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Fix bug in MED mapper protection bit implementation
author Michael Pavone <pavone@retrodev.com>
date Sun, 28 Apr 2024 23:33:11 -0700
parents efd2242c2c23
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 Copyright 2013 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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5 */
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6 #ifndef VDP_H_
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7 #define VDP_H_
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8
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9 #include <stdint.h>
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10 #include <stdio.h>
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11 #include "system.h"
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12 #include "serialize.h"
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13
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14 #define VDP_REGS 24
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15 #define CRAM_SIZE 64
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16 #define SHADOW_OFFSET CRAM_SIZE
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17 #define HIGHLIGHT_OFFSET (SHADOW_OFFSET+CRAM_SIZE)
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18 #define MODE4_OFFSET (HIGHLIGHT_OFFSET+CRAM_SIZE)
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19 #define MIN_VSRAM_SIZE 40
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20 #define MAX_VSRAM_SIZE 64
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21 #define VRAM_SIZE (64*1024)
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22 #define BORDER_LEFT 13
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23 #define BORDER_RIGHT 14
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24 #define HORIZ_BORDER (BORDER_LEFT+BORDER_RIGHT)
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25 #define LINEBUF_SIZE (320+HORIZ_BORDER) //H40 + full border
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26 #define SCROLL_BUFFER_SIZE 32
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27 #define BORDER_BOTTOM 13 //TODO: Replace with actual value
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28 #define MAX_DRAWS_H32_MODE4 8
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29 #define MAX_SPRITES_LINE 20
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30 #define MAX_SPRITES_LINE_H32 16
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31 #define MAX_SPRITES_FRAME 80
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32 #define MAX_SPRITES_FRAME_H32 64
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33 #define SAT_CACHE_SIZE (MAX_SPRITES_FRAME * 4)
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34
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35 #define CRAM_BITS 0xEEE
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36 #define VSRAM_BITS 0x7FF
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37
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38 #define FBUF_SHADOW 0x0001
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39 #define FBUF_HILIGHT 0x0010
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40 #define FBUF_MODE4 0x0100
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41 #define FBUF_MASK (FBUF_SHADOW|FBUF_HILIGHT|FBUF_MODE4)
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42 #define FBUF_TMS (FBUF_MODE4 | FBUF_SHADOW)
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43 #define DBG_SHADOW 0x10
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44 #define DBG_HILIGHT 0x20
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45 #define DBG_PRIORITY 0x8
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46 #define DBG_SRC_MASK 0x7
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47 #define DBG_SRC_A 0x1
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48 #define DBG_SRC_W 0x2
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49 #define DBG_SRC_B 0x3
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50 #define DBG_SRC_S 0x4
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51 #define DBG_SRC_BG 0x0
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52
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53 #define MCLKS_LINE 3420
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54
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55 #define FLAG_DOT_OFLOW 0x01
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56 #define FLAG_CAN_MASK 0x02
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57 #define FLAG_MASKED 0x04
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58 #define FLAG_WINDOW 0x08
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59 #define FLAG_PENDING 0x10
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60 #define FLAG_READ_FETCHED 0x20
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61 #define FLAG_DMA_RUN 0x40
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62 #define FLAG_WINDOW_EDGE 0x80
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63
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64 #define FLAG2_VINT_PENDING 0x01
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65 #define FLAG2_HINT_PENDING 0x02
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66 #define FLAG2_READ_PENDING 0x04
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67 #define FLAG2_SPRITE_COLLIDE 0x08
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68 #define FLAG2_REGION_PAL 0x10
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69 #define FLAG2_EVEN_FIELD 0x20
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70 #define FLAG2_BYTE_PENDING 0x40
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71 #define FLAG2_PAUSE 0x80
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72
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73 #define DISPLAY_ENABLE 0x40
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74
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75 enum {
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76 REG_MODE_1=0,
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77 REG_MODE_2,
