Re: Simh terminal lines and networking with VMS
From: Alan Greig (greigaln_at_netscape.net)
Date: 08/18/05
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Date: Thu, 18 Aug 2005 21:54:55 GMT
[posted and emailed]
John Dundas wrote:
> Alan,
>
>
> I am the author of the VH driver. The DHQ is a complex device and I no
> doubt still have bugs in the simulation. I just received my first bug
> report this week; I am still evaluating the impact of the bug.
Congratulations to you and everyone else behind bits of simh. Haven't
managed to make it crash yet...
> That said, make certain when you set the characteristics of the VH
> controllers in SIMH so that the simulator will hang up correctly. To do
> this, issue the commands:
>
> sim> SET VHn MODEM
> sim> SET VHn HANGUP
>
> I can't find my VMS notes at the moment but you might have to set
> something more than /PERM/MODEM/HANG in VMS. Not sure on this.
Just /perm/modem should be enough for VMS to detect a droppped
connection. With the DZ driver it does exactly what I expect. Adding
/hangup allows VMS to drop the connection on normal logout and that bit
works fine with the vh controller. I have issued set vh0 modem and hangup.
With the dz controller both hangup and modem (-am) work but I am seeing
other oddities. For example with all modem control off I can't log
straight back in again without dropping the telnet connection. I can as
expected with vh. I'm also seeing occasional errors while sitting at the
DCL prompt with dz which I don't see with vh (input timeout expired).
RSTS
> required the correct incantation to work reliably. However it should be
> achievable as I did it but that was ~18 months ago.
I'll double check I haven't done something daft.
> John
-- Alan Greig
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