On 10/17/2012 08:05 AM, David Riley wrote:
This is an ongoing project. It utilizes the 16 bit
mode of the 80386 to
address the 16MG of RAM the S-100 bus is capable of addressing.
Just out of curiosity:
Wouldn't an 80386SX have avoided this restriction and been much easier?
To my recollection, the 386SX only came in surface-
mount packages. The N8VEM folks (including the S-100
group) have done a pretty good job of making sure all
their boards can be assembled with only through-hole
parts, which makes it a lot easier for novice solderers
with cheap irons.
The 80386SX also came in a PLCC package, which can either be soldered
directly, or placed into a socket. PLCC sockets are either
surface-mount or through-hole. (I know you know this, this is for the
benefit of the less electronics-inclined among us)
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA