| 52 | |
| 53 | |
| 54 | static void Sync() |
| 55 | { |
| 56 | int prglo = 0; |
| 57 | int prghi = 0; |
| 58 | |
| 59 | int outb = outer << 1; |
| 60 | //this can probably be rolled up, but i have no motivation to do so |
| 61 | //until it's been tested |
| 62 | switch (mode & 0x3c) |
| 63 | { |
| 64 | //32K modes |
| 65 | case 0x00: |
| 66 | case 0x04: |
| 67 | prglo = outb; |
| 68 | prghi = outb | 1; |
| 69 | break; |
| 70 | case 0x10: |
| 71 | case 0x14: |
| 72 | prglo = outb & ~2 | prg << 1 & 2; |
| 73 | prghi = outb & ~2 | prg << 1 & 2 | 1; |
| 74 | break; |
| 75 | case 0x20: |
| 76 | case 0x24: |
| 77 | prglo = outb & ~6 | prg << 1 & 6; |
| 78 | prghi = outb & ~6 | prg << 1 & 6 | 1; |
| 79 | break; |
| 80 | case 0x30: |
| 81 | case 0x34: |
| 82 | prglo = outb & ~14 | prg << 1 & 14; |
| 83 | prghi = outb & ~14 | prg << 1 & 14 | 1; |
| 84 | break; |
| 85 | //bottom fixed modes |
| 86 | case 0x08: |
| 87 | prglo = outb; |
| 88 | prghi = outb | prg & 1; |
| 89 | break; |
| 90 | case 0x18: |
| 91 | prglo = outb; |
| 92 | prghi = outb & ~2 | prg & 3; |
| 93 | break; |
| 94 | case 0x28: |
| 95 | prglo = outb; |
| 96 | prghi = outb & ~6 | prg & 7; |
| 97 | break; |
| 98 | case 0x38: |
| 99 | prglo = outb; |
| 100 | prghi = outb & ~14 | prg & 15; |
| 101 | break; |
| 102 | //top fixed modes |
| 103 | case 0x0c: |
| 104 | prglo = outb | prg & 1; |
| 105 | prghi = outb | 1; |
| 106 | break; |
| 107 | case 0x1c: |
| 108 | prglo = outb & ~2 | prg & 3; |
| 109 | prghi = outb | 1; |
| 110 | break; |
| 111 | case 0x2c: |
no test coverage detected