14 Nov
2007
14 Nov
'07
11:42 p.m.
On Nov 14, 2007 10:53 AM, Chuck Guzis <cclist at sydex.com> wrote:
On 14 Nov 2007 at 9:48, Eric J Korpela wrote:
It seemed in the late 70s that microprocessor instruction speeds were
pretty well matched to the memory access time. 4MHz processors and
250 ns DRAM Of course this could be an artifact of the design (the
processors may have been slowed down from their potential speeds in
order to match the memory speed).
Now you've done it. I'm having "wait state" flashbacks. I remember
being impressed by a 7.16 MHz V30 running with no wait cycles so long
as you didn't want to play a game...
Eric
Ah, the good old days when processor and memory
operated at nearly the
same speed.
That hasn't been true probably since the 1950's. Core was slow
compared to CPU speeds and drum was even slower, particularly if
random access was employed. Modern memory is actually a closer match
to CPU speed than drum ever was.