GBDK 2020 Docs 4.4.0 API Documentation for GBDK 2020

Macros | Variables
hardware.h File Reference
`#include <types.h>`

Go to the source code of this file.

## Macros
#define | __BYTES extern UBYTE
#define | __BYTE_REG extern volatile UBYTE
#define | GGSTATE_STT 0b10000000
#define | GGSTATE_NJAP 0b01000000
#define | GGSTATE_NNTS 0b00100000
#define | GGEXT_NINIT 0b10000000
#define | SIOCTL_TXFL 0b00000001
#define | SIOCTL_RXRD 0b00000010
#define | SIOCTL_FRER 0b00000100
#define | SIOCTL_INT 0b00001000
#define | SIOCTL_TON 0b00010000
#define | SIOCTL_RON 0b00100000
#define | SIOCTL_BS0 0b01000000
#define | SIOCTL_BS1 0b10000000
#define | SOUNDPAN_TN1R 0b00000001
#define | SOUNDPAN_TN2R 0b00000010
#define | SOUNDPAN_TN3R 0b00000100
#define | SOUNDPAN_NOSR 0b00001000
#define | SOUNDPAN_TN1L 0b00010000
#define | SOUNDPAN_TN2L 0b00100000
#define | SOUNDPAN_TN3L 0b01000000
#define | SOUNDPAN_NOSL 0b10000000
#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
#define | JOY_P1_TR_DIR_IN 0b00000001
#define | JOY_P1_TR_DIR_OUT 0b00000000
#define | JOY_P1_TH_DIR_IN 0b00000010
#define | GUN_P1_LATCH JOY_P1_TH_DIR_IN
#define | JOY_P1_TH_DIR_OUT 0b00000000
#define | JOY_P2_TR_DIR_IN 0b00000100
#define | JOY_P2_TR_DIR_OUT 0b00000000
#define | JOY_P2_TH_DIR_IN 0b00001000
#define | GUN_P2_LATCH JOY_P2_TH_DIR_IN
#define | JOY_P2_TH_DIR_OUT 0b00000000
#define | JOY_P1_TR_OUT_HI 0b00010000
#define | JOY_P1_TR_OUT_LO 0b00000000
#define | JOY_P1_TH_OUT_HI 0b00100000
#define | JOY_P1_TH_OUT_LO 0b00000000
#define | JOY_P2_TR_OUT_HI 0b01000000
#define | JOY_P2_TR_OUT_LO 0b00000000
#define | JOY_P2_TH_OUT_HI 0b10000000
#define | JOY_P2_TH_OUT_LO 0b00000000
#define | JOY_TH_HI (JOY_P1_TR_DIR_IN | JOY_P1_TH_DIR_OUT | JOY_P2_TR_DIR_IN | JOY_P2_TH_DIR_OUT | JOY_P1_TR_OUT_HI | JOY_P1_TH_OUT_HI | JOY_P2_TR_OUT_HI | JOY_P2_TH_OUT_HI)
#define | JOY_TH_LO (JOY_P1_TR_DIR_IN | JOY_P1_TH_DIR_OUT | JOY_P2_TR_DIR_IN | JOY_P2_TH_DIR_OUT | JOY_P1_TR_OUT_HI | JOY_P1_TH_OUT_LO | JOY_P2_TR_OUT_HI | JOY_P2_TH_OUT_LO)
#define | PSG_LATCH 0b10000000
#define | PSG_CH0 0b00000000
#define | PSG_CH1 0b00100000
#define | PSG_CH2 0b01000000
#define | PSG_CH3 0b01100000
#define | PSG_VOLUME 0b00010000
#define | STATF_INT_VBL 0b10000000
