[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Help with changing SCSI ID#



In article <Pine.SGI.3.91.960718230512.3189B-100000@umbc7.umbc.edu>,
Robert Rivkin  <rrivkin@umbc.edu> wrote:
>Thanks to the many folks who generously shared their
>experience with the Apple HiSpeed SCSI card 
>ID#7-problem-which-is-probably-the-source 
>of my "ghost" partitions on my friend's Rom01, 
>I went to change the ID# and, alas, the changer 
>didn't [doesn't] respond. :-(

   Since you already opened it up to check on connectors, how about
junking the spinner connector and replacing it with a few jumpers?
What drives normally have is three pairs of pins, for bits 1,2 and 4.
Dropping a jumper across any pair of those should force it to non-7:

o X o
  X 
o X o

  Where 'o's are raw pins, and the Xs are the jumper. Other
configurations I've seen are 4 pins in a row, with one common signal
that can go to the other three. Putting a jumper across the end two
(might have to try both ends) should work in that case:

XXX o o

   [same terminology]

Nathan Mates




--
<*> Nathan Mates http://www.ugcs.caltech.edu/~nathan/      <*>
# What are the facts? Again and again and again-- what are the _facts_?
# Shun wishful thinking, avoid opinion, care not what the neighbors
# think-- what are the facts, and to how many decimal places?  -R.A. Heinlein