apps/plugins/rockboy/mem.h

   1 #ifndef __MEM_H__
   2 #define __MEM_H__
   3
   4 #include "defs.h"
   5
   6 #define MBC_NONE    0
   7 #define MBC_MBC1    1
   8 #define MBC_MBC2    2
   9 #define MBC_MBC3    4
  10 #define MBC_MBC5    8
  11 #define MBC_RUMBLE  16
  12 #define MBC_HUC1    32
  13 #define MBC_HUC3    64
  14 #define MBC_RTC     128
  15 #define MBC_BAT     256
  16
  17 struct mbc
  18 {
  19     int type;
  20     int model;
  21     int rombank;
  22     int rambank;
  23     int romsize;
  24     int ramsize;
  25     int enableram;
  26     int batt;
  27     byte *rmap[0x10], *wmap[0x10];
  28 };
  29
  30 struct rom
  31 {
  32     byte (*bank)[16384];
  33     char name[20];
  34 };
  35
  36 struct ram
  37 {
  38     byte hi[256];
  39     byte ibank[8][4096];
  40     byte (*sbank)[8192];
  41     int loaded;
  42 };
  43
  44 extern struct mbc mbc;
  45 extern struct rom rom;
  46 extern struct ram ram;
  47
  48 void mem_updatemap(void) ICODE_ATTR;
  49 void mem_write(int a, byte b) ICODE_ATTR;
  50 byte mem_read(int a) ICODE_ATTR;
  51 void mbc_reset(void);
  52
  53
  54 #define READB(a) ( mbc.rmap[(a)>>12] \
  55 ? mbc.rmap[(a)>>12][(a)] \
  56 : mem_read((a)) )
  57 #define READW(a) ( READB((a)) | ((word)READB((a)+1)<<8) )
  58
  59 #define WRITEB(a, b) ( mbc.wmap[(a)>>12] \
  60 ? ( mbc.wmap[(a)>>12][(a)] = (b) ) \
  61 : ( mem_write((a), (b)), (b) ) )
  62 #define WRITEW(a, w) ( WRITEB((a), (w)&0xFF), WRITEB((a)+1, (w)>>8) )
  63
  64 #endif