Wanted UNIX SCSI/SASI driver

[Jonathan J. Jefferies]

I would like to get a source copy of a UNIX  SASI/SCSI device
driver.  I am adding a SASI/SCSI interface to my System V
UNIX box (a callan unistar) and would like to at least see
how someone else coded one.  Obviously System V is preferable
for my situation but a UCB version would be useful as I will
modify to fit my own requirements.

Thanks in advance
Jonathan Jefferies