[Simh] Losing Time In SIMH

[Johnny Billquist]

On 2017-01-31 21:37, Mark Pizzolato wrote:
> On Tuesday, January 31, 2017 at 12:32 PM, Johnny Billquist wrote:
> [...]
>> Hum. I hate moving discussions... :-)
>
> I answered the original report with a suggestion and a request that he open
> an issue if the suggestion didn’t pan out.  It didn't, so he followed up in the
> issue system.

Call me old and grumpy. :-)

>> Anyway, I'm surprised by the interval timer. I had a recollection that it was
>> normally always at 100Hz on VMS. Oh well. I wonder why on earth you would
>> want to have a 60Hz clock here...
>> PDP-11 (and I suspect PDP-10 and other older machines) are a different story,
>> as they usually use the line frequency of the mains AC as the clock source,
>> which means 60Hz in the US.
>
> The original user's problem was observed running 32V, not VMS.  That is why
> I said that most OSes use a 100Hz tick rate.

D'oh! Somewhere I lost track that it was with 32V.

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol