Re: New pre-2.0.31 patches..

Leonard N. Zubkoff (lnz@dandelion.com)
Sat, 9 Aug 1997 08:49:42 -0700


Date: Sat, 9 Aug 1997 10:43:32 -0400 (EDT)
From: Dave Wreski <dave@nic.com>

I enabled it, but it appears to not support it. The drive is a couple of
years old; possibly before its time.. Is this what the Sun drives use to
configure IDs automatically?

Possible, but unlikely I think. Recent Sun's use drives with SCA connectors
(Single Connector Attachment). The SCSI ID will be set depending on where the
drive is plugged in as the ID select pins are part of the 80 pin SCA interface,
along with the usual 68 pins for Wide SCSI and power.

Does the aic7xxx driver actually support SCAM? After a bus reset, SCAM devices
will not know their SCSI ID until the SCAM selection protocol has completed.
In fact, it's possible for SCAM devices to change their SCSI ID at any bus
reset, depending on the algorithm the host adapter uses to assign IDs.

Personally, I really hate SCAM.

Leonard