75 lines
1.9 KiB
C
75 lines
1.9 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 345
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* BMC-L6IN1
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* New Star 6-in-1 Game Cartridge
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* https://wiki.nesdev.com/w/index.php/NES_2.0_Mapper_345
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*/
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#include "mapinc.h"
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#include "mmc3.h"
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static void BMCL6IN1CW(uint32 A, uint8 V) {
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setchr8(V);
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}
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static void BMCL6IN1PW(uint32 A, uint8 V) {
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if (EXPREGS[0] & 0x0C)
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setprg8(A, (V & 0x0F) | (EXPREGS[0] & 0xC0) >> 2);
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else
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setprg32(0x8000, ((EXPREGS[0] & 0xC0) >> 4) | (EXPREGS[0] & 0x03));
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}
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static void BMCL6IN1MW(uint8 V) {
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if (EXPREGS[0] & 0x20)
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setmirror(MI_0 + ((EXPREGS[0] & 0x10) >> 1));
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else {
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A000B = V;
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setmirror((V & 1) ^ 1);
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}
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}
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static DECLFW(BMCL6IN1Write) {
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EXPREGS[0] = V;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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static void BMCL6IN1Reset(void) {
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EXPREGS[0] = 0;
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MMC3RegReset();
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}
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static void BMCL6IN1Power(void) {
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GenMMC3Power();
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SetWriteHandler(0x6000, 0x7FFF, BMCL6IN1Write);
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}
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void BMCL6IN1_Init(CartInfo *info) {
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GenMMC3_Init(info, 512, 0, 1, 0);
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pwrap = BMCL6IN1PW;
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cwrap = BMCL6IN1CW;
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mwrap = BMCL6IN1MW;
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info->Power = BMCL6IN1Power;
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info->Reset = BMCL6IN1Reset;
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AddExState(EXPREGS, 1, 0, "EXPR");
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}
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