mirror of
https://github.com/dborth/fceugx.git
synced 2024-11-01 15:05:05 +01:00
78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
/* FCE Ultra - NES/Famicom Emulator
|
|
*
|
|
* Copyright notice for this file:
|
|
* Copyright (C) 2009 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[4];
|
|
static SFORMAT StateRegs[]=
|
|
{
|
|
{reg, 4, "REGS"},
|
|
{0}
|
|
};
|
|
|
|
static void Sync(void)
|
|
{
|
|
uint8 bank = (reg[3]&3)<<3;
|
|
setchr4(0x0000, (reg[1]>>3)|(bank<<2));
|
|
setchr4(0x1000, (reg[2]>>3)|(bank<<2));
|
|
if(reg[3]&8)
|
|
{
|
|
setprg32(0x8000,((reg[2]&7)>>1)|bank);
|
|
}
|
|
else
|
|
{
|
|
setprg16(0x8000, (reg[1]&7)|bank);
|
|
setprg16(0xc000, 7|bank);
|
|
}
|
|
setmirror(((reg[3]&4)>>2)^1);
|
|
}
|
|
|
|
static DECLFW(BMC12IN1Write)
|
|
{
|
|
switch(A)
|
|
{
|
|
case 0xafff: reg[0] = V; break;
|
|
case 0xbfff: reg[1] = V; break;
|
|
case 0xdfff: reg[2] = V; break;
|
|
case 0xefff: reg[3] = V; break;
|
|
}
|
|
Sync();
|
|
}
|
|
|
|
static void BMC12IN1Power(void)
|
|
{
|
|
reg[0]=reg[1]=reg[2]=reg[3]=0;
|
|
Sync();
|
|
SetReadHandler(0x8000,0xFFFF,CartBR);
|
|
SetWriteHandler(0x8000,0xFFFF,BMC12IN1Write);
|
|
}
|
|
|
|
static void StateRestore(int version)
|
|
{
|
|
Sync();
|
|
}
|
|
|
|
void BMC12IN1_Init(CartInfo *info)
|
|
{
|
|
info->Power=BMC12IN1Power;
|
|
GameStateRestore=StateRestore;
|
|
AddExState(&StateRegs, ~0, 0, 0);
|
|
}
|