Mercurial > repos > blastem
annotate vdp.c @ 329:fd5f6577db9b
Implement first line/last line weirdness in VDP
author | Mike Pavone <pavone@retrodev.com> |
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date | Mon, 13 May 2013 21:52:33 -0700 |
parents | bf7ed23efa40 |
children | 57453d3d8be4 |
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1 #include "vdp.h" |
75 | 2 #include "blastem.h" |
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3 #include <stdlib.h> |
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4 #include <string.h> |
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5 |
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6 #define NTSC_ACTIVE 225 |
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7 #define PAL_ACTIVE 241 |
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8 #define BUF_BIT_PRIORITY 0x40 |
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9 #define MAP_BIT_PRIORITY 0x8000 |
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10 #define MAP_BIT_H_FLIP 0x800 |
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11 #define MAP_BIT_V_FLIP 0x1000 |
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12 |
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13 //Mode reg 1 |
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14 #define BIT_HINT_EN 0x10 |
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15 #define BIT_PAL_SEL 0x04 |
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16 #define BIT_HVC_LATCH 0x02 |
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17 #define BIT_DISP_DIS 0x01 |
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18 |
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19 //Mode reg 2 |
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20 #define BIT_DISP_EN 0x40 |
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21 #define BIT_VINT_EN 0x20 |
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22 #define BIT_DMA_ENABLE 0x10 |
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23 #define BIT_PAL 0x08 |
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24 #define BIT_MODE_5 0x04 |
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25 |
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26 //Mode reg 3 |
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27 #define BIT_EINT_EN 0x10 |
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28 #define BIT_VSCROLL 0x04 |
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29 |
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30 //Mode reg 4 |
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31 #define BIT_H40 0x01 |
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32 #define BIT_HILIGHT 0x8 |
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33 |
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34 #define SCROLL_BUFFER_SIZE 32 |
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35 #define SCROLL_BUFFER_DRAW 16 |
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36 |
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37 #define FIFO_SIZE 4 |
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39 #define VINT_SLOTS_H40 (21+16+10) //21 slots before HSYNC, 16 during, 10 after TODO: deal with clock switching during HSYNC |
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40 #define VINT_SLOTS_H32 (33+20+7) //33 slots before HSYNC, 20 during, 7 after TODO: confirm final number |
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41 #define MCLKS_SLOT_H40 16 |
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42 #define MCLKS_SLOT_H32 20 |
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43 |
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44 void init_vdp_context(vdp_context * context) |
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45 { |
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46 memset(context, 0, sizeof(*context)); |
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47 context->vdpmem = malloc(VRAM_SIZE); |
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48 memset(context->vdpmem, 0, VRAM_SIZE); |
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49 context->framebuf = malloc(FRAMEBUF_SIZE); |
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50 memset(context->framebuf, 0, FRAMEBUF_SIZE); |
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51 context->linebuf = malloc(LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2); |
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52 memset(context->linebuf, 0, LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2); |
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53 context->tmp_buf_a = context->linebuf + LINEBUF_SIZE; |
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54 context->tmp_buf_b = context->tmp_buf_a + SCROLL_BUFFER_SIZE; |
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55 context->sprite_draws = MAX_DRAWS; |
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56 context->fifo_cur = malloc(sizeof(fifo_entry) * FIFO_SIZE); |
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57 context->fifo_end = context->fifo_cur + FIFO_SIZE; |
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58 } |
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59 |
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60 void render_sprite_cells(vdp_context * context) |
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61 { |
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62 if (context->cur_slot >= context->sprite_draws) { |
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63 sprite_draw * d = context->sprite_draw_list + context->cur_slot; |
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64 |
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65 uint16_t dir; |
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66 int16_t x; |
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67 if (d->h_flip) { |
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68 x = d->x_pos + 7; |
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69 dir = -1; |
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70 } else { |
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71 x = d->x_pos; |
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72 dir = 1; |
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73 } |
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74 //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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75 context->cur_slot--; |
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76 for (uint16_t address = d->address; address != ((d->address+4) & 0xFFFF); address++) { |
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77 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) { |
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78 context->linebuf[x] = (context->vdpmem[address] >> 4) | d->pal_priority; |
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79 } |
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80 x += dir; |
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81 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) { |
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82 context->linebuf[x] = (context->vdpmem[address] & 0xF) | d->pal_priority; |
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83 } |
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84 x += dir; |
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85 } |
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86 } |
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87 } |
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88 |
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89 void vdp_print_sprite_table(vdp_context * context) |
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90 { |
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91 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9; |
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92 uint16_t current_index = 0; |
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93 uint8_t count = 0; |
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94 do { |
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95 uint16_t address = current_index * 8 + sat_address; |
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96 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * 8; |
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97 uint8_t width = (((context->vdpmem[address+2] >> 2) & 0x3) + 1) * 8; |
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98 int16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & 0x1FF; |
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99 int16_t x = ((context->vdpmem[address+ 6] & 0x3) << 8 | context->vdpmem[address + 7]) & 0x1FF; |
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100 uint16_t link = context->vdpmem[address+3] & 0x7F; |
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101 uint8_t pal = context->vdpmem[address + 4] >> 5 & 0x3; |
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102 uint8_t pri = context->vdpmem[address + 4] >> 7; |
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103 uint16_t pattern = ((context->vdpmem[address + 4] << 8 | context->vdpmem[address + 5]) & 0x7FF) << 5; |
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104 //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); |
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105 current_index = link; |
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106 count++; |
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107 } while (current_index != 0 && count < 80); |
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108 } |
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109 |
327
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110 void vdp_print_reg_explain(vdp_context * context) |
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111 { |
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112 char * hscroll[] = {"full", "7-line", "cell", "line"}; |
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113 printf("**Mode Group**\n" |
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114 "00: %.2X | H-ints %s, Pal Select %d, HVC latch %s, Display gen %s\n" |
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115 "01: %.2X | Display %s, V-ints %s, Height: %d, Mode %d\n" |
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116 "0B: %.2X | E-ints %s, V-Scroll: %s, H-Scroll: %s\n" |
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117 "0C: %.2X | Width: %d, Shadow/Highlight: %s\n", |
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118 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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119 context->regs[REG_MODE_1] & BIT_HVC_LATCH ? "enabled" : "disabled", context->regs[REG_MODE_1] & BIT_DISP_DIS ? "disabled" : "enabled", |
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120 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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121 context->regs[REG_MODE_2] & BIT_PAL ? 30 : 28, context->regs[REG_MODE_2] & BIT_MODE_5 ? 5 : 4, |
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122 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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123 hscroll[context->regs[REG_MODE_3] & 0x3], |
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124 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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125 printf("\n**Table Group**\n" |
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126 "02: %.2X | Scroll A Name Table: $%.4X\n" |
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127 "03: %.2X | Window Name Table: $%.4X\n" |
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128 "04: %.2X | Scroll B Name Table: $%.4X\n" |
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129 "05: %.2X | Sprite Attribute Table: $%.4X\n" |
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130 "0D: %.2X | HScroll Data Table: $%.4X\n", |
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131 context->regs[REG_SCROLL_A], (context->regs[REG_SCROLL_A] & 0x38) << 10, |
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132 context->regs[REG_WINDOW], (context->regs[REG_WINDOW] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x3C : 0x3E)) << 10, |
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133 context->regs[REG_SCROLL_B], (context->regs[REG_SCROLL_B] & 0x7) << 13, |
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134 context->regs[REG_SAT], (context->regs[REG_SAT] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x3E : 0x3F)) << 9, |
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135 context->regs[REG_HSCROLL], (context->regs[REG_HSCROLL] & 0x1F) << 10); |
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136 char * sizes[] = {"32", "64", "invalid", "128"}; |
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137 printf("\n**Misc Group**\n" |
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138 "07: %.2X | Backdrop Color: $%X\n" |
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139 "0A: %.2X | H-Int Counter: %u\n" |
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140 "0F: %.2X | Auto-increment: $%X\n" |
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141 "10: %.2X | Scroll A/B Size: %sx%s\n", |
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142 context->regs[REG_BG_COLOR], context->regs[REG_BG_COLOR] & 0x3F, |
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143 context->regs[REG_HINT], context->regs[REG_HINT], |
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144 context->regs[REG_AUTOINC], context->regs[REG_AUTOINC], |
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145 context->regs[REG_SCROLL], sizes[context->regs[REG_SCROLL] & 0x3], sizes[context->regs[REG_SCROLL] >> 4 & 0x3]); |
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146 |
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147 //TODO: Window Group, DMA Group |
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148 } |
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149 |
20
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150 void scan_sprite_table(uint32_t line, vdp_context * context) |
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151 { |
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152 if (context->sprite_index && context->slot_counter) { |
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153 line += 1; |
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154 line &= 0xFF; |
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155 context->sprite_index &= 0x7F; |
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156 if (context->latched_mode & BIT_H40) { |
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157 if (context->sprite_index >= MAX_SPRITES_FRAME) { |
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158 context->sprite_index = 0; |
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159 return; |
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160 } |
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161 } else if(context->sprite_index >= MAX_SPRITES_FRAME_H32) { |
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162 context->sprite_index = 0; |
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163 return; |
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164 } |
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165 //TODO: Read from SAT cache rather than from VRAM |
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166 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9; |
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167 uint16_t address = context->sprite_index * 8 + sat_address; |
180
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168 line += 128; |
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169 uint16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & 0x1FF; |
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170 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * 8; |
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171 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height); |
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172 if (y <= line && line < (y + height)) { |
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173 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line); |
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174 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2]; |
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175 context->sprite_info_list[context->slot_counter].index = context->sprite_index; |
