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...)
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/* FCEUmm - NES/Famicom Emulator
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*
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* Copyright (C) 2019 Libretro Team
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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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*/
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/* NES 2.0 Mapper 320 is used for the Super HiK 6-in-1 A-030 multicart.
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* Basically UxROM with an address-latch-based outer bank register.
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* UNIF board name is BMC-830425C-4391T. Mirroring is hard-wired.
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* http://wiki.nesdev.com/w/index.php/NES_2.0_Mapper_320
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*/
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#include "mapinc.h"
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static uint8 bank_size;
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static uint8 inner_bank;
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static uint8 outer_bank;
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static SFORMAT StateRegs[] =
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{
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{ &inner_bank, 1, "INNB" },
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{ &outer_bank, 1, "OUTB" },
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{ &bank_size, 1, "SIZE" },
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{ 0 }
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};
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static void Sync(void) {
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setprg16(0x8000, (outer_bank << 3) | (inner_bank & bank_size));
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setprg16(0xC000, (outer_bank << 3) | bank_size);
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setchr8(0);
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}
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static DECLFW(M320Write) {
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/* address mask is inconsistent with that is in the wiki. Mask should be
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* 0xFFE0 or Mermaid game will not work. */
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if ((A & 0xFFE0) == 0xF0E0) {
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outer_bank = (A & 0x0F);
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bank_size = (A & 0x10) ? 0x07 : 0x0F;
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}
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inner_bank = (V & 0x0F);
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Sync();
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}
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static void M320Power(void) {
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bank_size = 0x0F;
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Sync();
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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SetWriteHandler(0x8000, 0xFFFF, M320Write);
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}
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static void M320Reset(void) {
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inner_bank = outer_bank = 0;
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bank_size = 0x0F;
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Sync();
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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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void BMC830425C4391T_Init(CartInfo *info) {
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info->Power = M320Power;
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info->Reset = M320Reset;
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GameStateRestore = StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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