Practical Electronics CHAMP/Tangerine Microtan 65

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Thu May 22 15:19:34 2003

> > I should still have all 10 artictles for the CHAMP,
> > CHAMP-PROG and
> > CHAMP-UV (EPROM eraser). But don't even think of
> > building one now -- just
> > about all the LSI parts (CPU, RAM, memory interface,
> > EPROMs, etc) are
> > almost unobtainable.
>
> That would certainly add to the challenge of building
> one, not to mention the timeframe. I did see a 4040
> and some 1702's on ebay the other day. Could the other
> parts be emulated somehow ?

Oh, quite probably (data sheets for them exist). But why bother? Either
make a simple 8 bit single-board machine round a common processor (6502,
Z80, 6800, 6809) which will use commonly-available memory and I/O chips,
or make a processor from scratch (either using TTL, or if you insist, an
FPGA). Either is more fun and less work than trying to get the parts for
the CHAMP, and then finding you've blown one by making a wrong connection
and that you can't get a replacement for it...

-tony
Received on Thu May 22 2003 - 15:19:34 BST