180
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176 context->sprite_info_list[context->slot_counter].y = y-128; |
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177 } |
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178 context->sprite_index = context->vdpmem[address+3] & 0x7F; |
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179 if (context->sprite_index && context->slot_counter) |
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180 { |
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181 address = context->sprite_index * 8 + sat_address; |
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182 y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) & 0x1FF; |
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183 height = ((context->vdpmem[address+2] & 0x3) + 1) * 8; |
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184 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height); |
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185 if (y <= line && line < (y + height)) { |
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186 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line); |
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187 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2]; |
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188 context->sprite_info_list[context->slot_counter].index = context->sprite_index; |
180
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189 context->sprite_info_list[context->slot_counter].y = y-128; |
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190 } |
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191 context->sprite_index = context->vdpmem[address+3] & 0x7F; |
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192 } |
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193 } |
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194 } |
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195 |
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196 void read_sprite_x(uint32_t line, vdp_context * context) |
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197 { |
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198 if (context->cur_slot >= context->slot_counter) { |
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199 if (context->sprite_draws) { |
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200 line += 1; |
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201 line &= 0xFF; |
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202 //in tiles |
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203 uint8_t width = ((context->sprite_info_list[context->cur_slot].size >> 2) & 0x3) + 1; |
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204 //in pixels |
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205 uint8_t height = ((context->sprite_info_list[context->cur_slot].size & 0x3) + 1) * 8; |
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206 uint16_t att_addr = ((context->regs[REG_SAT] & 0x7F) << 9) + context->sprite_info_list[context->cur_slot].index * 8 + 4; |
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207 uint16_t tileinfo = (context->vdpmem[att_addr] << 8) | context->vdpmem[att_addr+1]; |
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208 uint8_t pal_priority = (tileinfo >> 9) & 0x70; |
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209 uint8_t row; |
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210 if (tileinfo & MAP_BIT_V_FLIP) { |
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211 row = (context->sprite_info_list[context->cur_slot].y + height - 1) - line; |
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212 } else { |
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213 row = line-context->sprite_info_list[context->cur_slot].y; |
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214 } |
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215 uint16_t address = ((tileinfo & 0x7FF) << 5) + row * 4; |
323
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216 int16_t x = ((context->vdpmem[att_addr+ 2] & 0x3) << 8 | context->vdpmem[att_addr + 3]) & 0x1FF; |
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217 if (x) { |
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218 context->flags |= FLAG_CAN_MASK; |
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219 } else if(context->flags & (FLAG_CAN_MASK | FLAG_DOT_OFLOW)) { |
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220 context->flags |= FLAG_MASKED; |
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221 } |
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222 |
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223 context->flags &= ~FLAG_DOT_OFLOW; |
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224 int16_t i; |
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225 if (context->flags & FLAG_MASKED) { |
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226 for (i=0; i < width && context->sprite_draws; i++) { |
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227 --context->sprite_draws; |
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228 context->sprite_draw_list[context->sprite_draws].x_pos = -128; |
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229 } |
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230 } else { |
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231 x -= 128; |
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232 int16_t base_x = x; |
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233 int16_t dir; |
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234 if (tileinfo & MAP_BIT_H_FLIP) { |
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235 x += (width-1) * 8; |
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236 dir = -8; |
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237 } else { |
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238 dir = 8; |
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239 } |
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240 //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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241 for (i=0; i < width && context->sprite_draws; i++, x += dir) { |
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242 --context->sprite_draws; |
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243 context->sprite_draw_list[context->sprite_draws].address = address + i * height * 4; |
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244 context->sprite_draw_list[context->sprite_draws].x_pos = x; |
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245 context->sprite_draw_list[context->sprite_draws].pal_priority = pal_priority; |
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246 context->sprite_draw_list[context->sprite_draws].h_flip = (tileinfo & MAP_BIT_H_FLIP) ? 1 : 0; |
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247 } |
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248 } |
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249 if (i < width) { |
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250 context->flags |= FLAG_DOT_OFLOW; |
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251 } |
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252 context->cur_slot--; |
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253 } else { |
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254 context->flags |= FLAG_DOT_OFLOW; |
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255 } |
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256 } |
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257 } |
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258 |
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259 #define VRAM_READ 0 |
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260 #define VRAM_WRITE 1 |
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261 #define CRAM_READ 8 |
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262 #define CRAM_WRITE 3 |
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263 #define VSRAM_READ 4 |
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264 #define VSRAM_WRITE 5 |
75 | 265 #define DMA_START 0x20 |
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266 |
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267 void external_slot(vdp_context * context) |
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268 { |
75 | 269 //TODO: Figure out what happens if CD bit 4 is not set in DMA copy mode |
270 //TODO: Figure out what happens when CD:0-3 is not set to a write mode in DMA operations | |
271 //TODO: Figure out what happens if DMA gets disabled part way through a DMA fill or DMA copy | |
149
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272 if(context->flags & FLAG_DMA_RUN) { |
75 | 273 uint16_t dma_len; |
274 switch(context->regs[REG_DMASRC_H] & 0xC0) | |
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275 { |
75 | 276 //68K -> VDP |
277 case 0: | |
278 case 0x40: | |
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279 switch(context->dma_cd & 0xF) |
75 | 280 { |
281 case VRAM_WRITE: | |
282 if (context->flags & FLAG_DMA_PROG) { | |
283 context->vdpmem[context->address ^ 1] = context->dma_val; | |
284 context->flags &= ~FLAG_DMA_PROG; | |
285 } else { | |
286 context->dma_val = read_dma_value((context->regs[REG_DMASRC_H] << 16) | (context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L]); | |
287 context->vdpmem[context->address] = context->dma_val >> 8; | |
288 context->flags |= FLAG_DMA_PROG; | |
289 } | |
290 break; | |
291 case CRAM_WRITE: | |
292 context->cram[(context->address/2) & (CRAM_SIZE-1)] = read_dma_value((context->regs[REG_DMASRC_H] << 16) | (context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L]); | |
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293 //printf("CRAM DMA | %X set to %X from %X at %d\n", (context->address/2) & (CRAM_SIZE-1), context->cram[(context->address/2) & (CRAM_SIZE-1)], (context->regs[REG_DMASRC_H] << 17) | (context->regs[REG_DMASRC_M] << 9) | (context->regs[REG_DMASRC_L] << 1), context->cycles); |
75 | 294 break; |
295 case VSRAM_WRITE: | |
296 if (((context->address/2) & 63) < VSRAM_SIZE) { | |
297 context->vsram[(context->address/2) & 63] = read_dma_value((context->regs[REG_DMASRC_H] << 16) | (context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L]); | |
298 } | |
299 break; | |
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300 } |
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301 break; |
75 | 302 //Fill |
303 case 0x80: | |
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304 switch(context->dma_cd & 0xF) |
75 | 305 { |
306 case VRAM_WRITE: | |
307 //Charles MacDonald's VDP doc says that the low byte gets written first | |
142 | 308 context->vdpmem[context->address] = context->dma_val; |
309 context->dma_val = (context->dma_val << 8) | ((context->dma_val >> 8) & 0xFF); | |
75 | 310 break; |
311 case CRAM_WRITE: | |
312 context->cram[(context->address/2) & (CRAM_SIZE-1)] = context->dma_val; | |
313 break; | |
314 case VSRAM_WRITE: | |
315 if (((context->address/2) & 63) < VSRAM_SIZE) { | |
316 context->vsram[(context->address/2) & 63] = context->dma_val; | |
317 } | |
318 break; | |
319 } | |
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320 break; |
75 | 321 //Copy |
322 case 0xC0: | |
323 if (context->flags & FLAG_DMA_PROG) { | |
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324 switch(context->dma_cd & 0xF) |
75 | 325 { |
326 case VRAM_WRITE: | |
327 context->vdpmem[context->address] = context->dma_val; | |
328 break; | |
329 case CRAM_WRITE: | |
330 context->cram[(context->address/2) & (CRAM_SIZE-1)] = context->dma_val; | |
331 break; | |
332 case VSRAM_WRITE: | |
333 if (((context->address/2) & 63) < VSRAM_SIZE) { | |
334 context->vsram[(context->address/2) & 63] = context->dma_val; | |
335 } | |
336 break; | |
337 } | |
338 context->flags &= ~FLAG_DMA_PROG; | |
339 } else { | |
340 //I assume, that DMA copy copies from the same RAM as the destination | |
341 //but it's possible I'm mistaken | |
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342 switch(context->dma_cd & 0xF) |
75 | 343 { |
344 case VRAM_WRITE: | |
345 context->dma_val = context->vdpmem[(context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L]]; | |
346 break; | |
347 case CRAM_WRITE: | |
348 context->dma_val = context->cram[context->regs[REG_DMASRC_L] & (CRAM_SIZE-1)]; | |
349 break; | |
350 case VSRAM_WRITE: | |
351 if ((context->regs[REG_DMASRC_L] & 63) < VSRAM_SIZE) { | |
352 context->dma_val = context->vsram[context->regs[REG_DMASRC_L] & 63]; | |
353 } else { | |
354 context->dma_val = 0; | |
355 } | |
356 break; | |
357 } | |
358 context->flags |= FLAG_DMA_PROG; | |
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359 } |
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360 break; |
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361 } |
75 | 362 if (!(context->flags & FLAG_DMA_PROG)) { |
363 context->address += context->regs[REG_AUTOINC]; | |
364 context->regs[REG_DMASRC_L] += 1; | |
135 | 365 if (!context->regs[REG_DMASRC_L]) { |
366 context->regs[REG_DMASRC_M] += 1; | |
367 } | |
75 | 368 dma_len = ((context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L]) - 1; |
369 context->regs[REG_DMALEN_H] = dma_len >> 8; | |
370 context->regs[REG_DMALEN_L] = dma_len; | |
371 if (!dma_len) { | |
372 context->flags &= ~FLAG_DMA_RUN; | |
373 } | |
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374 } |
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375 } else { |
75 | 376 fifo_entry * start = (context->fifo_end - FIFO_SIZE); |
377 if (context->fifo_cur != start && start->cycle <= context->cycles) { | |
378 if ((context->regs[REG_MODE_2] & BIT_DMA_ENABLE) && (context->cd & DMA_START)) { | |
379 context->flags |= FLAG_DMA_RUN; | |
380 context->dma_val = start->value; | |
138 | 381 context->address = start->address; //undo auto-increment |
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382 context->dma_cd = context->cd; |
75 | 383 } else { |
138 | 384 switch (start->cd & 0xF) |
75 | 385 { |
386 case VRAM_WRITE: | |
387 if (start->partial) { | |
388 //printf("VRAM Write: %X to %X\n", start->value, context->address ^ 1); | |
138 | 389 context->vdpmem[start->address ^ 1] = start->value; |
75 | 390 } else { |
391 //printf("VRAM Write High: %X to %X\n", start->value >> 8, context->address); | |
138 | 392 context->vdpmem[start->address] = start->value >> 8; |
75 | 393 start->partial = 1; |
394 //skip auto-increment and removal of entry from fifo | |
395 return; | |
396 } | |
397 break; | |
398 case CRAM_WRITE: | |
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399 //printf("CRAM Write | %X to %X\n", start->value, (start->address/2) & (CRAM_SIZE-1)); |
138 | 400 context->cram[(start->address/2) & (CRAM_SIZE-1)] = start->value; |
75 | 401 break; |
402 case VSRAM_WRITE: | |
138 | 403 if (((start->address/2) & 63) < VSRAM_SIZE) { |
75 | 404 //printf("VSRAM Write: %X to %X\n", start->value, context->address); |
138 | 405 context->vsram[(start->address/2) & 63] = start->value; |
75 | 406 } |
407 break; | |
408 } | |
138 | 409 //context->address += context->regs[REG_AUTOINC]; |
75 | 410 } |
411 fifo_entry * cur = start+1; | |
412 if (cur < context->fifo_cur) { | |
413 memmove(start, cur, sizeof(fifo_entry) * (context->fifo_cur - cur)); | |
414 } | |
415 context->fifo_cur -= 1; | |
416 } else { | |
417 context->flags |= FLAG_UNUSED_SLOT; | |
418 } | |
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419 } |
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420 } |
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421 |
40 | 422 #define WINDOW_RIGHT 0x80 |
423 #define WINDOW_DOWN 0x80 | |
424 | |
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425 void read_map_scroll(uint16_t column, uint16_t vsram_off, uint32_t line, uint16_t address, uint16_t hscroll_val, vdp_context * context) |
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426 { |
40 | 427 if (!vsram_off) { |
428 uint16_t left_col, right_col; | |
429 if (context->regs[REG_WINDOW_H] & WINDOW_RIGHT) { | |
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430 left_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2; |
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diff
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431 right_col = 42; |
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40
diff
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432 } else { |
40 | 433 left_col = 0; |
434 right_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2; | |
435 if (right_col) { | |
436 right_col += 2; | |
437 } | |
438 } | |
