void sms_mapper8k_w(INT32 address, UINT8 data) // WIP
{
/* Calculate ROM page index */
UINT32 poffset = (data % (cart.pages * 2)) << 13;
/* Save frame control register data */
cart.fcr[address] = data;
/* 4 x 8k banks */
switch (address & 3)
{
case 0: /* cartridge ROM bank (8k) at $8000-$9FFF */
ZetMapMemory(cart.rom + poffset, 0x8000, 0x9fff, MAP_ROM);
break;
case 1: /* cartridge ROM bank (8k) at $A000-$BFFF */
ZetMapMemory(cart.rom + poffset, 0xa000, 0xbfff, MAP_ROM);
break;
case 2: /* cartridge ROM bank (8k) at $4000-$5FFF */
ZetMapMemory(cart.rom + poffset, 0x4000, 0x5fff, MAP_ROM);
break;
case 3: /* cartridge ROM bank (8k) at $6000-$7FFF */
ZetMapMemory(cart.rom + poffset, 0x6000, 0x7fff, MAP_ROM);
break;
}
}
static void bankswitch(INT32 data)
{
*z80_bank = data;
INT32 nBank = (data & 0x80) ? 0x14000 : 0x10000;
ZetMapMemory(DrvZ80ROM + nBank, 0x8000, 0xbfff, MAP_ROM);
}
void sms_mapper_w(INT32 address, UINT8 data)
{
/* Calculate ROM page index */
UINT32 poffset = (data % cart.pages) << 14;
/* Save frame control register data */
cart.fcr[address] = data;
switch(address)
{
case 0: // page 2
if(data & 8)
{
uint32 offset = (data & 4) ? 0x4000 : 0x0000;
sms.save = 1;
ZetMapMemory((UINT8 *)&cart.sram + offset, 0x8000, 0xbfff, MAP_RAM);
}
else
{
poffset = ((cart.fcr[3] % cart.pages) << 14);
ZetMapMemory(cart.rom + poffset, 0x8000, 0xbfff, MAP_ROM);
if (cart.mapper == MAPPER_SEGA)
ZetMapMemory((UINT8 *)&dummy_write, 0x8000, 0xbfff, MAP_WRITE);
}
break;
case 1: // page 0
ZetMapMemory(cart.rom + poffset, 0x0000, 0x3fff, MAP_ROM);
break;
case 2: // page 1
ZetMapMemory(cart.rom + poffset, 0x4000, 0x7fff, MAP_ROM);
break;
case 3: // page 2
if(!(cart.fcr[0] & 0x08))
{
ZetMapMemory(cart.rom + poffset, 0x8000, 0xbfff, MAP_ROM);
}
break;
}
}
static INT32 DrvInit()
{
BurnSetRefreshRate(60.00);
AllMem = NULL;
MemIndex();
INT32 nLen = MemEnd - (UINT8 *)0;
if ((AllMem = (UINT8 *)BurnMalloc(nLen)) == NULL) return 1;
memset(AllMem, 0, nLen);
MemIndex();
{
if (BurnLoadRom(DrvZ80ROM + 0x00000, 0, 1)) return 1;
if (BurnLoadRom(DrvZ80ROM + 0x10000, 1, 1)) return 1;
if (BurnLoadRom(t5182ROM + 0x00000, 2, 1)) return 1;
if (BurnLoadRom(t5182ROM + 0x08000, 3, 1)) return 1;
if (BurnLoadRom(DrvGfxROM0 + 0x00000, 4, 1)) return 1;
if (BurnLoadRom(DrvGfxROM0 + 0x02000, 5, 1)) return 1;
if (BurnLoadRom(DrvGfxROM1 + 0x10000, 6, 1)) return 1;
if (BurnLoadRom(DrvGfxROM1 + 0x00000, 7, 1)) return 1;
if (BurnLoadRom(DrvGfxROM1 + 0x30000, 8, 1)) return 1;
if (BurnLoadRom(DrvGfxROM1 + 0x20000, 9, 1)) return 1;
if (BurnLoadRom(DrvGfxROM2 + 0x00000, 10, 1)) return 1;
if (BurnLoadRom(DrvGfxROM2 + 0x10000, 11, 1)) return 1;
