In message  <Js80yYi8akcX089yn@execpc.com> PICLIST@MITVMA.MIT.EDU writes:
> The electronics was built around an RCA 1802 processor - anyone else
> ever use one of these?  No interrupts, no onboard timers, no call
> instruction, all indirect addressing.  A fun project.


I used an 1802 some years ago. The key features for me were
the low power consuption and the fully static core. We reduced the
current consumption by slowing the clock right down until the
processor was required to do some work.

The alternative processors at the time just couldn't compete.


Mike Watson