41
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More correct window support, maybe
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40
diff
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|
439 uint16_t top_line, bottom_line; |
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40
diff
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|
440 if (context->regs[REG_WINDOW_V] & WINDOW_DOWN) { |
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40
diff
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|
441 top_line = (context->regs[REG_WINDOW_V] & 0x1F) * 8; |
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diff
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|
442 bottom_line = 241; |
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40
diff
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443 } else { |
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40
diff
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|
444 top_line = 0; |
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diff
changeset
|
445 bottom_line = (context->regs[REG_WINDOW_V] & 0x1F) * 8; |
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More correct window support, maybe
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40
diff
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|
446 } |
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40
diff
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|
447 if ((column >= left_col && column < right_col) || (line >= top_line && line < bottom_line)) { |
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40
diff
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|
448 uint16_t address = context->regs[REG_WINDOW] << 10; |
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40
diff
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|
449 uint16_t line_offset, offset, mask; |
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40
diff
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|
450 if (context->latched_mode & BIT_H40) { |
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parents:
40
diff
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|
451 address &= 0xF000; |
42
6653e67a6811
Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
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41
diff
changeset
|
452 line_offset = (((line) / 8) * 64 * 2) & 0xFFF; |
41
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40
diff
changeset
|
453 mask = 0x7F; |
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40
diff
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|
454 |
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diff
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455 } else { |
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40
diff
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|
456 address &= 0xF800; |
42
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Mike Pavone <pavone@retrodev.com>
parents:
41
diff
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|
457 line_offset = (((line) / 8) * 32 * 2) & 0xFFF; |
41
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40
diff
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458 mask = 0x3F; |
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459 } |
42
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Mike Pavone <pavone@retrodev.com>
parents:
41
diff
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|
460 offset = address + line_offset + (((column - 2) * 2) & mask); |
41
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40
diff
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|
461 context->col_1 = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
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43
diff
changeset
|
462 //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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Mike Pavone <pavone@retrodev.com>
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41
diff
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463 offset = address + line_offset + (((column - 1) * 2) & mask); |
41
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diff
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464 context->col_2 = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
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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|
465 context->v_offset = (line) & 0x7; |
41
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40
diff
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466 context->flags |= FLAG_WINDOW; |
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diff
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467 return; |
40 | 468 } |
469 context->flags &= ~FLAG_WINDOW; | |
470 } | |
20
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471 uint16_t vscroll; |
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472 switch(context->regs[REG_SCROLL] & 0x30) |
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473 { |
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474 case 0: |
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475 vscroll = 0xFF; |
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476 break; |
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|
477 case 0x10: |
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478 vscroll = 0x1FF; |
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479 break; |
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480 case 0x20: |
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481 //TODO: Verify this behavior |
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482 vscroll = 0; |
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483 break; |
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484 case 0x30: |
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485 vscroll = 0x3FF; |
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486 break; |
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487 } |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
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323
diff
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|
488 vscroll &= (context->vsram[(context->regs[REG_MODE_3] & BIT_VSCROLL ? column : 0) + vsram_off] + line); |
20
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489 context->v_offset = vscroll & 0x7; |
26
a7c2b92d8056
Fix management of context->sprite_draws so the sprite layer only draws when it should
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parents:
25
diff
changeset
|
490 //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); |
20
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491 vscroll /= 8; |
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492 uint16_t hscroll_mask; |
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493 uint16_t v_mul; |
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494 switch(context->regs[REG_SCROLL] & 0x3) |
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diff
changeset
|
495 { |
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|
496 case 0: |
108
1a551a85cb06
Fix horizontal mask values for scroll plane map address calculation
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87
diff
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|
497 hscroll_mask = 0x1F; |
20
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498 v_mul = 64; |
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499 break; |
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|
500 case 0x1: |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
501 hscroll_mask = 0x3F; |
20
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502 v_mul = 128; |
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changeset
|
503 break; |
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|
504 case 0x2: |
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diff
changeset
|
505 //TODO: Verify this behavior |
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diff
changeset
|
506 hscroll_mask = 0; |
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diff
changeset
|
507 v_mul = 0; |
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diff
changeset
|
508 break; |
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diff
changeset
|
509 case 0x3: |
108
1a551a85cb06
Fix horizontal mask values for scroll plane map address calculation
Mike Pavone <pavone@retrodev.com>
parents:
87
diff
changeset
|
510 hscroll_mask = 0x7F; |
20
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511 v_mul = 256; |
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changeset
|
512 break; |
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diff
changeset
|
513 } |
28 | 514 uint16_t hscroll, offset; |
515 for (int i = 0; i < 2; i++) { | |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
516 hscroll = (column - 2 + i - ((hscroll_val/8) & 0xFFFE)) & hscroll_mask; |
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
517 offset = address + ((vscroll * v_mul + hscroll*2) & 0x1FFF); |
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
518 //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 | 519 uint16_t col_val = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1]; |
520 if (i) { | |
521 context->col_2 = col_val; | |
522 } else { | |
523 context->col_1 = col_val; | |
524 } | |
525 } | |
20
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diff
changeset
|
526 } |
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diff
changeset
|
527 |
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diff
changeset
|
528 void read_map_scroll_a(uint16_t column, uint32_t line, vdp_context * context) |
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diff
changeset
|
529 { |
25
4d0c20ad815a
Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents:
24
diff
changeset
|
530 read_map_scroll(column, 0, line, (context->regs[REG_SCROLL_A] & 0x38) << 10, context->hscroll_a, context); |
20
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parents:
diff
changeset
|
531 } |
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parents:
diff
changeset
|
532 |
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diff
changeset
|
533 void read_map_scroll_b(uint16_t column, uint32_t line, vdp_context * context) |
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parents:
diff
changeset
|
534 { |
25
4d0c20ad815a
Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents:
24
diff
changeset
|
535 read_map_scroll(column, 1, line, (context->regs[REG_SCROLL_B] & 0x7) << 13, context->hscroll_b, context); |
20
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diff
changeset
|
536 } |
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diff
changeset
|
537 |
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diff
changeset
|
538 void render_map(uint16_t col, uint8_t * tmp_buf, vdp_context * context) |
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diff
changeset
|
539 { |
42
6653e67a6811
Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents:
41
diff
changeset
|
540 uint16_t address = ((col & 0x7FF) << 5); |
20
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parents:
diff
changeset
|
541 if (col & MAP_BIT_V_FLIP) { |
43
3fc57e1a2c56
Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents:
42
diff
changeset
|
542 address += 28 - 4 * context->v_offset; |
20
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diff
changeset
|
543 } else { |
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diff
changeset
|
544 address += 4 * context->v_offset; |
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diff
changeset
|
545 } |
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diff
changeset
|
546 uint16_t pal_priority = (col >> 9) & 0x70; |
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diff
changeset
|
547 int32_t dir; |
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parents:
diff
changeset
|
548 if (col & MAP_BIT_H_FLIP) { |
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parents:
diff
changeset
|
549 tmp_buf += 7; |
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diff
changeset
|
550 dir = -1; |
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parents:
diff
changeset
|
551 } else { |
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diff
changeset
|
552 dir = 1; |
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parents:
diff
changeset
|
553 } |
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diff
changeset
|
554 for (uint32_t i=0; i < 4; i++, address++) |
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parents:
diff
changeset
|
555 { |
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parents:
diff
changeset
|
556 *tmp_buf = pal_priority | (context->vdpmem[address] >> 4); |
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parents:
diff
changeset
|
557 tmp_buf += dir; |
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parents:
diff
changeset
|
558 *tmp_buf = pal_priority | (context->vdpmem[address] & 0xF); |
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parents:
diff
changeset
|
559 tmp_buf += dir; |
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parents:
diff
changeset
|
560 } |
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parents:
diff
changeset
|
561 } |
f664eeb55cb4
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
562 |
f664eeb55cb4
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parents:
diff
changeset
|
563 void render_map_1(vdp_context * context) |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
564 { |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
565 render_map(context->col_1, context->tmp_buf_a+SCROLL_BUFFER_DRAW, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
566 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
567 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
568 void render_map_2(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
569 { |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
570 render_map(context->col_2, context->tmp_buf_a+SCROLL_BUFFER_DRAW+8, context); |
20
f664eeb55cb4
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
571 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
572 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
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diff
changeset
|
573 void render_map_3(vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
574 { |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
575 render_map(context->col_1, context->tmp_buf_b+SCROLL_BUFFER_DRAW, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
576 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
577 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
578 void render_map_output(uint32_t line, int32_t col, vdp_context * context) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
579 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
580 if (line >= 240) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
581 return; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
582 } |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
583 render_map(context->col_2, context->tmp_buf_b+SCROLL_BUFFER_DRAW+8, context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
584 uint16_t *dst, *end; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
585 uint8_t *sprite_buf, *plane_a, *plane_b; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
586 if (col) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
587 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
588 col-=2; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
589 dst = context->framebuf + line * 320 + col * 8; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
590 sprite_buf = context->linebuf + col * 8; |
43
3fc57e1a2c56
Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents:
42
diff
changeset
|
591 uint16_t a_src; |
40 | 592 if (context->flags & FLAG_WINDOW) { |
593 plane_a = context->tmp_buf_a + SCROLL_BUFFER_DRAW; | |
43
3fc57e1a2c56
Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents:
42
diff
changeset
|
594 a_src = FBUF_SRC_W; |
40 | 595 } else { |
596 plane_a = context->tmp_buf_a + SCROLL_BUFFER_DRAW - (context->hscroll_a & 0xF); | |
43
3fc57e1a2c56
Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents:
42
diff
changeset
|
597 a_src = FBUF_SRC_A; |
40 | 598 } |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
599 plane_b = context->tmp_buf_b + SCROLL_BUFFER_DRAW - (context->hscroll_b & 0xF); |
30 | 600 end = dst + 16; |
43
3fc57e1a2c56
Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents:
42
diff
changeset
|
601 uint16_t src; |
30 | 602 //printf("A | tmp_buf offset: %d\n", 8 - (context->hscroll_a & 0x7)); |
230
d3266cee02c9
Implemented shadow hilight mode.
