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added very preliminar emulation of Pro Action Replay 1 & 2 hardwares (NOT WORKING)

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ekeeke31 2009-08-03 17:21:36 +00:00
parent 9eecfa2c7c
commit acdfb2dbee
1 changed files with 59 additions and 15 deletions
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74
source/cart_hw/datel.c
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@ -21,10 +21,15 @@
#include "shared.h" #include "shared.h"
#define TYPE_AR 1
#define TYPE_PRO1 2
#define TYPE_PRO2 3
static struct static struct
{ {
uint8 enabled; uint8 enabled;
uint8 rom[0x10000]; uint8 rom[0x20000];
uint8 ram[0x10000];
uint16 regs[13]; uint16 regs[13];
uint16 old[4]; uint16 old[4];
uint16 data[4]; uint16 data[4];
@ -39,32 +44,48 @@ void datel_init(void)
{ {
memset(&action_replay,0,sizeof(action_replay)); memset(&action_replay,0,sizeof(action_replay));
/* load Game Genie ROM program */ /* load Action Replay ROM program */
FILE *f = fopen(AR_ROM,"rb"); FILE *f = fopen(AR_ROM,"rb");
if (!f) return; if (!f) return;
fread(action_replay.rom,1,0x8000,f); int size = fread(action_replay.rom,1,0x20000,f);
fclose(f); fclose(f);
/* $0000-$7fff mirrored into $8000-$ffff */ /* detect Action Replay yype */
memcpy(action_replay.rom+0x8000,action_replay.rom,0x8000); if (size < 0x10000)
action_replay.enabled = TYPE_AR;
else if (size < 0x20000)
action_replay.enabled = TYPE_PRO2;
else
action_replay.enabled = TYPE_PRO1;
/* default memory map */
switch (action_replay.enabled)
{
case TYPE_AR:
/* $0000-$7fff mirrored into $8000-$ffff */
memcpy(action_replay.rom+0x8000,action_replay.rom,0x8000);
m68k_memory_map[1].write16 = ar_write_regs;
break;
case TYPE_PRO1:
m68k_memory_map[1].write16 = ar_write_regs;
break;
case TYPE_PRO2: /* todo */
break;
}
#ifdef LSB_FIRST #ifdef LSB_FIRST
/* Byteswap ROM */ /* Byteswap ROM */
int i; int i;
uint8 temp; uint8 temp;
for(i = 0; i < 0x10000; i += 2) for(i = 0; i < 0x20000; i += 2)
{ {
temp = action_replay.rom[i]; temp = action_replay.rom[i];
action_replay.rom[i] = action_replay.rom[i+1]; action_replay.rom[i] = action_replay.rom[i+1];
action_replay.rom[i+1] = temp; action_replay.rom[i+1] = temp;
} }
#endif #endif
/* enable registers write */
m68k_memory_map[1].write16 = ar_write_regs;
/* set flag */
action_replay.enabled = 1;
} }
void datel_reset(void) void datel_reset(void)
@ -80,8 +101,32 @@ void datel_reset(void)
memset(action_replay.data,0,sizeof(action_replay.data)); memset(action_replay.data,0,sizeof(action_replay.data));
memset(action_replay.addr,0,sizeof(action_replay.addr)); memset(action_replay.addr,0,sizeof(action_replay.addr));
/* slot 0 is mapped to Action replay ROM */ /* reset memory map */
m68k_memory_map[0].base = action_replay.rom; switch (action_replay.enabled)
{
case TYPE_AR:
m68k_memory_map[0].base = action_replay.rom;
break;
case TYPE_PRO1:
m68k_memory_map[0].base = action_replay.rom;
m68k_memory_map[1].base = action_replay.rom + 0x10000;
m68k_memory_map[0x42].base = action_replay.ram;
m68k_memory_map[0x42].read8 = NULL;
m68k_memory_map[0x42].read16 = NULL;
m68k_memory_map[0x42].write8 = NULL;
m68k_memory_map[0x42].write16 = NULL;
break;
case TYPE_PRO2:
m68k_memory_map[0].base = action_replay.rom;
m68k_memory_map[0x60].base = action_replay.ram;
m68k_memory_map[0x60].read8 = NULL;
m68k_memory_map[0x60].read16 = NULL;
m68k_memory_map[0x60].write8 = NULL;
m68k_memory_map[0x60].write16 = NULL;
break;
}
} }
} }
@ -155,7 +200,6 @@ static void wram_write_byte(uint32 address, uint32 data)
action_replay.old[i] = (action_replay.old[i] & 0xff00) | (data & 0xff); action_replay.old[i] = (action_replay.old[i] & 0xff00) | (data & 0xff);
else /* upper byte write */ else /* upper byte write */
action_replay.old[i] = (action_replay.old[i] & 0x00ff) | (data << 8); action_replay.old[i] = (action_replay.old[i] & 0x00ff) | (data << 8);
return; return;
} }
} }