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78 REG_SCROLL_A,
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79 REG_WINDOW,
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80 REG_SCROLL_B,
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81 REG_SAT,
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82 REG_STILE_BASE,
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83 REG_BG_COLOR,
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84 REG_X_SCROLL,
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85 REG_Y_SCROLL,
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86 REG_HINT,
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87 REG_MODE_3,
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88 REG_MODE_4,
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89 REG_HSCROLL,
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90 REG_BGTILE_BASE,
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91 REG_AUTOINC,
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92 REG_SCROLL,
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93 REG_WINDOW_H,
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94 REG_WINDOW_V,
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95 REG_DMALEN_L,
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96 REG_DMALEN_H,
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97 REG_DMASRC_L,
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98 REG_DMASRC_M,
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99 REG_DMASRC_H,
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100 REG_KMOD_CTRL=29,
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101 REG_KMOD_MSG,
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102 REG_KMOD_TIMER,
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103 REG_COLOR_TABLE=REG_WINDOW,
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104 REG_PATTERN_GEN=REG_SCROLL_B
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105 };
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106
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107 //Mode reg 1
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108 #define BIT_VSCRL_LOCK 0x80
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109 #define BIT_HSCRL_LOCK 0x40
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110 #define BIT_COL0_MASK 0x20
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111 #define BIT_HINT_EN 0x10
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112 #define BIT_SPRITE_8PX 0x08
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113 #define BIT_PAL_SEL 0x04
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114 #define BIT_MODE_4 BIT_PAL_SEL
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115 #define BIT_HVC_LATCH 0x02
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116 #define BIT_M3 BIT_HVC_LATCH
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117 #define BIT_DISP_DIS 0x01
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118
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119 //Mode reg 2
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120 #define BIT_128K_VRAM 0x80
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121 #define BIT_16K_VRAM BIT_128K_VRAM
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122 #define BIT_DISP_EN 0x40
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123 #define BIT_VINT_EN 0x20
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124 #define BIT_DMA_ENABLE 0x10
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125 #define BIT_M1 BIT_DMA_ENABLE
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126 #define BIT_PAL 0x08
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127 #define BIT_M2 BIT_PAL
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128 #define BIT_MODE_5 0x04
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129 #define BIT_SPRITE_SZ 0x02
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130 #define BIT_SPRITE_ZM 0x01
413
36fbbced25c2 Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents: 337
diff changeset
131
36fbbced25c2 Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents: 337
diff changeset
132 //Mode reg 3
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2009
diff changeset
133 #define BIT_EINT_EN 0x08
413
36fbbced25c2 Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents: 337
diff changeset
134 #define BIT_VSCROLL 0x04
36fbbced25c2 Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents: 337
diff changeset
135
36fbbced25c2 Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents: 337
diff changeset
136 //Mode reg 4
36fbbced25c2 Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents: 337
diff changeset
137 #define BIT_H40 0x01
36fbbced25c2 Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents: 337
diff changeset
138 #define BIT_HILIGHT 0x8
36fbbced25c2 Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents: 337
diff changeset
139 #define BIT_DOUBLE_RES 0x4
36fbbced25c2 Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents: 337
diff changeset
140 #define BIT_INTERLACE 0x2
36fbbced25c2 Initial work on interlace
Mike Pavone <pavone@retrodev.com>
parents: 337
diff changeset
141
1322
b1423d432c0e Initial stab at implementing the output disable/layer selection bits of the VDP test register
Michael Pavone <pavone@retrodev.com>
parents: 1318
diff changeset
142 //Test register
b1423d432c0e Initial stab at implementing the output disable/layer selection bits of the VDP test register
Michael Pavone <pavone@retrodev.com>
parents: 1318
diff changeset
143 #define TEST_BIT_DISABLE 0x40
b1423d432c0e Initial stab at implementing the output disable/layer selection bits of the VDP test register
Michael Pavone <pavone@retrodev.com>
parents: 1318
diff changeset
144
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
145 typedef struct {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
146 uint16_t address;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
147 int16_t x_pos;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
148 uint8_t pal_priority;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
149 uint8_t h_flip;
1866
