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annotate vdp.c @ 39:3c69319269ef

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Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
author Mike Pavone <pavone@retrodev.com>
date Sun, 09 Dec 2012 01:13:41 -0800
parents 898e3d035f42
children 7368a7071908
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include "vdp.h"
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2 #include <stdlib.h>
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3 #include <string.h>
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4
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5 #define MCLKS_LINE 3420
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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 #define BIT_PAL 0x8
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14 #define BIT_H40 0x1
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3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
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16 #define SCROLL_BUFFER_SIZE 32
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17 #define SCROLL_BUFFER_DRAW 16
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18
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19 void init_vdp_context(vdp_context * context)
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20 {
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21 memset(context, 0, sizeof(context));
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22 context->vdpmem = malloc(VRAM_SIZE);
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23 context->framebuf = malloc(FRAMEBUF_SIZE);
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24 context->linebuf = malloc(LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2);
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25 context->tmp_buf_a = context->linebuf + LINEBUF_SIZE;
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26 context->tmp_buf_b = context->tmp_buf_a + SCROLL_BUFFER_SIZE;
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27 context->sprite_draws = MAX_DRAWS;
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28 }
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30 void render_sprite_cells(vdp_context * context)
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31 {
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32 if (context->cur_slot >= context->sprite_draws) {
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33 sprite_draw * d = context->sprite_draw_list + context->cur_slot;
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35 uint16_t dir;
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36 int16_t x;
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37 if (d->h_flip) {
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38 x = d->x_pos + 7;
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39 dir = -1;
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40 } else {
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41 x = d->x_pos;
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42 dir = 1;
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43 }
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44 //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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45 context->cur_slot--;
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46 for (uint16_t address = d->address; address < d->address+4; address++) {
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47 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) {
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48 context->linebuf[x] = (context->vdpmem[address] >> 4) | d->pal_priority;
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49 }
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50 x += dir;
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51 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) {
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52 context->linebuf[x] = (context->vdpmem[address] & 0xF) | d->pal_priority;
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53 }
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54 x += dir;
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55 }
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56 }
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57 }
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59 void scan_sprite_table(uint32_t line, vdp_context * context)
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60 {
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61 if (context->sprite_index && context->slot_counter) {
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62 line += 1;
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63 line &= 0xFF;
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64 context->sprite_index &= 0x7F;
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65 if (context->latched_mode & BIT_H40) {
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66 if (context->sprite_index >= MAX_SPRITES_FRAME) {
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67 context->sprite_index = 0;
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68 return;
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69 }
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70 } else if(context->sprite_index >= MAX_SPRITES_FRAME_H32) {
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71 context->sprite_index = 0;
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72 return;
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73 }
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74 //TODO: Read from SAT cache rather than from VRAM
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75 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9;
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76 uint16_t address = context->sprite_index * 8 + sat_address;
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77 int16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) - 128;
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78 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * 8;
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79 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height);
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80 if (y <= line && line < (y + height)) {
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81 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line);
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82 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2];
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83 context->sprite_info_list[context->slot_counter].index = context->sprite_index;
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84 context->sprite_info_list[context->slot_counter].y = y;
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85 }
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86 context->sprite_index = context->vdpmem[address+3] & 0x7F;
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87 if (context->sprite_index && context->slot_counter)
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88 {
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89 address = context->sprite_index * 8 + sat_address;
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90 y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) - 128;
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91 height = ((context->vdpmem[address+2] & 0x3) + 1) * 8;
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92 if (y <= line && line < (y + height)) {
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93 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line);
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94 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2];
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95 context->sprite_info_list[context->slot_counter].index = context->sprite_index;
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96 context->sprite_info_list[context->slot_counter].y = y;
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97 }
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98 context->sprite_index = context->vdpmem[address+3] & 0x7F;
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99 }
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100 }
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101 }
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102
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103 #define FLAG_DOT_OFLOW 0x1
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104 #define FLAG_CAN_MASK 0x2
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105 #define FLAG_MASKED 0x4
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106 void read_sprite_x(uint32_t line, vdp_context * context)
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107 {
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108 if (context->cur_slot >= context->slot_counter) {
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109 if (context->sprite_draws) {
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110 line += 1;
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111 line &= 0xFF;
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112 //in tiles
