docs/api/sms_2hardware_8h_source.html

#ifndef _HARDWARE_H

#define _HARDWARE_H


#include <types.h>


#define __BYTES extern UBYTE

#define __BYTE_REG extern volatile UBYTE


static volatile __sfr __at(0x3E) MEMORY_CTL;


#define MEMCTL_JOYON   0b00000000

#define MEMCTL_JOYOFF  0b00000100

#define MEMCTL_BASEON  0b00000000

#define MEMCTL_BASEOFF 0b00001000

#define MEMCTL_RAMON   0b00000000

#define MEMCTL_RAMOFF  0b00010000

#define MEMCTL_CROMON  0b00000000

#define MEMCTL_CROMOFF 0b00100000

#define MEMCTL_ROMON   0b00000000

#define MEMCTL_ROMOFF  0b01000000

#define MEMCTL_EXTON   0b00000000

#define MEMCTL_EXTOFF  0b10000000


static volatile __sfr __at(0x3F) JOY_CTL;


#define JOY_P1_LATCH   0b00000010

#define JOY_P2_LATCH   0b00001000


static volatile __sfr __at(0x7E) VCOUNTER;

static volatile __sfr __at(0x7F) PSG;

static volatile __sfr __at(0x7F) HCOUNTER;


static volatile __sfr __at(0xBE) VDP_DATA;

static volatile __sfr __at(0xBF) VDP_CMD;

static volatile __sfr __at(0xBF) VDP_STATUS;


#define STATF_INT_VBL  0b10000000

#define STATF_9_SPR    0b01000000

#define STATF_SPR_COLL 0b00100000


#define VDP_REG_MASK   0b10000000

#define VDP_R0         0b10000000

extern UBYTE shadow_VDP_R0;


#define R0_VSCRL       0b00000000

#define R0_VSCRL_INH   0b10000000

#define R0_HSCRL       0b00000000

#define R0_HSCRL_INH   0b01000000

#define R0_NO_LCB      0b00000000

#define R0_LCB         0b00100000

#define R0_IE1_OFF     0b00000000

#define R0_IE1         0b00010000

#define R0_SS_OFF      0b00000000

#define R0_SS          0b00001000

#define R0_DEFAULT     0b00000110

#define R0_ES_OFF      0b00000000

#define R0_ES          0b00000001


#define VDP_R1         0b10000001

extern UBYTE shadow_VDP_R1;


#define R1_DEFAULT     0b10000000

#define R1_DISP_OFF    0b00000000

#define R1_DISP_ON     0b01000000

#define R1_IE_OFF      0b00000000

#define R1_IE          0b00100000

#define R1_SPR_8X8     0b00000000

#define R1_SPR_8X16    0b00000010


#define VDP_R2         0b10000010

extern UBYTE shadow_VDP_R2;


#define R2_MAP_0x3800  0xFF

#define R2_MAP_0x3000  0xFD

#define R2_MAP_0x2800  0xFB

#define R2_MAP_0x2000  0xF9

#define R2_MAP_0x1800  0xF7

#define R2_MAP_0x1000  0xF5

#define R2_MAP_0x0800  0xF3

#define R2_MAP_0x0000  0xF1


#define VDP_R3         0b10000011

extern UBYTE shadow_VDP_R3;

#define VDP_R4         0b10000100

extern UBYTE shadow_VDP_R4;

#define VDP_R5         0b10000101

extern UBYTE shadow_VDP_R5;


#define R5_SAT_0x3F00  0xFF

#define R5_SAT_MASK    0b10000001


#define VDP_R6         0b10000110

extern UBYTE shadow_VDP_R6;


#define R6_BANK0       0xFB

#define R6_DATA_0x0000 0xFB

#define R6_BANK1       0xFF

#define R6_DATA_0x2000 0xFF


#define VDP_R7         0b10000111

extern UBYTE shadow_VDP_R7;

#define VDP_RBORDER    0b10000111

extern UBYTE shadow_VDP_RBORDER;


#define R7_COLOR_MASK  0b11110000


#define VDP_R8         0b10001000

extern UBYTE shadow_VDP_R8;