84f16a804ce5 Rework sprite rendering phase 3 to better match behavior documented by Kabuto/Titan and fix edge case in sprite overflow flag that was breaking the RPS minigame in Alex Kidd
Michael Pavone <pavone@retrodev.com>
parents: 1821
diff changeset
150 uint8_t width;
84f16a804ce5 Rework sprite rendering phase 3 to better match behavior documented by Kabuto/Titan and fix edge case in sprite overflow flag that was breaking the RPS minigame in Alex Kidd
Michael Pavone <pavone@retrodev.com>
parents: 1821
diff changeset
151 uint8_t height;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
152 } sprite_draw;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
153
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
154 typedef struct {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
155 uint8_t size;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
156 uint8_t index;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
157 int16_t y;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
158 } sprite_info;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
159
471
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents: 470
diff changeset
160 #define FIFO_SIZE 4
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents: 470
diff changeset
161
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
162 typedef struct {
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
163 uint32_t cycle;
1318
bfdd450e7dea Initial work on handling the 128KB VRAM mode bit and some basic prep work for VDP test register support
Michael Pavone <pavone@retrodev.com>
parents: 1267
diff changeset
164 uint32_t address;
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
165 uint16_t value;
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
166 uint8_t cd;
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
167 uint8_t partial;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
168 } fifo_entry;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
169
1631
c4ba3177b72d WIP new VDP plane debug view and support for detached VDP debug views generally
Michael Pavone <pavone@retrodev.com>
parents: 1629
diff changeset
170 enum {
2194
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2040
diff changeset
171 VDP_GENESIS,
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2040
diff changeset
172 VDP_GAMEGEAR,
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2040
diff changeset
173 VDP_SMS2,
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2040
diff changeset
174 VDP_SMS,
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2040
diff changeset
175 VDP_TMS9918A
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2040
diff changeset
176 };
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2040
diff changeset
177
2358
4b2ac43c106e Give debugger expression engine access to VDP and Sub CPU values. Add basic variable support
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
178 typedef struct vdp_context vdp_context;
2361
3350b3c8faa8 Initial implementation of VDP register write breakpoints
Michael Pavone <pavone@retrodev.com>
parents: 2359
diff changeset
179 typedef void (*vdp_hook)(vdp_context *);
3350b3c8faa8 Initial implementation of VDP register write breakpoints
Michael Pavone <pavone@retrodev.com>
parents: 2359
diff changeset
180 typedef void (*vdp_reg_hook)(vdp_context *, uint16_t reg, uint16_t value);
3350b3c8faa8 Initial implementation of VDP register write breakpoints
Michael Pavone <pavone@retrodev.com>
parents: 2359
diff changeset
181 typedef void (*vdp_data_hook)(vdp_context *, uint16_t value);
2358
4b2ac43c106e Give debugger expression engine access to VDP and Sub CPU values. Add basic variable support
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
182
4b2ac43c106e Give debugger expression engine access to VDP and Sub CPU values. Add basic variable support
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
183 struct vdp_context {
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
184 system_header *system;
1077
1a66d5165ea7 Cleanup the separation of render backend and VDP code in preparation for having extra debug windows. Make determination of H40/H32 based on number of lines in each mode.
Michael Pavone <pavone@retrodev.com>
parents: 1019
diff changeset
185 //pointer to current line in framebuffer
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
186 uint32_t *output;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
187 //pointer to current framebuffer
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
188 uint32_t *fb;
1821
4f3443ecb6d6 Separate compositing from final output. Fixes some minor accuracy issues with regards to when background color reg/CRAM changes take effect. Fixes minor glitch in DF Retro Direct Color DMA demo at inactive/active transition
Michael Pavone <pavone@retrodev.com>
parents: 1652
diff changeset
189 uint8_t *done_composite;
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2236
diff changeset
190 uint32_t *debug_fbs[NUM_DEBUG_TYPES];
2009
4ace0fef6f8f Add support for the parts of the KMod debug ports used by SGDK
Mike Pavone <pavone@retrodev.com>
parents: 2000
diff changeset
191 char *kmod_msg_buffer;
2358
4b2ac43c106e Give debugger expression engine access to VDP and Sub CPU values. Add basic variable support
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
192 vdp_hook dma_hook;
2361
3350b3c8faa8 Initial implementation of VDP register write breakpoints
Michael Pavone <pavone@retrodev.com>
parents: 2359
diff changeset
193 vdp_reg_hook reg_hook;
3350b3c8faa8 Initial implementation of VDP register write breakpoints
Michael Pavone <pavone@retrodev.com>
parents: 2359
diff changeset
194 vdp_data_hook data_hook;
2009
4ace0fef6f8f Add support for the parts of the KMod debug ports used by SGDK
Mike Pavone <pavone@retrodev.com>
parents: 2000
diff changeset
195 uint32_t kmod_buffer_storage;
4ace0fef6f8f Add support for the parts of the KMod debug ports used by SGDK
Mike Pavone <pavone@retrodev.com>
parents: 2000
diff changeset
196 uint32_t kmod_buffer_length;
4ace0fef6f8f Add support for the parts of the KMod debug ports used by SGDK
Mike Pavone <pavone@retrodev.com>
parents: 2000
diff changeset
197 uint32_t timer_start_cycle;
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
