43725da7 |
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 | * City Fighter IV sith Sound VRC4 hacked\r |
21 | */\r |
22 | \r |
23 | #include "mapinc.h"\r |
24 | \r |
25 | static uint8 IRQCount;\r |
26 | static uint8 IRQPre;\r |
27 | static uint8 IRQa;\r |
28 | static uint8 prg_reg, prg_mode, mirr;\r |
29 | static uint8 chr_reg[8];\r |
30 | \r |
31 | static SFORMAT StateRegs[]=\r |
32 | {\r |
33 | {&IRQCount, 1, "IRQC"},\r |
34 | {&IRQPre, 1, "IRQP"},\r |
35 | {&IRQa, 1, "IRQA"},\r |
36 | {&prg_reg, 1, "PREG"},\r |
37 | {&prg_mode, 1, "PMOD"},\r |
38 | {&mirr, 1, "MIRR"},\r |
39 | {chr_reg, 8, "CREG"},\r |
40 | {0}\r |
41 | };\r |
42 | \r |
43 | static void Sync(void)\r |
44 | {\r |
45 | setprg32(0x8000,prg_reg>>2);\r |
46 | if(!prg_mode)\r |
47 | setprg8(0xC000,prg_reg);\r |
48 | int i;\r |
49 | for(i=0; i<8; i++)\r |
50 | setchr1(i<<10,chr_reg[i]); \r |
51 | switch (mirr)\r |
52 | {\r |
53 | case 0: setmirror(MI_V); break;\r |
54 | case 1: setmirror(MI_H); break;\r |
55 | case 2: setmirror(MI_0); break;\r |
56 | case 3: setmirror(MI_1); break;\r |
57 | }\r |
58 | }\r |
59 | \r |
60 | static DECLFW(UNLCITYFIGHTWrite)\r |
61 | {\r |
62 | switch(A&0xF00C)\r |
63 | {\r |
64 | case 0x9000: prg_reg=V&0xC; mirr=V&3; break;\r |
65 | case 0x9004:\r |
66 | case 0x9008:\r |
67 | case 0x900C: prg_reg=V&0xC; break;\r |
68 | case 0xC000:\r |
69 | case 0xC004:\r |
70 | case 0xC008:\r |
71 | case 0xC00C: prg_mode=V&1; break;\r |
72 | case 0xD000: chr_reg[0]=(chr_reg[0]&0xF0)|(V&0x0F); break;\r |
73 | case 0xD004: chr_reg[0]=(chr_reg[0]&0x0F)|(V<<4); break;\r |
74 | case 0xD008: chr_reg[1]=(chr_reg[1]&0xF0)|(V&0x0F); break;\r |
75 | case 0xD00C: chr_reg[1]=(chr_reg[1]&0x0F)|(V<<4); break;\r |
76 | case 0xA000: chr_reg[2]=(chr_reg[2]&0xF0)|(V&0x0F); break;\r |
77 | case 0xA004: chr_reg[2]=(chr_reg[2]&0x0F)|(V<<4); break;\r |
78 | case 0xA008: chr_reg[3]=(chr_reg[3]&0xF0)|(V&0x0F); break;\r |
79 | case 0xA00C: chr_reg[3]=(chr_reg[3]&0x0F)|(V<<4); break;\r |
80 | case 0xB000: chr_reg[4]=(chr_reg[4]&0xF0)|(V&0x0F); break;\r |
81 | case 0xB004: chr_reg[4]=(chr_reg[4]&0x0F)|(V<<4); break;\r |
82 | case 0xB008: chr_reg[5]=(chr_reg[5]&0xF0)|(V&0x0F); break;\r |
83 | case 0xB00C: chr_reg[5]=(chr_reg[5]&0x0F)|(V<<4); break;\r |
84 | case 0xE000: chr_reg[6]=(chr_reg[6]&0xF0)|(V&0x0F); break;\r |
85 | case 0xE004: chr_reg[6]=(chr_reg[6]&0x0F)|(V<<4); break;\r |
86 | case 0xE008: chr_reg[7]=(chr_reg[7]&0xF0)|(V&0x0F); break;\r |
87 | case 0xE00C: chr_reg[7]=(chr_reg[7]&0x0F)|(V<<4); break;\r |
88 | // case 0xF004: IRQCount=((IRQCount&0xF0)|(V&0xF)); break;\r |
89 | // case 0xF000: IRQCount=((IRQCount&0x0F)|((V&0xF)<<4)); break;\r |
90 | case 0xF008: IRQa=V&2; X6502_IRQEnd(FCEU_IQEXT); break;\r |
91 | // case 0xF00C: IRQPre=16; break;\r |
92 | default:\r |
93 | FCEU_printf("bs %04x %02x\n",A,V);\r |
94 | }\r |
95 | Sync();\r |
96 | }\r |
97 | \r |
98 | static DECLFW(UNLCITYFIGHTWriteLo)\r |
99 | {\r |
100 | FCEU_printf("bs %04x %02x\n",A,V);\r |
101 | }\r |
102 | \r |
103 | static void UNLCITYFIGHTIRQ(void)\r |
104 | {\r |
105 | //if(IRQa)\r |
106 | {\r |
107 | // IRQCount--;\r |
108 | // if((IRQCount>>1)==0)\r |
109 | // X6502_IRQBegin(FCEU_IQEXT);\r |
110 | // if(scanline==100) X6502_IRQBegin(FCEU_IQEXT);\r |
111 | }\r |
112 | }\r |
113 | \r |
114 | static void UNLCITYFIGHTPower(void)\r |
115 | {\r |
116 | prg_reg = 0;\r |
117 | Sync();\r |
118 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
119 | SetWriteHandler(0x4020,0x7FFF,UNLCITYFIGHTWriteLo);\r |
120 | SetWriteHandler(0x8000,0xFFFF,UNLCITYFIGHTWrite);\r |
121 | }\r |
122 | \r |
123 | static void StateRestore(int version)\r |
124 | {\r |
125 | Sync();\r |
126 | }\r |
127 | \r |
128 | void UNLCITYFIGHT_Init(CartInfo *info)\r |
129 | {\r |
130 | info->Power=UNLCITYFIGHTPower;\r |
131 | GameHBIRQHook=UNLCITYFIGHTIRQ;\r |
132 | GameStateRestore=StateRestore;\r |
133 | AddExState(&StateRegs, ~0, 0, 0);\r |
134 | }\r |