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https://github.com/dborth/fceugx.git
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69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2008 CaH4e3
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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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// M-022 MMC3 based 830118C T-106 4M + 4M
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#include "mapinc.h"
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#include "mmc3.h"
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static void BMC830118CCW(uint32 A, uint8 V) {
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setchr1(A, (V & 0x7F) | ((EXPREGS[0] & 0x0c) << 5));
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}
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static void BMC830118CPW(uint32 A, uint8 V) {
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if ((EXPREGS[0] & 0x0C) == 0x0C) {
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if (A == 0x8000) {
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setprg8(A, (V & 0x0F) | ((EXPREGS[0] & 0x0c) << 2));
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setprg8(0xC000, (V & 0x0F) | 0x32);
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} else if (A == 0xA000) {
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setprg8(A, (V & 0x0F) | ((EXPREGS[0] & 0x0c) << 2));
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setprg8(0xE000, (V & 0x0F) | 0x32);
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}
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} else {
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setprg8(A, (V & 0x0F) | ((EXPREGS[0] & 0x0c) << 2));
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}
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}
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static DECLFW(BMC830118CLoWrite) {
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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 BMC830118CReset(void) {
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EXPREGS[0] = 0;
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MMC3RegReset();
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}
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static void BMC830118CPower(void) {
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EXPREGS[0] = 0;
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GenMMC3Power();
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SetWriteHandler(0x6800, 0x68FF, BMC830118CLoWrite);
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}
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void BMC830118C_Init(CartInfo *info) {
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GenMMC3_Init(info, 128, 128, 8, 0);
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pwrap = BMC830118CPW;
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cwrap = BMC830118CCW;
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info->Power = BMC830118CPower;
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info->Reset = BMC830118CReset;
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AddExState(EXPREGS, 1, 0, "EXPR");
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}
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