> I have a pre-CTRL-A Adaptec SCSI adapter (I don't know the exact flavor, but
> it does not respond to CTRL-A during boot).  Do I need Adaptec software to
> configure the card -- specifically, turn off internal bus termination -- or
> is it a dipswitch/jumper tweak?

I have a 1540B in a system here. I'm pretty sure that the termination resistor
packs on your board are socketed, like they ussually are on an older SCSI
device. I believe all you need to do is pull them off the board.