[Simh] simh on RaspBerry Pi

[Zane Healy]

> On Feb 15, 2016, at 7:13 AM, Wilm Boerhout <wboerhout at gmail.com> wrote:
> 
> Zane Healy schreef op 15-2-2016 om 16:08:
>>> On Feb 15, 2016, at 12:47 AM, Wilm Boerhout <wboerhout at gmail.com> <mailto:wboerhout at gmail.com> wrote:
>>> 
>>> Please check out my post on running a VAXcluster on Raspberry Pi's
>>> 
>>> https://www.linkedin.com/pulse/vaxcluster-raspberry-pi-wilm-boerhout <https://www.linkedin.com/pulse/vaxcluster-raspberry-pi-wilm-boerhout>
>>> 
>>> /Wilm
>> There are a couple things that I find interesting about this, and I find myself wondering, what real VAXen does the level of performance you’re getting with the various RPi models, compare to?
> The simh VAX gets about 4 VUPs on the 1GHz Raspberry Pi 2 and the Pi Zero, and about 3 VUPs on the older original Raspberry Pi which runs at about 600MHz.
> 
> But is is 5V, 1A compared to the original VAX-11/780 at 240V 3-phase, 32A. Let alone the physical dimensions...
> 
> /Wilm

It looks like a good replacement for my VAXstation 3100, but not such a great one for the VAXstation 4000/60.  OTOH, the reduced power, size, and noise make this an attractive idea.  I’ve been meaning to try the original for emulating a PDP-10 and PDP-11 for a couple years, just never have the spare time. 

Any issues with LAT?  With something like this, I’d just as soon use my DECserver 90 TL and a VT420. :-)  I’ve never actually gotten VAX/VMS fully running on SIMH.  I think I tried it out as far as starting an install on my Mac a few years ago.

Zane



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