if (BurnLoadRom(DrvGfxROM2 + 0x20000, 12, 1)) return 1;
if (BurnLoadRom(DrvGfxROM2 + 0x30000, 13, 1)) return 1;
if (BurnLoadRom(DrvGfxROM3 + 0x00000, 14, 1)) return 1;
if (BurnLoadRom(DrvGfxROM3 + 0x08000, 15, 1)) return 1;
if (BurnLoadRom(DrvGfxROM4 + 0x00000, 16, 1)) return 1;
if (BurnLoadRom(DrvGfxROM4 + 0x04000, 17, 1)) return 1;
if (BurnLoadRom(DrvColPROM + 0x00000, 18, 1)) return 1;
if (BurnLoadRom(DrvColPROM + 0x00100, 19, 1)) return 1;
if (BurnLoadRom(DrvColPROM + 0x00200, 20, 1)) return 1;
if (BurnLoadRom(DrvColPROM + 0x00300, 21, 1)) return 1;
decrypt_prg();
decrypt_gfx();
decrypt_snd();
DrvGfxDecode();
DrvPaletteInit();
}
ZetInit(0);
ZetOpen(0);
ZetMapMemory(DrvZ80ROM, 0x0000, 0x7fff, MAP_ROM);
ZetMapMemory(DrvZ80ROMDec, 0x0000, 0x7fff, MAP_FETCHOP);
ZetMapMemory(DrvPalRAM, 0xd000, 0xd3ff, MAP_ROM);
ZetMapMemory(DrvScrollRAM, 0xd400, 0xd4ff, MAP_RAM);
ZetMapMemory(DrvVidRAM, 0xd800, 0xdfff, MAP_RAM);
ZetMapMemory(DrvZ80RAM, 0xe000, 0xefff, MAP_RAM);
ZetMapMemory(DrvSprRAM, 0xf000, 0xffff, MAP_RAM);
ZetSetWriteHandler(darkmist_main_write);
ZetSetReadHandler(darkmist_main_read);
ZetClose();
t5182Init(1, 14318180/4);
GenericTilesInit();
DrvDoReset();
return 0;
}
void sms_reset(void)
{
ZetOpen(0);
/* Clear SMS context */
memset(&dummy_write, 0, sizeof(dummy_write));
memset(&sms.wram, 0, sizeof(sms.wram));
memset(cart.sram, 0, sizeof(cart.sram));
sms.paused = 0x00;
sms.save = 0x00;
sms.fm_detect = 0x00;
sms.memctrl = 0xAB;
sms.ioctrl = 0xFF;
ZetMapMemory(cart.rom + 0x0000, 0x0000, 0x03ff, MAP_ROM);
ZetMapMemory(cart.rom + 0x0400, 0x0400, 0x3fff, MAP_ROM);
ZetMapMemory(cart.rom + 0x4000, 0x4000, 0x7fff, MAP_ROM);
ZetMapMemory(cart.rom + 0x8000, 0x8000, 0xbfff, MAP_ROM);
if(cart.mapper == MAPPER_CODIES) {
ZetMapMemory((UINT8 *)&sms.wram + 0x0000, 0xc000, 0xdfff, MAP_RAM);
ZetMapMemory((UINT8 *)&sms.wram + 0x0000, 0xe000, 0xffff, MAP_RAM);
} else if(cart.mapper == MAPPER_SEGA) {
ZetMapMemory((UINT8 *)&sms.wram + 0x0000, 0xc000, 0xdfff, MAP_RAM);
ZetMapMemory((UINT8 *)&dummy_write, 0x0000, 0xbfff, MAP_WRITE);
ZetMapMemory((UINT8 *)&sms.wram + 0x0000, 0xe000, 0xffff, MAP_READ);
} else
{ // MSX Mapper
ZetMapMemory((UINT8 *)&sms.wram + 0x0000, 0xc000, 0xdfff, MAP_RAM);
ZetMapMemory((UINT8 *)&sms.wram + 0x0000, 0xe000, 0xffff, MAP_RAM);
}
ZetReset();
ZetClose();
cart.fcr[0] = 0x00;
cart.fcr[1] = 0x00;
cart.fcr[2] = 0x01;
cart.fcr[3] = 0x00;
switch (cart.mapper)
{
case MAPPER_MSX_NEMESIS: { // WIP!! / won't boot
// bprintf(0, _T("(nemesis)\n"));
cart.fcr[2] = 0x00;
UINT32 poffset = (0x0f) << 13;
ZetOpen(0);
ZetMapMemory(cart.rom + poffset, 0x0000, 0x1fff, MAP_READ);
ZetClose();
}
}
}
