29 Jan
2010
29 Jan
'10
4:23 a.m.
Dave McGuire wrote:
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.
The Missing 6809 UniFLEX Archive
http://www.rtmx.com/UniFLEX/index.html
This needs to mirrored.
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?
Yes, but the PDP 11 was designed to have raw power from the original
design. OK, they goofed on a basic address space of 18 bits. The 68000
comes close in design but offhand I still think the 68000 had only
16 bit addressing*. I do know it took a few revisions of the chip to get
a MMU for it. By this time I moved from a COCO II to a PC clone
and never got to play with well designed chips.
-Dave
Ben.
*I know it had long addressing, but think that was absolute
not indexed.