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In article <2B4B2A30.13984@news.service.uci.edu> rcaslis@hydra.acs.uci.edu (Russell Caslis) writes:

(text deleted) 
>I've heard that there is a jumper inside the unit that changes which
>mode it defaults to.  Can anyone help me find that jumper?

I was told both by our in house technicians and someone who works on 8500's
for a living that there is no such jumper. I also have the preliminary
user's manual for the 8500 (pub 510201-000) and it makes no mention of 
such a jumper. The information on mode select implies but does not 
explicitly state that the mode can only be set with the SCSI MODE SELECT
command. 

In article <1764@airgun.wg.waii.com> denham@hmsp04.wg3.waii.com (Scott Denham X7117) writes:
>In article <2B4B2A30.13984@news.service.uci.edu> rcaslis@hydra.acs.uci.edu (Russell Caslis) writes:
>
>(text deleted) 
>>I've heard that there is a jumper inside the unit that changes which
>>mode it defaults to.  Can anyone help me find that jumper?
>
>I was told both by our in house technicians and someone who works on 8500's
>for a living that there is no such jumper. I also have the preliminary
>user's manual for the 8500 (pub 510201-000) and it makes no mention of 
>such a jumper. The information on mode select implies but does not 
>explicitly state that the mode can only be set with the SCSI MODE SELECT
>command. 
>
>

The 8500 has a serial port on it, upper right when viewed from the back.
Exabyte gives out a program, "ctsmon" or something like that, which
lets a PC talk to this port (9600 baud).  It can load/exam drive
memory, registers, load/dump its firmware and default OPTION settings.
The F/W and options are stored in EErom.  Some of the mode selects
can be defaulted on powerup.  It is also to make a "option setting"
tape, either you can make it (via above PC), or probably get one
from Exabyte.  The tape can be loaded to set new options, without a PC,
and serial cable.  For more info Contact Jim Werder @ Exabyte,
303-447-7269.
--ghg

In <1764@airgun.wg.waii.com> denham@hmsp04.wg3.waii.com (Scott Denham X7117) writes:
| I was told both by our in house technicians and someone who works on 8500's
| for a living that there is no such jumper. I also have the preliminary
| user's manual for the 8500 (pub 510201-000) and it makes no mention of 
| such a jumper. The information on mode select implies but does not 
| explicitly state that the mode can only be set with the SCSI MODE SELECT
| command. 

The defaults for almost everything the 8500 can do can be set
through the monitor port on the back of the drive.  Exabyte is
pretty free about giving out a binary that runs on PC's to set
these values.  Some of the parameters are reflected in the reported
inquiry info.  Contact Exabyte for more info.
--
Let no one tell me that silence gives consent,  |   Dave Olson
because whoever is silent dissents.             |   Silicon Graphics, Inc.
    Maria Isabel Barreno                        |   olson@sgi.com