foreign functions

[kumyew@EAGLE.MIT.EDU (kumyew)]

I'm posting this on behalf of a colleague who doesn't
have access to info-macl yet...Please reply directly to
me.  Thanks.

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I've been trying to link up some C-code to allegro Lisp, but two
kernel functions have been giving me problems. The routines, Control
and OpenDriver, are handled fine by the C compiler, but when I tried
to load the C functions into Allegro using the foreign function
interface, LISP complains that it does not know the functions. If
anyone has any ideas on this, they would be appreciated.