16 Jun
2008
16 Jun
'08
7:29 p.m.
On Monday 16 June 2008 22:16, bfranchuk at jetnet.ab.ca wrote:
Roy J. Tellason wrote:
Guess I should've mentioned wire-wrap in there someplace too... :-)
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
I'm not familiar with many 6800 designs, but
I was somewhat surprised to
see how limited some parts are, like the 8085 in the "8085 Cookbook"
where you could really get away with very little. OTOH, the c64 doesn't
use any buffering _at all_ and yet the CPU in there seems to have little
trouble driving 3 ROM chips, a set of 8 4164s, plus all the
peripherals. I'm guessing that the Z80 is probably somewhere in between,
and that the datasheet probalby won't give me the whole story anyhow.
I think the PADS PCB demo program has Z80 cpu controler already designed
to save you some work. I suspect there is a PCB already done on the
internet for you. I don't have time now to look as am going grocery
shopping now.