[comp.periphs.scsi] Exabyte moved to mips - possible problem?

chris@suite.sw.oz.au (Chris Maltby) (04/03/91)

We recently moved an Exabyte drive from our Sequent
(connected via a Pertec/SCSI interface) to our RC3230
where is is connected to the builtin SCSI bus.

All aspects of the new arrangement are perfect, except
that we seem to have encountered some sort of intermittent
problem with the RC3230 or RISC/OS 4.51. The problem
occurs when we re-read to verify our backup tape in the
small hours of the morning. The system panics with the
following message:

PANIC: assertion failed: nested_interrupt == 0, file: swtch.c, line: 91

We think this may be due to either the rate of data transfer
or possibly to SCSI protocol problems. If it's a SCSI protocol
problem, can any net readers let me know if Exabyte switch
settings could be the cause and what the right switch might be?

Thanks in advance...

-- 
Chris Maltby - Softway Pty Ltd	(chris@softway.sw.oz.au)

PHONE:	+61-2-698-2322		UUCP:		uunet!softway.sw.oz.au!chris
FAX:	+61-2-699-9174		INTERNET:	chris@softway.sw.oz.au