Thanks to
Mike Raffety <miker@sbcoc.com>
Karl A. Anderson <karl@thuja.gsfc.nasa.gov>
poffen@sj.ate.slb.com (Russ Poffenberger)
The disk in question is ESDI and has a controller card ( actually a
scsi to esdi adapter) in the shoe box.
All you have to do is set the DIP switches 1-3 @ SW1 to 100(binary).
ORIGINAL QUESTION BELOW:
###################################
>
>
> How do I add a shoe box with a micropolis 1355 disk to an existing
> sun3 sun with disk/tape in its shoe box.
>
> I know that I should do :
>
>
> 3/60 (CPU) -----> shoe box to be added -----> existing shoe box {disk,tape}
> TARGET 1 TARGET 0 , TARGET 4
> sd2 sd0 , st0
>
>but the question is how do I make the shoebox to be added become TARGET 1 , sd2
>I do not have a Field Engineers Handbook and am hoping someone can tell me what
>jumpers on the disk and/or scsi controllers I have to change.
>
> Also how do I ( or is it required ) unterminate the shoe box to be added since
> it will not be at the end of the scsi chain as it was.
>
> ( Doesn't matter I,m sure but SunOS 4.1.1 , sun 3/60 is in use )
>
###################################
ANSWERS RANGED FROM its hard to do, never worked for me , to the solution
below. NOTE: ensure the terminators are removed from the middle shoe box and
not from the one at the end of the scci chain.
Condensed summary of replies below:
###################################
I couldn't have done it without a lot of hints and some pages from the Field
Engineers Handbook. Good luck.
Well, could you forward me a copy of the solution to this problem. It's
something that I had been meaning to find out (but never actually needing to
know). Thanks.
Open the shoebox to be added. You'll find a controller board mounted
in the middle, on a big U-shaped metal bracket, with four screws on the
flange around the edge (a socket set with an extension is essential).
Remove it; underneath is the SCSI/ESDI controller. At the front edge
(away from the connectors end of the shoebox) is a DIP switch; just
set it to the desired SCSI address (probably just move the first, or
lowest-numbered, switch on, to get SCSI address 1). There's a yellow
pack that looks like a chip; that's the termination resistor. Remove
it (but SAVE it!). Put it all back together again. (;-)
I never had success in adding any scsi-disk to an existing
shoebox ( Sun3/60 or 3/1xx under SunOS 4.1.1 ). I tried Fujitsu, Maxtor,
Micropolis and some other. I jumpered what ever was possible, but
the Sun refused to add a second scsi-disk. I suppose it has
to do with SunOS 4.1.1 .
Is the Micropolis 1355 a SCSI disk or an ESDI disk? If the latter, the
shoebox will have a SCSI "controller" (actually a SCSI-to-ESDI adaptor)
with switches or jumpers to set the SCSI ID. For an Emulex MD21 board,
these are switches 1-3 on switch block SW1.
What you need to do is open the shoebox (take off the cover), then with the
shoebox in front of you, facing the front of the box, look at the board on the
bottom, in the middle of the box. This is the MD21 SCSI to ESDI controller.
On the front right side of the board is a dipswitch. Move the first switch
(closest to the front) to the ON position.
That should do it.
THANKS TO THE FOLLOWING FOR ALL THEIR HELP:
From: Mark Ferraretto <mferrare@physics.adelaide.edu.au>
From: David.Hough@Eng.Sun.COM (David Hough)
From: nulspace@cs.UMD.EDU (Michael Chang)
From: Mike Raffety <miker@sbcoc.com>
From: michael@daedalus.ts.go.dlr.de (Michael Klein)
From: Karl A. Anderson <karl@thuja.gsfc.nasa.gov>
From: poffen@sj.ate.slb.com (Russ Poffenberger)
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