29 Jan
2010
29 Jan
'10
4:05 a.m.
On Jan 28, 2010, at 10:36 PM, Ben wrote:
Well if remember right a 2 MHZ 6809 with Memory
Managment Unit
could run 2 to 5 users under OS/9 level two at modest serial
baud rates.( 300 to 1200 baud ) That to me is a full system. I
consider a 6809, 1/3 a PDP 11 in computing power as a ballpark.
It'll do a good bit more than that. My high school used a UniFLEX
system that was a 2MHz 6809 with about a dozen 1200-baud terminals.
It was used to teach Pascal. Interactive performance was typically
pretty good.
And you do realize "PDP-11" spanned some two and a half decades
and more than a dozen implementations with a huge range of processing
power ranging from "wimpy" to "big clanging brass balls", right?
-Dave
--
Dave McGuire
Port Charlotte, FL