:
480
diff
changeset
|
1714 if (line >= (context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE) || !(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
|
1715 value |= 0x8; |
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1716 } |
331
de17e0352f27
Fixup VINT cycle and HBLANK flag for the previous timing fixes
Mike Pavone <pavone@retrodev.com>
parents:
330
diff
changeset
|
1717 if (linecyc < (context->latched_mode & BIT_H40 ? HBLANK_CLEAR_H40 : HBLANK_CLEAR_H32)) { |
318
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1718 value |= 0x4; |
789f2f5f2277
Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
parents:
317
diff
changeset
|
1719 } |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
143
diff
changeset
|
1720 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
|
1721 value |= 0x2; |
75 | 1722 } |
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
|
1723 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
|
1724 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
|
1725 } |
459
c49ecf575784
Revert change to VBLANK flag timing based on new direct color DMA test
Mike Pavone <pavone@retrodev.com>
parents:
454
diff
changeset
|
1726 //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
|
1727 return value; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1728 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1729 |
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
|
1730 #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
|
1731 #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
|
1732 #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
|
1733 |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1734 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
|
1735 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1736 context->flags &= ~FLAG_PENDING; |
138 | 1737 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
|
1738 return 0; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1739 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1740 //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
|
1741 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
|
1742 //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
|
1743 while (!(context->flags & FLAG_UNUSED_SLOT)) { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1744 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20)); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1745 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1746 uint16_t value = 0; |
138 | 1747 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
|
1748 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1749 case VRAM_READ: |
472 | 1750 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
|
1751 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
|
1752 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
|
1753 while (!(context->flags & FLAG_UNUSED_SLOT)) { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1754 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20)); |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1755 } |
472 | 1756 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
|
1757 break; |
473
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1758 case VRAM_READ8: |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1759 value = context->vdpmem[context->address ^ 1]; |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1760 value |= context->fifo[context->fifo_write].value & 0xFF00; |
1358045c0bdd
Implement undocumented 8-bit VRAM read
Mike Pavone <pavone@retrodev.com>
parents:
472
diff
changeset
|
1761 break; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1762 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
|
1763 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
|
1764 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
|
1765 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
|
1766 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
|
1767 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
|
1768 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
|
1769 address = 0; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1770 } |
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
|
1771 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
|
1772 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
|
1773 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
|
1774 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1775 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1776 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
|
1777 return value; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1778 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1779 |
137 | 1780 uint16_t vdp_hv_counter_read(vdp_context * context) |
1781 { | |
480
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1782 if (context->regs[REG_MODE_1] & BIT_HVC_LATCH) { |
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1783 return context->hv_latch; |
0737953132ad
Implement HV counter latch
Mike Pavone <pavone@retrodev.com>
parents:
479
diff
changeset
|
1784 } |
137 | 1785 uint32_t line= context->cycles / MCLKS_LINE; |
1786 if (!line) { | |
1787 line = 0xFF; | |
1788 } else { | |
1789 line--; | |
1790 if (line > 0xEA) { | |
1791 line = (line + 0xFA) & 0xFF; | |
1792 } | |
1793 } | |
1794 uint32_t linecyc = context->cycles % MCLKS_LINE; | |
1795 if (context->latched_mode & BIT_H40) { | |
332
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1796 uint32_t slot; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1797 if (linecyc < MCLKS_SLOT_H40*HSYNC_SLOT_H40) { |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1798 slot = linecyc/MCLKS_SLOT_H40; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1799 } else if(linecyc < MCLK_WEIRD_END) { |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1800 switch(linecyc-(MCLKS_SLOT_H40*HSYNC_SLOT_H40)) |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1801 { |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1802 case 0: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1803 slot = 0; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1804 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1805 case 19: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1806 slot = 1; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1807 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1808 case 39: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1809 slot = 2; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1810 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1811 case 59: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1812 slot = 2; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1813 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1814 case 79: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1815 slot = 3; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1816 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1817 case 97: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1818 slot = 4; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1819 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1820 case 117: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1821 slot = 5; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1822 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1823 case 137: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1824 slot = 6; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1825 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1826 case 157: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1827 slot = 7; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1828 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1829 case 175: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1830 slot = 8; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1831 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1832 case 195: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1833 slot = 9; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1834 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1835 case 215: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1836 slot = 11; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1837 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1838 case 235: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1839 slot = 12; |
671a5be51522
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Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1840 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1841 case 253: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1842 slot = 13; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1843 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1844 case 273: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1845 slot = 14; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1846 break; |
671a5be51522
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Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1847 case 293: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1848 slot = 15; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1849 break; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1850 case 313: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1851 slot = 16; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1852 break; |
671a5be51522
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Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1853 default: |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1854 fprintf(stderr, "cycles after weirdness %d\n", linecyc-(MCLKS_SLOT_H40*HSYNC_SLOT_H40)); |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1855 exit(1); |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1856 } |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1857 slot += HSYNC_SLOT_H40; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1858 } else { |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1859 slot = (linecyc-MCLK_WEIRD_END)/MCLKS_SLOT_H40 + SLOT_WEIRD_END; |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1860 } |
671a5be51522
Update hv counter calculation for clock wonkiness
Mike Pavone <pavone@retrodev.com>
parents:
331
diff
changeset
|
1861 linecyc = slot * 2; |
137 | 1862 if (linecyc >= 86) { |
1863 linecyc -= 86; | |
1864 } else { | |
1865 linecyc += 334; | |
1866 } | |
1867 if (linecyc > 0x16C) { | |
1868 linecyc += 92; | |
1869 } | |
1870 } else { | |
1871 linecyc /= 10; | |
1872 if (linecyc >= 74) { | |
1873 linecyc -= 74; | |
1874 } else { | |
1875 linecyc += 268; | |
1876 } | |
1877 if (linecyc > 0x127) { | |
1878 linecyc += 170; | |
1879 } | |
1880 } | |
1881 linecyc &= 0xFF; | |
413
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1882 if (context->double_res) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1883 line <<= 1; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1884 if (line & 0x100) { |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1885 line |= 1; |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1886 } |
36fbbced25c2
Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents:
337
diff
changeset
|
1887 } |
137 | 1888 return (line << 8) | linecyc; |
1889 } | |
1890 | |
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
|
1891 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
|
1892 { |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
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1893 //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.
