13 Nov
2003
13 Nov
'03
6:50 p.m.
On Nov 13, 21:48, Eric Smith wrote:
I thought the R4600 was, though maybe it was early 1994, but actually I
wasn't claiming any particular date -- just that they do speculative
execution.
until
Peter Turnbull wrote:
> Then I get three because I understood it, and can think of
processors
that do it --
and a few more because I've not only got some (MIPS
R4600, R5K and R10K)
None of which were available in November 1993. And having used the
R4600 quite a bit in 1996, I'm fairly sure that it did *not* have
speculative execution. The Pentium
can do speculative execution as well,
The Pentium was superscalar, but did not do speculative execution.
SE was introduced with the Pentium Pro, which was not introduced 1995.
I meant the Pentium family. Yes, I knew the Pentium Pro was the first
-- and it didn't work all that well so Intel changed the branch
prediction algorithm for the Pentium II.
--
Pete Peter Turnbull
Network Manager
University of York