14 Jun
2006
14 Jun
'06
9:11 p.m.
From: "Chuck Guzis" <cclist at
sydex.com>
Don Y wrote:
Hi
Integration on chip exceeded the in speed the cost of I/O pins.
In other words, if the entire processor model was on one piece of
silicon, it could run faster than if it had to run cycle by cycle
through the I/O's.
Dwight
I think once the 2901 "fell from grace"
(?), this became a thing
of the past. I've designed two processors "from scratch" (TTL
with bipolar ROMs for the microcode store) and found it quite
an interesting exercise. Not just the "logic design" but
actually thinking about what the instruction set should be
for that particular application domain, etc.
Aprpops of nothing more than AMD, whatever happened to the AMD 29K RISC
processors? They were a very hot item at one point.
Cheers,
Chuck