[Info-vax] pdp11

[Johnny Billquist]

I can, assuming I can get my hands on them while in Sweden over xmas...
Still have an 11/70 running RSX, with a TU81 attached back there.

But you might find someone closer? :-)

	Johnny

On 2010-11-16 23:32, Dan O'Reilly wrote:
> ...and while we're at it, I have a few BRU-format 1600bpi magtapes written
> on an RSX system 25 years ago that I would LOVE to have the contents of.
> Can anybody help out?
>
> -----Original Message-----
> From: info-vax-bounces at rbnsn.com [mailto:info-vax-bounces at rbnsn.com] On
> Behalf Of Glenn Everhart
> Sent: Tuesday, November 16, 2010 3:15 PM
> To: info-vax at rbnsn.com
> Subject: [Info-vax] pdp11
>
> Yes, I remember running DOS on pdp11; first did that with DOS V4, which
> became known as DOS/BATCH in V8 and later.
>
> Anyone still interested in running it, I have some old DECtapes (for TU56
> drives, yes) that still have copies of DECUS 11-195 on them. That is a
> sub-monitor that can either greatly extend (and somewhat speed up) DOS-11 or
> also allow it to service 2 users at a time.
>
> (Seeing that you have at most 28K words of memory, it's tough to get more
> than two sets of CUSPs in memory at once. However I successfully used it
> with a 16K word machine with two users running....one driven by command
> files. There was also a print spooler that could run as a kinda/sorta third
> user in the mix.)
>
> If anyone can still read TU56 I would be glad to let them have the tapes in
> exchange for their letting me have a copy of the contents. The DECUS library
> used to have them but I don't know that they are still extant anywhere.
>
> DOS-11 would sort of run on DECtape, but there was a limit on its DECtape
> handling on the number of files that could be open on one DECtape at a time,
> which made it not very useful.
> Also what with all the swapping from disk that DOS did when PCP11/MFT11 (the
> DECUS 11-195 thing) was not loaded, watching it run was an exercise for the
> VERY patient...a bit like running VMS on a remote virtual disk over a 9600
> baud link. Interesting that it can be done at all, but not something you do
> unless desperate for some reason.
>
> Glenn Everhart
>
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-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol