[Techtoolslist] Z80 versus Z8000/Z8002

[ArselComm at aol.com]

In a message dated 12/10/2005 8:19:18 P.M. Eastern Standard Time,  
ajcrm125 at gmail.com writes:

Does  anyone know if the Z80 instruction set is a superset of the Z8000/Z8002 
or  vise versa?
Z80 is an 8-bit microprocessor that uses a superset of 8080. For us  old 
timers, the NEC V20 processor was a Z80 compatible that had an 8080  "downgrade" 
mode that would allow it to run the earlier instruction set. The  Z800x series 
is a 16-bit processor which uses similar instruction  functions, but I'm not 
sure that they're code-compatible. 
 
Robert Lilly
Arsel Communications
 


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