24 Jan
2018
24 Jan
'18
11:33 a.m.
Hello Plamen -
I use the SCSI controller that is built into the MVME177 transition module.
No, when I RESET the system, I just press the
RESET button on the processor board - usually
when it is hung with my software. On this
system, I only code in 68K assembly and so I do see the "occasional" hang :)
Is the "SCSI reset option" part of the 68K/BUG RESET command?
In my documentation - and I easily may not have
the latest documentation - I only see RESET
options to force a COLD or WARM start on hardware RESET.
The documentation that I have also cautions:
"...may cause the disk controller to be out of
phase with respect to the disk configuration
tables in memory", which certainly makes sense.
However, I do not modify any of those tables from system default.
I appreciate your input.
Regards,
Jack
Evergreen, Colorado
At 11:57 AM 1/23/2018, Plamen Mihaylov wrote:
What SCSI controller are? you using - MVME320, 327 or
328 ?
Do you reset the MVME177 board using RESET
command from 177bug> along with SCSI bus reset? option?
Best regards,
Plamen
On Tue, Jan 23, 2018 at 6:33 PM, Jack Harper via
cctalk <<mailto:cctalk at classiccmp.org>cctalk at 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 Harper, President
Secure Outcomes Inc
2942 Evergreen Parkway, Suite 300
Evergreen, Colorado 80439 USA
<tel:303.670.8375>303.670.8375
<tel:303.670.3750>303.670.3750? (fax)
<http://www.secureoutcomes.net>http://www.secureoutcomes.net
for Product Info.
----------------------------------------------------------------------------------
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.