Probably use something a bit more common, say an ARM?
Not that I
have anything against a Z80 (or Z180, or EZ80). Just that extra
horsepower can be very nice, even if you don't need it right away.
If you are willing to go to an ARM, then I would put on say 16M and
have lots of room for a complete image - an ethernet inferface would
also be easy (built into many ARM devices), and would allow fast
transfer of images.
Dave
--
dave06a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools:
www.dunfield.com
com Collector of vintage computing equipment:
http://www.classiccmp.org/dunfield/index.html