f9fb33d8e8
- Silence warning [-Wmaybe-uninitialized] - m359: Fix value overflow - m534: Silence warnings - mmc1: Silence warnings - Silence more warnings
93 lines
2.7 KiB
C
93 lines
2.7 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 negativeExponent
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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 534 - 2-in-1 数独/五子棋 (Sudoku/Gomoku, NJ064) */
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#include "mapinc.h"
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#include "mmc3.h"
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static uint32 GetPRGBank(uint32 bank)
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{
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if (~bank & 1 && (MMC3_cmd & 0x40)) bank ^= 2;
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return (bank & 2) ? (0xFE | (bank & 1)) : DRegBuf[6 | (bank & 1)];
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}
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void SyncPRG_GNROM(int A14, int AND, int OR) {
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setprg8(0x8000, ((GetPRGBank(0) & ~A14) & AND) | OR);
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setprg8(0xA000, ((GetPRGBank(1) & ~A14) & AND) | OR);
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setprg8(0xC000, ((GetPRGBank(0) | A14) & AND) | OR);
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setprg8(0xE000, ((GetPRGBank(1) | A14) & AND) | OR);
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}
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static void M534PW(uint32 A, uint8 V) {
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if (EXPREGS[0] & 0x40)
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SyncPRG_GNROM(EXPREGS[3] & 0x02, 0x0F, ((EXPREGS[0] & 3) << 4));
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else
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setprg8(A, (V & 0x1F) | ((EXPREGS[0] & 0x2) << 4));
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}
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static void M534CW(uint32 A, uint8 V) {
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setchr1(A, (V & 0xFF) | ((EXPREGS[2] & 0x0F) << 3) | ((EXPREGS[0] & 0x18) << 4));
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}
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static DECLFW(M534IRQWrite) {
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MMC3_IRQWrite(0xC000 | (A & 1), V ^ 0xFF);
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}
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static DECLFW(M534WriteLo) {
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if ((A & 0x800) && (!(EXPREGS[3] & 0x80) || (A & 3) == 2)) {
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EXPREGS[A & 3] = V;
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FixMMC3CHR(MMC3_cmd);
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FixMMC3PRG(MMC3_cmd);
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}
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}
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static void M534Power(void) {
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EXPREGS[0] = 0x00;
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EXPREGS[1] = 0x00;
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EXPREGS[2] = 0x00;
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EXPREGS[3] = 0x00;
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GenMMC3Power();
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SetWriteHandler(0x6000, 0x6FFF, M534WriteLo);
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SetWriteHandler(0xC000, 0xDFFF, M534IRQWrite);
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}
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static void M534Reset(void) {
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EXPREGS[0] = 0x00;
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EXPREGS[1] = 0x00;
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EXPREGS[2] = 0x00;
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EXPREGS[3] = 0x00;
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EXPREGS[4] = (EXPREGS[4] + 1) & 7;
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FCEU_printf("dipswitch = %d\n", EXPREGS[4]);
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MMC3RegReset();
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}
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static void M534Close(void) {
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}
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void Mapper534_Init(CartInfo *info) {
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GenMMC3_Init(info, 512, 512, 0, 0);
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pwrap = M534PW;
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cwrap = M534CW;
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info->Power = M534Power;
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info->Reset = M534Reset;
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info->Close = M534Close;
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AddExState(EXPREGS, 5, 0, "EXPR");
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}
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