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1894 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>
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1895 } |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
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parents:
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1896 |
65
aef6302770c2
Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
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1897 void vdp_adjust_cycles(vdp_context * context, uint32_t deduction) |
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Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
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1898 { |
aef6302770c2
Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
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1899 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
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1900 if (context->fifo_read >= 0) { |
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1901 int32_t idx = context->fifo_read; |
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Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
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1902 do { |
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Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
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1903 if (context->fifo[idx].cycle >= deduction) { |
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1904 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
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1905 } else { |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
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1906 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
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1907 } |
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
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1908 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>
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1909 } 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.
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parents:
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1910 } |
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>
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1911 } |
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>
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1912 |
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>
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1913 uint32_t vdp_next_hint(vdp_context * context) |
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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>
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1914 { |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
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1915 if (!(context->regs[REG_MODE_1] & BIT_HINT_EN)) { |
317
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Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1916 return 0xFFFFFFFF; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1917 } |
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Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1918 if (context->flags2 & FLAG2_HINT_PENDING) { |
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Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1919 return context->cycles; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1920 } |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1921 uint32_t active_lines = context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE; |
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Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1922 uint32_t line = context->cycles / MCLKS_LINE; |
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Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1923 if (line >= active_lines) { |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1924 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:
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1925 } |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1926 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.
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1927 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.
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1928 if (!line) { |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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1929 hcycle += MCLKS_LINE; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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parents:
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1930 } |
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:
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|
1931 return hcycle; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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|
1932 } |
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
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|
1933 |
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:
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|
1934 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:
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|
1935 { |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
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|
1936 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.
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parents:
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1937 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
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|
1938 } |
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:
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|
1939 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.
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parents:
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|
1940 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
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|
1941 } |
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
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|
1942 uint32_t active_lines = context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE; |
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:
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|
1943 uint32_t vcycle = MCLKS_LINE * active_lines; |
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:
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|
1944 if (context->latched_mode & BIT_H40) { |
331
de17e0352f27
Fixup VINT cycle and HBLANK flag for the previous timing fixes
Mike Pavone <pavone@retrodev.com>
parents:
330
diff
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|
1945 vcycle += VINT_CYCLE_H40; |
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:
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|
1946 } else { |
331
de17e0352f27
Fixup VINT cycle and HBLANK flag for the previous timing fixes
Mike Pavone <pavone@retrodev.com>
parents:
330
diff
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|
1947 vcycle += VINT_CYCLE_H32; |
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
|
1948 } |
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
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|
1949 if (vcycle < 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
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|
1950 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
|
1951 } |
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
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|
1952 return vcycle; |
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
|
1953 } |
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>
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|
1954 |
333 | 1955 uint32_t vdp_next_vint_z80(vdp_context * context) |
1956 { | |
1957 uint32_t active_lines = context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE; | |
1958 uint32_t vcycle = MCLKS_LINE * active_lines; | |
1959 if (context->latched_mode & BIT_H40) { | |
1960 vcycle += VINT_CYCLE_H40; | |
1961 } else { | |
1962 vcycle += VINT_CYCLE_H32; | |
1963 } | |
1964 return vcycle; | |
1965 } | |
1966 | |
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
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|
1967 void vdp_int_ack(vdp_context * context, uint16_t int_num) |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1968 { |
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
|
1969 if (int_num == 6) { |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1970 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
|
1971 } else if(int_num ==4) { |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1972 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
|
1973 } |
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
|
1974 } |
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
|
1975 |