I'd suggest not mapping SSA onto the parallel SCSI device driver
family; It's different enough from parallel SCSI to cause massive
confusion if you try to shoehorn it into the command set -- for
instance, the SCSI-2 command set is saturated with commands which
have 3 bits for LUN, so a SSA architecture that attempts to map disks
to LUNS will be unpleasantly surprised when you put more than 8 disks
on a chain.
SSA allows, what, 127 devices on a chain? You'll not fit that
into a 3-bit LUN with any degree of success (but you will be
able to fit that into 4 bits of ID and 3 bits of LUN; I suspect
that's how the mapping would go onto a SCSI-2 command set, and
that, at the very least, would be compatable with the addressing
scheme I proposed in my original message.)
____
david parsons \bi/ now if you have more than 8 partitions on a disk,
\/ then you could have trouble in river city.