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191
diff
changeset
|
603 |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
604 if (context->regs[REG_MODE_4] & BIT_HILIGHT) { |
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Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
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191
diff
changeset
|
605 for (; dst < end; ++plane_a, ++plane_b, ++sprite_buf, ++dst) { |
d3266cee02c9
Implemented shadow hilight mode.
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191
diff
changeset
|
606 uint8_t pixel; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
607 |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
608 src = 0; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
609 uint8_t sprite_color = *sprite_buf & 0x3F; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
610 if (sprite_color == 0x3E || sprite_color == 0x3F) { |
232
54873acb982e
Shadow and higlight operators were switched
Mike Pavone <pavone@retrodev.com>
parents:
230
diff
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|
611 if (sprite_color == 0x3F) { |
54873acb982e
Shadow and higlight operators were switched
Mike Pavone <pavone@retrodev.com>
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230
diff
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|
612 src = FBUF_SHADOW; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
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191
diff
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|
613 } else { |
232
54873acb982e
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Mike Pavone <pavone@retrodev.com>
parents:
230
diff
changeset
|
614 src = FBUF_HILIGHT; |
230
d3266cee02c9
Implemented shadow hilight mode.
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191
diff
changeset
|
615 } |
d3266cee02c9
Implemented shadow hilight mode.
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191
diff
changeset
|
616 if (*plane_a & BUF_BIT_PRIORITY && *plane_a & 0xF) { |
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Mike Pavone <pavone@retrodev.com>
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191
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|
617 pixel = *plane_a; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
618 src |= a_src; |
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Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
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191
diff
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|
619 } else if (*plane_b & BUF_BIT_PRIORITY && *plane_b & 0xF) { |
d3266cee02c9
Implemented shadow hilight mode.
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191
diff
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|
620 pixel = *plane_b; |
d3266cee02c9
Implemented shadow hilight mode.
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diff
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|
621 src |= FBUF_SRC_B; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
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191
diff
changeset
|
622 } else if (*plane_a & 0xF) { |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
623 pixel = *plane_a; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
624 src |= a_src; |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
625 } else if (*plane_b & 0xF){ |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
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191
diff
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|
626 pixel = *plane_b; |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
627 src |= FBUF_SRC_B; |
d3266cee02c9
Implemented shadow hilight mode.
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191
diff
changeset
|
628 } else { |
d3266cee02c9
Implemented shadow hilight mode.
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191
diff
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|
629 pixel = context->regs[REG_BG_COLOR] & 0x3F; |
d3266cee02c9
Implemented shadow hilight mode.
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191
diff
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|
630 src |= FBUF_SRC_BG; |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
631 } |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
632 } else { |
d3266cee02c9
Implemented shadow hilight mode.
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191
diff
changeset
|
633 if (*sprite_buf & BUF_BIT_PRIORITY && *sprite_buf & 0xF) { |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
634 pixel = *sprite_buf; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
635 src = FBUF_SRC_S; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
636 } else if (*plane_a & BUF_BIT_PRIORITY && *plane_a & 0xF) { |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
637 pixel = *plane_a; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
638 src = a_src; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
639 } else if (*plane_b & BUF_BIT_PRIORITY && *plane_b & 0xF) { |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
640 pixel = *plane_b; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
641 src = FBUF_SRC_B; |
233
9d10669f2579
Less broken implementation of shadow/highlight
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232
diff
changeset
|
642 } else { |
9d10669f2579
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232
diff
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|
643 if (!(*plane_a & BUF_BIT_PRIORITY || *plane_a & BUF_BIT_PRIORITY)) { |
9d10669f2579
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232
diff
changeset
|
644 src = FBUF_SHADOW; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
645 } |
233
9d10669f2579
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232
diff
changeset
|
646 if (*sprite_buf & 0xF) { |
9d10669f2579
Less broken implementation of shadow/highlight
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parents:
232
diff
changeset
|
647 pixel = *sprite_buf; |
9d10669f2579
Less broken implementation of shadow/highlight
Mike Pavone <pavone@retrodev.com>
parents:
232
diff
changeset
|
648 if (*sprite_buf & 0xF == 0xE) { |
9d10669f2579
Less broken implementation of shadow/highlight
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parents:
232
diff
changeset
|
649 src = FBUF_SRC_S; |
9d10669f2579
Less broken implementation of shadow/highlight
Mike Pavone <pavone@retrodev.com>
parents:
232
diff
changeset
|
650 } else { |
9d10669f2579
Less broken implementation of shadow/highlight
Mike Pavone <pavone@retrodev.com>
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232
diff
changeset
|
651 src |= FBUF_SRC_S; |
9d10669f2579
Less broken implementation of shadow/highlight
Mike Pavone <pavone@retrodev.com>
parents:
232
diff
changeset
|
652 } |
9d10669f2579
Less broken implementation of shadow/highlight
Mike Pavone <pavone@retrodev.com>
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232
diff
changeset
|
653 } else if (*plane_a & 0xF) { |
9d10669f2579
Less broken implementation of shadow/highlight
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232
diff
changeset
|
654 pixel = *plane_a; |
9d10669f2579
Less broken implementation of shadow/highlight
Mike Pavone <pavone@retrodev.com>
parents:
232
diff
changeset
|
655 src |= a_src; |
9d10669f2579
Less broken implementation of shadow/highlight
Mike Pavone <pavone@retrodev.com>
parents:
232
diff
changeset
|
656 } else if (*plane_b & 0xF){ |
9d10669f2579
Less broken implementation of shadow/highlight
Mike Pavone <pavone@retrodev.com>
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232
diff
changeset
|
657 pixel = *plane_b; |
9d10669f2579
Less broken implementation of shadow/highlight
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parents:
232
diff
changeset
|
658 src |= FBUF_SRC_B; |
9d10669f2579
Less broken implementation of shadow/highlight
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parents:
232
diff
changeset
|
659 } else { |
9d10669f2579
Less broken implementation of shadow/highlight
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232
diff
changeset
|
660 pixel = context->regs[REG_BG_COLOR] & 0x3F; |
9d10669f2579
Less broken implementation of shadow/highlight
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parents:
232
diff
changeset
|
661 src |= FBUF_SRC_BG; |
9d10669f2579
Less broken implementation of shadow/highlight
Mike Pavone <pavone@retrodev.com>
parents:
232
diff
changeset
|
662 } |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
663 } |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
664 } |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
665 *dst = (context->cram[pixel & 0x3F] & 0xEEE) | ((pixel & BUF_BIT_PRIORITY) ? FBUF_BIT_PRIORITY : 0) | src; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
666 } |
230
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
667 } else { |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
668 for (; dst < end; ++plane_a, ++plane_b, ++sprite_buf, ++dst) { |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
669 uint8_t pixel; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
670 if (*sprite_buf & BUF_BIT_PRIORITY && *sprite_buf & 0xF) { |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
671 pixel = *sprite_buf; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
672 src = FBUF_SRC_S; |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
673 } else if (*plane_a & BUF_BIT_PRIORITY && *plane_a & 0xF) { |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
674 pixel = *plane_a; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
675 src = a_src; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
676 } else if (*plane_b & BUF_BIT_PRIORITY && *plane_b & 0xF) { |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
677 pixel = *plane_b; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
678 src = FBUF_SRC_B; |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
679 } else if (*sprite_buf & 0xF) { |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
680 pixel = *sprite_buf; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
681 src = FBUF_SRC_S; |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
682 } else if (*plane_a & 0xF) { |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
683 pixel = *plane_a; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
684 src = a_src; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
685 } else if (*plane_b & 0xF){ |
d3266cee02c9
Implemented shadow hilight mode.
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parents:
191
diff
changeset
|
686 pixel = *plane_b; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
687 src = FBUF_SRC_B; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
688 } else { |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
689 pixel = context->regs[REG_BG_COLOR] & 0x3F; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
690 src = FBUF_SRC_BG; |
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
691 } |
291
eea3b118940d
Make sure all rendering operations mask CRAM with 0xEEE before using it
Mike Pavone <pavone@retrodev.com>
parents:
233
diff
changeset
|
692 *dst = (context->cram[pixel & 0x3F] & 0xEEE) | ((pixel & BUF_BIT_PRIORITY) ? FBUF_BIT_PRIORITY : 0) | src; |
230
d3266cee02c9
Implemented shadow hilight mode.
