| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 2007 CaH4e3\r |
| 5 | *\r |
| 6 | * This program is free software; you can redistribute it and/or modify\r |
| 7 | * it under the terms of the GNU General Public License as published by\r |
| 8 | * the Free Software Foundation; either version 2 of the License, or\r |
| 9 | * (at your option) any later version.\r |
| 10 | *\r |
| 11 | * This program is distributed in the hope that it will be useful,\r |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
| 14 | * GNU General Public License for more details.\r |
| 15 | *\r |
| 16 | * You should have received a copy of the GNU General Public License\r |
| 17 | * along with this program; if not, write to the Free Software\r |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
| 19 | *\r |
| 20 | * FDS Conversion\r |
| 21 | *\r |
| 22 | */\r |
| 23 | \r |
| 24 | #include "mapinc.h"\r |
| 25 | \r |
| 26 | static uint8 reg, mirr;\r |
| 27 | static int32 IRQa, IRQCount, IRQLatch;\r |
| 28 | static uint8 *WRAM=NULL;\r |
| 29 | static uint32 WRAMSIZE;\r |
| 30 | \r |
| 31 | static SFORMAT StateRegs[]=\r |
| 32 | {\r |
| 33 | {&mirr, 1, "MIRR"},\r |
| 34 | {®, 1, "REGS"},\r |
| 35 | {&IRQa, 4, "IRQA"},\r |
| 36 | {&IRQCount, 4, "IRQC"},\r |
| 37 | {&IRQLatch, 4, "IRQL"},\r |
| 38 | {0}\r |
| 39 | };\r |
| 40 | \r |
| 41 | static void Sync(void)\r |
| 42 | {\r |
| 43 | setprg16(0x8000,reg);\r |
| 44 | setprg16(0xC000,2);\r |
| 45 | setmirror(mirr);\r |
| 46 | }\r |
| 47 | \r |
| 48 | static DECLFW(UNLKS7017Write)\r |
| 49 | {\r |
| 50 | // FCEU_printf("bs %04x %02x\n",A,V);\r |
| 51 | if((A & 0xFF00) == 0x4A00)\r |
| 52 | {\r |
| 53 | reg = ((A >> 2) & 3)|((A >> 4) & 4);\r |
| 54 | }\r |
| 55 | else if ((A & 0xFF00) == 0x5100)\r |
| 56 | {\r |
| 57 | Sync();\r |
| 58 | }\r |
| 59 | else if (A == 0x4020)\r |
| 60 | {\r |
| 61 | X6502_IRQEnd(FCEU_IQEXT);\r |
| 62 | IRQCount&=0xFF00;\r |
| 63 | IRQCount|=V;\r |
| 64 | }\r |
| 65 | else if (A == 0x4021)\r |
| 66 | {\r |
| 67 | X6502_IRQEnd(FCEU_IQEXT);\r |
| 68 | IRQCount&=0xFF;\r |
| 69 | IRQCount|=V<<8;\r |
| 70 | IRQa = 1;\r |
| 71 | }\r |
| 72 | else if (A == 0x4025)\r |
| 73 | {\r |
| 74 | mirr = ((V & 8) >> 3) ^ 1;\r |
| 75 | }\r |
| 76 | }\r |
| 77 | \r |
| 78 | static DECLFR(FDSRead4030)\r |
| 79 | {\r |
| 80 | X6502_IRQEnd(FCEU_IQEXT);\r |
| 81 | return X.IRQlow&FCEU_IQEXT?1:0;\r |
| 82 | }\r |
| 83 | \r |
| 84 | static void FP_FASTAPASS(1) UNL7017IRQ(int a)\r |
| 85 | {\r |
| 86 | if(IRQa)\r |
| 87 | {\r |
| 88 | IRQCount-=a;\r |
| 89 | if(IRQCount<=0)\r |
| 90 | {\r |
| 91 | IRQa=0;\r |
| 92 | X6502_IRQBegin(FCEU_IQEXT);\r |
| 93 | }\r |
| 94 | }\r |
| 95 | }\r |
| 96 | \r |
| 97 | static void UNLKS7017Power(void)\r |
| 98 | {\r |
| 99 | Sync();\r |
| 100 | setchr8(0);\r |
| 101 | setprg8r(0x10,0x6000,0);\r |
| 102 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
| 103 | SetWriteHandler(0x6000,0x7FFF,CartBW);\r |
| 104 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
| 105 | SetReadHandler(0x4030,0x4030,FDSRead4030);\r |
| 106 | SetWriteHandler(0x4020,0x5FFF,UNLKS7017Write);\r |
| 107 | }\r |
| 108 | \r |
| 109 | static void UNLKS7017Close(void)\r |
| 110 | {\r |
| 111 | if(WRAM)\r |
| 112 | FCEU_gfree(WRAM);\r |
| 113 | WRAM=NULL;\r |
| 114 | }\r |
| 115 | \r |
| 116 | static void StateRestore(int version)\r |
| 117 | {\r |
| 118 | Sync();\r |
| 119 | }\r |
| 120 | \r |
| 121 | void UNLKS7017_Init(CartInfo *info)\r |
| 122 | {\r |
| 123 | info->Power=UNLKS7017Power;\r |
| 124 | info->Close=UNLKS7017Close;\r |
| 125 | MapIRQHook=UNL7017IRQ;\r |
| 126 | \r |
| 127 | WRAMSIZE=8192;\r |
| 128 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
| 129 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
| 130 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
| 131 | \r |
| 132 | GameStateRestore=StateRestore;\r |
| 133 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 134 | }\r |