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ci-libretro-fceumm/src/boards/190.c
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91 lines
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C

/* FCE Ultra - NES/Famicom Emulator
*
* Copyright (C) 2017 FCEUX Team
*
* 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
*
* Magic Kid GooGoo
*/
#include "mapinc.h"
static uint8 preg, creg[4];
static uint8 *WRAM = NULL;
static SFORMAT StateRegs[] =
{
{ &preg, 1, "PREG" },
{ creg, 4, "CREG" },
{ 0 }
};
static void Sync(void) {
setprg8r(0x10, 0x6000, 0);
setprg16(0x8000, preg);
setprg16(0xC000, 0);
setchr2(0x0000, creg[0]);
setchr2(0x0800, creg[1]);
setchr2(0x1000, creg[2]);
setchr2(0x1800, creg[3]);
}
static DECLFW(M190Write89) {
preg = V & 7;
Sync();
}
static DECLFW(M190WriteCD) {
preg = 8 | (V & 7);
Sync();
}
static DECLFW(M190WriteAB) {
creg[A & 3] = V;
Sync();
}
static void M190Power(void) {
creg[0] = creg[1] = creg[2] = creg[3] = 0;
preg = 0;
FCEU_CheatAddRAM(0x2000 >> 10, 0x6000, WRAM);
SetReadHandler(0x6000, 0xFFFF, CartBR);
SetWriteHandler(0x6000, 0x7FFF, CartBW);
SetWriteHandler(0x8000, 0x9FFF, M190Write89);
SetWriteHandler(0xA000, 0xBFFF, M190WriteAB);
SetWriteHandler(0xC000, 0xDFFF, M190WriteCD);
setmirror(MI_V);
Sync();
}
static void M190Close(void) {
if (WRAM)
FCEU_gfree(WRAM);
WRAM = NULL;
}
static void StateRestore(int version) {
Sync();
}
void Mapper190_Init(CartInfo *info) {
info->Power = M190Power;
info->Close = M190Close;
WRAM = (uint8*)FCEU_gmalloc(0x2000);
SetupCartPRGMapping(0x10, WRAM, 0x2000, 1);
AddExState(WRAM, 0x2000, 0, "WRAM");
GameStateRestore = StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}