>Date: Mon, 20 Nov 2000 13:09:31 -0800 (PST)
>From: Ethan Dicks <ethan_dicks_at_yahoo.com>
>
>- --- David Gesswein <djg_at_drs-esg.com> wrote:
>> I thought that the RK8E needed the IC
>
>Perhaps. I've never owned a working RK8E.
>
>> and the original cable I am using with my RK8E does have it installed.
>
>That's pretty suggestive. OTOH, perhaps that's there for RK01/RK03
>compatibility? (Just a WAG)
>
I have looked further. The IC etc seems to just buffer the Omnibus
power ok signal to drive the RK05 power good. The later card just
connects them. I tried a C card without the IC in my computer and seemed
to work fine. (Watch out, the red stripe was not on the pin 1 side
of my C versions of the cable)
Looks like any M993 may work fine but I didn't try to track down how
the RK05 generates it's DC low or if it changed between versions.
I have put pictures of the boards at
http://www.pdp8.net/rk05/rk05.shtml
>> The RK8E (with M993C) and RK05 schematics are on my web site
>
>Roger. As I said, though, I have a set, too.
>
I was trying to go back in the archive and see what had been said (I think
my memory refresh failed awhile ago) but I can't find a working archive.
The www.classiccmp.org seems to stopped in August. www.retrobytes.org
seems to also stopped in August and was putting everything in April.
Does anybody know of a good archive?
David Gesswein
http://www.pdp8.net/ -- Old computers with blinkenlights
Received on Tue Nov 28 2000 - 07:35:52 GMT