30 Jul
2000
30 Jul
'00
5:04 p.m.
Chuck McManis wrote:
At 08:39 PM 7/30/00 -0700, Chris Kennedy wrote:
Let me try that again. Processor speeds much in excess of 300MHz
require the use of custom blocks, largely because you need to use
precharge logic. This link refers to a project
using a part from the XC4000XLA family, which maxes out slightly
above 200MHz and isn't very dense -- 500K gates which is far
below what I'd expect to find in a contemporary workstation or
even game console class processor.
Still not sure what this does about extinction of older logic...
--
Chris Kennedy
chris(a)mainecoon.com
http://www.mainecoon.com
PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97
and you can't build a processor (or
something
that looks like a processor) these days without using custom cells,
i.e., non-synthesized hunks of code which describe the circuit
at the transistor level.
www.fpgacpu.org