Keystone(CDC)92185 SCSI to Sun 3/50 SCSI

[Norm Brososky]

Hello,I wonder if anyone has ever had any luck with trying to connect a
STU Keystone (CDC) SCSI to a Sun 3/50 SCSI,I can get it to pass the ST
test but it comes up with a sense key = 5 errors = 0.The tape moves but I
can't read or write to it.Do I have to write new device driver software?
Any type of help would be nice,

                  Thanks
                     Norm Brososky
                      CMU