Mike Pavone <pavone@retrodev.com>
parents:
191
diff
changeset
|
693 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
694 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
695 } else { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
696 //dst = context->framebuf + line * 320; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
697 //sprite_buf = context->linebuf + col * 8; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
698 //plane_a = context->tmp_buf_a + 16 - (context->hscroll_a & 0x7); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
699 //plane_b = context->tmp_buf_b + 16 - (context->hscroll_b & 0x7); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
700 //end = dst + 8; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
701 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
702 |
40 | 703 uint16_t remaining; |
704 if (!(context->flags & FLAG_WINDOW)) { | |
705 remaining = context->hscroll_a & 0xF; | |
706 memcpy(context->tmp_buf_a + SCROLL_BUFFER_DRAW - remaining, context->tmp_buf_a + SCROLL_BUFFER_SIZE - remaining, remaining); | |
707 } | |
39
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
708 remaining = context->hscroll_b & 0xF; |
3c69319269ef
Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents:
38
diff
changeset
|
709 memcpy(context->tmp_buf_b + SCROLL_BUFFER_DRAW - remaining, context->tmp_buf_b + SCROLL_BUFFER_SIZE - remaining, remaining); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
710 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
711 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
712 #define COLUMN_RENDER_BLOCK(column, startcyc) \ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
713 case startcyc:\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
714 read_map_scroll_a(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
715 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
716 case (startcyc+1):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
717 external_slot(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
718 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
719 case (startcyc+2):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
720 render_map_1(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
721 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
722 case (startcyc+3):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
723 render_map_2(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
724 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
725 case (startcyc+4):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
726 read_map_scroll_b(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
727 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
728 case (startcyc+5):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
729 read_sprite_x(line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
730 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
731 case (startcyc+6):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
732 render_map_3(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
733 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
734 case (startcyc+7):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
735 render_map_output(line, column, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
736 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
737 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
738 #define COLUMN_RENDER_BLOCK_REFRESH(column, startcyc) \ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
739 case startcyc:\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
740 read_map_scroll_a(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
741 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
742 case (startcyc+1):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
743 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
744 case (startcyc+2):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
745 render_map_1(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
746 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
747 case (startcyc+3):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
748 render_map_2(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
749 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
750 case (startcyc+4):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
751 read_map_scroll_b(column, line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
752 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
753 case (startcyc+5):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
754 read_sprite_x(line, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
755 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
756 case (startcyc+6):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
757 render_map_3(context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
758 break;\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
759 case (startcyc+7):\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
760 render_map_output(line, column, context);\ |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
761 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
762 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
763 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
|
764 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
765 uint16_t address; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
766 uint32_t mask; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
767 switch(linecyc) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
768 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
769 //sprite render to line buffer starts |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
770 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
|
771 context->cur_slot = MAX_DRAWS-1; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
772 memset(context->linebuf, 0, LINEBUF_SIZE); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
773 case 1: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
774 case 2: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
775 case 3: |
329
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
776 if (line == 0xFF) { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
777 external_slot(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
778 } else { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
779 render_sprite_cells(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
780 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
781 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
782 //sprite attribute table scan starts |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
783 case 4: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
784 render_sprite_cells( context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
785 context->sprite_index = 0x80; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
786 context->slot_counter = MAX_SPRITES_LINE; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
787 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
788 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
789 case 5: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
790 case 6: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
791 case 7: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
792 case 8: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
793 case 9: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
794 case 10: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
795 case 11: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
796 case 12: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
797 case 13: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
798 case 14: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
799 case 15: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
800 case 16: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
801 case 17: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
802 case 18: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
803 case 19: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
804 case 20: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
805 //!HSYNC asserted |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
806 case 21: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
807 case 22: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
808 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
809 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
810 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
811 case 23: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
812 external_slot(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
813 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
814 case 24: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
815 case 25: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
816 case 26: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
817 case 27: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
818 case 28: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
819 case 29: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
820 case 30: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
821 case 31: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
822 case 32: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
823 case 33: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
824 case 34: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
825 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
826 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
827 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
828 case 35: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
829 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
830 mask = 0; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
831 if (context->regs[REG_MODE_3] & 0x2) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
832 mask |= 0xF8; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
833 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
834 if (context->regs[REG_MODE_3] & 0x1) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
835 mask |= 0x7; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
836 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
837 line &= mask; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
838 address += line * 4; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
839 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
|
840 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
|
841 //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
|
842 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
843 case 36: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
844 //!HSYNC high |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
845 case 37: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
846 case 38: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
847 case 39: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
848 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
849 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
850 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
851 case 40: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
852 read_map_scroll_a(0, line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
853 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
854 case 41: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
855 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
856 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
857 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
858 case 42: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
859 render_map_1(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
860 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
861 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
862 case 43: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
863 render_map_2(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
864 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
865 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
866 case 44: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
867 read_map_scroll_b(0, line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
868 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
869 case 45: |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
870 render_sprite_cells(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
871 scan_sprite_table(line, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
872 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
873 case 46: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
874 render_map_3(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
875 scan_sprite_table(line, context);//Just a guess |
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 47: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
878 render_map_output(line, 0, context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
879 scan_sprite_table(line, context);//Just a guess |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
880 //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
|
881 //filled rather than the number of available slots |
21
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
882 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; |
72ce60cb1711
Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents:
20
diff
changeset
|
883 context->cur_slot = MAX_SPRITES_LINE-1; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
884 context->sprite_draws = MAX_DRAWS; |
36
04672c060062
Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents:
35
diff
changeset
|
885 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
886 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
887 COLUMN_RENDER_BLOCK(2, 48) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
888 COLUMN_RENDER_BLOCK(4, 56) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
889 COLUMN_RENDER_BLOCK(6, 64) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
890 COLUMN_RENDER_BLOCK_REFRESH(8, 72) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
891 COLUMN_RENDER_BLOCK(10, 80) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
892 COLUMN_RENDER_BLOCK(12, 88) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
893 COLUMN_RENDER_BLOCK(14, 96) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
894 COLUMN_RENDER_BLOCK_REFRESH(16, 104) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
895 COLUMN_RENDER_BLOCK(18, 112) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
896 COLUMN_RENDER_BLOCK(20, 120) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
897 COLUMN_RENDER_BLOCK(22, 128) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
898 COLUMN_RENDER_BLOCK_REFRESH(24, 136) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
899 COLUMN_RENDER_BLOCK(26, 144) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
900 COLUMN_RENDER_BLOCK(28, 152) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
901 COLUMN_RENDER_BLOCK(30, 160) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
902 COLUMN_RENDER_BLOCK_REFRESH(32, 168) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
903 COLUMN_RENDER_BLOCK(34, 176) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
904 COLUMN_RENDER_BLOCK(36, 184) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
905 COLUMN_RENDER_BLOCK(38, 192) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
906 COLUMN_RENDER_BLOCK_REFRESH(40, 200) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
907 case 208: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
908 case 209: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
909 external_slot(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
910 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
911 default: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
