29 Jul
2004
29 Jul
'04
1:14 p.m.
From: "Jay West" <jwest(a)classiccmp.org>
Tony wrote...
Hi Jay
Yes, those CMOS RAM's used for cache that were in the
narrow packages were quite fast enough. As I stated in
a previous post.
Dwight
I would doubt it. Those old fusible-link PROMs
were actually quite fast
with access times of <50ns in many cases. And the designs depended on it.
Surely
that's easy to get around. Upon power up - or when a reset button is
pushed, the device reads the image from EEprom and places it into SRAM,
which is what is actually accessed. Isn't SRAM fast enough?
Jay West