Another PDP-11 available: Wisconsin

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Wed Oct 11 17:49:04 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
Received on Wed Oct 11 2000 - 17:49:04 BST