Since most of the boards and parts are CMOS running the whole thing off a
battery and switch mode regulator (for power conversion efficiency) would
be easiest.
?
For mine that means replacing the 8250 with 16C450 and the ttl parts with CMOS.
Everything else save for leds and display are CMOS.?
?
The FP (display) and SIO (8250 and TTL) boards are the highest power consumers.
?
I've built a few all comos systems (both z80 and 80C85 based) and I can get the
power under 30ma @ 5V without effort with the system running CP/M and
application.? I use those for monitoring things (data logger) where run time on
battery needs to be greater than a full week (24x7).
?
?
Allison
