Video Timing Register
From SpecNext Wiki
| Next Register Number | $11 |
|---|---|
| Readable | No |
| Writable | Yes |
| Short Description | Sets video output timing variant. |
| Bit | Function |
|---|---|
| 7-3 | Reserved, must be 0 |
| 2-0 | video signal timing variant |
Possible timing variants:
| Bit pattern | selected variant |
|---|---|
| %000 | Base VGA timing (50/60Hz depending on bit 2 of NextReg:$05) |
| %001 | VGA setting 1 |
| %010 | VGA setting 2 |
| %011 | VGA setting 3 |
| %100 | VGA setting 4 |
| %101 | VGA setting 5 |
| %110 | VGA setting 6 |
| %111 | HDMI |
Each VGA setting increases the frequency by approximately 1 kHz.