Re: Decsystem 20/20 (Digital/DEC) bigger than a pdp11
- William Pechter <bpechter@...> wrote:
>I've been out of town and so did not follow this thread until my
> I didn't think Compuserve ran on a KS...
> They're a lot smaller and IIRC they used a bit slice AMD
> processor... kind of like the 11/730 of DEC PDP10's..
return. Here's some comments.
I ran a KA-10 for Ohio State, and later established the site for its
replacment, a KS-10 (the system in apparent discussion here). I was a
paid, full time, system manager. Both ran TOPS-10.
The KS is one pair of rather wide (24-inch) cabinets, and used much
less power than any other PDP-10 or -20. Compuserve used the KS-10's
as some kind of network node controller (whatever that was). OTherwise
they ran the KL's or KI's. Maybe they had a KA somewhere, at some time.
Anyone interested in what these are, can search the Web for PDP-10's
and PDP-20's, and get correct and better information.
There are probably software emulators for these machines. Again,
search the Web.
Running a mainframe, and keeping it running, is a serious commitment.
I get a little tired of saying that. So run around the Web, look for
people running these today. Size up what they are doing, come to your
own conclusions. Or, rent a truck, grab a mainframe and fill your
basement, and blow your circuit breakers as you learn. Or, run an
emulator and just wrassle with the software. Your call.