23 Nov
2006
23 Nov
'06
4:33 a.m.
On 11/23/06, Chuck Guzis <cclist at sydex.com> wrote:
Could the SSM 6502 S-100 card (the earliest alternate
CPU card that I
can recall) co-reside with a 8080 CPU card? It seems to me that one
of the early "alternate" cards would simply pull the bus "hold" line
high to do this, But it's been a loooong time...
In a related vein, the OSI Challenger III had *3* CPUs (6502 and two
others... can't remember exact models right now, but at least one was
either an Intel 8080 or a Zilog Z-80)... you fired up the machine with
whatever its primary processor was, then selected whatever you wanted
to use and the other two were dormant.
Sorry I don't have more detail, but I was about 11 the last time I saw
one, and many of the particulars were mysterious to me. I'd love to
have a C-III, but they are unusual enough that I doubt I'd ever run
across one in the wild, despite the fact that I grew up 2 hours drive
from the factory.
-ethan