It seems to run RSX or RT11 just fine.
When its choice between $2000, $175 or an 11/94 in as new condition not
running at all then none of those minor technical shortcomings are an issue.
Regards
?
Rod Smallwood
?
?
-----Original Message-----
From: cctech-bounces at
classiccmp.org [mailto:cctech-bounces at
classiccmp.org]
On Behalf Of Ethan Dicks
Sent: 16 May 2012 19:29
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: PDP-11/93
On Wed, May 16, 2012 at 1:37 PM, Eric Smith <eric at brouhaha.com> wrote:
Rod Smallwood wrote:
QED993 $175.00
Those are nice, but a lot of us hobbyists are more interested in running
real DEC gear than in replacing a DEC CPU with an aftermarket CPU.
I didn't recognize the QED993, so I googled it. Found this comment on
the v-c forum...
"The QED 993 is a Xlinix FPGA emulation of a PDP-11. It does not
appear to be fully compatible with a J-11 processor. For example, it
does not appear to have any FP11 instruction support, which is assumed
to be present in a J-11. I haven't been able to get RSTS/E 10.1 or
2.11BSD to run on one I have so for me it is not as interesting as I
had hoped."
I would personally consider a PDP-11 implementation that could not run
2BSD to be seriously broken for my uses (yes I know about 2.9BSD vs
2.11BSD and Split I&D, etc - that's just about picking the correct
PDP-11 type). I surely don't need an uber-fast PDP-11 to run RT-11.
I got along fine with an 11/23 system for professional software dev
for years - as long as the compiles take a handful of minutes or less,
it's fast enough.
I don't have anything faster/newer than an 11/53, but for what I do,
it's enough. Mostly, I run RT-11 and a little 2BSD.
-ethan