86 lines
2.2 KiB
C
86 lines
2.2 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) 2020
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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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*/
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/* Mapper 411 - A88S-1
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* 1997 Super 7-in-1 (JY-201)
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* 1997 Super 6-in-1 (JY-202)
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* 1997 Super 7-in-1 (JY-203)
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* 1997 龍珠武鬥會 7-in-1 (JY-204)
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* 1997 Super 7-in-1 (JY-205)
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* 1997 Super 7-in-1 (JY-206)
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*/
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#include "mapinc.h"
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#include "mmc3.h"
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static void M411CW(uint32 A, uint8 V) {
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uint32 mask = (EXPREGS[1] & 2) ? 0xFF : 0x7F;
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V &= mask;
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setchr1(A, V | ((EXPREGS[1] << 5) & 0x80) | ((EXPREGS[0] << 4) & 0x100));
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}
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static void M411PW(uint32 A, uint8 V) {
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/* NROM Mode */
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if (EXPREGS[0] & 0x40)
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{
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uint32 bank = (EXPREGS[0] & 1) | ((EXPREGS[0] >> 2) & 2) | (EXPREGS[0] & 4) | (EXPREGS[1] & 8) | ((EXPREGS[1] >> 2) & 0x10);
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/* NROM-256 */
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if (EXPREGS[0] & 0x02) {
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setprg32(0x8000, bank >> 1);
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/* NROM-128 */
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} else {
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setprg16(0x8000, bank);
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setprg16(0xC000, bank);
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}
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}
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/* MMC3 Mode */
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else
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{
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uint32 mask = (EXPREGS[1] & 2) ? 0x1F : 0x0F;
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V &= mask;
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setprg8(A, V | ((EXPREGS[1] << 1) & 0x10) | ((EXPREGS[1] >> 1) & 0x20));
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}
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}
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static DECLFW(M411Write5000) {
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EXPREGS[A & 1] = 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 M411Power(void) {
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EXPREGS[0] = 0x80;
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EXPREGS[1] = 0x82;
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GenMMC3Power();
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SetWriteHandler(0x5000, 0x5FFF, M411Write5000);
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}
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void Mapper411_Init(CartInfo *info) {
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GenMMC3_Init(info, 256, 256, 0, 0);
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pwrap = M411PW;
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cwrap = M411CW;
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info->Power = M411Power;
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AddExState(EXPREGS, 2, 0, "EXPR");
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}
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