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113 uint8_t width = ((context->sprite_info_list[context->cur_slot].size >> 2) & 0x3) + 1;
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114 //in pixels
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115 uint8_t height = ((context->sprite_info_list[context->cur_slot].size & 0x3) + 1) * 8;
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116 uint16_t att_addr = ((context->regs[REG_SAT] & 0x7F) << 9) + context->sprite_info_list[context->cur_slot].index * 8 + 4;
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117 uint16_t tileinfo = (context->vdpmem[att_addr] << 8) | context->vdpmem[att_addr+1];
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118 uint8_t pal_priority = (tileinfo >> 9) & 0x70;
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119 uint8_t row;
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120 if (tileinfo & MAP_BIT_V_FLIP) {
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121 row = (context->sprite_info_list[context->cur_slot].y + height - 1) - line;
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122 } else {
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123 row = line-context->sprite_info_list[context->cur_slot].y;
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124 }
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125 uint16_t address = ((tileinfo & 0x7FF) << 5) + row * 4;
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126 int16_t x = ((context->vdpmem[att_addr+ 2] & 0x3) << 8) | context->vdpmem[att_addr + 3];
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parents: 35
diff changeset
127 if (x) {
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
128 context->flags |= FLAG_CAN_MASK;
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
129 } else if(context->flags & (FLAG_CAN_MASK | FLAG_DOT_OFLOW)) {
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
130 context->flags |= FLAG_MASKED;
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
131 }
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
132
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
133 context->flags &= ~FLAG_DOT_OFLOW;
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
134 int16_t i;
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
135 if (context->flags & FLAG_MASKED) {
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
136 for (i=0; i < width && context->sprite_draws; i++) {
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
137 --context->sprite_draws;
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
138 context->sprite_draw_list[context->sprite_draws].x_pos = -128;
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
139 }
36
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
140 } else {
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
141 x -= 128;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
142 int16_t base_x = x;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
143 int16_t dir;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
144 if (tileinfo & MAP_BIT_H_FLIP) {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
145 x += (width-1) * 8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
146 dir = -8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
147 } else {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
148 dir = 8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
149 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
150 //printf("Sprite %d | x: %d, y: %d, width: %d, height: %d, pal_priority: %X, row: %d, tile addr: %X\n", context->sprite_info_list[context->cur_slot].index, x, context->sprite_info_list[context->cur_slot].y, width, height, pal_priority, row, address);
35
233c7737c152 Small fix to overflow flag
Mike Pavone <pavone@retrodev.com>
parents: 34
diff changeset
151 for (i=0; i < width && context->sprite_draws; i++, x += dir) {
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
152 --context->sprite_draws;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
153 context->sprite_draw_list[context->sprite_draws].address = address + i * height * 4;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
154 context->sprite_draw_list[context->sprite_draws].x_pos = x;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
155 context->sprite_draw_list[context->sprite_draws].pal_priority = pal_priority;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
156 context->sprite_draw_list[context->sprite_draws].h_flip = (tileinfo & MAP_BIT_H_FLIP) ? 1 : 0;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
157 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
158 }
36
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
159 if (i < width) {
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
160 context->flags |= FLAG_DOT_OFLOW;
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
161 }
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
162 context->cur_slot--;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
163 } else {
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
164 context->flags |= FLAG_DOT_OFLOW;
20
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parents:
diff changeset
165 }
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parents:
diff changeset
166 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
167 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
168
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parents:
diff changeset
169 void external_slot(vdp_context * context)
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parents:
diff changeset
170 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
171 //TODO: Implement me
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
172 }
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parents:
diff changeset
173
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
174 void read_map_scroll(uint16_t column, uint16_t vsram_off, uint32_t line, uint16_t address, uint16_t hscroll_val, vdp_context * context)
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
175 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
176 uint16_t vscroll;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
177 switch(context->regs[REG_SCROLL] & 0x30)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
178 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
179 case 0:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
180 vscroll = 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
181 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
182 case 0x10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
183 vscroll = 0x1FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
184 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
185 case 0x20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
186 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
187 vscroll = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
188 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
189 case 0x30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
190 vscroll = 0x3FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
191 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
192 }
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
193 vscroll &= (context->vsram[(context->regs[REG_MODE_3] & 0x4 ? column : 0) + vsram_off] + line);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
194 context->v_offset = vscroll & 0x7;
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
195 //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
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
196 vscroll /= 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
197 uint16_t hscroll_mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
198 uint16_t v_mul;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
199 switch(context->regs[REG_SCROLL] & 0x3)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
200 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
201 case 0:
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
202 hscroll_mask = 0xF0;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
203 v_mul = 64;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
204 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
205 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
206 hscroll_mask = 0x3F;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
207 v_mul = 128;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
208 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
209 case 0x2:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
210 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
211 hscroll_mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
212 v_mul = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
213 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
214 case 0x3:
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
215 hscroll_mask = 0x3F0;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
216 v_mul = 256;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
217 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
218 }
28
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
219 uint16_t hscroll, offset;
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
220 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
221 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
