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mirror of https://github.com/simh/simh.git synced 2026-01-11 23:52:58 +00:00

12 Commits

Author SHA1 Message Date
Lars Brinkhoff
5b07ac973e Imlac: Model MSB and LSB accumulators.
- Improve debug output.
- Add support for Alpha display processor.
   Details figured out by Zachary Harper @sparky-z from reading the
   listing "FREEWAY CROSSING PROGRAM".
2025-08-30 21:02:24 -10:00
Lars Brinkhoff
f9b39fb87f Imlac: Make display rate adjustable. 2025-08-30 21:00:34 -10:00
Lars Brinkhoff
fd60c6b0f7 Imlac: Add support for Alpha display processor. 2025-06-06 03:00:51 -10:00
Lars Brinkhoff
02e63a1f97 Imlac: Improve debug output. 2025-06-06 03:00:51 -10:00
Lars Brinkhoff
8e0b432f1a Imlac: Model X/Y MSB and LSB. 2025-06-06 03:00:51 -10:00
B. Scott Michel
fc03fd432e IMLAC: Type consistency warnings.
- Fix Type consistency warnings.
- CUR_AC -> AC (revert)
2024-12-09 09:54:25 -10:00
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