----- Original Message -----
From: "Tim Riker" <Tim at Rikers.org>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Tuesday, April 08, 2008 11:40 AM
Subject: Re: HP-1000 HP-IB / GP-IB IEEE-488.2, etc
As for cables,
the 12821A cable has a massive ferrite core and a
grounding lug that the 59310 cable does not have. But I believe that
the two cables are electrically compatible.
I know I have a 12821A cable that was cut, and a replacement connector.
(if your up to building your own)
Yes! If your offering, I'll take you up on it. I have extra card edge
connectors, but not the IEEE-488 ends.
Bob... I have a spare HPIB cable (complete) that I would part with . The
hood is marked 59310-60008 and there's a good sized ferrite bead on each
end... and... there's a grounding lug on the computer end of the cable. Are
you saying this cable is inferior for disk access to the the 12821A cable?
I'm not positive but, I think this the same type cable I had when booting my
HP1000 off CS80 disks. What is the marking on the 12821A cable?
Unfortunately, I don't have a bootable CS80 disk handy to test the cable. I
lost the binaries when I moved and have not found again them (yet). I do
have the original source code (on cellulose) so, I could recompile
everything and build another CS80 system but, that is not at the top of my
todo list. Building the disk from scratch is a PIA :-)
I'm working on a PC to HP-IB disk/tape project right now but, I'll probably
start dinking with the HP1000 CS80 stuff again in the next month or so.
Tim... If you want the cable, send me your address. You can have it for the
cost of shipping + $5.00... That'll pay about half my cost in gas to the
Post Office. And save you a bunch of time soldering that rats nest :-)
I also have several cables from other systems that have a HP-IB connector on
one end and an incompatible connector on the other end. If Tim feels like
soldering on new edge connectors, I would be willing to part with a couple
of those as well. Sorry but, I don't have any spare edge connectors / hoods.
See yas,
Steve Robertson
steerex [at] ccvn [dot] com