Date   : Mon, 12 Dec 1994 14:34:45 GMT
From   : David Alan Gilbert <gilbertd@...>
Subject: Re: Snapper/Monsters/Rocket raid runs!

> ;FYI a p90 is a Pentium running at 90Mhz (turns an unpleasant shade of green)
> ;Is is one that's fixed? 
> 
> 
> 90MHz is quite a lot, I would have thought a beeb emulator would whizz along
> at that pace.

'Should' is the operative word - my emulator is slow - I need to do some SERIOUS
optimisations!.

> 
> ; Pentiums have an interesting fault in the fdiv
> ;instruction that means it's a little less accurate than it should be.
> 
> I've been following this closely in comp.sys.intel. If the fault is as bad
> some people are making it out to be, Intel are up shit creek. Naturally,
> they're playing the whole thing down. I don't think it's only confined to
> FDIV either...
> 
> ;(Intel asked a Pentium what 486+100 was and got 585.9997, so they changed
> ;the name :-)  Credit for that one goes to someone on a usenet group)

Yes - its a bit of a pisser - its only FDIV and possibly TAN - it only
keeps about 14 bits of precision.  But if thats a problem I can start up
the beeb emulator and get Beeb BASIC to do it :-)

Dave