222 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
223 //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
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
224 uint16_t col_val = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1];
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
225 if (i) {
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
226 context->col_2 = col_val;
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
227 } else {
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
228 context->col_1 = col_val;
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
229 }
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
230 }
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
231 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
232
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
233 void read_map_scroll_a(uint16_t column, uint32_t line, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
234 {
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
235 read_map_scroll(column, 0, line, (context->regs[REG_SCROLL_A] & 0x38) << 10, context->hscroll_a, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
236 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
237
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
238 void read_map_scroll_b(uint16_t column, uint32_t line, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
239 {
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
240 read_map_scroll(column, 1, line, (context->regs[REG_SCROLL_B] & 0x7) << 13, context->hscroll_b, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
241 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
242
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
243 void render_map(uint16_t col, uint8_t * tmp_buf, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
244 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
245 uint16_t address = ((col & 0x3FF) << 5);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
246 if (col & MAP_BIT_V_FLIP) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
247 address += 24 - 4 * context->v_offset;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
248 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
249 address += 4 * context->v_offset;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
250 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
251 uint16_t pal_priority = (col >> 9) & 0x70;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
252 int32_t dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
253 if (col & MAP_BIT_H_FLIP) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
254 tmp_buf += 7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
255 dir = -1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
256 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
257 dir = 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
258 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
259 for (uint32_t i=0; i < 4; i++, address++)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
260 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
261 *tmp_buf = pal_priority | (context->vdpmem[address] >> 4);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
262 tmp_buf += dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
263 *tmp_buf = pal_priority | (context->vdpmem[address] & 0xF);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
264 tmp_buf += dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
265 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
266 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
267
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
268 void render_map_1(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
269 {
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
270 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
271 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
272
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
273 void render_map_2(vdp_context * context)
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
274 {
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
275 render_map(context->col_2, context->tmp_buf_a+SCROLL_BUFFER_DRAW+8, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
276 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
277
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
278 void render_map_3(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
279 {
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
280 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
281 }
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parents:
diff changeset
282
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parents:
diff changeset
283 void render_map_output(uint32_t line, int32_t col, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
284 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
285 if (line >= 240) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
286 return;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
287 }
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
288 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
289 uint16_t *dst, *end;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
290 uint8_t *sprite_buf, *plane_a, *plane_b;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
291 if (col)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
292 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
293 col-=2;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
294 dst = context->framebuf + line * 320 + col * 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
295 sprite_buf = context->linebuf + col * 8;
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
296 plane_a = context->tmp_buf_a + SCROLL_BUFFER_DRAW - (context->hscroll_a & 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
297 plane_b = context->tmp_buf_b + SCROLL_BUFFER_DRAW - (context->hscroll_b & 0xF);
30
03f9bb57cc54 Small cleanup
Mike Pavone <pavone@retrodev.com>
parents: 29
diff changeset
298 end = dst + 16;
03f9bb57cc54 Small cleanup
Mike Pavone <pavone@retrodev.com>
parents: 29
diff changeset
299 //printf("A | tmp_buf offset: %d\n", 8 - (context->hscroll_a & 0x7));
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
300 for (; dst < end; ++plane_a, ++plane_b, ++sprite_buf, ++dst) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
301 uint8_t pixel;
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
302 if (*sprite_buf & BUF_BIT_PRIORITY && *sprite_buf & 0xF) {
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
303 pixel = *sprite_buf;
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
304 } else if (*plane_a & BUF_BIT_PRIORITY && *plane_a & 0xF) {
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
305 pixel = *plane_a;
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
306 } else if (*plane_b & BUF_BIT_PRIORITY && *plane_b & 0xF) {
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
307 pixel = *plane_b;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
308 } else if (*sprite_buf & 0xF) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
309 pixel = *sprite_buf;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
310 } else if (*plane_a & 0xF) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
311 pixel = *plane_a;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
312 } else if (*plane_b & 0xF){
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
313 pixel = *plane_b;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
314 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
315 pixel = context->regs[REG_BG_COLOR] & 0x3F;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
316 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
317 *dst = context->cram[pixel & 0x3F] | ((pixel & BUF_BIT_PRIORITY) ? 0x1000 : 0);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
318 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
319 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
320 //dst = context->framebuf + line * 320;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
321 //sprite_buf = context->linebuf + col * 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
322 //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
323 //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
324 //end = dst + 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
325 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
326
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
327 uint16_t remaining = context->hscroll_a & 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
328 memcpy(context->tmp_buf_a + SCROLL_BUFFER_DRAW - remaining, context->tmp_buf_a + SCROLL_BUFFER_SIZE - remaining, remaining);
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
329 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
330 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
331 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
332
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
333 #define COLUMN_RENDER_BLOCK(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
334 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
335 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
336 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
337 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
338 external_slot(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
