[Simh] late versions of TOPS-20 on SimH [was Re: CDC 6600]

[Rob Jarratt]

Getting KL-10 support in SIMH would be great, but I believe it would be
quite a big job. Still, KLH10 would be a great starting point.

Regards

Rob

> -----Original Message-----
> From: simh-bounces at trailing-edge.com [mailto:simh-bounces at trailing-
> edge.com] On Behalf Of Sergiusz Jarczyk
> Sent: 08 July 2010 14:02
> To: Rich Alderson
> Cc: Simh at trailing-edge.com
> Subject: Re: [Simh] late versions of TOPS-20 on SimH [was Re: CDC 6600]
> 
> Hi Rich
> 
> 2010/7/8 Rich Alderson <simh at alderson.users.panix.com>:
> [...]
> > The SimH PDP-10 emulation is only a KS-10.  Although there was a port
> of
> > TOPS-20 v5.4 to that platform, it was not widely available, and
> support
> > for it dropped more than 25 years ago (as the principal in the
> project
> > informed me when I asked about it several years ago).  TOPS-20 v4.1
> is the
> > last version which DEC supported.
> >
> > It's a jim-dandy Tops-10 platform, on the other hand, running v7.04
> like a
> > champ.
> >
> > If you want to play with TOPS-20 networking, you really do want a KL-
> 10
> > processor or an emulator of same, so KLH10 is the only way to go,
> unless
> > you're intimately familiar with the KL-10 hardware and can recreate
> it in a
> > simulation.
> >
> 
> I'm aware of these limitations. I'm using KLH10 on daily basis for
> some time now, both for TOPS-20 and ITS, and I can confirm it's a
> great piece of code. The only problem for me was the timing issue on
> amd64 system (there is no native x64 build for KLH10), but two changes
> in makefile was enough to get ride of them... :-) I'm not sure if
> KLH10 is still actively developed (I'm using version 2.0h - as in
> Panda distribution with tun/tap patch), and that's why I was wondering
> if it'd have sense to try to merge KLH10 code into SimH (at least the
> KL10 part) , so we can have full PDP-10 support...
> 
> Sergiusz
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