56 lines
1.6 KiB
C
56 lines
1.6 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) 2025 NewRisingSun
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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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#include "mmc3.h"
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#include "flashrom.h"
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uint8 submapper;
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static DECLFW(Write) {
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flashrom_write(A &0x1FFF | (Page[A >>11] +A -PRGptr[0]) &~0x1FFF, V);
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if (submapper ==1)
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A =A <0xA000 || A >=0xE000? (A ^0x6000): A;
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else
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A =A &0xE000 | A >>1 &0x0001;
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if (A &0x4000)
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MMC3_IRQWrite(A, V);
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else
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MMC3_CMDWrite(A, V);
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}
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static void Power(void) {
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GenMMC3Power();
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SetReadHandler(0x8000, 0xFFFF, flashrom_read);
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SetWriteHandler(0x8000, 0xFFFF, Write);
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}
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void Mapper406_Init(CartInfo *info) {
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submapper =info->submapper;
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GenMMC3_Init(info, 512, 256, 0, 0);
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flashrom_init (submapper ==1? 0x01: 0xC2, 0xA4, 65536, 0x5555, 0x2AAA, 0x7FFF); /* Macronix MX29F040 (0)/AMD AM29F040 (1) */
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info->Power =Power;
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info->SaveGame[0] =PRGptr[0];
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info->SaveGameLen[0] =PRGsize[0];
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MapIRQHook =flashrom_cpuCycle;
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}
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