339 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
340 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
341 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
342 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
343 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
344 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
345 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
346 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
347 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
348 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
349 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
350 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
351 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
352 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
353 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
354 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
355 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
356 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
357 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
358
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
359 #define COLUMN_RENDER_BLOCK_REFRESH(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
360 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
361 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
362 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
363 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
364 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
365 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
366 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
367 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
368 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
369 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
370 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
371 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
372 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
373 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
374 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
375 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
376 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
377 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
378 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
379 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
380 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
381 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
382 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
383
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
384 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
385 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
386 uint16_t address;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
387 uint32_t mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
388 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
389 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
390 //sprite render to line buffer starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
391 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
392 context->cur_slot = MAX_DRAWS-1;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
393 memset(context->linebuf, 0, LINEBUF_SIZE);
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
394 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
395 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
396 case 1:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
397 case 2:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
398 case 3:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
399 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
400 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
401 //sprite attribute table scan starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
402 case 4:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
403 render_sprite_cells( context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
404 context->sprite_index = 0x80;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
405 context->slot_counter = MAX_SPRITES_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
406 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
407 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
408 case 5:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
409 case 6:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
410 case 7:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
411 case 8:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
412 case 9:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
413 case 10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
414 case 11:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
415 case 12:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
416 case 13:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
417 case 14:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
418 case 15:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
419 case 16:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
420 case 17:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
421 case 18:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
422 case 19:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
423 case 20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
424 //!HSYNC asserted
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
425 case 21:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
426 case 22:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
427 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
428 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
429 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
430 case 23:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
431 external_slot(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
432 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
433 case 24:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
434 case 25:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
435 case 26:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
436 case 27:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
437 case 28:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
438 case 29:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
439 case 30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
440 case 31:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
441 case 32:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
442 case 33:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
443 case 34:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
444 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
445 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
446 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
447 case 35:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
448 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
449 mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
450 if (context->regs[REG_MODE_3] & 0x2) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
451 mask |= 0xF8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
452 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
453 if (context->regs[REG_MODE_3] & 0x1) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
454 mask |= 0x7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
455 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
456 line &= mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
457 address += line * 4;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
458 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
459 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3];
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
460 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
461 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
462 case 36:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
463 //!HSYNC high
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
464 case 37:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
465 case 38:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
466 case 39:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
467 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
468 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
469 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
470 case 40:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
471 read_map_scroll_a(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
472 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
473 case 41:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
474 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
475 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
476 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
477 case 42:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
478 render_map_1(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
479 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
480 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
481 case 43:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
482 render_map_2(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
483 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