#define | STATF_9_SPR 0b01000000
#define | STATF_SPR_COLL 0b00100000
#define | VDP_REG_MASK 0b10000000
#define | VDP_R0 0b10000000
#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
#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
#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
#define | VDP_R4 0b10000100
#define | VDP_R5 0b10000101
#define | R5_SAT_0x3F00 0xFF
#define | R5_SAT_0x1F00 0xBF
#define | R5_SAT_MASK 0b10000001
#define | VDP_R6 0b10000110
#define | R6_BANK0 0xFB
#define | R6_DATA_0x0000 0xFB
#define | R6_BANK1 0xFF
#define | R6_DATA_0x2000 0xFF
#define | VDP_R7 0b10000111
#define | VDP_RBORDER 0b10000111
#define | R7_COLOR_MASK 0b11110000
#define | VDP_R8 0b10001000
#define | VDP_RSCX 0b10001000
#define | VDP_R9 0b10001001
#define | VDP_RSCY 0b10001001
#define | VDP_R10 0b10001010
#define | R10_INT_OFF 0xFF
#define | R10_INT_EVERY 0x00
#define | JOY_P1_UP 0b00000001
#define | JOY_P1_MD_Z JOY_P1_UP
#define | JOY_P1_DOWN 0b00000010
#define | JOY_P1_MD_Y JOY_P1_DOWN
#define | JOY_P1_LEFT 0b00000100
#define | JOY_P1_MD_X JOY_P1_LEFT
#define | JOY_P1_RIGHT 0b00001000
#define | JOY_P1_MD_MODE JOY_P1_RIGHT
#define | JOY_P1_SW1 0b00010000
#define | JOY_P1_TRIGGER JOY_P1_SW1
#define | JOY_P1_MD_A JOY_P1_SW1
#define | JOY_P1_SW2 0b00100000
#define | JOY_P1_MD_START JOY_P1_SW2
#define | JOY_P2_UP 0b01000000
#define | JOY_P2_MD_Z JOY_P2_UP
#define | JOY_P2_DOWN 0b10000000
#define | JOY_P2_MD_Y JOY_P2_DOWN
#define | JOY_P2_LEFT 0b00000001
#define | JOY_P2_MD_X JOY_P2_LEFT
#define | JOY_P2_RIGHT 0b00000010
#define | JOY_P2_MD_MODE JOY_P2_RIGHT
#define | JOY_P2_SW1 0b00000100
#define | JOY_P2_TRIGGER JOY_P2_SW1
#define | JOY_P2_MD_A JOY_P2_SW1
#define | JOY_P2_SW2 0b00001000
#define | JOY_P2_MD_START JOY_P2_SW2
#define | JOY_RESET 0b00010000
#define | JOY_P1_LIGHT 0b01000000
#define | JOY_P2_LIGHT 0b10000000
#define | RAMCTL_BANK 0b00000100
#define | RAMCTL_ROM 0b00000000
#define | RAMCTL_RAM 0b00001000
#define | RAMCTL_RO 0b00010000
#define | RAMCTL_PROT 0b10000000
#define | VBK_TILES 0
#define | VBK_ATTRIBUTES 1
#define | VDP_SAT_TERM 0xD0
#define | DEVICE_SCREEN_PX_WIDTH (DEVICE_SCREEN_WIDTH * 8)
#define | DEVICE_SCREEN_PX_HEIGHT (DEVICE_SCREEN_HEIGHT * 8)