198 uint32_t output_pitch;
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2236
diff changeset
199 uint32_t debug_fb_pitch[NUM_DEBUG_TYPES];
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
200 fifo_entry fifo[FIFO_SIZE];
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
201 int32_t fifo_write;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
202 int32_t fifo_read;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
203 uint32_t address;
1925
039553703c20 Don't apply address and cd register changes to the 'live' registers until pending flag is cleared, but do preserve the upper address bits in the latch. Fixes regression in Overdrive 2 while preserving fix to Mona in 344 bytes
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
204 uint32_t address_latch;
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
205 uint32_t serial_address;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
206 uint32_t colors[CRAM_SIZE*4];
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
207 uint32_t debugcolors[1 << (3 + 1 + 1 + 1)];//3 bits for source, 1 bit for priority, 1 bit for shadow, 1 bit for hilight
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
208 uint16_t cram[CRAM_SIZE];
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
209 uint32_t frame;
1906
2d462aa78349 Make VDP VSRAM capacity respect model selection
Michael Pavone <pavone@retrodev.com>
parents: 1890
diff changeset
210 uint32_t vsram_size;
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
211 uint8_t cd;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
212 uint8_t flags;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
213 uint8_t regs[VDP_REGS];
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
214 //cycle count in MCLKs
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
215 uint32_t cycles;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
216 uint32_t pending_vint_start;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
217 uint32_t pending_hint_start;
1881
55198fc9cc1f Don't render lines that are cropped by overscan. Allows submitting frame earlier when bottom overscan is non-zero which can reduce latency in some cases
Mike Pavone <pavone@retrodev.com>
parents: 1872
diff changeset
218 uint32_t top_offset;
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2223
diff changeset
219 uint32_t read_latency;
1906
2d462aa78349 Make VDP VSRAM capacity respect model selection
Michael Pavone <pavone@retrodev.com>
parents: 1890
diff changeset
220 uint16_t vsram[MAX_VSRAM_SIZE];
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
221 uint16_t vscroll_latch[2];
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
222 uint16_t vcounter;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
223 uint16_t inactive_start;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
224 uint16_t border_top;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
225 uint16_t border_bot;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
226 uint16_t hscroll_a;
1885
4178ce857e87 Calculate fine scroll once per line for a small speedup
Michael Pavone <pavone@retrodev.com>
parents: 1881
diff changeset
227 uint16_t hscroll_a_fine;
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
228 uint16_t hscroll_b;
1885
4178ce857e87 Calculate fine scroll once per line for a small speedup
Michael Pavone <pavone@retrodev.com>
parents: 1881
diff changeset
229 uint16_t hscroll_b_fine;
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
230 uint16_t h40_lines;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
231 uint16_t output_lines;
1866
84f16a804ce5 Rework sprite rendering phase 3 to better match behavior documented by Kabuto/Titan and fix edge case in sprite overflow flag that was breaking the RPS minigame in Alex Kidd
Michael Pavone <pavone@retrodev.com>
parents: 1821
diff changeset
232 sprite_draw sprite_draw_list[MAX_SPRITES_LINE];
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
233 sprite_info sprite_info_list[MAX_SPRITES_LINE];
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
234 uint8_t sat_cache[SAT_CACHE_SIZE];
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
235 uint16_t col_1;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
236 uint16_t col_2;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
237 uint16_t hv_latch;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
238 uint16_t prefetch;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
239 uint16_t test_port;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
240 //stores 2-bit palette + 4-bit palette index + priority for current sprite line
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
241 uint8_t linebuf[LINEBUF_SIZE];
1821
4f3443ecb6d6 Separate compositing from final output. Fixes some minor accuracy issues with regards to when background color reg/CRAM changes take effect. Fixes minor glitch in DF Retro Direct Color DMA demo at inactive/active transition
Michael Pavone <pavone@retrodev.com>
parents: 1652
diff changeset
242 uint8_t compositebuf[LINEBUF_SIZE];
1641
bc9bb4e5856f Basic version of layer compositing debug view in a separate window
Michael Pavone <pavone@retrodev.com>
parents: 1640
diff changeset
243 uint8_t layer_debug_buf[LINEBUF_SIZE];
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
244 uint8_t hslot; //hcounter/2
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
245 uint8_t sprite_index;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
246 uint8_t sprite_draws;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
247 int8_t slot_counter;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
248 int8_t cur_slot;
1872
45be49d3a98b Forgot to commit the header changes
Michael Pavone <pavone@retrodev.com>
parents: 1869
diff changeset
249 uint8_t sprite_x_offset;
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
250 uint8_t max_sprites_frame;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
251 uint8_t max_sprites_line;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
252 uint8_t fetch_tmp[2];
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
253 uint8_t v_offset;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
254 uint8_t hint_counter;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
