Lisp, the machine language. Was Re: Hallelujah! - test-drb@ccmp.vtda.org

4 Apr 1999

...
 On Sun, 4 Apr 1999, Buck Savage wrote:
 not stored in RAM.  Instead, they are stored in
ROM. 
AFAIK, they are hard-coded into the CPU (except for PERQ and the like
where they can be altered). ROM conjures up images of little socketed
chips on the motherboard.

--Max Eskin (max82(a)surfree.com)

Consider the PDP 11/44 in my living room.  It is constructed using the
AMD 2900 series of bit-slice microprocessor chips.  In this case, the
microcode is, in fact, stored in ROM chips, each of which is socketed to
the motherboard.

For some other types of processors, sure, the CPU real estate does 
carry the code but, the part of the chip that holds the code is ROM.

William R. Buckley