Odd problem with AHA1542B, Archive tape, and Micropolis disk

[John R. Levine]

I have a 386 box with an Adaptec 1542B controlling a 660MB Micropolis disk.
Works great.  I'm trying to add an Archive 2150S SCSI tape drive with no
success.  The tape's in the middle of the cable with no terminator, and has
its ID set to 5.  I can't get ISC Unix, which is reported to work perfectly
well with this drive and controller, to admit that the tape is there.

The problem seems to be that the disk is responding to all 8 SCSI addresses.
When I run the diagnostic in the adapter BIOS, it reports that there is a
disk at every SCSI address.  The disk has jillions of jumpers on it, but of
course arrived in a documentation-free condition.  While I attempt to
explain to my dealer what the problem is and to get them to find a manual
for the disk, does this problem sound familiar?

-- 
John R. Levine, Segue Software, POB 349, Cambridge MA 02238, +1 617 864 9650
johnl at esegue.segue.boston.ma.us, {ima|spdcc|world}!esegue!johnl
Atlantic City gamblers lose $8200 per minute. -NY Times