6 Mar
2014
6 Mar
'14
3:32 p.m.
Date: Wed, 5 Mar 2014 20:37:57 -0500
From: David Gesswein <djg at pdp8online.com>
To: cctech at classiccmp.org
Subject: Re: PDP-8a Restoration/RL01 issues
Message-ID: <20140306013757.GA8832 at hugin2.pdp8online.com>
Content-Type: text/plain; charset=us-ascii
On Wed, Mar 05, 2014 at 09:32:02AM +0000, anders at abc80.net wrote:
Ok, I see. I have now found the 8,2MHz clock generator on the
RL8A-controller, to check that must be a good start. Then the line
driver circuitry so the clock shows up in the drive.
How much of this depends on a working controller
(RL8A)?
I haven't gotten to getting my drives working so can't give first hand
info. From previous postings the drive needs the clock from the controller.
For a start i would like to run the controller
diskless controller
test, AJRLAAO. Then the AJRLBAO/AJRLCAO drive test. I have searched
the net after those but haven't found any sources. I wander if
anybody have those and the documents on them?
No good scans appear to be available. January posting with link to
photos from my fiche viewer. I have the full set but no easy way to
scan. I can take more pictures this weekend if you find you need them.
http://www.classiccmp.org/pipermail/cctalk/2014-January/155010.html
My fiche are for newer revisions than the binaries I have. You can
download .bn tape image by clicking on the more link on this page for the .dg
http://www.pdp8online.com/pdp8cgi/os8_html?act=dir;fn=images/os8/diagpack2.…
Then what else
should I do?
From my RK05 work clean drive and heads and inspect/clean pack. Hopefully
people
more familiar with RL01 will chime in. Do RL drives have bad foam
that needs replacing?
If you get the system up and the pack have interesting contents I would like
to get a dump at some time. I started working on a dump/restore for RL
packs but it hasn't gotten tested since I didn't have a working system
and the person I was working with didn't try it. I should be able to get
it running after VCF in early April.
http://www.pdp8online.com/ftp/software/dumprest/