8e5651a1fa
* M061: Add CHR-ROM variant. * M227: Make DIP switch change only apply to submapper 1 * M242: Only assume DIP/solder pad read when A0-A7 are zero, corrects ET-187 and Xing-2462. Initialize M227's and M242's DIP switch setting on Hard Reset. * M052: Support CHR-RAM-less variant of submapper 14. * M364: Correct the outer bank register's address mask, for LT-953 multicart. * M047: Supprt larger-sized multicarts using a compatible PCB. Reset to menu. * M360: Add submapper 1. * M221: Rewrite, add submapper 1 variant. * M288: Remove bank masks to allow for already-existing larger cartridges. * M411: Add submappers. * M417: Add submapper 1. * M115: Add multicart functionalities. * M201: Simplify and correct the power-on value. CF-043, mentioned in the source code comment, needs no submapper; just a correct header with Horizontal mirroring. * M200: Correct the power-on value. * M432: Add submappers to distinguish three variants. * Add mapper 412. --------- Co-authored-by: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
84 lines
2.2 KiB
C
84 lines
2.2 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) 2006 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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* 700in1 and 400in1 carts
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* 1000-in-1
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*/
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#include "mapinc.h"
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static uint16 reg[2];
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static uint8 submapper;
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static SFORMAT StateRegs[] ={
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{ reg, 4 | FCEUSTATE_RLSB, "REGS" },
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{ 0 }
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};
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static DECLFR(Mapper221_ReadOB)
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{
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return X.DB;
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}
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static void sync(void) {
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uint8 prg =reg[0] >>(submapper ==1? 2: 3) &0x40 | reg[0] >>2 &0x38 | reg[1] &0x07;
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SetReadHandler(0x8000, 0xFFFF, prg <<14 >=PRGsize[0]? Mapper221_ReadOB: CartBR); /* Selecting unpopulated banks results in open bus */
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if (reg[0] &(submapper ==1? 0x200: 0x100)) { /* UNROM */
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setprg16(0x8000, prg);
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setprg16(0xC000, prg |7);
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} else
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if (reg[0] &0x0002) /* NROM-256 */
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setprg32(0x8000, prg >>1);
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else { /* NROM-128 */
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setprg16(0x8000, prg);
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setprg16(0xC000, prg);
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}
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setchr8(0);
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SetupCartCHRMapping(0, CHRptr[0], 0x2000, submapper ==1? !(reg[0] &0x0400): !(reg[1] &0x0008));
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setmirror(reg[0] &0x0001? MI_H: MI_V);
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}
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static DECLFW(Mapper221Write) {
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reg[A >>14 &1] =A;
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sync();
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}
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static void UNLN625092Power(void) {
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reg[0] =reg[1] =0;
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sync();
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SetWriteHandler(0x8000, 0xFFFF, Mapper221Write);
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}
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static void UNLN625092Reset(void) {
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reg[0] =reg[1] =0;
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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 UNLN625092_Init(CartInfo *info) {
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submapper =info->submapper;
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info->Reset = UNLN625092Reset;
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info->Power = UNLN625092Power;
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GameStateRestore = StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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