Commit graph

6 commits

Author SHA1 Message Date
Lars Brinkhoff
222c9d91b4 IMLAC: Improve debug output. 2020-11-04 14:41:19 +01:00
Lars Brinkhoff
da76d6eca1 IMLAC: Also load block register when loading DPC.
Not doing this will make jumps fail when the display processor is
started from an adress larger than 7777.
2020-06-26 16:57:32 +02:00
Lars Brinkhoff
ee3bd8f39c IMLAC: Fix two minor bugs.
- Display PC masked to be inside core memory.
- Do not sign extend characters read from TTY.
2020-06-19 21:57:12 +02:00
Lars Brinkhoff
1d3d20e999 IMLAC: Fix bug in long vector instruction.
X and Y were swapped.
2020-06-14 19:55:12 +02:00
Lars Brinkhoff
50266704ca IMLAC: Implement 8-level return stack for display processor.
Needed by Maze.
2020-06-14 18:50:48 +02:00
Lars Brinkhoff
f95ac7ddbd IMLAC: Simulator for Imlac PDS-1. 2020-06-12 16:05:50 +02:00