fceugx/source/fceultra/boards/72.cpp
2012-12-14 17:18:20 +00:00

65 lines
1.6 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
*
* Moero!! Pro Tennis have ADPCM codec on-board, PROM isn't dumped, emulation isn't
* possible just now.
*/
#include "mapinc.h"
static uint8 preg, creg;
static SFORMAT StateRegs[] =
{
{ &preg, 1, "PREG" },
{ &creg, 1, "CREG" },
{ 0 }
};
static void Sync(void) {
setprg16(0x8000, preg);
setprg16(0xC000, ~0);
setchr8(creg);
}
static DECLFW(M72Write) {
if (V & 0x80)
preg = V & 0xF;
if (V & 0x40)
creg = V & 0xF;
Sync();
}
static void M72Power(void) {
Sync();
SetReadHandler(0x8000, 0xFFFF, CartBR);
SetWriteHandler(0x6000, 0xFFFF, M72Write);
}
static void StateRestore(int version) {
Sync();
}
void Mapper72_Init(CartInfo *info) {
info->Power = M72Power;
GameStateRestore = StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}