🚀 go-pugleaf

I need help identifying and getting working an 8-port serial card in a
sparc 1+.  The card is labelled on the stencil as follows:

SSC-80
SBus 8-channel serial
Texas Microsystems Inc.
Houston Texas  1989

The card has been in the machine for some time, unused, and the
charity group who inherited the box know nothing about it, but now
have a need to use it. Sitting right next to it is a working, in-use
Sun 8-serial/1-parallel card, identified at bootup as SUNW,spif0 by
the modload'ed "stc" driver.

The cards look very similar, and use very similar-looking Cirrus Logic
ASIC's and other chips.  I suspect that the TMI card is supposed to be
a clone of the Sun card, and is faulty - certainly the stc driver
doesn't find it.

Otherwise, I will need an approriate driver for this card, for SunOS
4.1.3.

Does anyone recognise the card?  Does anyone have contact information
for the company?  I have written down more information, ROM version
numbers and so on, if it matters.

Any help much appreciated, replies by email to danielce@ee.mu.oz.au,
please.

--
Dan.