VAXstation 100 firmware notes: Difference between revisions
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Start documenting D0 flags. |
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==Error LEDs== | ==Error LEDs== | ||
[[Image:Vs100-diagnostic-led-errors.png]] | [[Image:Vs100-diagnostic-led-errors.png]] | ||
==D0 flags== | |||
The firmware maintains a set of flags in register D0. | |||
{| class="wikitable | |||
|- | |||
| Bit (decimal) | |||
| Meaning | |||
|- | |||
| 16 | |||
| Maintenance mode | |||
|- | |||
| 25 | |||
| Vertical retrace interrupt | |||
|} | |||
Revision as of 11:55, 10 February 2023
Random notes from running the firmware in an emulator.
Memory map
Error LEDs
D0 flags
The firmware maintains a set of flags in register D0.
| Bit (decimal) | Meaning |
| 16 | Maintenance mode |
| 25 | Vertical retrace interrupt |
