ces and a higher
quality environment than what is available running MacLisp on our
well-loaded academic DEC-20's.

GCLisp needs at least 512K to run, and you really ought to have 640K (the
max addressable on a PC) in order to use the system to its fullest without
running out of memory too quickly.  You don't have to have a hard disk,
although it helps.  On the new PC/AT, GCLisp can address up to 1 megabyte of
memory.  (You can put up to 3 meg on an AT, but Gold Hill uses some of the
bits in each 32 bit address for type codes and other stuff, so only 20 bits
are available for addressing.)

Gold Hill's address is:  Gold Hill Computers, Inc., 163 Harvard Street,
Cambridge, MA, 02139.  Telephone (617) 492-2071.

In summary:  this is a superb product.  It puts state-