Apple High Speed SCSI card manual/docs?

[Jack Countryman <jcountry@seidata.com>]

I've got an Apple High Speed SCSI card given to me...supposedly not
working.  I no longer have a good one, a manual, or any docs for one of
those cards.  I don't even recall what the four switches control
anymore.  Doesn't the first one do DMA on/off (which setting is which?)
and the others set scsi id (normally set to what...7...so as not to
conflict with the drives' ids?)...or is my memory failing me?

All help/leads appreciated.  Thanks.