Printing to AT / AT Coprocessing Card?

[David Lassner]

Page 10-1 of the A/UX 1.1 Network System Administration reference
says "Because of the high processing requirements of both AppleTalk
and the A/UX multitasking OS, AppleTalk under A/UX requires a coprocessing
card.  Contact your Apple representative for a list of cards that are
available from various vendors."  It goes on to give instructions for
installing the AppleTalk card.

Is this for real?  Do we really need a card to print to an AppleTalked
LaserWriter and if so, who makes them?
-- 
David Lassner, University of Hawaii Computing Center
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