5 Nov
2003
5 Nov
'03
12:52 p.m.
Pete Turnbull declared on Friday 31 October 2003 02:56 pm:
Yes, it is straight-through. One of mine has 8"
of old 40-pin ribbon
cable from an Acorn 2nd Processor, vintage 1985 or so, and it works
fine. The back of the bulkhead connector is just a dual row of pins on
0.1" centres, and an ordinary female header fits perfectly. Of course,
depending on which way up you have the bulkhead connector, you might
need a half-twist in the ribbon cable.
Well, I feel like a moron. Flipping one end of the cable fixed it, and
made the FAULT light go out. After a few hours of messing around with
things, I now have NetBSD booting on a VAXstation 3200 with an RLV12 in
it. I was just able to read and write the entire disk.... and the last
sector was all 0's before writing the disk (no bad sectors!) Not too bad
on a -DC cart. Now, to test out my -EF cart, the only other one I have.
I *hope* that one has no problems : )
But first, I have to attempt to write a bootable disk image for a
PDP-11/23...
All I can say right now is "WAHOO!" I'm glad I spent the 3 minutes to try
playing with the cable. Of course, that doesn't mean that I don't still
want drives or more carts. : ) Does anyone have any RL02 carts to spare?
Pat
--
Purdue University ITAP/RCS
Information Technology at Purdue
Research Computing and Storage
http://www.itap.purdue.edu/rcs/