mem.h

   1
   2 #ifndef __MEM_H__
   3 #define __MEM_H__
   4
   5
   6 #include "defs.h"
   7
   8
   9
  10 #define MBC_NONE 0
  11 #define MBC_MBC1 1
  12 #define MBC_MBC2 2
  13 #define MBC_MBC3 3
  14 #define MBC_MBC5 5
  15 #define MBC_RUMBLE 15
  16 #define MBC_HUC1 0xC1
  17 #define MBC_HUC3 0xC3
  18
  19 struct mbc
  20 {
  21         int type;
  22         int model;
  23         int rombank;
  24         int rambank;
  25         int romsize;
  26         int ramsize;
  27         int enableram;
  28         int batt;
  29         byte *rmap[0x10], *wmap[0x10];
  30 };
  31
  32 struct rom
  33 {
  34         byte (*bank)[16384];
  35         char name[20];
  36 };
  37
  38 struct ram
  39 {
  40         byte hi[256];
  41         byte ibank[8][4096];
  42         byte (*sbank)[8192];
  43         int loaded;
  44 };
  45
  46
  47 extern struct mbc mbc;
  48 extern struct rom rom;
  49 extern struct ram ram;
  50 extern struct rom bootrom;
  51
  52
  53
  54 void mem_mapbootrom();
  55 void mem_updatemap();
  56 void ioreg_write(byte r, byte b);
  57 void mbc_write(int a, byte b);
  58 void mem_write(int a, byte b);
  59 byte mem_read(int a);
  60 void mbc_reset();
  61 const char* mbc_to_string(int mbc_type);
  62
  63
  64 #define READB(a) ( mbc.rmap[(a)>>12] \
  65 ? mbc.rmap[(a)>>12][(a)] \
  66 : mem_read((a)) )
  67 #define READW(a) ( READB((a)) | ((word)READB((a)+1)<<8) )
  68
  69 #define WRITEB(a, b) ( mbc.wmap[(a)>>12] \
  70 ? ( mbc.wmap[(a)>>12][(a)] = (b) ) \
  71 : ( mem_write((a), (b)), (b) ) )
  72 #define WRITEW(a, w) ( WRITEB((a), (w)&0xFF), WRITEB((a)+1, (w)>>8) )
  73
  74
  75
  76
  77 #endif
  78
  79
  80