170 lines
3.6 KiB
C
170 lines
3.6 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) 2005 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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#include "mapinc.h"
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#include "mmc3.h"
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static uint8 *CHRRAM = NULL;
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static int masko8[8] = { 63, 31, 15, 1, 3, 0, 0, 0 };
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static uint8 oldversion = 0;
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// this mapper is 176 rip mapper.
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static void Super24PW(uint32 A, uint8 V) {
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if (oldversion == 1)
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{
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uint32 NV = V & masko8[EXPREGS[0] & 7];
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NV |= (EXPREGS[1] << 1);
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setprg8r((NV >> 6) & 0xF, A, NV);
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}
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else
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{
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setprg8(A, (EXPREGS[1] << 1) | (V & masko8[EXPREGS[0] & 0x7]));
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}
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}
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static void Super24CW(uint32 A, uint8 V) {
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if (oldversion == 1)
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{
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if (EXPREGS[0] & 0x20)
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setchr1r(0x10, A, V);
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else {
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uint32 NV = V | (EXPREGS[2] << 3);
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setchr1r((NV >> 9) & 0xF, A, NV);
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}
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}
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else
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{
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if (EXPREGS[0] & 0x20)
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setchr1r(0x10, A, (EXPREGS[2] << 3) | V);
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else
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setchr1r(0x00, A, (EXPREGS[2] << 3) | V);
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}
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}
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static DECLFW(Super24Write) {
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if (oldversion == 1)
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{
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switch (A) {
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case 0x5FF0:
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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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break;
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case 0x5FF1:
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EXPREGS[1] = V;
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FixMMC3PRG(MMC3_cmd);
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break;
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case 0x5FF2:
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EXPREGS[2] = V;
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FixMMC3CHR(MMC3_cmd);
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break;
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}
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}
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else
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{
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switch (A & 0xF003) {
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case 0x5000:
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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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break;
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case 0x5001:
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EXPREGS[1] = V;
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FixMMC3PRG(MMC3_cmd);
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break;
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case 0x5002:
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EXPREGS[2] = V;
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FixMMC3CHR(MMC3_cmd);
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break;
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}
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}
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}
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static void Super24Power(void) {
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EXPREGS[0] = 0x24;
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EXPREGS[1] = 159;
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EXPREGS[2] = 0;
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GenMMC3Power();
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SetWriteHandler(0x5000, 0x7FFF, Super24Write);
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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}
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static void Super24Reset(void) {
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EXPREGS[0] = 0x24;
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EXPREGS[1] = 159;
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EXPREGS[2] = 0;
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MMC3RegReset();
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}
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static void Super24Close(void) {
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if (CHRRAM)
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FCEU_gfree(CHRRAM);
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CHRRAM = NULL;
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}
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void Super24_Init(CartInfo *info) {
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if (oldversion == 0)
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{
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uint8* _CHRptr;
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uint8* _PRGptr;
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uint32 _CHROffset = 0;
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uint32 _PRGOffset = 0;
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uint32 _PRGsize = 0;
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uint32 _CHRsize = 0;
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int i = 0;
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for (i = 0;i < 4;i++)
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{
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_PRGsize += PRGsize[i];
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_CHRsize += CHRsize[i];
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}
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_CHRptr = (uint8*)FCEU_gmalloc(_CHRsize);
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for (i = 0;i < 4;i++)
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{
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memcpy(&_CHRptr[_CHROffset], CHRptr[i], CHRsize[i]);
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_CHROffset += CHRsize[i];
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}
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_PRGptr = (uint8*)FCEU_gmalloc(_PRGsize);
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for (i = 0;i < 4;i++)
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{
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memcpy(&_PRGptr[_PRGOffset], PRGptr[i], PRGsize[i]);
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_PRGOffset += PRGsize[i];
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}
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SetupCartCHRMapping(0, _CHRptr, _CHRsize, 0);
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SetupCartPRGMapping(0, _PRGptr, _PRGsize, 0);
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}
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GenMMC3_Init(info, 512, 512, 0, 0);
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info->Power = Super24Power;
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info->Reset = Super24Reset;
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info->Close = Super24Close;
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cwrap = Super24CW;
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pwrap = Super24PW;
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CHRRAM = (uint8*)FCEU_gmalloc(8192);
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SetupCartCHRMapping(0x10, CHRRAM, 8192, 1);
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AddExState(CHRRAM, 8192, 0, "CHRR");
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AddExState(EXPREGS, 3, 0, "BIG2");
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}
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