16 Nov
2005
16 Nov
'05
6:34 p.m.
Subject: Re: homebrew 'puter project (was: 8008?
From: "Chuck Guzis" <cclist at sydex.com>
Date: Wed, 16 Nov 2005 10:14:12 -0800
To: cctalk at classiccmp.org
If I were to build a system from chips today, I'd probably relegate all of
my I/O devices to some commodity interface, using single-chip
microcontrollers where some particular intelligence was required. Leave
the CPU free for the heavy computational lifting.
Cheers,
Chuck
Unless it gets crzy I tend to do that. Create a parallel interface with
a protocal to talk over it to a slave and let the slave do the grunt work.
Did that back around 81 for the first time using 8085 and 8035 and found
it nice to have a limited IO on the host yet get good performance. Now
with AVR, PIC and others it's pretty reasonable. Just let it interrupt
the host when there's something for it or when done.
Allison