Greetings!
    The few docs I have found on this (501-1910) card call it a "Bi-Pro"
for SPARCprinter.  Shall I assume that's technobabble for "special
purpose printer interface for SPARCprinter"?  I realize these printers
are, ahem, "unique" in their interface characteristics (I assume they are
little more than a marking engine?).  Anything else I should consider 
before hunting around for one (I see them periodically at surplus for
a few bucks...)?   Or, am I better served to stick with more
"mainstream" printers?

Thx,
--don