69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/* FCEUmm - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2019 Libretro Team
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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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/* NES 2.0 Mapper 344
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* BMC-GN-26
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* Kuai Da Jin Ka Zhong Ji Tiao Zhan 3-in-1 (3-in-1,6-in-1,Unl)
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*/
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#include "mapinc.h"
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#include "mmc3.h"
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static void BMCGN26CW(uint32 A, uint8 V) {
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int chrAND = EXPREGS[0]&0x04? 0xFF: 0x7F;
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int chrOR = EXPREGS[0] <<7;
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setchr1(A, V &chrAND | chrOR &~chrAND);
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}
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static void BMCGN26PW(uint32 A, uint8 V) {
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if (EXPREGS[0] & 4) {
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if (A == 0x8000)
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setprg32(0x8000, (EXPREGS[0] << 2) | (V >> 2));
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} else
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setprg8(A, (EXPREGS[0] << 4) | (V & 0x0F));
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}
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static DECLFW(BMCGN26Write) {
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if (A001B &0x80 && ~A001B &0x40) {
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EXPREGS[0] = A;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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}
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static void BMCGN26Reset(void) {
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EXPREGS[0] = 0;
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MMC3RegReset();
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}
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static void BMCGN26Power(void) {
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GenMMC3Power();
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SetWriteHandler(0x6000, 0x7FFF, BMCGN26Write);
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}
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void BMCGN26_Init(CartInfo *info) {
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GenMMC3_Init(info, 128, 256, 1, 0);
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pwrap = BMCGN26PW;
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cwrap = BMCGN26CW;
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info->Power = BMCGN26Power;
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info->Reset = BMCGN26Reset;
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AddExState(EXPREGS, 1, 0, "EXPR");
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}
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