The  only  problem  with running CP/M  on  a  Z-80 
machine  is that lots of your programs are written 
in Z-80 assembly language,  while DIGITAL RESEARCH 
only supplies an 8080 assembler and  disassembler.  
Many  times  this  presents  a  terrible  problem!  
Finally,  here is half of the answer:  a free Z-80 
assembler  that supports all of the standard ZILOG 
mnemonics!

Assembly   language  programmers  will   need   no 
explanations  as to how this package is used,  and 
the  rest of you are invited to peruse  the  ZILOG 
manuals  as  well as the Z80ASM.DOC file on  this 
disk.

Have fun!