Mark Pizzolato 81e2719d90 TIMER: Cleanup Inconsistencies and Throttling and IDLE activities ...

- Make time at sim> prompt consistent when in nocalibrate mode.
- Disable asynch operations when in nocalibrate mode so that all events
   occur consistently.
- Make sure that all throttling modes produce consistent behavior
  related to all timing activities including clock ticks and TMXR port
  speed timing.
- Expose all timer and throttling state variables via simh REGisters
- Only allow throttling to start execution one time.  Throttling can't
   be changed once instruction execution has started.
- Clarification of SHOW CLOCK variable units
- Avoid competing gratuitous keyboard polls with simulators
- Properly enable catchup ticks
- Fix second boot while idling
- Improve calibration while idling
- Report complete timer state when impossible timer conditions exist
   that will cause a simulator abort.
- Leave memory 0 after pre-calibration instruction execution rate.

2024-04-04 10:09:57 -10:00

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