| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 2009 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 | \r |
| 21 | #include "mapinc.h"\r |
| 22 | \r |
| 23 | static uint8 reg[7];\r |
| 24 | static uint8 *WRAM=NULL;\r |
| 25 | static uint32 WRAMSIZE;\r |
| 26 | \r |
| 27 | static SFORMAT StateRegs[]=\r |
| 28 | {\r |
| 29 | {reg, 2, "REG"},\r |
| 30 | {0}\r |
| 31 | };\r |
| 32 | \r |
| 33 | static uint8 bs_tbl[128] = {\r |
| 34 | 0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33,\r |
| 35 | 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67,\r |
| 36 | 0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33,\r |
| 37 | 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67,\r |
| 38 | 0x02, 0x12, 0x22, 0x32, 0x02, 0x12, 0x22, 0x32, 0x02, 0x12, 0x22, 0x32, 0x02, 0x12, 0x22, 0x32,\r |
| 39 | 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67,\r |
| 40 | 0x02, 0x12, 0x22, 0x32, 0x02, 0x12, 0x22, 0x32, 0x02, 0x12, 0x22, 0x32, 0x00, 0x10, 0x20, 0x30,\r |
| 41 | 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67,\r |
| 42 | };\r |
| 43 | \r |
| 44 | static uint8 br_tbl[16] = {\r |
| 45 | 0x00, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, \r |
| 46 | };\r |
| 47 | \r |
| 48 | static void Sync(void)\r |
| 49 | {\r |
| 50 | // setchr4(0x0000,(reg[0]&0x80) >> 7);\r |
| 51 | // setchr4(0x1000,(reg[0]&0x80) >> 7);\r |
| 52 | setchr8(0);\r |
| 53 | setprg8r(0x10,0x6000,0);\r |
| 54 | setprg16(0x8000,bs_tbl[reg[0]&0x7f]>>4);\r |
| 55 | setprg16(0xc000,bs_tbl[reg[0]&0x7f]&0xf);\r |
| 56 | setmirror(MI_V);\r |
| 57 | }\r |
| 58 | \r |
| 59 | static DECLFW(UNLPEC586Write)\r |
| 60 | {\r |
| 61 | reg[(A&0x700)>>8]=V;\r |
| 62 | FCEU_printf("bs %04x %02x\n",A,V);\r |
| 63 | Sync();\r |
| 64 | }\r |
| 65 | \r |
| 66 | static DECLFR(UNLPEC586Read)\r |
| 67 | {\r |
| 68 | FCEU_printf("read %04x\n",A);\r |
| 69 | return (X.DB & 0xD8) | br_tbl[reg[4]>>4];\r |
| 70 | }\r |
| 71 | \r |
| 72 | static void UNLPEC586Power(void)\r |
| 73 | {\r |
| 74 | reg[0]=0x0E;\r |
| 75 | Sync();\r |
| 76 | setchr8(0);\r |
| 77 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
| 78 | SetWriteHandler(0x6000,0x7FFF,CartBW);\r |
| 79 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
| 80 | SetWriteHandler(0x5000,0x5fff,UNLPEC586Write);\r |
| 81 | SetReadHandler(0x5000,0x5fff,UNLPEC586Read);\r |
| 82 | }\r |
| 83 | \r |
| 84 | static void UNLPEC586IRQ(void)\r |
| 85 | {\r |
| 86 | // if(reg[0]&0x80)\r |
| 87 | {\r |
| 88 | if(scanline==128) {\r |
| 89 | setchr4(0x0000,1);\r |
| 90 | setchr4(0x1000,0);\r |
| 91 | }\r |
| 92 | else {\r |
| 93 | setchr4(0x0000,0);\r |
| 94 | setchr4(0x1000,1);\r |
| 95 | }\r |
| 96 | }\r |
| 97 | }\r |
| 98 | \r |
| 99 | static void UNLPEC586Close(void)\r |
| 100 | {\r |
| 101 | if(WRAM)\r |
| 102 | FCEU_gfree(WRAM);\r |
| 103 | WRAM=NULL;\r |
| 104 | }\r |
| 105 | \r |
| 106 | static void StateRestore(int version)\r |
| 107 | {\r |
| 108 | Sync();\r |
| 109 | }\r |
| 110 | \r |
| 111 | void UNLPEC586Init(CartInfo *info)\r |
| 112 | {\r |
| 113 | info->Power=UNLPEC586Power;\r |
| 114 | info->Close=UNLPEC586Close;\r |
| 115 | GameHBIRQHook=UNLPEC586IRQ;\r |
| 116 | GameStateRestore=StateRestore;\r |
| 117 | \r |
| 118 | WRAMSIZE=8192;\r |
| 119 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
| 120 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
| 121 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
| 122 | \r |
| 123 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 124 | }\r |