mirror of
https://github.com/dborth/fceugx.git
synced 2024-05-29 06:08:43 +02:00
69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
/* FCE Ultra - NES/Famicom Emulator
|
|
*
|
|
* Copyright notice for this file:
|
|
* Copyright (C) 2012 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 bank, preg;
|
|
static SFORMAT StateRegs[] =
|
|
{
|
|
{ &bank, 1, "BANK" },
|
|
{ &preg, 1, "PREG" },
|
|
{ 0 }
|
|
};
|
|
|
|
static void Sync(void) {
|
|
// uint32 bbank = (bank & 0x18) >> 1;
|
|
uint32 bbank = ((bank & 0x10) >> 2) | (bank & 8); // some dumps have bbanks swapped, if swap commands,
|
|
// then all roms can be played, but with some swapped
|
|
// games in menu. if not, some dumps are unplayable
|
|
// make hard dump for both cart types to check
|
|
setprg16(0x8000, bbank | (preg & 3));
|
|
setprg16(0xC000, bbank | 3);
|
|
setchr8(0);
|
|
}
|
|
|
|
static DECLFW(M232WriteBank) {
|
|
bank = V;
|
|
Sync();
|
|
}
|
|
|
|
static DECLFW(M232WritePreg) {
|
|
preg = V;
|
|
Sync();
|
|
}
|
|
|
|
static void M232Power(void) {
|
|
bank = preg = 0;
|
|
Sync();
|
|
SetWriteHandler(0x8000, 0xBFFF, M232WriteBank);
|
|
SetWriteHandler(0xC000, 0xFFFF, M232WritePreg);
|
|
SetReadHandler(0x8000, 0xFFFF, CartBR);
|
|
}
|
|
|
|
static void StateRestore(int version) {
|
|
Sync();
|
|
}
|
|
|
|
void Mapper232_Init(CartInfo *info) {
|
|
info->Power = M232Power;
|
|
AddExState(&StateRegs, ~0, 0, 0);
|
|
GameStateRestore = StateRestore;
|
|
}
|