255 uint8_t flags2;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
256 uint8_t double_res;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
257 uint8_t buf_a_off;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
258 uint8_t buf_b_off;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
259 uint8_t pending_byte;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
260 uint8_t state;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
261 uint8_t cur_buffer;
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
262 uint8_t tmp_buf_a[SCROLL_BUFFER_SIZE];
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
263 uint8_t tmp_buf_b[SCROLL_BUFFER_SIZE];
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
264 uint8_t enabled_debuggers;
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2236
diff changeset
265 uint8_t debug_fb_indices[NUM_DEBUG_TYPES];
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2236
diff changeset
266 uint8_t debug_modes[NUM_DEBUG_TYPES];
1890
7bb4081e9e52 Hopefully final fix for line advancement/frame end calculation
Michael Pavone <pavone@retrodev.com>
parents: 1885
diff changeset
267 uint8_t pushed_frame;
2194
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2040
diff changeset
268 uint8_t type;
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2040
diff changeset
269 uint8_t cram_latch;
2236
c149c929361c Fix color bug when switching between Game Gear and other Sega systems
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
270 int32_t color_map[1 << 12];
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1638
diff changeset
271 uint8_t vdpmem[];
2358
4b2ac43c106e Give debugger expression engine access to VDP and Sub CPU values. Add basic variable support
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
272 };
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
273
1631
c4ba3177b72d WIP new VDP plane debug view and support for detached VDP debug views generally
Michael Pavone <pavone@retrodev.com>
parents: 1629
diff changeset
274
c4ba3177b72d WIP new VDP plane debug view and support for detached VDP debug views generally
Michael Pavone <pavone@retrodev.com>
parents: 1629
diff changeset
275
2194
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2040
diff changeset
276 vdp_context *init_vdp_context(uint8_t region_pal, uint8_t has_max_vsram, uint8_t type);
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 722
diff changeset
277 void vdp_free(vdp_context *context);
1371
5b20840711c1 Remove HINT_FUDGE and make a small adjustment to how VDP syncs with rest of system instead. Worse results on CRAM dot issue, but much less of a hack
Michael Pavone <pavone@retrodev.com>
parents: 1343
diff changeset
278 void vdp_run_context_full(vdp_context * context, uint32_t target_cycles);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
279 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
280 //runs from current cycle count to VBLANK for the current mode, returns ending cycle count
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
281 uint32_t vdp_run_to_vblank(vdp_context * context);
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
282 //runs until the target cycle is reached or the current DMA operation has completed, whicever comes first
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
283 void vdp_run_dma_done(vdp_context * context, uint32_t target_cycles);
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 413
diff changeset
284 uint8_t vdp_load_gst(vdp_context * context, FILE * state_file);
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 437
diff changeset
285 uint8_t vdp_save_gst(vdp_context * context, FILE * outfile);
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2223
diff changeset
286 int vdp_control_port_write(vdp_context * context, uint16_t value, uint32_t cpu_cycle);
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1102
diff changeset
287 void vdp_control_port_write_pbc(vdp_context * context, uint8_t value);
149
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 138
diff changeset
288 int vdp_data_port_write(vdp_context * context, uint16_t value);
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1102
diff changeset
289 void vdp_data_port_write_pbc(vdp_context * context, uint8_t value);
470
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents: 467
diff changeset
290 void vdp_test_port_write(vdp_context * context, uint16_t value);
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
291 uint16_t vdp_control_port_read(vdp_context * context);
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2223
diff changeset
292 uint16_t vdp_data_port_read(vdp_context * context, uint32_t *cpu_cycle, uint32_t cpu_divider);
1149
6b0da6021544 Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions
Michael Pavone <pavone@retrodev.com>
parents: 1135
diff changeset
293 uint8_t vdp_data_port_read_pbc(vdp_context * context);
1154
c83ec07ddbac Implemented Mode 4 H conter latching
Michael Pavone <pavone@retrodev.com>
parents: 1149
diff changeset
294 void vdp_latch_hv(vdp_context *context);
137
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 131
diff changeset
295 uint16_t vdp_hv_counter_read(vdp_context * context);
65
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 56
diff changeset
296 void vdp_adjust_cycles(vdp_context * context, uint32_t deduction);
317
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 230
diff changeset
297 uint32_t vdp_next_hint(vdp_context * context);
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 230
diff changeset
298 uint32_t vdp_next_vint(vdp_context * context);
333
f16136a3835d Update Z80 vint timing
Mike Pavone <pavone@retrodev.com>
parents: 327
diff changeset
299 uint32_t vdp_next_vint_z80(vdp_context * context);
1377
e587f16e7d3d Implemented SMS pause button
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
300 uint32_t vdp_next_nmi(vdp_context *context);
953
08346262990b Remove the int number argument to vdp_int_ack since it is no longer used
Michael Pavone <pavone@retrodev.com>
parents: 922
diff changeset
301 void vdp_int_ack(vdp_context * context);
322
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview.
