d6da335f54
mapper 4 - fixed savestates for mmc3 based mappers broken with kt-008 board UNIF COOLBOY - new dump support
93 lines
2.7 KiB
C
93 lines
2.7 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) 2015 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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* CoolBoy 400-in-1 FK23C-mimic mapper 32Mb PROM + 128K CHR RAM, no wram, no CROM
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* only MMC3 mode
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*
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*/
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#include "mapinc.h"
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#include "mmc3.h"
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static void COOLBOYCW(uint32 A, uint8 V) {
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if(EXPREGS[3] & 0x10)
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setchr8(EXPREGS[2] & 0xF);
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else
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setchr1(A, V);
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}
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static void COOLBOYPW(uint32 A, uint8 V) {
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uint32 mask, shift;
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uint32 base = ((EXPREGS[0] & 0x07) >> 0) | ((EXPREGS[1] & 0x10) >> 1) | ((EXPREGS[1] & 0x0C) << 2) | ((EXPREGS[0] & 0x30) << 2);
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switch(EXPREGS[0]&0xC0) {
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case 0x00:
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mask = 0x3F;
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shift = 6;
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break;
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case 0xC0:
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shift = 4;
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if(EXPREGS[3] & 0x10) {
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mask = 0x03;
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} else {
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mask = 0x0F;
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}
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break;
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}
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if(EXPREGS[3] & 0x10)
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setprg8(A, (base << shift) | (V & mask) | (EXPREGS[3] & 0x0C) /*| EXPREGS[2] & 2*/);
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else
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setprg8(A, (base << shift) | (V & mask));
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}
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static DECLFW(COOLBOYWrite) {
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if((EXPREGS[3] & 0x80) == 0) {
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EXPREGS[A & 3] = V;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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uint32 base = ((EXPREGS[0] & 0x07) >> 0) | ((EXPREGS[1] & 0x10) >> 1) | ((EXPREGS[1] & 0x0C) << 2) | ((EXPREGS[0] & 0x30) << 2);
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FCEU_printf("exp %02x %02x (base %03d)\n",A,V,base);
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}
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}
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static void COOLBOYReset(void) {
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MMC3RegReset();
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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static void COOLBOYPower(void) {
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GenMMC3Power();
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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SetWriteHandler(0x5000, 0x5fff, CartBW); // some games access random unmapped areas and crashes because of KT-008 PCB hack in MMC3 source lol
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SetWriteHandler(0x6000, 0x6fff, COOLBOYWrite);
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}
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void COOLBOY_Init(CartInfo *info) {
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GenMMC3_Init(info, 512, 128, 0, 0);
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pwrap = COOLBOYPW;
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cwrap = COOLBOYCW;
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info->Power = COOLBOYPower;
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info->Reset = COOLBOYReset;
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AddExState(EXPREGS, 4, 0, "EXPR");
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}
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