"Main Engine"

Main Engine Background registers. More...

Macros
#define	BACKGROUND   (*((bg_attribute *)0x04000008))
	Overlay for main screen background attributes.
#define	BG_BMP_RAM(base)   ((u16 *)(((base) * 0x4000) + 0x06000000))
	A macro which returns a u16 pointer to background graphics memory RAM (main engine)
#define	BG_MAP_RAM(base)   ((u16 *)(((base) * 0x800) + 0x06000000))
	A macro which returns a u16 pointer to background map RAM (main engine)
#define	BG_OFFSET   ((bg_scroll *)(0x04000010))
	Overlay for main screen background scroll registers.
#define	BG_TILE_RAM(base)   ((u16 *)(((base) * 0x4000) + 0x06000000))
	A macro which returns a u16 pointer to background tile RAM (main engine)
#define	BGCTRL   ((vu16 *)0x4000008)
	Access to all main screen background control registers via BGCTRL[x].
#define	CHAR_BASE_BLOCK(n)   (((n) * 0x4000) + 0x06000000)
	A macro which returns a u16 pointer to background tile RAM (main engine).
#define	REG_BG0CNT   (*(vu16 *)0x4000008)
	Background 0 control register (main engine)
#define	REG_BG0HOFS   (*(vu16 *)0x4000010)
	Background 0 horizontal scroll register (main engine)
#define	REG_BG0VOFS   (*(vu16 *)0x4000012)
	Background 0 vertical scroll register (main engine)
#define	REG_BG1CNT   (*(vu16 *)0x400000A)
	Background 1 control register (main engine)
#define	REG_BG1HOFS   (*(vu16 *)0x4000014)
	Background 1 horizontal scroll register (main engine)
#define	REG_BG1VOFS   (*(vu16 *)0x4000016)
	Background 1 vertical scroll register (main engine)
#define	REG_BG2CNT   (*(vu16 *)0x400000C)
	Background 2 control register (main engine)
#define	REG_BG2HOFS   (*(vu16 *)0x4000018)
	Background 2 horizontal scroll register (main engine)
#define	REG_BG2PA   (*(vs16 *)0x4000020)
	Background 2 affine transform (main engine)
#define	REG_BG2PB   (*(vs16 *)0x4000022)
	Background 2 affine transform (main engine)
#define	REG_BG2PC   (*(vs16 *)0x4000024)
	Background 2 affine transform (main engine)
#define	REG_BG2PD   (*(vs16 *)0x4000026)
	Background 2 affine transform (main engine)
#define	REG_BG2VOFS   (*(vu16 *)0x400001A)
	Background 2 vertical scroll register (main engine)
#define	REG_BG2X   (*(vs32 *)0x4000028)
	Background 2 screen offset (main engine)
#define	REG_BG2Y   (*(vs32 *)0x400002C)
	Background 2 screen offset (main engine)
#define	REG_BG3CNT   (*(vu16 *)0x400000E)
	Background 3 control register (main engine)
#define	REG_BG3HOFS   (*(vu16 *)0x400001C)
	Background 3 horizontal scroll register (main engine)
#define	REG_BG3PA   (*(vs16 *)0x4000030)
	Background 3 affine transform (main engine)
#define	REG_BG3PB   (*(vs16 *)0x4000032)
	Background 3 affine transform (main engine)
#define	REG_BG3PC   (*(vs16 *)0x4000034)
	Background 3 affine transform (main engine)
#define	REG_BG3PD   (*(vs16 *)0x4000036)
	Background 3 affine transform (main engine)
#define	REG_BG3VOFS   (*(vu16 *)0x400001E)
	Background 3 vertical scroll register (main engine)
#define	REG_BG3X   (*(vs32 *)0x4000038)
	Background 3 Screen Offset (main engine)
#define	REG_BG3Y   (*(vs32 *)0x400003C)
	Background 3 Screen Offset (main engine)
#define	SCREEN_BASE_BLOCK(n)   (((n) * 0x800) + 0x06000000)
	A macro which returns a u16* pointer to background map RAM (main engine).

Detailed Description

Main Engine Background registers.

Macro Definition Documentation

BACKGROUND

#define BACKGROUND   (*((bg_attribute *)0x04000008))

Overlay for main screen background attributes.

Setting the properties of this struct directly sets background registers.

BG_OFFSET

#define BG_OFFSET   ((bg_scroll *)(0x04000010))

Overlay for main screen background scroll registers.

Setting the properties of this struct directly sets background registers.

BGCTRL

#define BGCTRL   ((vu16 *)0x4000008)

Access to all main screen background control registers via BGCTRL[x].

GBATEK Reference

CHAR_BASE_BLOCK

#define CHAR_BASE_BLOCK

(

n

)

(((n) * 0x4000) + 0x06000000)

A macro which returns a u16 pointer to background tile RAM (main engine).

Use BG_TILE_RAM instead of this define if possible.

REG_BG0CNT

#define REG_BG0CNT   (*(vu16 *)0x4000008)

Background 0 control register (main engine)

GBATEK Reference

REG_BG1CNT

#define REG_BG1CNT   (*(vu16 *)0x400000A)

Background 1 control register (main engine)

GBATEK Reference

REG_BG2CNT

#define REG_BG2CNT   (*(vu16 *)0x400000C)

Background 2 control register (main engine)

GBATEK Reference

REG_BG3CNT

#define REG_BG3CNT   (*(vu16 *)0x400000E)

Background 3 control register (main engine)

GBATEK Reference

SCREEN_BASE_BLOCK

#define SCREEN_BASE_BLOCK

(

n

)

(((n) * 0x800) + 0x06000000)

A macro which returns a u16* pointer to background map RAM (main engine).

Use BG_MAP_RAM instead of this define if possible.