484 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
485 case 44:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
486 read_map_scroll_b(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
487 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
488 case 45:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
489 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
490 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
491 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
492 case 46:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
493 render_map_3(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
494 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
495 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
496 case 47:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
497 render_map_output(line, 0, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
498 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
499 //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
500 //filled rather than the number of available slots
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
501 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
502 context->cur_slot = MAX_SPRITES_LINE-1;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
503 context->sprite_draws = MAX_DRAWS;
36
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
504 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
505 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
506 COLUMN_RENDER_BLOCK(2, 48)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
507 COLUMN_RENDER_BLOCK(4, 56)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
508 COLUMN_RENDER_BLOCK(6, 64)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
509 COLUMN_RENDER_BLOCK_REFRESH(8, 72)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
510 COLUMN_RENDER_BLOCK(10, 80)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
511 COLUMN_RENDER_BLOCK(12, 88)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
512 COLUMN_RENDER_BLOCK(14, 96)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
513 COLUMN_RENDER_BLOCK_REFRESH(16, 104)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
514 COLUMN_RENDER_BLOCK(18, 112)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
515 COLUMN_RENDER_BLOCK(20, 120)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
516 COLUMN_RENDER_BLOCK(22, 128)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
517 COLUMN_RENDER_BLOCK_REFRESH(24, 136)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
518 COLUMN_RENDER_BLOCK(26, 144)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
519 COLUMN_RENDER_BLOCK(28, 152)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
520 COLUMN_RENDER_BLOCK(30, 160)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
521 COLUMN_RENDER_BLOCK_REFRESH(32, 168)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
522 COLUMN_RENDER_BLOCK(34, 176)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
523 COLUMN_RENDER_BLOCK(36, 184)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
524 COLUMN_RENDER_BLOCK(38, 192)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
525 COLUMN_RENDER_BLOCK_REFRESH(40, 200)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
526 case 208:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
527 case 209:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
528 external_slot(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
529 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
530 default:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
531 //leftovers from HSYNC clock change nonsense
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
532 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
533 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
534 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
535
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
536 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
537 {
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
538 uint16_t address;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
539 uint32_t mask;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
540 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
541 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
542 //sprite render to line buffer starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
543 case 0:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
544 context->cur_slot = MAX_DRAWS_H32-1;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
545 memset(context->linebuf, 0, LINEBUF_SIZE);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
546 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
547 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
548 case 1:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
549 case 2:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
550 case 3:
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
551 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
552 break;
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
553 //sprite attribute table scan starts
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
554 case 4:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
555 render_sprite_cells( context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
556 context->sprite_index = 0x80;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
557 context->slot_counter = MAX_SPRITES_LINE_H32;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
558 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
559 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
560 case 5:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
561 case 6:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
562 case 7:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
563 case 8:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
564 case 9:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
565 case 10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
566 case 11:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
567 case 12:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
568 case 13:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
569 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
570 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
571 case 14:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
572 external_slot(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
573 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
574 case 15:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
575 case 16:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
576 case 17:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
577 case 18:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
578 case 19:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
579 //HSYNC start
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
580 case 20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
581 case 21:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
582 case 22:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
583 case 23:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
584 case 24:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
585 case 25:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
586 case 26:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
587 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
588 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
589 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
590 case 27:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
591 external_slot(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
592 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
593 case 28:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
594 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
595 mask = 0;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
596 if (context->regs[REG_MODE_3] & 0x2) {
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
597 mask |= 0xF8;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
598 }
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
599 if (context->regs[REG_MODE_3] & 0x1) {
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
600 mask |= 0x7;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
601 }
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
602 line &= mask;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
603 address += line * 4;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
604 context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1];
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
605 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3];
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
606 //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
607 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
608 case 29:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
609 case 30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
610 case 31:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
611 case 32:
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
612 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
613 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
614 break;
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
615 //!HSYNC high
