fceugx/source/fceultra/boards/ks7012.cpp

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2012-12-14 18:18:20 +01:00
/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2007 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "mapinc.h"
static uint8 reg;
static uint8 *WRAM=NULL;
static uint32 WRAMSIZE;
static SFORMAT StateRegs[]=
{
{&reg, 1, "REGS"},
{0}
};
static void Sync(void)
{
setprg8r(0x10,0x6000,0);
setprg32(0x8000,reg&1);
setchr8(0);
}
static DECLFW(UNLKS7012Write)
{
// FCEU_printf("bs %04x %02x\n",A,V);
switch(A)
{
case 0xE0A0: reg=0; Sync(); break;
case 0xEE36: reg=1; Sync(); break;
}
}
static void UNLKS7012Power(void)
{
reg = ~0;
Sync();
SetReadHandler(0x6000,0x7FFF,CartBR);
SetWriteHandler(0x6000,0x7FFF,CartBW);
SetReadHandler(0x8000,0xFFFF,CartBR);
SetWriteHandler(0x8000,0xFFFF,UNLKS7012Write);
}
static void UNLKS7012Reset(void)
{
reg = ~0;
Sync();
}
static void StateRestore(int version)
{
Sync();
}
static void UNLKS7012Close(void)
{
if(WRAM)
FCEU_gfree(WRAM);
WRAM=NULL;
}
void UNLKS7012_Init(CartInfo *info)
{
info->Power=UNLKS7012Power;
info->Reset=UNLKS7012Reset;
info->Close=UNLKS7012Close;
WRAMSIZE=8192;
WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);
SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);
AddExState(WRAM, WRAMSIZE, 0, "WRAM");
GameStateRestore=StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}