## Variables
UBYTE | shadow_VDP_R0
UBYTE | shadow_VDP_R1
UBYTE | shadow_VDP_R2
UBYTE | shadow_VDP_R3
UBYTE | shadow_VDP_R4
UBYTE | shadow_VDP_R5
UBYTE | shadow_VDP_R6
UBYTE | shadow_VDP_R7
UBYTE | shadow_VDP_RBORDER
UBYTE | shadow_VDP_R8
UBYTE | shadow_VDP_RSCX
UBYTE | shadow_VDP_R9
UBYTE | shadow_VDP_RSCY
UBYTE | shadow_VDP_R10
volatile UBYTE | TIMA_REG
volatile UBYTE | TMA_REG
volatile UBYTE | TAC_REG
volatile UBYTE | VDP_ATTR_SHIFT

## Detailed Description

Defines that let the SMS/GG hardware registers be accessed from C.

## Macro Definition Documentation

## ◆ __BYTES

#define __BYTES extern UBYTE

## ◆ __BYTE_REG

#define __BYTE_REG extern volatile UBYTE

## ◆ GGSTATE_STT

#define GGSTATE_STT 0b10000000

## ◆ GGSTATE_NJAP

#define GGSTATE_NJAP 0b01000000

## ◆ GGSTATE_NNTS

#define GGSTATE_NNTS 0b00100000

## ◆ GGEXT_NINIT

#define GGEXT_NINIT 0b10000000

## ◆ SIOCTL_TXFL

#define SIOCTL_TXFL 0b00000001

## ◆ SIOCTL_RXRD

#define SIOCTL_RXRD 0b00000010

## ◆ SIOCTL_FRER

#define SIOCTL_FRER 0b00000100

## ◆ SIOCTL_INT

#define SIOCTL_INT 0b00001000

## ◆ SIOCTL_TON

#define SIOCTL_TON 0b00010000

## ◆ SIOCTL_RON

#define SIOCTL_RON 0b00100000

## ◆ SIOCTL_BS0

#define SIOCTL_BS0 0b01000000

## ◆ SIOCTL_BS1

#define SIOCTL_BS1 0b10000000

## ◆ SOUNDPAN_TN1R

#define SOUNDPAN_TN1R 0b00000001

## ◆ SOUNDPAN_TN2R

#define SOUNDPAN_TN2R 0b00000010

## ◆ SOUNDPAN_TN3R

#define SOUNDPAN_TN3R 0b00000100

## ◆ SOUNDPAN_NOSR

#define SOUNDPAN_NOSR 0b00001000

## ◆ SOUNDPAN_TN1L

#define SOUNDPAN_TN1L 0b00010000

## ◆ SOUNDPAN_TN2L

#define SOUNDPAN_TN2L 0b00100000

## ◆ SOUNDPAN_TN3L

#define SOUNDPAN_TN3L 0b01000000

## ◆ SOUNDPAN_NOSL

#define SOUNDPAN_NOSL 0b10000000

## ◆ MEMCTL_JOYON

#define MEMCTL_JOYON 0b00000000

## ◆ MEMCTL_JOYOFF

#define MEMCTL_JOYOFF 0b00000100

## ◆ MEMCTL_BASEON

#define MEMCTL_BASEON 0b00000000

## ◆ MEMCTL_BASEOFF

#define MEMCTL_BASEOFF 0b00001000