912 //leftovers from HSYNC clock change nonsense |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
913 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
914 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
915 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
916 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
917 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
|
918 { |
37 | 919 uint16_t address; |
920 uint32_t mask; | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
921 switch(linecyc) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
922 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
923 //sprite render to line buffer starts |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
924 case 0: |
37 | 925 context->cur_slot = MAX_DRAWS_H32-1; |
926 memset(context->linebuf, 0, LINEBUF_SIZE); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
927 case 1: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
928 case 2: |
37 | 929 case 3: |
329
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
930 if (line == 0xFF) { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
931 external_slot(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
932 } else { |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
933 render_sprite_cells(context); |
fd5f6577db9b
Implement first line/last line weirdness in VDP
Mike Pavone <pavone@retrodev.com>
parents:
328
diff
changeset
|
934 } |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
935 break; |
37 | 936 //sprite attribute table scan starts |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
937 case 4: |
37 | 938 render_sprite_cells( context); |
939 context->sprite_index = 0x80; | |
940 context->slot_counter = MAX_SPRITES_LINE_H32; | |
941 scan_sprite_table(line, context); | |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
942 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
943 case 5: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
944 case 6: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
945 case 7: |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
946 case 8: |
f664eeb55cb4
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parents:
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|
947 case 9: |
f664eeb55cb4
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diff
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|
948 case 10: |
f664eeb55cb4
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diff
changeset
|
949 case 11: |
f664eeb55cb4
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diff
changeset
|
950 case 12: |
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diff
changeset
|
951 case 13: |
37 | 952 render_sprite_cells(context); |
953 scan_sprite_table(line, context); | |
20
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954 case 14: |
37 | 955 external_slot(context); |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
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diff
changeset
|
956 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
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parents:
diff
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|
957 case 15: |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
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diff
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|
958 case 16: |
f664eeb55cb4
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parents:
diff
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|
959 case 17: |
f664eeb55cb4
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|
960 case 18: |
f664eeb55cb4
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|
961 case 19: |
37 | 962 //HSYNC start |
20
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parents:
diff
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|
963 case 20: |
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parents:
diff
changeset
|
964 case 21: |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
965 case 22: |
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parents:
diff
changeset
|
966 case 23: |
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parents:
diff
changeset
|
967 case 24: |
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parents:
diff
changeset
|
968 case 25: |
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parents:
diff
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|
969 case 26: |
37 | 970 render_sprite_cells(context); |
971 scan_sprite_table(line, context); | |
20
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diff
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|
972 break; |
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|
973 case 27: |
37 | 974 external_slot(context); |
20
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parents:
diff
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|
975 break; |
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|
976 case 28: |
37 | 977 address = (context->regs[REG_HSCROLL] & 0x3F) << 10; |
978 mask = 0; | |
979 if (context->regs[REG_MODE_3] & 0x2) { | |
980 mask |= 0xF8; | |
981 } | |
982 if (context->regs[REG_MODE_3] & 0x1) { | |
983 mask |= 0x7; | |
984 } | |
985 line &= mask; | |
986 address += line * 4; | |
987 context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1]; | |
988 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3]; | |
989 //printf("%d: HScroll A: %d, HScroll B: %d\n", line, context->hscroll_a, context->hscroll_b); | |
20
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diff
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|
990 break; |
f664eeb55cb4
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Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
991 case 29: |
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Mike Pavone <pavone@retrodev.com>
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diff
changeset
|
992 case 30: |
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|
993 case 31: |
37 | 994 case 32: |
995 render_sprite_cells(context); | |
996 scan_sprite_table(line, context); | |
20
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diff
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|
997 break; |
37 | 998 //!HSYNC high |
20
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diff
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|
999 case 33: |
37 | 1000 read_map_scroll_a(0, line, context); |
20
f664eeb55cb4
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diff
changeset
|
1001 break; |
f664eeb55cb4
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1002 case 34: |
37 | 1003 render_sprite_cells(context); |
1004 scan_sprite_table(line, context); | |
20
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parents:
diff
changeset
|
1005 break; |
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Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
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diff
changeset
|
1006 case 35: |
37 | 1007 render_map_1(context); |
1008 scan_sprite_table(line, context);//Just a guess | |
20
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parents:
diff
changeset
|
1009 break; |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1010 case 36: |
37 | 1011 render_map_2(context); |
1012 scan_sprite_table(line, context);//Just a guess | |
20
f664eeb55cb4
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parents:
diff
changeset
|
1013 break; |
f664eeb55cb4
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parents:
diff
changeset
|
1014 case 37: |
37 | 1015 read_map_scroll_b(0, line, context); |
20
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parents:
diff
changeset
|
1016 break; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1017 case 38: |
37 | 1018 render_sprite_cells(context); |
1019 scan_sprite_table(line, context); | |
20
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parents:
diff
changeset
|
1020 break; |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1021 case 39: |
37 | 1022 render_map_3(context); |
1023 scan_sprite_table(line, context);//Just a guess | |
20
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diff
changeset
|
1024 break; |
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diff
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|
1025 case 40: |
37 | 1026 render_map_output(line, 0, context); |
1027 scan_sprite_table(line, context);//Just a guess | |
1028 //reverse context slot counter so it counts the number of sprite slots | |
1029 //filled rather than the number of available slots | |
1030 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter; | |
1031 context->cur_slot = MAX_SPRITES_LINE_H32-1; | |
1032 context->sprite_draws = MAX_DRAWS_H32; | |
1033 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED); | |
20
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parents:
diff
changeset
|
1034 break; |
37 | 1035 COLUMN_RENDER_BLOCK(2, 41) |
1036 COLUMN_RENDER_BLOCK(4, 49) | |
1037 COLUMN_RENDER_BLOCK(6, 57) | |
1038 COLUMN_RENDER_BLOCK_REFRESH(8, 65) | |
1039 COLUMN_RENDER_BLOCK(10, 73) | |
1040 COLUMN_RENDER_BLOCK(12, 81) | |
1041 COLUMN_RENDER_BLOCK(14, 89) | |
1042 COLUMN_RENDER_BLOCK_REFRESH(16, 97) | |
1043 COLUMN_RENDER_BLOCK(18, 105) | |
1044 COLUMN_RENDER_BLOCK(20, 113) | |
1045 COLUMN_RENDER_BLOCK(22, 121) | |
1046 COLUMN_RENDER_BLOCK_REFRESH(24, 129) | |
1047 COLUMN_RENDER_BLOCK(26, 137) | |
1048 COLUMN_RENDER_BLOCK(28, 145) | |
1049 COLUMN_RENDER_BLOCK(30, 153) | |
1050 COLUMN_RENDER_BLOCK_REFRESH(32, 161) | |
20
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diff
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|
1051 case 169: |
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parents:
diff
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|
1052 case 170: |
37 | 1053 external_slot(context); |
20
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parents:
diff
changeset
|
1054 break; |
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parents:
diff
changeset
|
1055 } |
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diff
changeset
|
1056 } |
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Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
1057 void latch_mode(vdp_context * context) |
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Mostly broken VDP core and savestate viewer
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parents:
diff
changeset
|
1058 { |
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diff
changeset
|
1059 context->latched_mode = (context->regs[REG_MODE_4] & 0x81) | (context->regs[REG_MODE_2] & BIT_PAL); |
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parents:
diff
changeset
|
1060 } |
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diff
changeset
|
1061 |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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43
diff
changeset
|
1062 int is_refresh(vdp_context * context) |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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parents:
43
diff
changeset
|
1063 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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parents:
43
diff
changeset
|
1064 uint32_t linecyc = context->cycles % MCLKS_LINE; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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43
diff
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|
1065 if (context->latched_mode & BIT_H40) { |
3b79cbcf6846
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43
diff
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|
1066 linecyc = linecyc/16; |
189
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Fix background rendering when display is off and improve refresh cycle emulation so that direct color DMA demos work
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diff
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|
1067 //TODO: Figure out the exact behavior that reduces DMA slots for direct color DMA demos |
806c3b7a6f2a
Fix background rendering when display is off and improve refresh cycle emulation so that direct color DMA demos work
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diff
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|
1068 return (linecyc == 37 || linecyc == 69 || linecyc == 102 || linecyc == 133 || linecyc == 165 || linecyc == 197 || linecyc >= 210 || (linecyc < 6 && (context->flags & FLAG_DMA_RUN) && ((context->dma_cd & 0xF) == CRAM_WRITE))); |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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43
diff
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|
1069 } else { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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43
diff
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|
1070 linecyc = linecyc/20; |
189
806c3b7a6f2a
Fix background rendering when display is off and improve refresh cycle emulation so that direct color DMA demos work
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180
diff
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|
1071 //TODO: Figure out which slots are refresh when display is off in 32-cell mode |
191
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Fixes for direct color dma stuff
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190
diff
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|
1072 //These numbers are guesses based on H40 numbers |
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Fixes for direct color dma stuff
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190
diff
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|
1073 return (linecyc == 24 || linecyc == 56 || linecyc == 88 || linecyc == 120 || linecyc == 152 || (linecyc < 5 && (context->flags & FLAG_DMA_RUN) && ((context->dma_cd & 0xF) == CRAM_WRITE))); |
189
806c3b7a6f2a
Fix background rendering when display is off and improve refresh cycle emulation so that direct color DMA demos work
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diff
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|
1074 //The numbers below are the refresh slots during active display |
191
1b4d856b067a
Fixes for direct color dma stuff
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190
diff
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|
1075 //return (linecyc == 66 || linecyc == 98 || linecyc == 130 || linecyc == 162); |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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43
diff
changeset
|
1076 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1077 } |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1078 |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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parents:
43
diff
changeset
|
1079 void check_render_bg(vdp_context * context, int32_t line) |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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parents:
43
diff
changeset
|
1080 { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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parents:
43
diff
changeset
|
1081 if (line > 0) { |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1082 line -= 1; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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parents:
43
diff
changeset
|
1083 uint16_t * start = NULL, *end = NULL; |
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
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parents:
43
diff
changeset
|
1084 uint32_t linecyc = (context->cycles % MCLKS_LINE); |
3b79cbcf6846
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parents:
43
diff
changeset
|
1085 if (context->latched_mode & BIT_H40) { |
3b79cbcf6846
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parents:
43
diff
changeset
|
1086 linecyc /= 16; |
189
806c3b7a6f2a
