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https://github.com/dborth/fceugx.git
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96 lines
2.3 KiB
C++
96 lines
2.3 KiB
C++
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2006 CaH4e3
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* 700in1 and 400in1 carts
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*
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*/
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#include "mapinc.h"
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static uint16 cmd, bank;
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static SFORMAT StateRegs[] =
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{
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{ &cmd, 2, "CMD" },
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{ &bank, 2, "BANK" },
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{ 0 }
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};
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static void Sync(void) {
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setmirror((cmd & 1) ^ 1);
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setchr8(0);
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if (cmd & 2) {
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if (cmd & 0x100) {
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setprg16(0x8000, ((cmd & 0xfc) >> 2) | bank);
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setprg16(0xC000, ((cmd & 0xfc) >> 2) | 7);
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} else {
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setprg16(0x8000, ((cmd & 0xfc) >> 2) | (bank & 6));
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setprg16(0xC000, ((cmd & 0xfc) >> 2) | ((bank & 6) | 1));
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}
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} else {
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setprg16(0x8000, ((cmd & 0xfc) >> 2) | bank);
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setprg16(0xC000, ((cmd & 0xfc) >> 2) | bank);
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}
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}
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static uint16 ass = 0;
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static DECLFW(UNLN625092WriteCommand) {
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cmd = A;
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if (A == 0x80F8) {
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setprg16(0x8000, ass);
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setprg16(0xC000, ass);
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} else {
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Sync();
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}
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}
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static DECLFW(UNLN625092WriteBank) {
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bank = A & 7;
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Sync();
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}
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static void UNLN625092Power(void) {
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cmd = 0;
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bank = 0;
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Sync();
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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SetWriteHandler(0x8000, 0xBFFF, UNLN625092WriteCommand);
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SetWriteHandler(0xC000, 0xFFFF, UNLN625092WriteBank);
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}
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static void UNLN625092Reset(void) {
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cmd = 0;
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bank = 0;
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ass++;
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FCEU_printf("%04x\n", ass);
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}
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static void StateRestore(int version) {
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Sync();
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}
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void UNLN625092_Init(CartInfo *info) {
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info->Reset = UNLN625092Reset;
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info->Power = UNLN625092Power;
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GameStateRestore = StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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