[Simh] Re: Simh Digest, Vol 14, Issue 11

[bsupnik at comcast.net]

SIMH implements the VAX time of year clock, which tracks wall time.   This clock is set from the real world when VMS boots.  However, thereafter, it only ticks when the simulator is running.  If the simulator is stopped, time stops too.

VMS doesn't have a concept of a hibernating system...

/Bob Supnik


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> Today's Topics:
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>    1. VAX RTC implemented ? (A.Bucher at alcatel.de)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Mon, 17 Jan 2005 11:29:03 +0100
> From: A.Bucher at alcatel.de
> Subject: [Simh] VAX RTC implemented ?
> To: simh at trailing-edge.com
> Message-ID: <OFEFBC190D.901C5C63-ONC1256F8C.0038E625 at netfr.alcatel.fr>
> Content-Type: text/plain; charset=us-ascii
> 
> Hi,
> 
> as far as I know, there is a battery buffered RTC in the VAXes, which keeps
> running even if the VAX is powered off.
> 
> Is this RTC somehow implemented in SIMH ?
> 
> Why I ask:
> Using SIMH on a Laptop, I tried to hibernate it - works without problems
> (ok, except for telnet connections and some network related things) - but:
> the time within the emulator stays as it was before the laptop was sent to
> sleep.  Besides, very convenient to have a "VAX to go" in the pocket :-)
> 
> Okay, you may say that there may be some NTP or similar client for VMS, but
> what's for older or non-networked OSes ?
> 
> Therefore, is it possible to have the simulated RTC updated from the hosts
> clock ?! Or did I just miss something ?
> 
> Thanks you for the assistance !
> 
> Andreas
> 
> 
> 
> 
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> End of Simh Digest, Vol 14, Issue 11
> ************************************