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
616 case 33:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
617 read_map_scroll_a(0, line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
618 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
619 case 34:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
620 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
621 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
622 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
623 case 35:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
624 render_map_1(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
625 scan_sprite_table(line, context);//Just a guess
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
626 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
627 case 36:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
628 render_map_2(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
629 scan_sprite_table(line, context);//Just a guess
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
630 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
631 case 37:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
632 read_map_scroll_b(0, line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
633 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
634 case 38:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
635 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
636 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
637 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
638 case 39:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
639 render_map_3(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
640 scan_sprite_table(line, context);//Just a guess
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
641 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
642 case 40:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
643 render_map_output(line, 0, context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
644 scan_sprite_table(line, context);//Just a guess
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
645 //reverse context slot counter so it counts the number of sprite slots
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
646 //filled rather than the number of available slots
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
647 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
648 context->cur_slot = MAX_SPRITES_LINE_H32-1;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
649 context->sprite_draws = MAX_DRAWS_H32;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
650 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
651 break;
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
652 COLUMN_RENDER_BLOCK(2, 41)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
653 COLUMN_RENDER_BLOCK(4, 49)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
654 COLUMN_RENDER_BLOCK(6, 57)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
655 COLUMN_RENDER_BLOCK_REFRESH(8, 65)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
656 COLUMN_RENDER_BLOCK(10, 73)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
657 COLUMN_RENDER_BLOCK(12, 81)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
658 COLUMN_RENDER_BLOCK(14, 89)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
659 COLUMN_RENDER_BLOCK_REFRESH(16, 97)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
660 COLUMN_RENDER_BLOCK(18, 105)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
661 COLUMN_RENDER_BLOCK(20, 113)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
662 COLUMN_RENDER_BLOCK(22, 121)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
663 COLUMN_RENDER_BLOCK_REFRESH(24, 129)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
664 COLUMN_RENDER_BLOCK(26, 137)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
665 COLUMN_RENDER_BLOCK(28, 145)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
666 COLUMN_RENDER_BLOCK(30, 153)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
667 COLUMN_RENDER_BLOCK_REFRESH(32, 161)
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
668 case 169:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
669 case 170:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
670 external_slot(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
671 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
672 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
673 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
674 void latch_mode(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
675 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
676 context->latched_mode = (context->regs[REG_MODE_4] & 0x81) | (context->regs[REG_MODE_2] & BIT_PAL);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
677 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
678
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
679 void vdp_run_context(vdp_context * context, uint32_t target_cycles)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
680 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
681 while(context->cycles < target_cycles)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
682 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
683 uint32_t line = context->cycles / MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
684 uint32_t active_lines = context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
685 if (line < active_lines) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
686 if (!line) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
687 latch_mode(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
688 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
689 //first sort-of active line is treated as 255 internally
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
690 //it's used for gathering sprite info for line
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
691 line = (line - 1) & 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
692 uint32_t linecyc = context->cycles % MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
693
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
694 //Convert to slot number
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
695 if (context->latched_mode & BIT_H40){
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
696 //TODO: Deal with nasty clock switching during HBLANK
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
697 linecyc = linecyc/16;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
698 context->cycles += 16;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
699 vdp_h40(line, linecyc, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
700 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
701 linecyc = linecyc/20;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
702 context->cycles += 20;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
703 vdp_h32(line, linecyc, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
704 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
705 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
706 //TODO: Empty FIFO
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
707 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
708 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
709 }
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 uint32_t vdp_run_to_vblank(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
712 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
713 uint32_t target_cycles = ((context->latched_mode & BIT_PAL) ? PAL_ACTIVE : NTSC_ACTIVE) * MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
714 vdp_run_context(context, target_cycles);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
715 return context->cycles;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
716 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
717
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
718 #define GST_VDP_REGS 0xFA
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
719 #define GST_VDP_MEM 0x12478
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
720
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
721 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
722 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
723 uint8_t tmp_buf[CRAM_SIZE*2];
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
724 fseek(state_file, GST_VDP_REGS, SEEK_SET);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
725 fread(context->regs, 1, VDP_REGS, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
726 latch_mode(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
727 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
728 for (int i = 0; i < CRAM_SIZE; i++) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
729 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
730 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
731 fread(tmp_buf, 2, VSRAM_SIZE, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
732 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
733 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
734 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
735 fseek(state_file, GST_VDP_MEM, SEEK_SET);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
736 fread(context->vdpmem, 1, VRAM_SIZE, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
737 }