429f6c4545
- fixes (if necessary), update and cleanup the following boards that now dont need alternate mappings: - this is part of migrating unif to be usuable in ines mappers - boards affected in this commit are: SUPERVISION16IN1, GS-2004, GS-2013, UNL-SMB2J, MARIO1-MALEE2, UNL-SA-9602B, UNL-KS106C / RESETNROM-XIN1 UNL-AC08, NES-NTBROM, BMC-K-3033, BMC-GN-26, BMC-GHOSTBUSTERS63IN1, BMC-830425C-4391T BMC-830134C, BMC-891227 / BMC-CTC-12IN1, BMC-JC-016-2, UNL-T4A54A, UNL-8157, BMC-T-262 (might have forgotten to list some...)
97 lines
2.5 KiB
C
97 lines
2.5 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) 2007 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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* 63in1 ghostbusters
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*/
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#include "mapinc.h"
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static uint8 reg[2], bank;
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static uint8 banks[4] = { 0, 0, 1, 2 };
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static uint8 *CHRROM = NULL;
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static uint32 CHRROMSIZE;
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static SFORMAT StateRegs[] =
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{
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{ reg, 2, "REGS" },
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{ &bank, 1, "BANK" },
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{ 0 }
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};
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static void Sync(void) {
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if (reg[0] & 0x20) {
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setprg16(0x8000, (banks[bank] << 5) | (reg[0] & 0x1F));
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setprg16(0xC000, (banks[bank] << 5) | (reg[0] & 0x1F));
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} else
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setprg32(0x8000, ((banks[bank] << 5) | (reg[0] & 0x1F)) >> 1);
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if (reg[1] & 2)
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setchr8r(0x10, 0);
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else
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setchr8(0);
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setmirror((reg[0] & 0x40) >> 6);
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}
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static DECLFW(BMCGhostbusters63in1Write) {
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reg[A & 1] = V;
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bank = ((reg[0] & 0x80) >> 7) | ((reg[1] & 1) << 1);
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/* FCEU_printf("reg[0]=%02x, reg[1]=%02x, bank=%02x\n",reg[0],reg[1],bank); */
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Sync();
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}
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static DECLFR(BMCGhostbusters63in1Read) {
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if (bank == 1)
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return X.DB;
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else
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return CartBR(A);
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}
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static void BMCGhostbusters63in1Power(void) {
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reg[0] = reg[1] = 0;
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Sync();
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SetReadHandler(0x8000, 0xFFFF, BMCGhostbusters63in1Read);
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SetWriteHandler(0x8000, 0xFFFF, BMCGhostbusters63in1Write);
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}
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static void BMCGhostbusters63in1Reset(void) {
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reg[0] = reg[1] = 0;
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}
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static void StateRestore(int version) {
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Sync();
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}
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static void BMCGhostbusters63in1Close(void) {
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if (CHRROM)
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FCEU_gfree(CHRROM);
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CHRROM = NULL;
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}
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void BMCGhostbusters63in1_Init(CartInfo *info) {
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info->Reset = BMCGhostbusters63in1Reset;
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info->Power = BMCGhostbusters63in1Power;
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info->Close = BMCGhostbusters63in1Close;
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CHRROMSIZE = 8192; /* dummy CHRROM, VRAM disable */
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CHRROM = (uint8*)FCEU_gmalloc(CHRROMSIZE);
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SetupCartPRGMapping(0x10, CHRROM, CHRROMSIZE, 0);
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AddExState(CHRROM, CHRROMSIZE, 0, "CROM");
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GameStateRestore = StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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