mirror of
https://github.com/dborth/fceugx.git
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86 lines
2.1 KiB
C++
86 lines
2.1 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) 2007 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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#include "mapinc.h"
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static uint8 preg[4], creg, mirr;
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static SFORMAT StateRegs[] =
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{
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{ preg, 4, "PREG" },
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{ &creg, 1, "CREG" },
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{ &mirr, 1, "MIRR" },
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{ 0 }
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};
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static void Sync(void) {
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setprg8(0x6000, preg[0]);
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setprg8(0x8000, 0xa);
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setprg8(0xa000, 0xb);
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setprg8(0xc000, 0x6);
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setprg8(0xe000, 0x7);
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setchr8(0x0c);
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setmirror(mirr);
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}
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static DECLFW(UNLKS7010Write) {
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switch (A) {
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case 0x4025: mirr = (((V >> 3) & 1) ^ 1); Sync(); break;
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default:
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FCEU_printf("bs %04x %02x\n",A,V);
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break;
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}
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}
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static void UNLKS7010Reset(void) {
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preg[0]++;
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if(preg[0] == 0x10) {
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preg[0] = 0;
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preg[1]++;
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if(preg[1] == 0x10) {
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preg[1] = 0;
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preg[2]++;
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}
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}
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FCEU_printf("preg %02x %02x %02x\n",preg[0], preg[1], preg[2]);
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Sync();
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}
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static void UNLKS7010Power(void) {
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preg[0] = preg[1] = preg[2] = 0;
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Sync();
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SetReadHandler(0x6000, 0x7fff, CartBR);
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SetWriteHandler(0x6000, 0x7fff, CartBW);
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SetReadHandler(0x8000, 0xffff, CartBR);
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SetWriteHandler(0x4020, 0xffff, UNLKS7010Write);
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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 UNLKS7010_Init(CartInfo *info) {
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info->Power = UNLKS7010Power;
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info->Reset = UNLKS7010Reset;
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GameStateRestore = StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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