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SubjectRe: New pre-2.0.31 patches..
> Turned out to be entirely because of Wide Negotiation turned on in the
> BIOS.

Wasn't this mentioned before? ;-)

Some devices will choke on a wide negotiation message. The driver
will accept a rejection message from the device and disable wide
negotiation causing no ill-effect. But if the drive doesn't respond
with a message reject, the command probably timesout which is more
difficult to deal with.
> > You should enable this. SCAM stands for, I believe, SCSI Configured
> > Auto-Ma[gt]ically. The SCSI BIOS on the adapter will attempt to
> > probe the SCSI bus at boot up in a SCAM compliant manner. When your
> > machine boots, does SCSI BIOS see it?
>
> 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?

Probably.

> I now get term power from all drives. There doesn't seem to be that
> option on my Tosh 5701 internal CDROM, though. It just says 'Power' and I
> left it jumpered.

> Active terminators? External and internal? Apparently you only have one
> of the two chains used internally? Active termination simply refers to
> the drive providing termination via actual resistors, correct? Passive
> would be provided by the controller only, right?

Check out http://www.scsi-cables.com/line/scsiterm.htm

I use an active terminator on my external (wide) box. I also
use an internal in-line 50-pin active terminator at the end
of my internal (narrow) SCSI cable.

Dan Eischen
deischen@iworks.InterWorks.org

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