Very mysterious card

[louiss@gate.net (Louis Schulman)]

This card was found in slot 5 of an Apple //e, and was specifically marked
for slot 5.  The main chip is an AM25L04PC, which is not even listed in the
Chip Directory.  There is a 34 pin block, which was hooked up to a long
ribbon cable attached to a large Centronics connector (looked like SCSI type).

The card says REV4 C1980, and it appears that the name and other information
was intentionally ground off!  The card has two adjustable Pots, and 18 total
chips.  The //e that it was in had a Grappler printer card and a Super Serial
Card in other slots, along with a standard disk controller in slot 6.

Well, experts, what is it?  A very early SCSI card?  One more thing, there is
a label that says SN 6025.

Louis