Today's entry:  A "DTC 3181E" SCSI controller.  ISA.  25-pin female port.
Soldered over 50-pin internal plug.  One chip - a DTCT-436E.

Browsing, I found "DTC-TECHNOLOGY.COM", who sell several RAID controllers,
and one model of SCSI controller.

It came free with a scanner - the scanner is sticking to my Mac, so the
card's basically spare hardware, but I figure I should see if there's
a driver.  Never hurts to have a spare SCSI interface.

-s