gnuboy-for-dfi/mem.h

80 lines
1.1 KiB
C

#ifndef __MEM_H__
#define __MEM_H__
#include "defs.h"
#define MBC_NONE 0
#define MBC_MBC1 1
#define MBC_MBC2 2
#define MBC_MBC3 3
#define MBC_MBC5 5
#define MBC_RUMBLE 15
#define MBC_HUC1 0xC1
#define MBC_HUC3 0xC3
struct mbc
{
int type;
int model;
int rombank;
int rambank;
int romsize;
int ramsize;
int enableram;
int batt;
byte *rmap[0x10], *wmap[0x10];
};
struct rom
{
byte (*bank)[16384];
char name[20];
};
struct ram
{
byte hi[256];
byte ibank[8][4096];
byte (*sbank)[8192];
int loaded;
};
extern struct mbc mbc;
extern struct rom rom;
extern struct ram ram;
void mem_updatemap();
void ioreg_write(byte r, byte b);
void mbc_write(int a, byte b);
void mem_write(int a, byte b);
byte mem_read(int a);
#define READB(a) ( mbc.rmap[(a)>>12] \
? mbc.rmap[(a)>>12][(a)] \
: mem_read((a)) )
#define READW(a) ( READB((a)) | ((word)READB((a)+1)<<8) )
#define WRITEB(a, b) ( mbc.wmap[(a)>>12] \
? ( mbc.wmap[(a)>>12][(a)] = (b) ) \
: ( mem_write((a), (b)), (b) ) )
#define WRITEW(a, w) ( WRITEB((a), (w)&0xFF), WRITEB((a)+1, (w)>>8) )
#endif