386f5371 |
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r |
19 | */\r |
20 | \r |
21 | #include "mapinc.h"\r |
22 | \r |
23 | static uint8 reg[8], cmd, IRQa;\r |
24 | static int32 IRQCount;\r |
25 | \r |
26 | static SFORMAT StateRegs[]=\r |
27 | {\r |
28 | {&cmd, 1, "CMD"},\r |
29 | {reg, 8, "REGS"},\r |
30 | {&IRQa, 1, "IRQA"},\r |
31 | {&IRQCount, 4, "IRQC"},\r |
32 | {0}\r |
33 | };\r |
34 | \r |
35 | static void Sync(void)\r |
36 | {\r |
37 | setprg8(0x6000,reg[4]);\r |
38 | setprg8(0x8000,reg[1]);\r |
39 | setprg8(0xA000,reg[2]);\r |
40 | setprg8(0xC000,reg[3]);\r |
41 | setprg8(0xE000,~0);\r |
42 | setchr8(0);\r |
43 | }\r |
44 | \r |
45 | static DECLFW(UNLKS7032Write)\r |
46 | {\r |
47 | // FCEU_printf("bs %04x %02x\n",A,V);\r |
48 | switch(A)\r |
49 | {\r |
50 | // case 0x8FFF: reg[4]=V; Sync(); break;\r |
51 | case 0x8000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x000F)|(V&0x0F); break;\r |
52 | case 0x9000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x00F0)|((V&0x0F)<<4); break;\r |
53 | case 0xA000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x0F00)|((V&0x0F)<<8); break;\r |
54 | case 0xB000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0xF000)|(V<<12); break;\r |
55 | case 0xC000: X6502_IRQEnd(FCEU_IQEXT); IRQa=1; break;\r |
56 | case 0xE000: cmd=V&7; break;\r |
57 | case 0xF000: reg[cmd]=V; Sync(); break;\r |
58 | }\r |
59 | }\r |
60 | \r |
61 | static void UNLSMB2JIRQHook(int a)\r |
62 | {\r |
63 | if(IRQa)\r |
64 | {\r |
65 | IRQCount+=a;\r |
66 | if(IRQCount>=0xFFFF)\r |
67 | {\r |
68 | IRQa=0;\r |
69 | IRQCount=0;\r |
70 | X6502_IRQBegin(FCEU_IQEXT);\r |
71 | }\r |
72 | }\r |
73 | }\r |
74 | \r |
75 | static void UNLKS7032Power(void)\r |
76 | {\r |
77 | Sync();\r |
78 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
79 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
80 | SetWriteHandler(0x4020,0xFFFF,UNLKS7032Write);\r |
81 | }\r |
82 | \r |
83 | static void StateRestore(int version)\r |
84 | {\r |
85 | Sync();\r |
86 | }\r |
87 | \r |
88 | void UNLKS7032_Init(CartInfo *info)\r |
89 | {\r |
90 | info->Power=UNLKS7032Power;\r |
91 | MapIRQHook=UNLSMB2JIRQHook;\r |
92 | GameStateRestore=StateRestore;\r |
93 | AddExState(&StateRegs, ~0, 0, 0);\r |
94 | }\r |