Well, Symbolics did not manufacture the new CPU. That would have been too costly. LMI manufactured prototypes of their CPU, but these were older technology - n

Well, Symbolics did not manufacture the new CPU. That would have been too costly. LMI manufactured prototypes of their CPU, but these were older technology - not microprocessors, but VME-board sized CPUs. Xerox mantioned that they were developing a Lisp RISC, but it never surfaced. The SPUR project designed a Lisp RISC Chip: ftp://ftp.cs.wisc.edu/markhill/Papers/jsscc89_vlsi_spur.pdf