DSSI is not even loosely related to SCSI.
DSSI is a complete CI implementation, but uses a parallel
bus cable instead of coax cable and a star coupler as physical
transport.
The DSSI spec (or the nearest thing I have to it) says otherwise.
The physical layer (bus signals, low level protocol, bus
phases etc.) are all either taken directly from SCSI or are
a slightly modified version.
Even the DSSI adapter is software compatible to the CI
adapter.
True
SCSI is a mass storage interface where DSSI is more
some kind of a SAN.
DSSI certainly supports SCA but if you look at the SII I'm
sure you'll find that it can do both SCSI and DSSI. I'd be
even more sure if I had an SII spec.
Antonio
--
Antonio carlini
arcarlini at
iee.org