Hello Bill -
Yes, there are two 4GB (32-bit addressing) SCSI
drives on the system and they do have different drive numbers.
I will double check the SCSI termination resistor things.
Motorola documentation is very sparse on this -
"attach the termination resistor" - nothing on
exactly where or what the resistor thing looks like.
I am far stronger in software than hardware.
I appreciate the adive.
Regards,
Jack
Evergreen, Colorado
At 09:47 AM 1/23/2018, william degnan wrote:
On Tue, Jan 23, 2018 at 11:33 AM, Jack Harper
via cctalk <<mailto:cctalk@classiccmp.org>cctalk@classiccmp.org> wrote:
Greetings to the List from the Snowy Rocky Mountains.
Beautiful clear sunny day here at +9F :)
The SCSI controller on the 68K development
system (VMEbus) that I have cobbled together
occasionally hangs after I reset one of the
processor boards (there are four MVME177-005 68060 boards in the VME rack).
The hang then happens when my software touches
the SCSI drives via the ROM'd 68K/Bug I/O
primitives and the hang will not go away even
after another reset until I cycle power.
I have never before dealt with SCSI as a
programmer - does this sound like something is configured incorrectly?
There is not much to configure.
I point out that I am not certain that I have
the termination resistors correct.
Thoughts?
I appreciate any advice.
Regards,
Jack
Evergreen Colorado
Jack,
Yes, two things that I'd be checking
1) Make sure all drives are assigned a different number
2) Make sure you have termination somewhere.
Depending on the OS there are commands to
display the scsi devices attached, as the OS sees them.
BillÂ
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Jack Harper, President
Secure Outcomes Inc
2942 Evergreen Parkway, Suite 300
Evergreen, Colorado 80439 USA
303.670.8375
303.670.3750 (fax)
http://www.secureoutcomes.net for Product Info.
