From: bsa@kf8nh.wariat.org (Brandon S. Allbery) Subject: Re: Pentium Date: Wed, 21 Apr 1993 02:00:50 GMT
In article <1993Apr20.163316.12290@jupiter.sun.csd.unb.ca> u0xh@jupiter.sun.csd.unb.ca (Just me again...) writes:
>>The pentium chip is 100% compatible, the only differences lie in its
>>improvements (if you call expansion improvement) of the command set.
>
> The Pentium command set has not been expanded as far as I've heard.
I have heard this also: there are something like 5 new instructions, none of
which are user mode and at least one of which is for a super-special mode that
nobody's supposed to use :-)
>386. This is not the case however, because Pentium optimized software will
>supposedly run ~5% faster on a 486, becuase the optimization is so high.
Um, I heard the opposite: Pentium-optimized software will run *slower* on the
386/486 because the optimizations for Pentium are different.
Of course, I "heard it" from OST, in which I always catch several outright
errors and a lot of "spin control" in every issue... it should probably be
taken with a largeish grain of salt. . . .
++Brandon
-- Brandon S. Allbery bsa@kf8nh.wariat.orgIt's not too late to turn back from the "Gates" of Hell... Linux: the FREE 32-bit operating system, available NOW. Why waaaaaait for NT?