## ◆ MEMCTL_RAMON

#define MEMCTL_RAMON 0b00000000

## ◆ MEMCTL_RAMOFF

#define MEMCTL_RAMOFF 0b00010000

## ◆ MEMCTL_CROMON

#define MEMCTL_CROMON 0b00000000

## ◆ MEMCTL_CROMOFF

#define MEMCTL_CROMOFF 0b00100000

## ◆ MEMCTL_ROMON

#define MEMCTL_ROMON 0b00000000

## ◆ MEMCTL_ROMOFF

#define MEMCTL_ROMOFF 0b01000000

## ◆ MEMCTL_EXTON

#define MEMCTL_EXTON 0b00000000

## ◆ MEMCTL_EXTOFF

#define MEMCTL_EXTOFF 0b10000000

## ◆ JOY_P1_TR_DIR_IN

#define JOY_P1_TR_DIR_IN 0b00000001

## ◆ JOY_P1_TR_DIR_OUT

#define JOY_P1_TR_DIR_OUT 0b00000000

## ◆ JOY_P1_TH_DIR_IN

#define JOY_P1_TH_DIR_IN 0b00000010

## ◆ GUN_P1_LATCH

#define GUN_P1_LATCH JOY_P1_TH_DIR_IN

## ◆ JOY_P1_TH_DIR_OUT

#define JOY_P1_TH_DIR_OUT 0b00000000

## ◆ JOY_P2_TR_DIR_IN

#define JOY_P2_TR_DIR_IN 0b00000100

## ◆ JOY_P2_TR_DIR_OUT

#define JOY_P2_TR_DIR_OUT 0b00000000

## ◆ JOY_P2_TH_DIR_IN

#define JOY_P2_TH_DIR_IN 0b00001000

## ◆ GUN_P2_LATCH

#define GUN_P2_LATCH JOY_P2_TH_DIR_IN

## ◆ JOY_P2_TH_DIR_OUT

#define JOY_P2_TH_DIR_OUT 0b00000000

## ◆ JOY_P1_TR_OUT_HI

#define JOY_P1_TR_OUT_HI 0b00010000

## ◆ JOY_P1_TR_OUT_LO

#define JOY_P1_TR_OUT_LO 0b00000000

## ◆ JOY_P1_TH_OUT_HI

#define JOY_P1_TH_OUT_HI 0b00100000

## ◆ JOY_P1_TH_OUT_LO

#define JOY_P1_TH_OUT_LO 0b00000000

## ◆ JOY_P2_TR_OUT_HI

#define JOY_P2_TR_OUT_HI 0b01000000

## ◆ JOY_P2_TR_OUT_LO

#define JOY_P2_TR_OUT_LO 0b00000000

## ◆ JOY_P2_TH_OUT_HI

#define JOY_P2_TH_OUT_HI 0b10000000

## ◆ JOY_P2_TH_OUT_LO

#define JOY_P2_TH_OUT_LO 0b00000000

## ◆ JOY_TH_HI

#define JOY_TH_HI (JOY_P1_TR_DIR_IN | JOY_P1_TH_DIR_OUT | JOY_P2_TR_DIR_IN | JOY_P2_TH_DIR_OUT | JOY_P1_TR_OUT_HI | JOY_P1_TH_OUT_HI | JOY_P2_TR_OUT_HI | JOY_P2_TH_OUT_HI)

## ◆ JOY_TH_LO

#define JOY_TH_LO (JOY_P1_TR_DIR_IN | JOY_P1_TH_DIR_OUT | JOY_P2_TR_DIR_IN | JOY_P2_TH_DIR_OUT | JOY_P1_TR_OUT_HI | JOY_P1_TH_OUT_LO | JOY_P2_TR_OUT_HI | JOY_P2_TH_OUT_LO)

