fceux/boards/datalatch.cpp

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/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2002 Xodnizel
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "mapinc.h"
static uint8 latche, latcheinit;
static uint16 addrreg0, addrreg1;
static void(*WSync)(void);
static DECLFW(LatchWrite)
{
// FCEU_printf("bs %04x %02x\n",A,V);
latche=V;
WSync();
}
static void LatchPower(void)
{
latche=latcheinit;
WSync();
SetReadHandler(0x8000,0xFFFF,CartBR);
SetWriteHandler(addrreg0,addrreg1,LatchWrite);
}
static void StateRestore(int version)
{
WSync();
}
static void Latch_Init(CartInfo *info, void (*proc)(void), uint8 init, uint16 adr0, uint16 adr1)
{
latcheinit=init;
addrreg0=adr0;
addrreg1=adr1;
WSync=proc;
info->Power=LatchPower;
GameStateRestore=StateRestore;
AddExState(&latche, 1, 0, "LATC");
}
//------------------ CPROM ---------------------------
static void CPROMSync(void)
{
setchr4(0x0000,0);
setchr4(0x1000,latche&3);
setprg16(0x8000,0);
setprg16(0xC000,1);
}
void CPROM_Init(CartInfo *info)
{
Latch_Init(info, CPROMSync, 0, 0x8000, 0xFFFF);
}
//------------------ Map 184 ---------------------------
static void M184Sync(void)
{
setchr4(0x0000,latche);
setchr4(0x1000,latche>>4);
setprg16(0x8000,0);
setprg16(0xC000,1);
}
void Mapper184_Init(CartInfo *info)
{
Latch_Init(info, M184Sync, 0, 0x6000, 0x7FFF);
}
//------------------ CNROM ---------------------------
static void CNROMSync(void)
{
setchr8(latche&3);
setprg16(0x8000,0);
setprg16(0xC000,1);
}
void CNROM_Init(CartInfo *info)
{
Latch_Init(info, CNROMSync, 0, 0x8000, 0xFFFF);
}
//------------------ ANROM ---------------------------
static void ANROMSync()
{
setprg32(0x8000,latche&0xf);
setmirror(MI_0+((latche>>4)&1));
setchr8(0);
}
void ANROM_Init(CartInfo *info)
{
Latch_Init(info, ANROMSync, 0, 0x8000, 0xFFFF);
}
//------------------ Map 70 ---------------------------
static void M70Sync()
{
setprg16(0x8000,latche>>4);
setprg16(0xc000,~0);
setchr8(latche&0xf);
}
void Mapper70_Init(CartInfo *info)
{
Latch_Init(info, M70Sync, 0, 0x8000, 0xFFFF);
}
//------------------ Map 152 ---------------------------
static void M152Sync()
{
setprg16(0x8000,(latche>>4)&7);
setprg16(0xc000,~0);
setchr8(latche&0xf);
setmirror(MI_0+((latche>>7)&1)); /* Saint Seiya...hmm. */
}
void Mapper152_Init(CartInfo *info)
{
Latch_Init(info, M152Sync, 0, 0x8000, 0xFFFF);
}
//------------------ Map 78 ---------------------------
/* Should be two separate emulation functions for this "mapper". Sigh. URGE TO KILL RISING. */
static void M78Sync()
{
setprg16(0x8000,(latche&7));
setprg16(0xc000,~0);
setchr8(latche>>4);
setmirror(MI_0+((latche>>3)&1));
}
void Mapper78_Init(CartInfo *info)
{
Latch_Init(info, M78Sync, 0, 0x8000, 0xFFFF);
}
//------------------ MHROM ---------------------------
static void MHROMSync(void)
{
setprg32(0x8000,latche>>4);
setchr8(latche&0xf);
}
void MHROM_Init(CartInfo *info)
{
Latch_Init(info, MHROMSync, 0, 0x8000, 0xFFFF);
}
void Mapper140_Init(CartInfo *info)
{
Latch_Init(info, MHROMSync, 0, 0x6000, 0x7FFF);
}
void Mapper240_Init(CartInfo *info)
{
Latch_Init(info, MHROMSync, 0, 0x4020, 0x5FFF);
// need SRAM.
