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https://github.com/gbdk-2020/gbdk-2020.git
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162 lines
4.0 KiB
C
162 lines
4.0 KiB
C
/** @file msx/hardware.h
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Defines that let the MSX hardware registers be accessed
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from C.
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*/
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#ifndef _HARDWARE_H
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#define _HARDWARE_H
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#include <types.h>
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#define __BYTES extern UBYTE
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#define __BYTE_REG extern volatile UBYTE
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static volatile SFR AT(0x7E) VCOUNTER;
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static volatile SFR AT(0x7F) PSG;
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#define PSG_LATCH 0x80
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#define PSG_CH0 0b00000000
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#define PSG_CH1 0b00100000
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#define PSG_CH2 0b01000000
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#define PSG_CH3 0b01100000
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#define PSG_VOLUME 0b00010000
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static volatile SFR AT(0x7F) HCOUNTER;
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static volatile SFR AT(0x98) VDP_DATA;
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static volatile SFR AT(0x99) VDP_CMD;
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static volatile SFR AT(0x99) VDP_STATUS;
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#define STATF_INT_VBL 0b10000000
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#define STATF_9_SPR 0b01000000
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#define STATF_SPR_COLL 0b00100000
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#define VDP_REG_MASK 0b10000000
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#define VDP_R0 0b10000000
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extern UBYTE shadow_VDP_R0;
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#define R0_DEFAULT 0b00000000
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#define R0_CB_OUTPUT 0b00000000
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#define R0_CB_INPUT 0b01000000
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#define R0_IE2_OFF 0b00000000
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#define R0_IE2 0b00100000
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#define R0_IE1_OFF 0b00000000
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#define R0_IE1 0b00010000
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#define R0_SCR_MODE1 0b00000000
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#define R0_SCR_MODE2 0b00000010
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#define R0_SCR_MODE3 0b00000100
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#define R0_ES_OFF 0b00000000
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#define R0_ES 0b00000001
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#define VDP_R1 0b10000001
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extern UBYTE shadow_VDP_R1;
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#define R1_DEFAULT 0b10000000
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#define R1_DISP_OFF 0b00000000
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#define R1_DISP_ON 0b01000000
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#define R1_IE_OFF 0b00000000
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#define R1_IE 0b00100000
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#define R1_SCR_MODE1 0b00010000
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#define R1_SCR_MODE2 0b00000000
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#define R1_SCR_MODE3 0b00000000
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#define R1_SPR_8X8 0b00000000
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#define R1_SPR_16X16 0b00000010
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#define R1_SPR_MAG 0b00000001
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#define R1_SPR_MAG_OFF 0b00000000
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#define VDP_R2 0b10000010
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extern UBYTE shadow_VDP_R2;
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#define R2_MAP_0x3800 0xFF
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#define R2_MAP_0x3000 0xFD
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#define R2_MAP_0x2800 0xFB
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#define R2_MAP_0x2000 0xF9
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#define R2_MAP_0x1800 0xF7
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#define R2_MAP_0x1000 0xF5
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#define R2_MAP_0x0800 0xF3
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#define R2_MAP_0x0000 0xF1
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#define VDP_R3 0b10000011
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extern UBYTE shadow_VDP_R3;
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#define VDP_R4 0b10000100
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extern UBYTE shadow_VDP_R4;
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#define VDP_R5 0b10000101
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extern UBYTE shadow_VDP_R5;
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#define R5_SAT_0x3F00 0xFF
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#define R5_SAT_MASK 0b10000001
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#define VDP_R6 0b10000110
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extern UBYTE shadow_VDP_R6;
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#define R6_BANK0 0xFB
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#define R6_DATA_0x0000 0xFB
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#define R6_BANK1 0xFF
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#define R6_DATA_0x2000 0xFF
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#define VDP_R7 0b10000111
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extern UBYTE shadow_VDP_R7;
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#define VDP_RBORDER 0b10000111
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extern UBYTE shadow_VDP_RBORDER;
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#define R7_COLOR_MASK 0b11110000
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#define VDP_R8 0b10001000
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extern UBYTE shadow_VDP_R8;
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#define VDP_RSCX 0b10001000
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extern UBYTE shadow_VDP_RSCX;
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#define VDP_R9 0b10001001
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extern UBYTE shadow_VDP_R9;
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#define VDP_RSCY 0b10001001
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extern UBYTE shadow_VDP_RSCY;
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#define VDP_R10 0b10001010
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extern UBYTE shadow_VDP_R10;
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#define R10_INT_OFF 0xFF
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#define R10_INT_EVERY 0x00
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static volatile SFR AT(0xF0) FMADDRESS;
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static volatile SFR AT(0xF1) FMDATA;
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static volatile SFR AT(0xF2) AUDIOCTRL;
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static volatile SFR AT(0xfc) MAP_FRAME0;
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static volatile SFR AT(0xfd) MAP_FRAME1;
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static volatile SFR AT(0xfe) MAP_FRAME2;
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static volatile SFR AT(0xff) MAP_FRAME3;
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extern const UBYTE _SYSTEM;
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#define SYSTEM_PAL 0x00
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#define SYSTEM_NTSC 0x01
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extern volatile UBYTE VDP_ATTR_SHIFT;
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#define VBK_TILES 0
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#define VBK_ATTRIBUTES 1
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#define VDP_SAT_TERM 0xD0
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#if defined(__TARGET_msxdos)
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#define DEVICE_SCREEN_X_OFFSET 0
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#define DEVICE_SCREEN_Y_OFFSET 0
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#define DEVICE_SCREEN_WIDTH 32
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#define DEVICE_SCREEN_HEIGHT 24
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#define DEVICE_SCREEN_BUFFER_WIDTH 32
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#define DEVICE_SCREEN_BUFFER_HEIGHT 28
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#define DEVICE_SCREEN_MAP_ENTRY_SIZE 2
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#define DEVICE_SPRITE_PX_OFFSET_X 0
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#define DEVICE_SPRITE_PX_OFFSET_Y -1
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#define DEVICE_WINDOW_PX_OFFSET_X 0
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#define DEVICE_WINDOW_PX_OFFSET_Y 0
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#else
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#error Unrecognized port
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#endif
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#define DEVICE_SCREEN_PX_WIDTH (DEVICE_SCREEN_WIDTH * 8)
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#define DEVICE_SCREEN_PX_HEIGHT (DEVICE_SCREEN_HEIGHT * 8)
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#endif
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