## ◆ PSG_LATCH

#define PSG_LATCH 0b10000000

## ◆ PSG_CH0

#define PSG_CH0 0b00000000

## ◆ PSG_CH1

#define PSG_CH1 0b00100000

## ◆ PSG_CH2

#define PSG_CH2 0b01000000

## ◆ PSG_CH3

#define PSG_CH3 0b01100000

## ◆ PSG_VOLUME

#define PSG_VOLUME 0b00010000

## ◆ STATF_INT_VBL

#define STATF_INT_VBL 0b10000000

## ◆ STATF_9_SPR

#define STATF_9_SPR 0b01000000

## ◆ STATF_SPR_COLL

#define STATF_SPR_COLL 0b00100000

## ◆ VDP_REG_MASK

#define VDP_REG_MASK 0b10000000

## ◆ VDP_R0

#define VDP_R0 0b10000000

## ◆ R0_VSCRL

#define R0_VSCRL 0b00000000

## ◆ R0_VSCRL_INH

#define R0_VSCRL_INH 0b10000000

## ◆ R0_HSCRL

#define R0_HSCRL 0b00000000

## ◆ R0_HSCRL_INH

#define R0_HSCRL_INH 0b01000000

## ◆ R0_NO_LCB

#define R0_NO_LCB 0b00000000

## ◆ R0_LCB

#define R0_LCB 0b00100000

## ◆ R0_IE1_OFF

#define R0_IE1_OFF 0b00000000

## ◆ R0_IE1

#define R0_IE1 0b00010000

## ◆ R0_SS_OFF

#define R0_SS_OFF 0b00000000

## ◆ R0_SS

#define R0_SS 0b00001000

## ◆ R0_DEFAULT

#define R0_DEFAULT 0b00000110

## ◆ R0_ES_OFF

#define R0_ES_OFF 0b00000000

## ◆ R0_ES

#define R0_ES 0b00000001

## ◆ VDP_R1

#define VDP_R1 0b10000001

## ◆ R1_DEFAULT

#define R1_DEFAULT 0b10000000

## ◆ R1_DISP_OFF

#define R1_DISP_OFF 0b00000000

## ◆ R1_DISP_ON

#define R1_DISP_ON 0b01000000

## ◆ R1_IE_OFF

#define R1_IE_OFF 0b00000000

## ◆ R1_IE

#define R1_IE 0b00100000

## ◆ R1_SPR_8X8

#define R1_SPR_8X8 0b00000000

## ◆ R1_SPR_8X16

#define R1_SPR_8X16 0b00000010

## ◆ VDP_R2

#define VDP_R2 0b10000010

## ◆ R2_MAP_0x3800

#define R2_MAP_0x3800 0xFF

## ◆ R2_MAP_0x3000

#define R2_MAP_0x3000 0xFD

## ◆ R2_MAP_0x2800

#define R2_MAP_0x2800 0xFB

## ◆ R2_MAP_0x2000

#define R2_MAP_0x2000 0xF9

## ◆ R2_MAP_0x1800

#define R2_MAP_0x1800 0xF7

## ◆ R2_MAP_0x1000

#define R2_MAP_0x1000 0xF5

## ◆ R2_MAP_0x0800

#define R2_MAP_0x0800 0xF3

## ◆ R2_MAP_0x0000

#define R2_MAP_0x0000 0xF1

## ◆ VDP_R3

#define VDP_R3 0b10000011

## ◆ VDP_R4

#define VDP_R4 0b10000100

## ◆ VDP_R5

#define VDP_R5 0b10000101

## ◆ R5_SAT_0x3F00

#define R5_SAT_0x3F00 0xFF

## ◆ R5_SAT_0x1F00

#define R5_SAT_0x1F00 0xBF

## ◆ R5_SAT_MASK

#define R5_SAT_MASK 0b10000001

## ◆ VDP_R6

#define VDP_R6 0b10000110

## ◆ R6_BANK0

#define R6_BANK0 0xFB

## ◆ R6_DATA_0x0000

#define R6_DATA_0x0000 0xFB

## ◆ R6_BANK1

#define R6_BANK1 0xFF

## ◆ R6_DATA_0x2000

#define R6_DATA_0x2000 0xFF

## ◆ VDP_R7

#define VDP_R7 0b10000111

## ◆ VDP_RBORDER

#define VDP_RBORDER 0b10000111

## ◆ R7_COLOR_MASK

#define R7_COLOR_MASK 0b11110000

## ◆ VDP_R8

#define VDP_R8 0b10001000

## ◆ VDP_RSCX

#define VDP_RSCX 0b10001000

## ◆ VDP_R9

#define VDP_R9 0b10001001

## ◆ VDP_RSCY

#define VDP_RSCY 0b10001001

## ◆ VDP_R10

#define VDP_R10 0b10001010

## ◆ R10_INT_OFF

#define R10_INT_OFF 0xFF

## ◆ R10_INT_EVERY

#define R10_INT_EVERY 0x00

## ◆ JOY_P1_UP

#define JOY_P1_UP 0b00000001

## ◆ JOY_P1_MD_Z

#define JOY_P1_MD_Z JOY_P1_UP

