-----Original Message-----
From: CLASSICCMP_at_trailing-edge.com <CLASSICCMP_at_trailing-edge.com>
To: classiccmp_at_classiccmp.org <classiccmp_at_classiccmp.org>
Date: Thursday, February 10, 2000 8:58 PM
Subject: RE: RX01 Bootstrap Loader
>>Like trying to find a needle in a haystack.....
>
>Not all *that* hard!
>
It actually was as I have all the material before '78. I thought it might be
in the PDP-11/05 manual but I could not get at it.. and pulling boxes of
RT11 would be a lot more headache than asking someone here.
>>Would anyone know which handbook/manual the RX01 bootstrap loader is in?
>
>The RT-11 Installation manual is one place, the RX11 manual is another,
>any of the "Microcomputer Interfaces" books that has the RXV11, ...
>
I found that in my own collection :-) . I just saw the abereviated version.
>>I need to toggle in the RX01 bootstrap into a PDP-11/20 with 4K config.
>
>You could just, say, go to
>
>
ftp://metalab.unc.edu/pub/academic/computer-science/history/pdp-11/bootstrap
s/
>
>and fetch "rx01_boot.txt".
>
I saw that book was 1980. I checked 1976,78, peripheral handbooks.. no
luck.. Processor handbooks also didn't help too much. I knew I saw it
somewhere (prob. 11/05) but was not sure. Thanks for the help.
>What are you going to try to boot in just 4K, BTW? I'm scratching my
>head to figure out if even RT-11 V2 fit in that small a space...
>
I don't believe it will . Neither will RT11 V1. DOS/BATCH requires a minimum
of 8K too!
Even though RT11 only uses up 2K core it still won't load without 8K
minimum.
The only "OS" that supports 4K is "PTS-11".
I needed to boot RX01s as that is a lot easier to run diagnostics across a
bunch of 11/20s quickly... beats paper tape!. I have some old diagnostic
disks/diagnostic code on RX01s for the 11/20. Most of the PDP-11/20s I am
restoring have serial numbers under 400 so most manufactured at that time
were configured with paper tape and 4K core. Most of the 11/20s I got were
configured with paper tape/4k core. The *newer* ones have DECTape.
I am testing all the PDP-11/20s after a basic rebuild with 4K core.. I will
add more MM11-Es depending on what is requested.
Due to the instruction set incompatibilities between the 11/20 and other
11s, will they even run RT11 V30B with 8K core?
I expect most will probably just want PTS-11 and DOS/BATCH with an 8K core
system.
john
PDP-8 and other rare mini computers
http://www.pdp8.com
>--
> Tim Shoppa Email: shoppa_at_trailing-edge.com
> Trailing Edge Technology WWW: http://www.trailing-edge.com/
> 7328 Bradley Blvd Voice: 301-767-5917
> Bethesda, MD, USA 20817 Fax: 301-767-5927
>
>
Received on Fri Feb 11 2000 - 23:22:54 GMT