| 1 | #include "mapinc.h" |
| 2 | |
| 3 | DECLFW(Mapper182_write) |
| 4 | { |
| 5 | switch(A&0xf003) |
| 6 | { |
| 7 | case 0xe003:IRQCount=V;IRQa=1;break; |
| 8 | case 0x8001:MIRROR_SET(V&1);break; |
| 9 | case 0xA000:mapbyte1[0]=V;break; |
| 10 | case 0xC000: |
| 11 | switch(mapbyte1[0]&7) |
| 12 | { |
| 13 | case 0:VROM_BANK2(0x0000,V>>1);break; |
| 14 | case 1:VROM_BANK1(0x1400,V);break; |
| 15 | case 2:VROM_BANK2(0x0800,V>>1);break; |
| 16 | case 3:VROM_BANK1(0x1c00,V);break; |
| 17 | case 4:ROM_BANK8(0x8000,V); |
| 18 | X6502_Rebase();break; |
| 19 | case 5:ROM_BANK8(0xA000,V); |
| 20 | X6502_Rebase();break; |
| 21 | case 6:VROM_BANK1(0x1000,V);break; |
| 22 | case 7:VROM_BANK1(0x1800,V);break; |
| 23 | } |
| 24 | break; |
| 25 | |
| 26 | |
| 27 | } |
| 28 | } |
| 29 | |
| 30 | void blop(void) |
| 31 | { |
| 32 | if(IRQa) |
| 33 | { |
| 34 | if(IRQCount) |
| 35 | { |
| 36 | IRQCount--; |
| 37 | if(!IRQCount) |
| 38 | { |
| 39 | IRQa=0; |
| 40 | TriggerIRQ(); |
| 41 | } |
| 42 | } |
| 43 | } |
| 44 | } |
| 45 | void Mapper182_init(void) |
| 46 | { |
| 47 | SetWriteHandler(0x8000,0xFFFF,Mapper182_write); |
| 48 | GameHBIRQHook=blop; |
| 49 | } |
| 50 | |