I've plugged an EXB-8200 into my Adaptec 2940 (not UW), and the following
error messages are occuring:

st0(ahc0:6:0):  Check Condition on CDB: 0x1a 00 00 00 0c 00
    SENSE KEY:  Illegal Request
                EOM Detected
     ASC/ASCQ:  No Additional Sense Information

Here's the output of dmesg for this card:

ahc0 at pci0 dev 14 function 0
ahc0: interrupting at irq 11
ahc0: aic7870 Single Channel, SCSI Id=7, 16 SCBs
scsibus0 at ahc0 channel 0: 8 targets, 8 luns per target
ahc0: target 0 synchronous at 10.0MHz, offset = 0xf
sd0 at scsibus0 targ 0 lun 0: <IBM, DSAS-3720     !b, S47Y> SCSI2 0/direct fixed
sd0: 695MB, 3875 cyl, 4 head, 91 sec, 512 bytes/sect x 1423360 sectors
st0 at scsibus0 targ 6 lun 0: <EXABYTE, EXB-8200, 2680> SCSI1 1/sequential remov
able
st0: drive empty

This machine is at the 19981207 snapshot, so if it's a matter of upgrading,
please let me know.

Thanks,
David

-- 
David W. Rankin, Jr.     Husband, Father, and UNIX Sysadmin. 
   Email: drankin@bohemians.lexington.ky.us   Address/Phone Number: Ask me.
"It is no great thing to be humble when you are brought low; but to be humble
when you are praised is a great and rare accomplishment." St. Bernard