mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-09 12:25:16 +01:00
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
|
/****************************************************************************
|
||
|
|
* Super Street Fighter 2 - The New Challengers
|
||
|
|
*
|
||
|
|
* This is the ROM mapper for this game.
|
||
|
|
* Called from mem68k.c
|
||
|
|
***************************************************************************/
|
||
|
|
#include "shared.h"
|
||
|
|
|
||
|
|
#ifdef NGC
|
||
|
|
char *shadow_rom = (char *) 0x8000;
|
||
|
|
#else
|
||
|
|
char shadow_rom[0x500000];
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int SSF2TNC = 0;
|
||
|
|
static int oldaddr = 0;
|
||
|
|
static uint8 olddata = 0;
|
||
|
|
|
||
|
|
void ssf2bankrom (int address, unsigned char data)
|
||
|
|
{
|
||
|
|
/* Banking performed on odd addresses only */
|
||
|
|
if (!(address & 1)) return;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Whilst debugging the ARAM stuff, I noticed that this ROM
|
||
|
|
* requested the same address/data on subsequent calls.
|
||
|
|
* This is just a little speedup, which seems to make the
|
||
|
|
* sound etc in the intro much less choppy.
|
||
|
|
*
|
||
|
|
* Happy dance anyone?
|
||
|
|
*/
|
||
|
|
if ((oldaddr == address) && (olddata == data)) return;
|
||
|
|
|
||
|
|
if ((address > 0xa130f2) && (address < 0xa13100))
|
||
|
|
{
|
||
|
|
switch (address & 0xf)
|
||
|
|
{
|
||
|
|
case 0x3: /* 080000-0FFFFF */
|
||
|
|
#ifdef NGC
|
||
|
|
ARAMFetch (cart_rom + 0x080000, shadow_rom + (data * 0x80000), 0x80000);
|
||
|
|
#else
|
||
|
|
memcpy (cart_rom + 0x080000, shadow_rom + (data * 0x80000), 0x80000);
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 0x5: /* 100000 - 17FFFF */
|
||
|
|
#ifdef NGC
|
||
|
|
ARAMFetch (cart_rom + 0x100000, shadow_rom + (data * 0x80000), 0x80000);
|
||
|
|
#else
|
||
|
|
memcpy (cart_rom + 0x100000, shadow_rom + (data * 0x80000), 0x80000);
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 0x7: /* 180000 - 1FFFFF */
|
||
|
|
#ifdef NGC
|
||
|
|
ARAMFetch (cart_rom + 0x180000, shadow_rom + ( data * 0x80000), 0x80000);
|
||
|
|
#else
|
||
|
|
memcpy (cart_rom + 0x180000, shadow_rom + ( data * 0x80000), 0x80000);
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 0x9: /* 200000 - 27FFFF */
|
||
|
|
#ifdef NGC
|
||
|
|
ARAMFetch (cart_rom + 0x200000, shadow_rom + ( data * 0x80000), 0x80000);
|
||
|
|
#else
|
||
|
|
memcpy (cart_rom + 0x200000, shadow_rom + ( data * 0x80000), 0x80000);
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 0xb: /* 280000 - 2FFFFF */
|
||
|
|
#ifdef NGC
|
||
|
|
ARAMFetch (cart_rom + 0x280000, shadow_rom + ( data * 0x80000), 0x80000);
|
||
|
|
#else
|
||
|
|
memcpy (cart_rom + 0x280000, shadow_rom + ( data * 0x80000), 0x80000);
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 0xd: /* 300000 - 37FFFF */
|
||
|
|
#ifdef NGC
|
||
|
|
ARAMFetch (cart_rom + 0x300000, shadow_rom + ( data * 0x80000), 0x80000);
|
||
|
|
#else
|
||
|
|
memcpy (cart_rom + 0x300000, shadow_rom + ( data * 0x80000), 0x80000);
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 0xf: /* 380000 - 3FFFFF */
|
||
|
|
#ifdef NGC
|
||
|
|
ARAMFetch (cart_rom + 0x380000, shadow_rom + ( data * 0x80000), 0x80000);
|
||
|
|
#else
|
||
|
|
memcpy (cart_rom + 0x380000, shadow_rom + ( data * 0x80000), 0x80000);
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
oldaddr = address;
|
||
|
|
olddata = data;
|
||
|
|
}
|