Another PDP-11 available: Wisconsin - test-drb@ccmp.vtda.org

11 Oct 2000

...
 it would work - in hindsight, I don't know why
since I never
had any intention of getting by with just RT11FB in RT-11.
Actually, I have both versions - dual and quad. 

Same here with matching memory and IO.  I can do everything 
11/03 to first 11/73 and most version inbetween and a fair number 
of backkplanes for them including the heath H11.

I happen to like RT11FB alot.

...
 I do, just my own opinion - which I believe I stated at
the beginning.
The key point is that when testing software, the emulator is so
much faster that it runs rings around the real hardware.  PLUS - 

It can but...  Try doing a hardware hack using a DRV11 card with
a static ram hooked to it as a ram disk.  You can emulate up to 
a point and then it stops.

...
 and this is a VERY  BIG  PLUS - I had occasion to
attempt
to debug (or at least understand) the boot code for a stand alone
program.  Try stepping through the boot block of an RX02 on
a real PDP-11.  With the emulator and even rudimentary 
I've done it,  ODT.  Emulators help some here, then again if the 
boot block is on a real RX02 (in DD mode) or an RL02.  Your 
cooked again and must have real hardware.

...
 In fact, I very much admire someone who can rescue an
11/44
from the scrap heap.  But I do not know how and I am too busy
in any case.  And my back is no longer strong enough. 

Me too.  I stick to the Qbus as they are quiet, small and low 
power. 

However to make a point... there is nothing like seeing and hearing
Unix V7 booting on a real RL02.  It's satisfying as I've preserved 
hardware and demonstrated software that was "of the time" and still
useful.

Allison