}
//------------------ Map 87 ---------------------------
static void M87Sync(void)
{
setprg16(0x8000,0);
setprg16(0xC000,1);
setchr8(latche>>1);
}
void Mapper87_Init(CartInfo *info)
{
Latch_Init(info, M87Sync, ~0, 0x6000, 0xFFFF);
}
//------------------ Map 11 ---------------------------
static void M11Sync(void)
{
setprg32(0x8000,latche&0xf);
setchr8(latche>>4);
}
void Mapper11_Init(CartInfo *info)
{
Latch_Init(info, M11Sync, 0, 0x8000, 0xFFFF);
}
void Mapper144_Init(CartInfo *info)
{
Latch_Init(info, M11Sync, 0, 0x8001, 0xFFFF);
}
//------------------ UNROM ---------------------------
static void UNROMSync(void)
{
setprg16(0x8000,latche);
setprg16(0xc000,~0);
setchr8(0);
}
void UNROM_Init(CartInfo *info)
{
Latch_Init(info, UNROMSync, 0, 0x8000, 0xFFFF);
}
//------------------ Map 93 ---------------------------
static void SSUNROMSync(void)
{
setprg16(0x8000,latche>>4);
setprg16(0xc000,~0);
setchr8(0);
}
void SUNSOFT_UNROM_Init(CartInfo *info)
{
Latch_Init(info, SSUNROMSync, 0, 0x8000, 0xFFFF);
}
//------------------ Map 94 ---------------------------
static void M94Sync(void)
{
setprg16(0x8000,latche>>2);
setprg16(0xc000,~0);
setchr8(0);
}
void Mapper94_Init(CartInfo *info)
{
Latch_Init(info, M94Sync, 0, 0x8000, 0xFFFF);
}
//------------------ Map 180 ---------------------------
static void M180Sync(void)
{
setprg16(0x8000,0);
setprg16(0xc000,latche);
setchr8(0);
}
void Mapper180_Init(CartInfo *info)
{
Latch_Init(info, M180Sync, 0, 0x8000, 0xFFFF);
}
//------------------ Map 107 ---------------------------
static void M107Sync(void)
{
setprg32(0x8000,(latche>>1)&3);
setchr8(latche&7);
}
void Mapper107_Init(CartInfo *info)
{
Latch_Init(info, M107Sync, ~0, 0x8000, 0xFFFF);
}
//------------------ Map 113 ---------------------------
static void M113Sync(void)
{
setprg32(0x8000,(latche>>3)&7);
setchr8(((latche>>3)&8)|(latche&7));
// setmirror(latche>>7); // only for HES 6in1
}
void Mapper113_Init(CartInfo *info)
{
Latch_Init(info, M113Sync, 0, 0x4100, 0x7FFF);
}
//------------------ A65AS ---------------------------
// actually, there is two cart in one... First have extra mirroring
// mode (one screen) and 32K bankswitching, second one have only
// 16 bankswitching mode and normal mirroring... But there is no any
// correlations between modes and they can be used in one mapper code.
static void BMCA65ASSync(void)
{
if(latche&0x40)
setprg32(0x8000,(latche>>1)&0x0F);
else
{
setprg16(0x8000,((latche&0x30)>>1)|(latche&7));
setprg16(0xC000,((latche&0x30)>>1)|7);
}
setchr8(0);
if(latche&0x80)
setmirror(MI_0+(((latche>>5)&1)));
else
setmirror(((latche>>3)&1)^1);
}
void BMCA65AS_Init(CartInfo *info)
{
Latch_Init(info, BMCA65ASSync, 0, 0x8000, 0xFFFF);
}
//------------------ NROM ---------------------------
#ifdef DEBUG_MAPPER
static DECLFW(WriteHandler)
{
FCEU_printf("bs %04x %02x\n",A,V);
}
#endif
static void NROMPower(void)
{
setprg16(0x8000,0);
setprg16(0xC000,~0);
setchr8(0);
SetReadHandler(0x8000,0xFFFF,CartBR);
#ifdef DEBUG_MAPPER
SetWriteHandler(0x4020,0xFFFF,WriteHandler);
#endif
}
void NROM_Init(CartInfo *info)
{
info->Power=NROMPower;
}