allegro 4.3 under unix and xemacs 19.15.

Does anyone know how to limit the buffer size
of a lisp listener when allegro is run from
inside xemacs?  

Ideally this would be as simple as being able
to set some max number of lines X to be saved
such that the oldest are discarded as new
output is sent by lisp and displayed at the
bottom of the buffer 

- Dan