9 Sep
2007
9 Sep
'07
8:20 p.m.
On Sep 7, 2007, at 1:07 PM, Chuck Guzis wrote:
If one wanted to goof around with the Z8000 family as
a coprocessor
card, I'd be sore tempted to wire up something with a Z8002 and 64K
of SRAM. You get the instructions without the expense and you don't
have to deal with the (awful) Z8000 segmented mode. And relatively
easy to do a lashup. Instead of Ciarcia's bucket, you could probably
do with a single Z8036. Fit the whole thing on a "short" card.
I would love to do that. Actually, even more than that, I'd
really like to put together a Z8000-based SBC with some dialect of
Forth in ROM. I have a few Z16C02 and Z8536 chips here that might be
well-suited to that purpose.
IMOHO, only Motorola and NS of all of the "16
bit" chip producers
ever understood the importance of a continuous non-segmented memory
space. Given the time of introduction, I consider the 68K to be a
marvel of MPU design. Too bad IBM didn't adopt it for the PC.
...a bad decision for which the world is still paying the price.
-Dave
--
Dave McGuire
Port Charlotte, FL
Farewell Ophelia, 9/22/1991 - 7/25/2007