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1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
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4 | * Copyright (C) 2005 CaH4e3 |
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5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | */ |
20 | |
21 | #include "mapinc.h" |
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22 | #include "mmc3.h" |
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23 | |
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24 | static void M189PW(uint32 A, uint8 V) |
25 | { |
26 | setprg32(0x8000,EXPREGS[0]&3); |
27 | } |
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28 | |
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29 | static DECLFW(M189Write) |
30 | { |
31 | EXPREGS[0]=V|(V>>4); //actually, there is a two versions of 189 mapper with hi or lo bits bankswitching. |
32 | FixMMC3PRG(MMC3_cmd); |
33 | } |
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34 | |
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35 | static void M189Power(void) |
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36 | { |
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37 | EXPREGS[0]=EXPREGS[1]=0; |
38 | GenMMC3Power(); |
39 | SetWriteHandler(0x4120,0x7FFF,M189Write); |
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40 | } |
41 | |
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42 | void Mapper189_Init(CartInfo *info) |
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43 | { |
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44 | GenMMC3_Init(info, 256, 256, 0, 0); |
45 | pwrap=M189PW; |
46 | info->Power=M189Power; |
47 | AddExState(EXPREGS, 2, 0, "EXPR"); |
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48 | } |