## ◆ JOY_P1_DOWN

#define JOY_P1_DOWN 0b00000010

## ◆ JOY_P1_MD_Y

#define JOY_P1_MD_Y JOY_P1_DOWN

## ◆ JOY_P1_LEFT

#define JOY_P1_LEFT 0b00000100

## ◆ JOY_P1_MD_X

#define JOY_P1_MD_X JOY_P1_LEFT

## ◆ JOY_P1_RIGHT

#define JOY_P1_RIGHT 0b00001000

## ◆ JOY_P1_MD_MODE

#define JOY_P1_MD_MODE JOY_P1_RIGHT

## ◆ JOY_P1_SW1

#define JOY_P1_SW1 0b00010000

## ◆ JOY_P1_TRIGGER

#define JOY_P1_TRIGGER JOY_P1_SW1

## ◆ JOY_P1_MD_A

#define JOY_P1_MD_A JOY_P1_SW1

## ◆ JOY_P1_SW2

#define JOY_P1_SW2 0b00100000

## ◆ JOY_P1_MD_START

#define JOY_P1_MD_START JOY_P1_SW2

## ◆ JOY_P2_UP

#define JOY_P2_UP 0b01000000

## ◆ JOY_P2_MD_Z

#define JOY_P2_MD_Z JOY_P2_UP

## ◆ JOY_P2_DOWN

#define JOY_P2_DOWN 0b10000000

## ◆ JOY_P2_MD_Y

#define JOY_P2_MD_Y JOY_P2_DOWN

## ◆ JOY_P2_LEFT

#define JOY_P2_LEFT 0b00000001

## ◆ JOY_P2_MD_X

#define JOY_P2_MD_X JOY_P2_LEFT

## ◆ JOY_P2_RIGHT

#define JOY_P2_RIGHT 0b00000010

## ◆ JOY_P2_MD_MODE

#define JOY_P2_MD_MODE JOY_P2_RIGHT

## ◆ JOY_P2_SW1

#define JOY_P2_SW1 0b00000100

## ◆ JOY_P2_TRIGGER

#define JOY_P2_TRIGGER JOY_P2_SW1

## ◆ JOY_P2_MD_A

#define JOY_P2_MD_A JOY_P2_SW1

## ◆ JOY_P2_SW2

#define JOY_P2_SW2 0b00001000

## ◆ JOY_P2_MD_START

#define JOY_P2_MD_START JOY_P2_SW2

## ◆ JOY_RESET

#define JOY_RESET 0b00010000

## ◆ JOY_P1_LIGHT

#define JOY_P1_LIGHT 0b01000000

## ◆ JOY_P2_LIGHT

#define JOY_P2_LIGHT 0b10000000

## ◆ RAMCTL_BANK

#define RAMCTL_BANK 0b00000100

## ◆ RAMCTL_ROM

#define RAMCTL_ROM 0b00000000

## ◆ RAMCTL_RAM

#define RAMCTL_RAM 0b00001000

## ◆ RAMCTL_RO

#define RAMCTL_RO 0b00010000

## ◆ RAMCTL_PROT

#define RAMCTL_PROT 0b10000000

## ◆ VBK_TILES

#define VBK_TILES 0

## ◆ VBK_ATTRIBUTES

#define VBK_ATTRIBUTES 1

## ◆ VDP_SAT_TERM

#define VDP_SAT_TERM 0xD0

## ◆ DEVICE_SCREEN_PX_WIDTH

#define DEVICE_SCREEN_PX_WIDTH (DEVICE_SCREEN_WIDTH * 8)

## ◆ DEVICE_SCREEN_PX_HEIGHT

#define DEVICE_SCREEN_PX_HEIGHT (DEVICE_SCREEN_HEIGHT * 8)

## Variable Documentation

## ◆ shadow_VDP_R0

UBYTE shadow_VDP_R0
| extern

## ◆ shadow_VDP_R1

UBYTE shadow_VDP_R1
| extern

## ◆ shadow_VDP_R2

UBYTE shadow_VDP_R2
| extern

## ◆ shadow_VDP_R3

UBYTE shadow_VDP_R3
| extern

## ◆ shadow_VDP_R4

UBYTE shadow_VDP_R4
| extern

## ◆ shadow_VDP_R5

UBYTE shadow_VDP_R5
| extern

## ◆ shadow_VDP_R6

UBYTE shadow_VDP_R6
| extern

## ◆ shadow_VDP_R7

UBYTE shadow_VDP_R7
| extern

## ◆ shadow_VDP_RBORDER

UBYTE shadow_VDP_RBORDER
| extern

## ◆ shadow_VDP_R8

UBYTE shadow_VDP_R8
| extern

## ◆ shadow_VDP_RSCX

UBYTE shadow_VDP_RSCX
| extern

## ◆ shadow_VDP_R9

UBYTE shadow_VDP_R9
| extern

## ◆ shadow_VDP_RSCY

UBYTE shadow_VDP_RSCY
| extern

## ◆ shadow_VDP_R10

UBYTE shadow_VDP_R10
| extern

## ◆ TIMA_REG

volatile UBYTE TIMA_REG
| extern

Timer counter

## ◆ TMA_REG

volatile UBYTE TMA_REG
| extern

Timer modulo

## ◆ TAC_REG

volatile UBYTE TAC_REG
| extern

Timer control

## ◆ VDP_ATTR_SHIFT

volatile UBYTE VDP_ATTR_SHIFT
| extern