#define VDP_RSCX       0b10001000

extern UBYTE shadow_VDP_RSCX;


#define VDP_R9         0b10001001

extern UBYTE shadow_VDP_R9;

#define VDP_RSCY       0b10001001

extern UBYTE shadow_VDP_RSCY;


#define VDP_R10        0b10001010

extern UBYTE shadow_VDP_R10;


#define R10_INT_OFF    0xFF

#define R10_INT_EVERY  0x00


static volatile __sfr __at(0xDC) JOY_PORT1;


#define JOY_P1_UP      0b00000001

#define JOY_P1_DOWN    0b00000010

#define JOY_P1_LEFT    0b00000100

#define JOY_P1_RIGHT   0b00001000

#define JOY_P1_SW1     0b00010000

#define JOY_P1_TRIGGER 0b00010000

#define JOY_P1_SW2     0b00100000

#define JOY_P2_UP      0b01000000

#define JOY_P2_DOWN    0b10000000


static volatile __sfr __at(0xDD) JOY_PORT2;


#define JOY_P2_LEFT    0b00000001

#define JOY_P2_RIGHT   0b00000010

#define JOY_P2_SW1     0b00000100

#define JOY_P2_TRIGGER 0b00000100

#define JOY_P2_SW2     0b00001000

#define JOY_RESET      0b00010000

#define JOY_P1_LIGHT   0b01000000

#define JOY_P2_LIGHT   0b10000000


static volatile __sfr __at(0xF0) FMADDRESS;

static volatile __sfr __at(0xF1) FMDATA;

static volatile __sfr __at(0xF2) AUDIOCTRL;


static volatile UBYTE __at(0xfffc) RAM_CONTROL;


#define RAMCTL_BANK    0b00000100

#define RAMCTL_ROM     0b00000000

#define RAMCTL_RAM     0b00001000

#define RAMCTL_RO      0b00010000

#define RAMCTL_PROT    0b10000000


static volatile UBYTE __at(0xfff8) GLASSES_3D;


static volatile UBYTE __at(0xfffd) MAP_FRAME0;

static volatile UBYTE __at(0xfffe) MAP_FRAME1;

static volatile UBYTE __at(0xffff) MAP_FRAME2;


extern const UBYTE _BIOS;


extern const UBYTE _SYSTEM;


#define SYSTEM_PAL     0x00

#define SYSTEM_NTSC    0x01


extern volatile UBYTE VDP_ATTR_SHIFT;


#define VDP_SAT_TERM   0xD0


#if defined(__TARGET_sms)

#define DEVICE_SCREEN_X_OFFSET 0

#define DEVICE_SCREEN_Y_OFFSET 0

#define DEVICE_SCREEN_WIDTH 32

#define DEVICE_SCREEN_HEIGHT 24

#define DEVICE_SCREEN_BUFFER_WIDTH 32

#define DEVICE_SCREEN_BUFFER_HEIGHT 28

#define DEVICE_SCREEN_MAP_ENTRY_SIZE 2

#define DEVICE_SPRITE_PX_OFFSET_X 0

#define DEVICE_SPRITE_PX_OFFSET_Y -1

#elif defined(__TARGET_gg)

#define DEVICE_SCREEN_X_OFFSET 6

#define DEVICE_SCREEN_Y_OFFSET 3

#define DEVICE_SCREEN_WIDTH 20

#define DEVICE_SCREEN_HEIGHT 18

#define DEVICE_SCREEN_BUFFER_WIDTH 32

#define DEVICE_SCREEN_BUFFER_HEIGHT 28

#define DEVICE_SCREEN_MAP_ENTRY_SIZE 2

#define DEVICE_SPRITE_PX_OFFSET_X 48

#define DEVICE_SPRITE_PX_OFFSET_Y 23

#else

#error Unrecognized port

#endif

#define DEVICE_SCREEN_PX_WIDTH (DEVICE_SCREEN_WIDTH * 8)

#define DEVICE_SCREEN_PX_HEIGHT (DEVICE_SCREEN_HEIGHT * 8)


#endif