Fix background rendering when display is off and improve refresh cycle emulation so that direct color DMA demos work
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180
diff
changeset
|
1087 if (linecyc >= 50 && linecyc < 210) { |
190
4cb8a3891e26
Small fix to bg drawing that yields the proper res for direct color DMA
Mike Pavone <pavone@retrodev.com>
parents:
189
diff
changeset
|
1088 uint32_t x = (linecyc-50)*2; |
54
3b79cbcf6846
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43
diff
changeset
|
1089 start = context->framebuf + line * 320 + x; |
190
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Small fix to bg drawing that yields the proper res for direct color DMA
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parents:
189
diff
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|
1090 end = start + 2; |
54
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43
diff
changeset
|
1091 } |
3b79cbcf6846
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43
diff
changeset
|
1092 } else { |
3b79cbcf6846
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43
diff
changeset
|
1093 linecyc /= 20; |
189
806c3b7a6f2a
Fix background rendering when display is off and improve refresh cycle emulation so that direct color DMA demos work
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parents:
180
diff
changeset
|
1094 if (linecyc >= 43 && linecyc < 171) { |
190
4cb8a3891e26
Small fix to bg drawing that yields the proper res for direct color DMA
Mike Pavone <pavone@retrodev.com>
parents:
189
diff
changeset
|
1095 uint32_t x = (linecyc-43)*2; |
191
1b4d856b067a
Fixes for direct color dma stuff
Mike Pavone <pavone@retrodev.com>
parents:
190
diff
changeset
|
1096 start = context->framebuf + line * 320 + x; |
190
4cb8a3891e26
Small fix to bg drawing that yields the proper res for direct color DMA
Mike Pavone <pavone@retrodev.com>
parents:
189
diff
changeset
|
1097 end = start + 2; |
54
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43
diff
changeset
|
1098 } |
3b79cbcf6846
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parents:
43
diff
changeset
|
1099 } |
291
eea3b118940d
Make sure all rendering operations mask CRAM with 0xEEE before using it
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parents:
233
diff
changeset
|
1100 uint16_t color = (context->cram[context->regs[REG_BG_COLOR] & 0x3F] & 0xEEE); |
54
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parents:
43
diff
changeset
|
1101 while (start != end) { |
189
806c3b7a6f2a
Fix background rendering when display is off and improve refresh cycle emulation so that direct color DMA demos work
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diff
changeset
|
1102 *start = color; |
54
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parents:
43
diff
changeset
|
1103 ++start; |
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43
diff
changeset
|
1104 } |
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parents:
43
diff
changeset
|
1105 } |
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parents:
43
diff
changeset
|
1106 } |
3b79cbcf6846
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43
diff
changeset
|
1107 |
20
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diff
changeset
|
1108 void vdp_run_context(vdp_context * context, uint32_t target_cycles) |
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diff
changeset
|
1109 { |
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1110 while(context->cycles < target_cycles) |
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1111 { |
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1112 uint32_t line = context->cycles / MCLKS_LINE; |
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1113 uint32_t active_lines = context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE; |
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1114 if (!line) { |
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1115 latch_mode(context); |
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1116 } |
317
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1117 uint32_t linecyc = context->cycles % MCLKS_LINE; |
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1118 if (linecyc == 0) { |
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1119 if (line <= 1 || line >= active_lines) { |
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1120 context->hint_counter = context->regs[REG_HINT]; |
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1121 } else if (context->hint_counter) { |
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1122 context->hint_counter--; |
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1123 } else { |
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1124 context->flags2 |= FLAG2_HINT_PENDING; |
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1125 context->hint_counter = context->regs[REG_HINT]; |
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1126 } |
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1127 } else if(line == active_lines) { |
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1128 uint32_t intcyc = context->latched_mode & BIT_H40 ? VINT_SLOTS_H40 * MCLKS_SLOT_H40 : VINT_SLOTS_H32 * MCLKS_SLOT_H32; |
317
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1129 if (linecyc == intcyc) { |
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1130 context->flags2 |= FLAG2_VINT_PENDING; |
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1131 } |
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1132 } |
329
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1133 if ((line < active_lines || (line == active_lines && linecyc < (context->latched_mode & BIT_H40 ? 64 : 80))) && context->regs[REG_MODE_2] & DISPLAY_ENABLE) { |
20
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1134 //first sort-of active line is treated as 255 internally |
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1135 //it's used for gathering sprite info for line |
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1136 line = (line - 1) & 0xFF; |
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1137 |
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1138 //Convert to slot number |
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1139 if (context->latched_mode & BIT_H40){ |
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1140 //TODO: Deal with nasty clock switching during HBLANK |
328
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1141 uint32_t clock_inc = MCLKS_LINE-linecyc < MCLKS_SLOT_H40 ? MCLKS_LINE-linecyc : MCLKS_SLOT_H40; |
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1142 linecyc = linecyc/MCLKS_SLOT_H40; |
54
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diff
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|
1143 vdp_h40(line, linecyc, context); |
317
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1144 context->cycles += clock_inc; |
20
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1145 } else { |
328
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1146 linecyc = linecyc/MCLKS_SLOT_H32; |
54
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diff
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|
1147 vdp_h32(line, linecyc, context); |
328
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1148 context->cycles += MCLKS_SLOT_H32; |
20
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1149 } |
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|
1150 } else { |
54
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diff
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|
1151 if (!is_refresh(context)) { |
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diff
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|
1152 external_slot(context); |
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43
diff
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|
1153 } |
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1154 if (line < active_lines) { |
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diff
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1155 check_render_bg(context, line); |
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1156 } |
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1157 if (context->latched_mode & BIT_H40){ |
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1158 uint32_t clock_inc = MCLKS_LINE-linecyc < MCLKS_SLOT_H40 ? MCLKS_LINE-linecyc : MCLKS_SLOT_H40; |
54
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diff
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|
1159 //TODO: Deal with nasty clock switching during HBLANK |
317
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291
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|
1160 context->cycles += clock_inc; |
54
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diff
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|
1161 } else { |
328
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|
1162 context->cycles += MCLKS_SLOT_H32; |
54
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|
1163 } |
20
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|
1164 } |
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1165 } |
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|
1166 } |
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|
1167 |
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|
1168 uint32_t vdp_run_to_vblank(vdp_context * context) |
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|
1169 { |
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|
1170 uint32_t target_cycles = ((context->latched_mode & BIT_PAL) ? PAL_ACTIVE : NTSC_ACTIVE) * MCLKS_LINE; |
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1171 vdp_run_context(context, target_cycles); |
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|
1172 return context->cycles; |
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|
1173 } |
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1174 |
75 | 1175 void vdp_run_dma_done(vdp_context * context, uint32_t target_cycles) |
1176 { | |
1177 for(;;) { | |
1178 uint32_t dmalen = (context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L]; | |
1179 if (!dmalen) { | |
1180 dmalen = 0x10000; | |
1181 } | |
1182 uint32_t min_dma_complete = dmalen * (context->latched_mode & BIT_H40 ? 16 : 20); | |
1183 if ((context->regs[REG_DMASRC_H] & 0xC0) == 0xC0 || (context->cd & 0xF) == VRAM_WRITE) { | |
1184 //DMA copies take twice as long to complete since they require a read and a write | |
1185 //DMA Fills and transfers to VRAM also take twice as long as it requires 2 writes for a single word | |
1186 min_dma_complete *= 2; | |
1187 } | |
1188 min_dma_complete += context->cycles; | |
1189 if (target_cycles < min_dma_complete) { | |
1190 vdp_run_context(context, target_cycles); | |
1191 return; | |
1192 } else { | |
1193 vdp_run_context(context, min_dma_complete); | |
1194 if (!(context->flags & FLAG_DMA_RUN)) { | |
1195 return; | |
1196 } | |
1197 } | |
1198 } | |
1199 } | |
1200 | |
1201 int vdp_control_port_write(vdp_context * context, uint16_t value) | |
54
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1202 { |
58
a6a19c45d358
Properly zero-init all VDP buffers. Comment out some debug printfs.
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56
diff
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|
1203 //printf("control port write: %X\n", value); |
149
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143
diff
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|
1204 if (context->flags & FLAG_DMA_RUN) { |
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143
diff
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|
1205 return -1; |
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1206 } |
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1207 if (context->flags & FLAG_PENDING) { |
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1208 context->address = (context->address & 0x3FFF) | (value << 14); |
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1209 context->cd = (context->cd & 0x3) | ((value >> 2) & 0x3C); |
75 | 1210 context->flags &= ~FLAG_PENDING; |
87
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1211 //printf("New Address: %X, New CD: %X\n", context->address, context->cd); |
327
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1212 if (context->cd & 0x20 && (context->regs[REG_MODE_2] & BIT_DMA_ENABLE)) { |
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1213 // |
75 | 1214 if((context->regs[REG_DMASRC_H] & 0xC0) != 0x80) { |
1215 //DMA copy or 68K -> VDP, transfer starts immediately | |
1216 context->flags |= FLAG_DMA_RUN; | |
131
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diff
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1217 context->dma_cd = context->cd; |
75 | 1218 if (!(context->regs[REG_DMASRC_H] & 0x80)) { |
327
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1219 //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 | 1220 return 1; |
327
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1221 } else { |
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1222 //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 | 1223 } |
327
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1224 } else { |
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1225 //printf("DMA Fill Address: %X, New CD: %X\n", context->address, context->cd); |
75 | 1226 } |
63
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58
diff
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1227 } |
54
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1228 } else { |
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1229 if ((value & 0xC000) == 0x8000) { |
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1230 //Register write |
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1231 uint8_t reg = (value >> 8) & 0x1F; |
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|
1232 if (reg < VDP_REGS) { |
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1233 //printf("register %d set to %X\n", reg, value & 0xFF); |
54
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1234 context->regs[reg] = value; |
151
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|
1235 if (reg == REG_MODE_2) { |
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1236 //printf("Display is now %s\n", (context->regs[REG_MODE_2] & DISPLAY_ENABLE) ? "enabled" : "disabled"); |
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1237 } |
54
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|
1238 } |
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|
1239 } else { |
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diff
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|
1240 context->flags |= FLAG_PENDING; |
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1241 context->address = (context->address &0xC000) | (value & 0x3FFF); |
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diff
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|
1242 context->cd = (context->cd &0x3C) | (value >> 14); |
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diff
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|
1243 } |
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|
1244 } |
75 | 1245 return 0; |
54
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43
diff
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|
1246 } |
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|
1247 |
149
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Make writes to control and data port block when DMA is in progress
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|
1248 int vdp_data_port_write(vdp_context * context, uint16_t value) |
54
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43
diff
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|
1249 { |
58
a6a19c45d358
Properly zero-init all VDP buffers. Comment out some debug printfs.
