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/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2005 CaH4e3
*
* 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
*
* CAI Shogakko no Sansu
*/
#include "mapinc.h"
static uint8 *CHRRAM=NULL;
static uint8 SWRAM[4096];
static uint8 regs[16];
static uint8 WRAM[4096];
static SFORMAT StateRegs[]=
{
{®s, 16, "REGS"},
{WRAM, 4096, "WRAM"},
{0}
};
static void Sync(void)
{
if(regs[5]&0x40)
{
setchr4r(0,0x1000,regs[5]&0x3F);
}
else
{
setchr4r(0x10,0x0000,regs[5]);
setchr4r(0x10,0x1000,regs[5]^1);
}
setprg8r((regs[2]>>6)&1,0x8000,(regs[2]&0x3F));
setprg8r((regs[3]>>6)&1,0xA000,(regs[3]&0x3F));
setprg8r((regs[4]>>6)&1,0xC000,(regs[4]&0x3F));
setprg8r(1,0xE000,~0);
setmirror((regs[0xA]&3));
}
static DECLFW(M190Write)
{
// FCEU_printf("write %04x:%04x %d, %d\n",A,V,scanline,timestamp);
regs[(A&0x0F00)>>8]=V;
Sync();
}
static DECLFR(M190Read)
{
// FCEU_printf("read %04x:%04x %d, %d\n",A,regs[(A&0x0F00)>>8],scanline,timestamp);
return regs[(A&0x0F00)>>8];
}
static DECLFR(AWRAM)
{
return(WRAM[A-0x7000]);
}
static DECLFW(BWRAM)
{
WRAM[A-0x7000]=V;
}
static DECLFR(ASWRAM)
{
return(SWRAM[A-0x6000]);
}
static DECLFW(BSWRAM)
{
SWRAM[A-0x6000]=V;
}
static void M190Power(void)
{
setvram8(CHRRAM);
SetReadHandler(0x8000,0xFFFF,CartBR);
SetWriteHandler(0x8000,0xFFFF,M190Write);
// SetReadHandler(0xDA00,0xDA00,M190Read);
// SetReadHandler(0xDB00,0xDB00,M190Read);
SetReadHandler(0xDC00,0xDC00,M190Read);
SetReadHandler(0xDD00,0xDD00,M190Read);
SetReadHandler(0x7000,0x7FFF,AWRAM);
SetWriteHandler(0x7000,0x7FFF,BWRAM);
SetReadHandler(0x6000,0x6FFF,ASWRAM);
SetWriteHandler(0x6000,0x6FFF,BSWRAM);
Sync();
}
static void M190Close(void)
{
if(CHRRAM)
FCEU_gfree(CHRRAM);
CHRRAM=NULL;
}
static void StateRestore(int version)
{
Sync();
}
void Mapper190_Init(CartInfo *info)
{
info->Power=M190Power;
info->Close=M190Close;
if(info->battery)
{
info->SaveGame[0]=SWRAM;
info->SaveGameLen[0]=4096;
}
GameStateRestore=StateRestore;
CHRRAM=(uint8*)FCEU_gmalloc(8192);
SetupCartCHRMapping(0x10,CHRRAM,8192,1);
AddExState(CHRRAM, 8192, 0, "CHRRAM");
AddExState(&StateRegs, ~0, 0, 0);
}
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