Article View: comp.arch
Article #22464Re: 64/32 bit processors - impending disaster?
From: Peter da Silva
Date: Tue, 13 Feb 1990 18:45
Date: Tue, 13 Feb 1990 18:45
19 lines
1352 bytes
1352 bytes
In article <1990Feb12.182411.5982@ico.isc.com> rcd@ico.isc.com (Dick Dunn)
writes that he expects 64-bit pointers before 64-bit integers...
> But 64-bit integer operations, particularly multiply/divide, are still sort
> of expensive...too expensive to justify the limited return. 32 bits is a
> big number.
On the other hand, there are chips extant for which 32-bit integer multiply
and divide are considered too expensive to put into silicon. I can see a
machine with 64-bit registers but only 32x32=64 multiplies without straining.
You'd probably have 32-bit ints and 64-bit long ints.
As you say...
> If this 64/32 split happens, it's not going to be a happy situation...
--
_--_|\ Peter da Silva. +1 713 274 5180. <peter@ficc.uu.net>.
/ \
\_.--._/ Xenix Support -- it's not just a job, it's an adventure!
v "Have you hugged your wolf today?" `-_-'
Technical Details
Message-ID:
<UPQ1:94xds13@ficc.uu.net>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!rpi!zaphod.mps.ohio-state.edu!lavaca.uh.edu!uhnix1!sugar!ficc!peterReferences:
<1990Feb12.182411.5982@ico.isc.com>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!rpi!zaphod.mps.ohio-state.edu!lavaca.uh.edu!uhnix1!sugar!ficc!peter From: peter@ficc.uu.net (Peter da Silva) Newsgroups: comp.arch Subject: Re: 64/32 bit processors - impending disaster? Message-ID: <UPQ1:94xds13@ficc.uu.net> Date: 13 Feb 90 18:45:31 GMT References: <1990Feb12.182411.5982@ico.isc.com> Reply-To: peter@ficc.uu.net (Peter da Silva) Organization: Xenix Support, FICC Lines: 14