Mike Pavone <pavone@retrodev.com>
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56
diff
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|
1250 //printf("data port write: %X\n", value); |
149
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|
1251 if (context->flags & FLAG_DMA_RUN) { |
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diff
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1252 return -1; |
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diff
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|
1253 } |
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|
1254 if (!(context->cd & 1)) { |
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diff
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|
1255 //ignore writes when cd is configured for read |
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|
1256 return 0; |
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diff
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|
1257 } |
54
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|
1258 context->flags &= ~FLAG_PENDING; |
109
004dd46e0a97
COmment out fifo full debug printf
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108
diff
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|
1259 /*if (context->fifo_cur == context->fifo_end) { |
54
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|
1260 printf("FIFO full, waiting for space before next write at cycle %X\n", context->cycles); |
109
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diff
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|
1261 }*/ |
54
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|
1262 while (context->fifo_cur == context->fifo_end) { |
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diff
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|
1263 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20)); |
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diff
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|
1264 } |
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|
1265 context->fifo_cur->cycle = context->cycles; |
138 | 1266 context->fifo_cur->address = context->address; |
54
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diff
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|
1267 context->fifo_cur->value = value; |
138 | 1268 context->fifo_cur->cd = context->cd; |
54
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diff
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|
1269 context->fifo_cur->partial = 0; |
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diff
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|
1270 context->fifo_cur++; |
138 | 1271 context->address += context->regs[REG_AUTOINC]; |
149
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|
1272 return 0; |
54
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43
diff
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|
1273 } |
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|
1274 |
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|
1275 uint16_t vdp_control_port_read(vdp_context * context) |
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diff
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|
1276 { |
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|
1277 context->flags &= ~FLAG_PENDING; |
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|
1278 uint16_t value = 0x3400; |
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43
diff
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|
1279 if (context->fifo_cur == (context->fifo_end - FIFO_SIZE)) { |
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43
diff
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|
1280 value |= 0x200; |
3b79cbcf6846
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43
diff
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|
1281 } |
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43
diff
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|
1282 if (context->fifo_cur == context->fifo_end) { |
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43
diff
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|
1283 value |= 0x100; |
3b79cbcf6846
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43
diff
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|
1284 } |
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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291
diff
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|
1285 if (context->flags2 & FLAG2_VINT_PENDING) { |
e5e8b48ad157
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Mike Pavone <pavone@retrodev.com>
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291
diff
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|
1286 value |- 0x80; |
e5e8b48ad157
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diff
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|
1287 } |
318
789f2f5f2277
Implement hblank flag in status register
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317
diff
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|
1288 uint32_t line= context->cycles / MCLKS_LINE; |
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Implement hblank flag in status register
Mike Pavone <pavone@retrodev.com>
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317
diff
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|
1289 uint32_t linecyc = context->cycles % MCLKS_LINE; |
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Implement hblank flag in status register
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317
diff
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|
1290 if (line >= (context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE)) { |
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Implement hblank flag in status register
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317
diff
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|
1291 value |= 0x8; |
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Implement hblank flag in status register
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317
diff
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|
1292 } |
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Implement hblank flag in status register
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317
diff
changeset
|
1293 if (linecyc < (context->latched_mode & BIT_H40 ? (148 + 61) * 4 : ( + 46) * 5)) { |
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Implement hblank flag in status register
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317
diff
changeset
|
1294 value |= 0x4; |
789f2f5f2277
Implement hblank flag in status register
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317
diff
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|
1295 } |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
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143
diff
changeset
|
1296 if (context->flags & FLAG_DMA_RUN) { |
141
576f55711d8d
Fix DMA in progress flag in VDP status register
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138
diff
changeset
|
1297 value |= 0x2; |
75 | 1298 } |
317
e5e8b48ad157
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Mike Pavone <pavone@retrodev.com>
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291
diff
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|
1299 if (context->latched_mode & BIT_PAL) {//Not sure about this, need to verify |
e5e8b48ad157
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Mike Pavone <pavone@retrodev.com>
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291
diff
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|
1300 value |= 0x1; |
e5e8b48ad157
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291
diff
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|
1301 } |
318
789f2f5f2277
Implement hblank flag in status register
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317
diff
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|
1302 //TODO: Sprite overflow, sprite collision, odd frame flag |
54
3b79cbcf6846
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43
diff
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|
1303 return value; |
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|
1304 } |
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|
1305 |
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|
1306 uint16_t vdp_data_port_read(vdp_context * context) |
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diff
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|
1307 { |
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|
1308 context->flags &= ~FLAG_PENDING; |
138 | 1309 if (context->cd & 1) { |
54
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|
1310 return 0; |
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diff
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|
1311 } |
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|
1312 //Not sure if the FIFO should be drained before processing a read or not, but it would make sense |
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1313 context->flags &= ~FLAG_UNUSED_SLOT; |
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|
1314 while (!(context->flags & FLAG_UNUSED_SLOT)) { |
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43
diff
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|
1315 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20)); |
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|
1316 } |
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diff
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|
1317 uint16_t value = 0; |
138 | 1318 switch (context->cd & 0xF) |
54
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|
1319 { |
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|
1320 case VRAM_READ: |
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diff
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|
1321 value = context->vdpmem[context->address] << 8; |
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diff
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|
1322 context->flags &= ~FLAG_UNUSED_SLOT; |
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|
1323 while (!(context->flags & FLAG_UNUSED_SLOT)) { |
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diff
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1324 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20)); |
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|
1325 } |
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|
1326 value |= context->vdpmem[context->address ^ 1]; |
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diff
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|
1327 break; |
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|
1328 case CRAM_READ: |
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|
1329 value = context->cram[(context->address/2) & (CRAM_SIZE-1)]; |
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1330 break; |
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|
1331 case VSRAM_READ: |
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|
1332 if (((context->address / 2) & 63) < VSRAM_SIZE) { |
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|
1333 value = context->vsram[context->address & 63]; |
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|
1334 } |
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|
1335 break; |
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|
1336 } |
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|
1337 context->address += context->regs[REG_AUTOINC]; |
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|
1338 return value; |
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1339 } |
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1340 |
137 | 1341 uint16_t vdp_hv_counter_read(vdp_context * context) |
1342 { | |
1343 uint32_t line= context->cycles / MCLKS_LINE; | |
1344 if (!line) { | |
1345 line = 0xFF; | |
1346 } else { | |
1347 line--; | |
1348 if (line > 0xEA) { | |
1349 line = (line + 0xFA) & 0xFF; | |
1350 } | |
1351 } | |
1352 uint32_t linecyc = context->cycles % MCLKS_LINE; | |
1353 if (context->latched_mode & BIT_H40) { | |
1354 linecyc /= 8; | |
1355 if (linecyc >= 86) { | |
1356 linecyc -= 86; | |
1357 } else { | |
1358 linecyc += 334; | |
1359 } | |
1360 if (linecyc > 0x16C) { | |
1361 linecyc += 92; | |
1362 } | |
1363 } else { | |
1364 linecyc /= 10; | |
1365 if (linecyc >= 74) { | |
1366 linecyc -= 74; | |
1367 } else { | |
1368 linecyc += 268; | |
1369 } | |
1370 if (linecyc > 0x127) { | |
1371 linecyc += 170; | |
1372 } | |
1373 } | |
1374 linecyc &= 0xFF; | |
1375 return (line << 8) | linecyc; | |
1376 } | |
1377 | |
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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|
1378 void vdp_adjust_cycles(vdp_context * context, uint32_t deduction) |
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|
1379 { |
aef6302770c2
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|
1380 context->cycles -= deduction; |
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|
1381 for(fifo_entry * start = (context->fifo_end - FIFO_SIZE); start < context->fifo_cur; start++) { |
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|
1382 if (start->cycle >= deduction) { |
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|
1383 start->cycle -= deduction; |
aef6302770c2
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|
1384 } else { |
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|
1385 start->cycle = 0; |
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|
1386 } |
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|
1387 } |
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|
1388 } |
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Mike Pavone <pavone@retrodev.com>
parents:
63
diff
changeset
|
1389 |
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
|
1390 uint32_t vdp_next_hint(vdp_context * context) |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1391 { |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1392 if (!(context->regs[REG_MODE_1] & BIT_HINT_EN)) { |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1393 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
|
1394 } |
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
|
1395 if (context->flags2 & FLAG2_HINT_PENDING) { |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1396 return context->cycles; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1397 } |
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
|
1398 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:
291
diff
changeset
|
1399 uint32_t line = 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
|
1400 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.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1401 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
|
1402 } |
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
|
1403 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
|
1404 uint32_t hcycle = context->cycles + context->hint_counter * MCLKS_LINE + MCLKS_LINE - linecyc; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1405 if (!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
|
1406 hcycle += 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
|
1407 } |
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
|
1408 return hcycle; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1409 } |
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
|
1410 |
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
|
1411 uint32_t vdp_next_vint(vdp_context * context) |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1412 { |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
323
diff
changeset
|
1413 if (!(context->regs[REG_MODE_2] & BIT_VINT_EN)) { |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1414 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
|
1415 } |
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
|
1416 if (context->flags2 & FLAG2_VINT_PENDING) { |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1417 return context->cycles; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1418 } |
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
|
1419 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:
291
diff
changeset
|
1420 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:
291
diff
changeset
|
1421 if (context->latched_mode & BIT_H40) { |
328
bf7ed23efa40
Fewer magic numbers in the VDP core for the win
Mike Pavone <pavone@retrodev.com>
parents:
327
diff
changeset
|
1422 vcycle += VINT_SLOTS_H40 * MCLKS_SLOT_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:
291
diff
changeset
|
1423 } else { |
328
bf7ed23efa40
Fewer magic numbers in the VDP core for the win
Mike Pavone <pavone@retrodev.com>
parents:
327
diff
changeset
|
1424 vcycle += VINT_SLOTS_H32 * MCLKS_SLOT_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
|
1425 } |
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 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
diff
changeset
|
1427 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
|
1428 } |
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 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
|
1430 } |
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 |
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 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
|
1433 { |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1434 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
|
1435 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
|
1436 } 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
|
1437 context->flags2 &= ~FLAG2_HINT_PENDING; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1438 } |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
291
diff
changeset
|
1439 } |
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
|
1440 |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1441 #define GST_VDP_REGS 0xFA |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1442 #define GST_VDP_MEM 0x12478 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1443 |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1444 void vdp_load_savestate(vdp_context * context, FILE * state_file) |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1445 { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1446 uint8_t tmp_buf[CRAM_SIZE*2]; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1447 fseek(state_file, GST_VDP_REGS, SEEK_SET); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1448 fread(context->regs, 1, VDP_REGS, state_file); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1449 latch_mode(context); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1450 fread(tmp_buf, 1, sizeof(tmp_buf), state_file); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1451 for (int i = 0; i < CRAM_SIZE; i++) { |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1452 context->cram[i] = (tmp_buf[i*2+1] << 8) | tmp_buf[i*2]; |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1453 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1454 fread(tmp_buf, 2, VSRAM_SIZE, state_file); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1455 for (int i = 0; i < VSRAM_SIZE; i++) { |
23
3e924bb56560
Fix endianness of VSRAM when read from Genecyst save state
Mike Pavone <pavone@retrodev.com>
parents:
22
diff
changeset
|
1456 context->vsram[i] = (tmp_buf[i*2+1] << 8) | tmp_buf[i*2]; |
20
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1457 } |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1458 fseek(state_file, GST_VDP_MEM, SEEK_SET); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1459 fread(context->vdpmem, 1, VRAM_SIZE, state_file); |
f664eeb55cb4
Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1460 } |
54
3b79cbcf6846
Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents:
43
diff
changeset
|
1461 |
56
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1462 void vdp_save_state(vdp_context * context, FILE * outfile) |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1463 { |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1464 uint8_t tmp_buf[CRAM_SIZE*2]; |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1465 fseek(outfile, GST_VDP_REGS, SEEK_SET); |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1466 fwrite(context->regs, 1, VDP_REGS, outfile); |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1467 for (int i = 0; i < CRAM_SIZE; i++) { |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1468 tmp_buf[i*2] = context->cram[i]; |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1469 tmp_buf[i*2+1] = context->cram[i] >> 8; |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1470 } |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1471 fwrite(tmp_buf, 1, sizeof(tmp_buf), outfile); |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1472 for (int i = 0; i < VSRAM_SIZE; i++) { |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1473 tmp_buf[i*2] = context->vsram[i]; |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1474 tmp_buf[i*2+1] = context->vsram[i] >> 8; |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1475 } |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1476 fwrite(tmp_buf, 2, VSRAM_SIZE, outfile); |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1477 fseek(outfile, GST_VDP_MEM, SEEK_SET); |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1478 fwrite(context->vdpmem, 1, VRAM_SIZE, outfile); |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1479 } |
a28b1dfe1af2
Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents:
54
diff
changeset
|
1480 |