memory.h File Reference

Defines for many of the regions of memory on the DS as well as a few control functions for memory bus access. More...

#include <assert.h>
#include <nds/ndstypes.h>

Data Structures
struct	sGBAHeader
	GBA file header format. More...
struct	sNDSBanner
	NDS banner format. More...
struct	sNDSHeader
	NDS file header format. More...

Macros
#define	ALLRAM   ((u8*)0x00000000)
	8 bit pointer to the start of all the RAM.
#define	GBA_BUS   ((vu16 *)(0x08000000))
	16 bit volatile pointer to the GBA slot bus.
#define	GBAROM   ((u16 *)0x08000000)
	16 bit pointer to the GBA slot ROM.
#define	MAINRAM16   ((u16 *)0x02000000)
	16 bit pointer to main RAM.
#define	MAINRAM32   ((u32 *)0x02000000)
	32 bit pointer to main RAM.
#define	MAINRAM8   ((u8 *)0x02000000)
	8 bit pointer to main RAM.
#define	REG_VRAMSTAT   (*(vu8 *)0x04000240)
	Read-only register to determine if VRAM C and D are mapped to the ARM7.
#define	REG_WRAMSTAT   (*(vu8 *)0x04000241)
	Read-only register to determine if WRAM is mapped to the ARM7.
#define	SRAM   ((u8 *)0x0A000000)
	8 bit pointer to GBA slot Save RAM.
#define	VRAM   ((u16 *)0x06000000)
	16 bit pointer to VRAM from ARM7

Typedefs
typedef struct sGBAHeader	tGBAHeader
	GBA file header format.
typedef struct sNDSBanner	tNDSBanner
	NDS banner format.
typedef struct sNDSHeader	tNDSHeader
	NDS file header format.

Functions
static bool	sysGetCardOwner (void)
	Retrieves the owner of the DS card bus.
static bool	sysGetCartOwner (void)
	Retrieves the owner of the GBA cart.
static void	sysSetBusOwners (bool arm9rom, bool arm9card)
	Sets the owner of the DS card bus (slot 1) and GBA cart bus (slot 2).
static void	sysSetCardOwner (bool arm9)
	Sets the owner of the DS card bus.
static void	sysSetCartOwner (bool arm9)
	Sets the owner of the GBA cart.

Detailed Description

Defines for many of the regions of memory on the DS as well as a few control functions for memory bus access.

Typedef Documentation

tGBAHeader

typedef struct sGBAHeader tGBAHeader

GBA file header format.

See gbatek for more info.

tNDSBanner

typedef struct sNDSBanner tNDSBanner

NDS banner format.

See gbatek for more information.

tNDSHeader

typedef struct sNDSHeader tNDSHeader

NDS file header format.

See gbatek for more info.

Function Documentation

sysGetCardOwner()

static bool sysGetCardOwner ( void  )

inlinestatic

Retrieves the owner of the DS card bus.

Both CPUs cannot have access to the DS card bus at the same time (slot 1).

Returns

The current owner of the DS card bus (true if ARM9 is the owner).

sysGetCartOwner()

static bool sysGetCartOwner ( void  )

inlinestatic

Retrieves the owner of the GBA cart.

Both CPUs cannot have access to the GBA cart at the same time (slot 2).

Returns

The current owner of the GBA cart bus (true if ARM9 is the owner).

sysSetBusOwners()

static void sysSetBusOwners ( bool  arm9rom, bool  arm9card  )

inlinestatic

Sets the owner of the DS card bus (slot 1) and GBA cart bus (slot 2).

Only one CPU may access the devices at a time.

Parameters

arm9rom	If true the ARM9 is the owner of slot 2, otherwise the ARM7
arm9card	If true the ARM9 is the owner of slot 1, otherwise the ARM7

sysSetCardOwner()

static void sysSetCardOwner ( bool  arm9 )

inlinestatic

Sets the owner of the DS card bus.

Both CPUs cannot have access to the DS card bus at the same time (slot 1).

Parameters

arm9	If true the ARM9 is the owner, otherwise the ARM7

sysSetCartOwner()

static void sysSetCartOwner ( bool  arm9 )

inlinestatic

Sets the owner of the GBA cart.

Both CPUs cannot have access to the GBA cart at the same time (slot 2).

Parameters

arm9	If true the ARM9 is the owner, otherwise the ARM7