Hmmmm. I've got one of those I tried to test off
an Adapted 1542CF
That may explain some problems: The 1540, 1540A, and 1540B (and the
correspondong 1542 models and the EISA version (174X) where they existed)
were excellent devices - the CF had a well-deserved reputation of being
oversensitive about termination; this was especially true of the version
with the "SCSI-2" connector rather than the Centronics-type.
Andy