| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 2007 CaH4e3\r |
| 5 | * Copyright (C) 2011 FCEUX team\r |
| 6 | *\r |
| 7 | * This program is free software; you can redistribute it and/or modify\r |
| 8 | * it under the terms of the GNU General Public License as published by\r |
| 9 | * the Free Software Foundation; either version 2 of the License, or\r |
| 10 | * (at your option) any later version.\r |
| 11 | *\r |
| 12 | * This program is distributed in the hope that it will be useful,\r |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
| 15 | * GNU General Public License for more details.\r |
| 16 | *\r |
| 17 | * You should have received a copy of the GNU General Public License\r |
| 18 | * along with this program; if not, write to the Free Software\r |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r |
| 20 | *\r |
| 21 | * Bandai mappers\r |
| 22 | *\r |
| 23 | */\r |
| 24 | \r |
| 25 | //Famicom Jump 2 should get transformed to m153\r |
| 26 | //All other games are not supporting EEPROM saving right now. \r |
| 27 | //We may need to distinguish between 16 and 159 in order to know the EEPROM configuration.\r |
| 28 | //Until then, we just return 0x00 from the EEPROM read\r |
| 29 | \r |
| 30 | #include "mapinc.h"\r |
| 31 | \r |
| 32 | static uint8 reg[16], is153;\r |
| 33 | static uint8 IRQa;\r |
| 34 | static int16 IRQCount, IRQLatch;\r |
| 35 | \r |
| 36 | static uint8 *WRAM=NULL;\r |
| 37 | static uint32 WRAMSIZE;\r |
| 38 | \r |
| 39 | static SFORMAT StateRegs[]=\r |
| 40 | {\r |
| 41 | {reg, 16, "REGS"},\r |
| 42 | {&IRQa, 1, "IRQA"},\r |
| 43 | {&IRQCount, 2, "IRQC"},\r |
| 44 | {&IRQLatch, 2, "IRQL"}, // need for Famicom Jump II - Saikyou no 7 Nin (J) [!]\r |
| 45 | {0}\r |
| 46 | };\r |
| 47 | \r |
| 48 | static void BandaiIRQHook(int a)\r |
| 49 | {\r |
| 50 | if(IRQa)\r |
| 51 | {\r |
| 52 | IRQCount -= a;\r |
| 53 | if(IRQCount<0)\r |
| 54 | {\r |
| 55 | X6502_IRQBegin(FCEU_IQEXT);\r |
| 56 | IRQa = 0;\r |
| 57 | IRQCount = -1;\r |
| 58 | }\r |
| 59 | }\r |
| 60 | }\r |
| 61 | \r |
| 62 | static void BandaiSync(void)\r |
| 63 | {\r |
| 64 | if(is153)\r |
| 65 | {\r |
| 66 | int base=(reg[0]&1)<<4;\r |
| 67 | setchr8(0);\r |
| 68 | setprg16(0x8000,(reg[8]&0x0F)|base);\r |
| 69 | setprg16(0xC000,0x0F|base);\r |
| 70 | }\r |
| 71 | else\r |
| 72 | {\r |
| 73 | int i;\r |
| 74 | for(i=0; i<8; i++) setchr1(i<<10,reg[i]);\r |
| 75 | setprg16(0x8000,reg[8]);\r |
| 76 | setprg16(0xC000,~0);\r |
| 77 | }\r |
| 78 | switch(reg[9]&3)\r |
| 79 | {\r |
| 80 | case 0: setmirror(MI_V); break;\r |
| 81 | case 1: setmirror(MI_H); break;\r |
| 82 | case 2: setmirror(MI_0); break;\r |
| 83 | case 3: setmirror(MI_1); break;\r |
| 84 | }\r |
| 85 | }\r |
| 86 | \r |
| 87 | static DECLFW(BandaiWrite)\r |
| 88 | {\r |
| 89 | A&=0x0F;\r |
| 90 | if(A<0x0A)\r |
| 91 | {\r |
| 92 | reg[A&0x0F]=V;\r |
| 93 | BandaiSync();\r |
| 94 | }\r |
| 95 | else\r |
| 96 | switch(A)\r |
| 97 | {\r |
| 98 | case 0x0A: X6502_IRQEnd(FCEU_IQEXT); IRQa=V&1; IRQCount=IRQLatch; break;\r |
| 99 | case 0x0B: IRQLatch&=0xFF00; IRQLatch|=V; break;\r |
| 100 | case 0x0C: IRQLatch&=0xFF; IRQLatch|=V<<8; break;\r |
| 101 | case 0x0D: break;// Serial EEPROM control port\r |
| 102 | }\r |
| 103 | }\r |
| 104 | \r |
| 105 | DECLFR(BandaiRead) |
| 106 | { |
| 107 | return 0; |
| 108 | }\r |
| 109 | \r |
| 110 | static void BandaiPower(void)\r |
| 111 | {\r |
| 112 | BandaiSync();\r |
| 113 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
| 114 | SetWriteHandler(0x6000,0xFFFF,BandaiWrite);\r |
| 115 | SetReadHandler(0x6000,0x7FFF,BandaiRead);\r |
| 116 | }\r |
| 117 | \r |
| 118 | static void M153Power(void)\r |
| 119 | {\r |
| 120 | BandaiSync();\r |
| 121 | setprg8r(0x10,0x6000,0);\r |
| 122 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
| 123 | SetWriteHandler(0x6000,0x7FFF,CartBW);\r |
| 124 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
| 125 | SetWriteHandler(0x8000,0xFFFF,BandaiWrite);\r |
| 126 | }\r |
| 127 | \r |
| 128 | \r |
| 129 | static void M153Close(void)\r |
| 130 | {\r |
| 131 | if(WRAM)\r |
| 132 | FCEU_gfree(WRAM);\r |
| 133 | WRAM=NULL;\r |
| 134 | }\r |
| 135 | \r |
| 136 | static void StateRestore(int version)\r |
| 137 | {\r |
| 138 | BandaiSync();\r |
| 139 | }\r |
| 140 | \r |
| 141 | void Mapper16_Init(CartInfo *info)\r |
| 142 | {\r |
| 143 | is153=0;\r |
| 144 | info->Power=BandaiPower;\r |
| 145 | MapIRQHook=BandaiIRQHook;\r |
| 146 | GameStateRestore=StateRestore;\r |
| 147 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 148 | }\r |
| 149 | \r |
| 150 | void Mapper159_Init(CartInfo *info)\r |
| 151 | {\r |
| 152 | Mapper16_Init(info);\r |
| 153 | }\r |
| 154 | \r |
| 155 | \r |
| 156 | void Mapper153_Init(CartInfo *info)\r |
| 157 | {\r |
| 158 | is153=1;\r |
| 159 | info->Power=M153Power;\r |
| 160 | info->Close=M153Close;\r |
| 161 | MapIRQHook=BandaiIRQHook;\r |
| 162 | \r |
| 163 | WRAMSIZE=8192;\r |
| 164 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
| 165 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
| 166 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
| 167 | \r |
| 168 | if(info->battery)\r |
| 169 | {\r |
| 170 | info->SaveGame[0]=WRAM;\r |
| 171 | info->SaveGameLen[0]=WRAMSIZE;\r |
| 172 | }\r |
| 173 | \r |
| 174 | GameStateRestore=StateRestore;\r |
| 175 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 176 | }\r |