GBDK 2020 Docs  4.1.1
API Documentation for GBDK 2020
hardware.h
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1 
5 #ifndef _HARDWARE_H
6 #define _HARDWARE_H
7 
8 #include <types.h>
9 
10 #define __BYTES extern UBYTE
11 #define __BYTE_REG extern volatile UBYTE
12 
13 static volatile SFR AT(0x3E) MEMORY_CTL;
14 
15 #define MEMCTL_JOYON 0b00000000
16 #define MEMCTL_JOYOFF 0b00000100
17 #define MEMCTL_BASEON 0b00000000
18 #define MEMCTL_BASEOFF 0b00001000
19 #define MEMCTL_RAMON 0b00000000
20 #define MEMCTL_RAMOFF 0b00010000
21 #define MEMCTL_CROMON 0b00000000
22 #define MEMCTL_CROMOFF 0b00100000
23 #define MEMCTL_ROMON 0b00000000
24 #define MEMCTL_ROMOFF 0b01000000
25 #define MEMCTL_EXTON 0b00000000
26 #define MEMCTL_EXTOFF 0b10000000
27 
28 static volatile SFR AT(0x3F) JOY_CTL;
29 
30 #define JOY_P1_LATCH 0b00000010
31 #define JOY_P2_LATCH 0b00001000
32 
33 static volatile SFR AT(0x7E) VCOUNTER;
34 
35 static volatile SFR AT(0x7F) PSG;
36 
37 #define PSG_LATCH 0x80
38 
39 #define PSG_CH0 0b00000000
40 #define PSG_CH1 0b00100000
41 #define PSG_CH2 0b01000000
42 #define PSG_CH3 0b01100000
43 
44 #define PSG_VOLUME 0b00010000
45 
46 static volatile SFR AT(0x7F) HCOUNTER;
47 
48 static volatile SFR AT(0xBE) VDP_DATA;
49 static volatile SFR AT(0xBF) VDP_CMD;
50 static volatile SFR AT(0xBF) VDP_STATUS;
51 
52 #define STATF_INT_VBL 0b10000000
53 #define STATF_9_SPR 0b01000000
54 #define STATF_SPR_COLL 0b00100000
55 
56 #define VDP_REG_MASK 0b10000000
57 #define VDP_R0 0b10000000
58 extern UBYTE shadow_VDP_R0;
59 
60 #define R0_VSCRL 0b00000000
61 #define R0_VSCRL_INH 0b10000000
62 #define R0_HSCRL 0b00000000
63 #define R0_HSCRL_INH 0b01000000
64 #define R0_NO_LCB 0b00000000
65 #define R0_LCB 0b00100000
66 #define R0_IE1_OFF 0b00000000
67 #define R0_IE1 0b00010000
68 #define R0_SS_OFF 0b00000000
69 #define R0_SS 0b00001000
70 #define R0_DEFAULT 0b00000110
71 #define R0_ES_OFF 0b00000000
72 #define R0_ES 0b00000001
73 
74 #define VDP_R1 0b10000001
75 extern UBYTE shadow_VDP_R1;
76 
77 #define R1_DEFAULT 0b10000000
78 #define R1_DISP_OFF 0b00000000
79 #define R1_DISP_ON 0b01000000
80 #define R1_IE_OFF 0b00000000
81 #define R1_IE 0b00100000
82 #define R1_SPR_8X8 0b00000000
83 #define R1_SPR_8X16 0b00000010
84 
85 #define VDP_R2 0b10000010
86 extern UBYTE shadow_VDP_R2;
87 
88 #define R2_MAP_0x3800 0xFF
89 #define R2_MAP_0x3000 0xFD
90 #define R2_MAP_0x2800 0xFB
91 #define R2_MAP_0x2000 0xF9
92 #define R2_MAP_0x1800 0xF7
93 #define R2_MAP_0x1000 0xF5
94 #define R2_MAP_0x0800 0xF3
95 #define R2_MAP_0x0000 0xF1
96 
97 #define VDP_R3 0b10000011
98 extern UBYTE shadow_VDP_R3;
99 #define VDP_R4 0b10000100
100 extern UBYTE shadow_VDP_R4;
101 #define VDP_R5 0b10000101
102 extern UBYTE shadow_VDP_R5;
103 
104 #define R5_SAT_0x3F00 0xFF
105 #define R5_SAT_MASK 0b10000001
106 
107 #define VDP_R6 0b10000110
108 extern UBYTE shadow_VDP_R6;
109 
110 #define R6_BANK0 0xFB
111 #define R6_DATA_0x0000 0xFB
112 #define R6_BANK1 0xFF
113 #define R6_DATA_0x2000 0xFF
114 
115 #define VDP_R7 0b10000111
116 extern UBYTE shadow_VDP_R7;
117 #define VDP_RBORDER 0b10000111
119 
120 #define R7_COLOR_MASK 0b11110000
121 
122 #define VDP_R8 0b10001000
123 extern UBYTE shadow_VDP_R8;
124 #define VDP_RSCX 0b10001000
125 extern UBYTE shadow_VDP_RSCX;
126 
127 #define VDP_R9 0b10001001
128 extern UBYTE shadow_VDP_R9;
