release r2, update credits
[fceu.git] / boards / ax5705.c
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CommitLineData
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 * Super Bros. Pocker Mali (VRC4 mapper)\r
21 */\r
22\r
23#include "mapinc.h"\r
24\r
25static uint8 IRQCount;//, IRQPre;\r
26static uint8 IRQa;\r
27static uint8 prg_reg[2];\r
28static uint8 chr_reg[8];\r
29static uint8 mirr;\r
30\r
31static SFORMAT StateRegs[]=\r
32{\r
33 {&IRQCount, 1, "IRQC"},\r
34 {&IRQa, 1, "IRQA"},\r
35 {prg_reg, 2, "PRG"},\r
36 {chr_reg, 8, "CHR"},\r
37 {&mirr, 1, "MIRR"},\r
38 {0}\r
39};\r
40\r
41/*\r
42static void UNLAX5705IRQ(void)\r
43{\r
44 if(IRQa)\r
45 {\r
46 IRQCount++;\r
47 if(IRQCount>=238)\r
48 {\r
49 X6502_IRQBegin(FCEU_IQEXT);\r
50// IRQa=0;\r
51 }\r
52 }\r
53}*/\r
54\r
55static void Sync(void)\r
56{\r
57 setprg8(0x8000,prg_reg[0]);\r
58 setprg8(0xA000,prg_reg[1]);\r
59 setprg8(0xC000,~1);\r
60 setprg8(0xE000,~0);\r
61 int i;\r
62 for(i=0; i<8; i++)\r
63 setchr1(i<<10,chr_reg[i]); \r
64 setmirror(mirr^1); \r
65}\r
66\r
67static DECLFW(UNLAX5705Write)\r
68{\r
69// if((A>=0xA008)&&(A<=0xE003))\r
70// {\r
71// int ind=(((A>>11)-6)|(A&1))&7;\r
72// int sar=((A&2)<<1);\r
73// chr_reg[ind]=(chr_reg[ind]&(0xF0>>sar))|((V&0x0F)<<sar);\r
74// SyncChr();\r
75// }\r
76// else \r
77 switch(A&0xF00F)\r
78 {\r
79 case 0x8000: prg_reg[0]=((V&2)<<2)|((V&8)>>2)|(V&5); break; // EPROM dump have mixed PRG and CHR banks, data lines to mapper seems to be mixed\r
80 case 0x8008: mirr=V&1; break;\r
81 case 0xA000: prg_reg[1]=((V&2)<<2)|((V&8)>>2)|(V&5); break;\r
82 case 0xA008: chr_reg[0]=(chr_reg[0]&0xF0)|(V&0x0F); break;\r
83 case 0xA009: chr_reg[0]=(chr_reg[0]&0x0F)|((((V&4)>>1)|((V&2)<<1)|(V&0x09))<<4); break;\r
84 case 0xA00A: chr_reg[1]=(chr_reg[1]&0xF0)|(V&0x0F); break;\r
85 case 0xA00B: chr_reg[1]=(chr_reg[1]&0x0F)|((((V&4)>>1)|((V&2)<<1)|(V&0x09))<<4); break;\r
86 case 0xC000: chr_reg[2]=(chr_reg[2]&0xF0)|(V&0x0F); break;\r
87 case 0xC001: chr_reg[2]=(chr_reg[2]&0x0F)|((((V&4)>>1)|((V&2)<<1)|(V&0x09))<<4); break;\r
88 case 0xC002: chr_reg[3]=(chr_reg[3]&0xF0)|(V&0x0F); break;\r
89 case 0xC003: chr_reg[3]=(chr_reg[3]&0x0F)|((((V&4)>>1)|((V&2)<<1)|(V&0x09))<<4); break;\r
90 case 0xC008: chr_reg[4]=(chr_reg[4]&0xF0)|(V&0x0F); break;\r
91 case 0xC009: chr_reg[4]=(chr_reg[4]&0x0F)|((((V&4)>>1)|((V&2)<<1)|(V&0x09))<<4); break;\r
92 case 0xC00A: chr_reg[5]=(chr_reg[5]&0xF0)|(V&0x0F); break;\r
93 case 0xC00B: chr_reg[5]=(chr_reg[5]&0x0F)|((((V&4)>>1)|((V&2)<<1)|(V&0x09))<<4); break;\r
94 case 0xE000: chr_reg[6]=(chr_reg[6]&0xF0)|(V&0x0F); break;\r
95 case 0xE001: chr_reg[6]=(chr_reg[6]&0x0F)|((((V&4)>>1)|((V&2)<<1)|(V&0x09))<<4); break;\r
96 case 0xE002: chr_reg[7]=(chr_reg[7]&0xF0)|(V&0x0F); break;\r
97 case 0xE003: chr_reg[7]=(chr_reg[7]&0x0F)|((((V&4)>>1)|((V&2)<<1)|(V&0x09))<<4); break;\r
98// case 0x800A: X6502_IRQEnd(FCEU_IQEXT); IRQa=0; break;\r
99// case 0xE00B: X6502_IRQEnd(FCEU_IQEXT); IRQa=IRQCount=V; /*if(scanline<240) IRQCount-=8; else IRQCount+=4;*/ break;\r
100 }\r
101 Sync();\r
102}\r
103\r
104static void UNLAX5705Power(void)\r
105{\r
106 Sync();\r
107 SetReadHandler(0x8000,0xFFFF,CartBR);\r
108 SetWriteHandler(0x8000,0xFFFF,UNLAX5705Write);\r
109}\r
110\r
111static void StateRestore(int version)\r
112{\r
113 Sync();\r
114}\r
115\r
116void UNLAX5705_Init(CartInfo *info)\r
117{\r
118 info->Power=UNLAX5705Power;\r
119// GameHBIRQHook=UNLAX5705IRQ;\r
120 GameStateRestore=StateRestore;\r
121 AddExState(&StateRegs, ~0, 0, 0);\r
122}\r