Mike Pavone <pavone@retrodev.com>
parents: 317
diff changeset
302 void vdp_print_sprite_table(vdp_context * context);
327
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents: 322
diff changeset
303 void vdp_print_reg_explain(vdp_context * context);
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 437
diff changeset
304 void latch_mode(vdp_context * context);
623
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents: 622
diff changeset
305 uint32_t vdp_cycles_to_frame_end(vdp_context * context);
1428
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
306 void write_cram_internal(vdp_context * context, uint16_t addr, uint16_t value);
1333
69c25e1188e5 Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents: 1325
diff changeset
307 void vdp_check_update_sat_byte(vdp_context *context, uint32_t address, uint8_t value);
1377
e587f16e7d3d Implemented SMS pause button
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
308 void vdp_pbc_pause(vdp_context *context);
1401
b56c8c51ca5d Properly release and reacquire framebuffer pointer when switching contexts. Hopefully fixes the LOCKRECT issue some people are seeing with the SDL 2 fallback renderer
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
309 void vdp_release_framebuffer(vdp_context *context);
b56c8c51ca5d Properly release and reacquire framebuffer pointer when switching contexts. Hopefully fixes the LOCKRECT issue some people are seeing with the SDL 2 fallback renderer
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
310 void vdp_reacquire_framebuffer(vdp_context *context);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1401
diff changeset
311 void vdp_serialize(vdp_context *context, serialize_buffer *buf);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1401
diff changeset
312 void vdp_deserialize(deserialize_buffer *buf, void *vcontext);
1629
079e5b9d59ce Forcefully update the display when entering the 68K debugger so you can see it update in realtime as you step through the code
Michael Pavone <pavone@retrodev.com>
parents: 1436
diff changeset
313 void vdp_force_update_framebuffer(vdp_context *context);
1631
c4ba3177b72d WIP new VDP plane debug view and support for detached VDP debug views generally
Michael Pavone <pavone@retrodev.com>
parents: 1629
diff changeset
314 void vdp_toggle_debug_view(vdp_context *context, uint8_t debug_type);
c4ba3177b72d WIP new VDP plane debug view and support for detached VDP debug views generally
Michael Pavone <pavone@retrodev.com>
parents: 1629
diff changeset
315 void vdp_inc_debug_mode(vdp_context *context);
1649
b500e971da75 Allow closing VDP debug windows with the close button in the window title bar
Michael Pavone <pavone@retrodev.com>
parents: 1643
diff changeset
316 //to be implemented by the host system
b500e971da75 Allow closing VDP debug windows with the close button in the window title bar
Michael Pavone <pavone@retrodev.com>
parents: 1643
diff changeset
317 uint16_t read_dma_value(uint32_t address);
2336
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2257
diff changeset
318 void vdp_dma_started(void);
1946
c3c62dbf1ceb WIP netplay support
Michael Pavone <pavone@retrodev.com>
parents: 1925
diff changeset
319 void vdp_replay_event(vdp_context *context, uint8_t event, event_reader *reader);
2358
4b2ac43c106e Give debugger expression engine access to VDP and Sub CPU values. Add basic variable support
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
320 uint16_t vdp_status(vdp_context *context);
2359
04d29635d238 Support for arrays in debugger language
Michael Pavone <pavone@retrodev.com>
parents: 2358
diff changeset
321 void vdp_reg_write(vdp_context *context, uint16_t reg, uint16_t value);
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 437
diff changeset
322
2411
efd2242c2c23 Fix silly TMS9918A bug, make CRAM viewer sorta useful in TMS9918A modes, make mode4 address map externally viewable for debugger
Michael Pavone <pavone@retrodev.com>
parents: 2361
diff changeset
323 extern uint16_t mode4_address_map[0x4000];
efd2242c2c23 Fix silly TMS9918A bug, make CRAM viewer sorta useful in TMS9918A modes, make mode4 address map externally viewable for debugger
Michael Pavone <pavone@retrodev.com>
parents: 2361
diff changeset
324
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
325 #endif //VDP_H_