129 #define VDP_RSCY 0b10001001
130 extern UBYTE shadow_VDP_RSCY;
131 
132 #define VDP_R10 0b10001010
133 extern UBYTE shadow_VDP_R10;
134 
135 #define R10_INT_OFF 0xFF
136 #define R10_INT_EVERY 0x00
137 
138 static volatile SFR AT(0xDC) JOY_PORT1;
139 
140 #define JOY_P1_UP 0b00000001
141 #define JOY_P1_DOWN 0b00000010
142 #define JOY_P1_LEFT 0b00000100
143 #define JOY_P1_RIGHT 0b00001000
144 #define JOY_P1_SW1 0b00010000
145 #define JOY_P1_TRIGGER 0b00010000
146 #define JOY_P1_SW2 0b00100000
147 #define JOY_P2_UP 0b01000000
148 #define JOY_P2_DOWN 0b10000000
149 
150 static volatile SFR AT(0xDD) JOY_PORT2;
151 
152 #define JOY_P2_LEFT 0b00000001
153 #define JOY_P2_RIGHT 0b00000010
154 #define JOY_P2_SW1 0b00000100
155 #define JOY_P2_TRIGGER 0b00000100
156 #define JOY_P2_SW2 0b00001000
157 #define JOY_RESET 0b00010000
158 #define JOY_P1_LIGHT 0b01000000
159 #define JOY_P2_LIGHT 0b10000000
160 
161 static volatile SFR AT(0xF0) FMADDRESS;
162 static volatile SFR AT(0xF1) FMDATA;
163 static volatile SFR AT(0xF2) AUDIOCTRL;
164 
165 static volatile UBYTE AT(0xfffc) RAM_CONTROL;
166 
167 #define RAMCTL_BANK 0b00000100
168 #define RAMCTL_ROM 0b00000000
169 #define RAMCTL_RAM 0b00001000
170 #define RAMCTL_RO 0b00010000
171 #define RAMCTL_PROT 0b10000000
172 
173 static volatile UBYTE AT(0xfff8) GLASSES_3D;
174 
175 static volatile UBYTE AT(0xfffd) MAP_FRAME0;
176 static volatile UBYTE AT(0xfffe) MAP_FRAME1;
177 static volatile UBYTE AT(0xffff) MAP_FRAME2;
178 
179 extern const UBYTE _BIOS;
180 
181 extern const UBYTE _SYSTEM;
182 
183 #define SYSTEM_PAL 0x00
184 #define SYSTEM_NTSC 0x01
185 
186 extern volatile UBYTE VDP_ATTR_SHIFT;
187 
188 #define VBK_TILES 0
189 #define VBK_ATTRIBUTES 1
190 
191 #define VDP_SAT_TERM 0xD0
192 
193 #if defined(__TARGET_sms)
194 #define DEVICE_SCREEN_X_OFFSET 0
195 #define DEVICE_SCREEN_Y_OFFSET 0
196 #define DEVICE_SCREEN_WIDTH 32
197 #define DEVICE_SCREEN_HEIGHT 24
198 #define DEVICE_SCREEN_BUFFER_WIDTH 32
199 #define DEVICE_SCREEN_BUFFER_HEIGHT 28
200 #define DEVICE_SCREEN_MAP_ENTRY_SIZE 2
201 #define DEVICE_SPRITE_PX_OFFSET_X 0
202 #define DEVICE_SPRITE_PX_OFFSET_Y -1
203 #define DEVICE_WINDOW_PX_OFFSET_X 0
204 #define DEVICE_WINDOW_PX_OFFSET_Y 0
205 #elif defined(__TARGET_gg)
206 #define DEVICE_SCREEN_X_OFFSET 6
207 #define DEVICE_SCREEN_Y_OFFSET 3
208 #define DEVICE_SCREEN_WIDTH 20
209 #define DEVICE_SCREEN_HEIGHT 18
210 #define DEVICE_SCREEN_BUFFER_WIDTH 32
211 #define DEVICE_SCREEN_BUFFER_HEIGHT 28
212 #define DEVICE_SCREEN_MAP_ENTRY_SIZE 2
213 #define DEVICE_SPRITE_PX_OFFSET_X 48
214 #define DEVICE_SPRITE_PX_OFFSET_Y 23
215 #define DEVICE_WINDOW_PX_OFFSET_X 0
216 #define DEVICE_WINDOW_PX_OFFSET_Y 0
217 #else
218 #error Unrecognized port
219 #endif
220 #define DEVICE_SCREEN_PX_WIDTH (DEVICE_SCREEN_WIDTH * 8)
221 #define DEVICE_SCREEN_PX_HEIGHT (DEVICE_SCREEN_HEIGHT * 8)
222 
223 #endif
UINT8 UBYTE
Definition: types.h:60
#define AT(A)
Definition: types.h:34
#define SFR
Definition: types.h:33
volatile UBYTE VDP_ATTR_SHIFT
UBYTE shadow_VDP_R9
UBYTE shadow_VDP_RBORDER
UBYTE shadow_VDP_R5
UBYTE shadow_VDP_RSCY
UBYTE shadow_VDP_R7
UBYTE shadow_VDP_R1
const UBYTE _SYSTEM
const UBYTE _BIOS
UBYTE shadow_VDP_R2
UBYTE shadow_VDP_R6
UBYTE shadow_VDP_R0
UBYTE shadow_VDP_R3
UBYTE shadow_VDP_R8
UBYTE shadow_VDP_R10
UBYTE shadow_VDP_RSCX
UBYTE shadow_VDP_R4