| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Ben Parnell |
| 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" |
| 22 | |
| 23 | #define CHRRAM (GameMemBlock) |
| 24 | static uint8 latche; |
| 25 | |
| 26 | DECLFW(CPROMWrite) |
| 27 | { |
| 28 | latche=V&3; |
| 29 | setvram4(0x1000,CHRRAM+((V&3)<<12)); |
| 30 | } |
| 31 | |
| 32 | static void CPROMReset(void) |
| 33 | { |
| 34 | setprg32(0x8000,0); |
| 35 | setvram8(0); |
| 36 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 37 | SetWriteHandler(0x8000,0xffff,CPROMWrite); |
| 38 | } |
| 39 | |
| 40 | static void CPROMRestore(int version) |
| 41 | { |
| 42 | setvram4(0x1000,CHRRAM+((latche)<<12)); |
| 43 | } |
| 44 | |
| 45 | void CPROM_Init(void) |
| 46 | { |
| 47 | BoardPower=CPROMReset; |
| 48 | GameStateRestore=CPROMRestore; |
| 49 | AddExState(&latche, 1, 0, "LATC"); |
| 50 | } |
| 51 | |
| 52 | DECLFW(CNROMWrite) |
| 53 | { |
| 54 | latche=V&3; |
| 55 | setchr8(V&3); |
| 56 | } |
| 57 | |
| 58 | static void CNROMReset(void) |
| 59 | { |
| 60 | setprg16(0x8000,0); |
| 61 | setprg16(0xC000,1); |
| 62 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 63 | SetWriteHandler(0x8000,0xffff,CNROMWrite); |
| 64 | } |
| 65 | |
| 66 | static void CNROMRestore(int version) |
| 67 | { |
| 68 | setchr8(latche); |
| 69 | } |
| 70 | |
| 71 | void CNROM_Init(void) |
| 72 | { |
| 73 | BoardPower=CNROMReset; |
| 74 | GameStateRestore=CNROMRestore; |
| 75 | AddExState(&latche, 1, 0, "LATC"); |
| 76 | } |
| 77 | |
| 78 | static void NROM128Reset(void) |
| 79 | { |
| 80 | setprg16(0x8000,0); |
| 81 | setprg16(0xC000,0); |
| 82 | setchr8(0); |
| 83 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 84 | } |
| 85 | |
| 86 | static void NROM256Reset(void) |
| 87 | { |
| 88 | setprg16(0x8000,0); |
| 89 | setprg16(0xC000,1); |
| 90 | setchr8(0); |
| 91 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 92 | } |
| 93 | void NROM128_Init(void) |
| 94 | { |
| 95 | BoardPower=NROM128Reset; |
| 96 | } |
| 97 | |
| 98 | void NROM256_Init(void) |
| 99 | { |
| 100 | BoardPower=NROM256Reset; |
| 101 | } |
| 102 | |
| 103 | static DECLFW(MHROMWrite) |
| 104 | { |
| 105 | setprg32(0x8000,V>>4); |
| 106 | setchr8(V); |
| 107 | latche=V; |
| 108 | X6502_Rebase(); |
| 109 | } |
| 110 | |
| 111 | static void MHROMReset(void) |
| 112 | { |
| 113 | setprg32(0x8000,0); |
| 114 | setchr8(0); |
| 115 | latche=0; |
| 116 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 117 | } |
| 118 | |
| 119 | static void MHROMRestore(int version) |
| 120 | { |
| 121 | setprg32(0x8000,latche); |
| 122 | setchr8(latche); |
| 123 | SetWriteHandler(0x8000,0xffff,MHROMWrite); |
| 124 | } |
| 125 | |
| 126 | void MHROM_Init(void) |
| 127 | { |
| 128 | BoardPower=MHROMReset; |
| 129 | AddExState(&latche, 1, 0,"LATC"); |
| 130 | PRGmask32[0]&=1; |
| 131 | CHRmask8[0]&=1; |
| 132 | GameStateRestore=MHROMRestore; |
| 133 | } |
| 134 | |
| 135 | static void UNROMRestore(int version) |
| 136 | { |
| 137 | setprg16(0x8000,latche); |
| 138 | } |
| 139 | |
| 140 | static DECLFW(UNROMWrite) |
| 141 | { |
| 142 | setprg16(0x8000,V); |
| 143 | latche=V; |
| 144 | X6502_Rebase(); |
| 145 | } |
| 146 | |
| 147 | static void UNROMReset(void) |
| 148 | { |
| 149 | setprg16(0x8000,0); |
| 150 | setprg16(0xc000,~0); |
| 151 | setvram8(CHRRAM); |
| 152 | SetWriteHandler(0x8000,0xffff,UNROMWrite); |
| 153 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 154 | latche=0; |
| 155 | } |
| 156 | |
| 157 | void UNROM_Init(void) |
| 158 | { |
| 159 | BoardPower=UNROMReset; |
| 160 | PRGmask16[0]&=7; |
| 161 | AddExState(&latche, 1, 0, "LATC"); |
| 162 | AddExState(CHRRAM, 8192, 0, "CHRR"); |
| 163 | GameStateRestore=UNROMRestore; |
| 164 | } |