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1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2002 Ben Parnell |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | */ |
20 | |
21 | #include "mapinc.h" |
22 | |
23 | |
24 | #define dbarray mapbyte1 |
25 | static void FP_FASTAPASS(1) dragonbust_ppu(uint32 A) |
26 | { |
27 | static int last=-1; |
28 | static uint8 z; |
29 | |
30 | if(A>=0x2000) return; |
31 | |
32 | A>>=13; |
33 | |
34 | z=dbarray[A]; |
35 | |
36 | if(z!=last) |
37 | { |
38 | onemir(z); |
39 | last=z; |
40 | } |
41 | } |
42 | |
43 | |
44 | DECLFW(Mapper95_write) |
45 | { |
46 | switch(A&0xF001){ |
47 | |
48 | case 0x8000: |
49 | MMC3_cmd = V; |
50 | break; |
51 | |
52 | case 0x8001: |
53 | switch(MMC3_cmd&7){ |
54 | case 0: dbarray[0]=dbarray[1]=(V&0x20)>>4;onemir((V&0x20)>>4);V>>=1;VROM_BANK2(0x0000,V);break; |
55 | case 1: dbarray[2]=dbarray[3]=(V&0x20)>>4;onemir((V&0x20)>>4);V>>=1;VROM_BANK2(0x0800,V);break; |
56 | case 2: dbarray[4]=(V&0x20)>>4;onemir((V&0x20)>>4);VROM_BANK1(0x1000,V); break; |
57 | case 3: dbarray[5]=(V&0x20)>>4;onemir((V&0x20)>>4);VROM_BANK1(0x1400,V); break; |
58 | case 4: dbarray[6]=(V&0x20)>>4;onemir((V&0x20)>>4);VROM_BANK1(0x1800,V); break; |
59 | case 5: dbarray[7]=(V&0x20)>>4;onemir((V&0x20)>>4);VROM_BANK1(0x1C00,V); break; |
60 | case 6: |
61 | ROM_BANK8(0x8000,V); |
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62 | X6502_Rebase(); |
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63 | break; |
64 | case 7: |
65 | ROM_BANK8(0xA000,V); |
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66 | X6502_Rebase(); |
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67 | break; |
68 | } |
69 | break; |
70 | } |
71 | } |
72 | |
73 | void Mapper95_init(void) |
74 | { |
75 | SetWriteHandler(0x8000,0xffff,Mapper95_write); |
76 | PPU_hook=dragonbust_ppu; |
77 | } |
78 | |