| 1 | #include "mapinc.h"\r |
| 2 | \r |
| 3 | static uint8 mode;\r |
| 4 | static uint8 DRegs[4];\r |
| 5 | \r |
| 6 | static SFORMAT StateRegs[]=\r |
| 7 | {\r |
| 8 | {DRegs, 4, "DREG"},\r |
| 9 | {0}\r |
| 10 | };\r |
| 11 | \r |
| 12 | static void Sync(void)\r |
| 13 | {\r |
| 14 | int base, bank;\r |
| 15 | base = ((DRegs[0]^DRegs[1])&0x10)<<1;\r |
| 16 | bank = (DRegs[2]^DRegs[3])&0x1f;\r |
| 17 | \r |
| 18 | if(DRegs[1]&0x08)\r |
| 19 | {\r |
| 20 | bank &= 0xfe;\r |
| 21 | if(mode==0)\r |
| 22 | {\r |
| 23 | setprg16(0x8000,base+bank+1);\r |
| 24 | setprg16(0xC000,base+bank+0);\r |
| 25 | }\r |
| 26 | else\r |
| 27 | {\r |
| 28 | setprg16(0x8000,base+bank+0);\r |
| 29 | setprg16(0xC000,base+bank+1);\r |
| 30 | }\r |
| 31 | }\r |
| 32 | else\r |
| 33 | {\r |
| 34 | if(DRegs[1]&0x04)\r |
| 35 | {\r |
| 36 | setprg16(0x8000,0x1f);\r |
| 37 | setprg16(0xC000,base+bank);\r |
| 38 | }\r |
| 39 | else\r |
| 40 | {\r |
| 41 | setprg16(0x8000,base+bank);\r |
| 42 | if(mode==0)\r |
| 43 | setprg16(0xC000,0x20);\r |
| 44 | else\r |
| 45 | setprg16(0xC000,0x07);\r |
| 46 | }\r |
| 47 | }\r |
| 48 | }\r |
| 49 | \r |
| 50 | static DECLFW(Mapper167_write)\r |
| 51 | {\r |
| 52 | DRegs[(A>>13)&0x03]=V;\r |
| 53 | Sync();\r |
| 54 | }\r |
| 55 | \r |
| 56 | static void StateRestore(int version)\r |
| 57 | {\r |
| 58 | Sync();\r |
| 59 | }\r |
| 60 | \r |
| 61 | void Mapper166_init(void)\r |
| 62 | {\r |
| 63 | mode=1;\r |
| 64 | DRegs[0]=DRegs[1]=DRegs[2]=DRegs[3]=0;\r |
| 65 | Sync();\r |
| 66 | SetWriteHandler(0x8000,0xFFFF,Mapper167_write);\r |
| 67 | GameStateRestore=StateRestore;\r |
| 68 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 69 | }\r |
| 70 | \r |
| 71 | void Mapper167_init(void)\r |
| 72 | {\r |
| 73 | mode=0;\r |
| 74 | DRegs[0]=DRegs[1]=DRegs[2]=DRegs[3]=0;\r |
| 75 | Sync();\r |
| 76 | SetWriteHandler(0x8000,0xFFFF,Mapper167_write);\r |
| 77 | GameStateRestore=StateRestore;\r |
| 78 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 79 | }\r |