Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!agate!eos!amelia!serafini
From: serafini@amelia.nas.nasa.gov (David B. Serafini)
Newsgroups: comp.arch
Subject: Re: 64-bit addresses
Summary: Cray address size 32 bits
Message-ID: <4977@amelia.nas.nasa.gov>
Date: 21 Feb 90 05:14:39 GMT
References: <9708@spool.cs.wisc.edu> <1990Feb9.235927.5984@ultra.com>
Reply-To: serafini@amelia.nas.nasa.gov (David B. Serafini)
Organization: NASA Ames Research Center, Moffett Field, CA
Lines: 22

In article <1990Feb9.235927.5984@ultra.com> ted@ultra.com (Ted Schroeder) writes:
>
>Use a Cray, they've got 64 bit addressing now.
>

Not quite.  Cray Y-MP's, 2's and the last of the X's all have 32 bit addresses.
For various implementation reasons, none of them can actually have more than 
2^29 words of memory.  The older X's and 1's had 24 bit addresses.

>      Ted Schroeder                   ted@Ultra.com
>      Ultra Network Technologies      ...!ames!ultra!ted
>      101 Daggett Drive           
>      San Jose, CA 95134          
>      408-922-0100
>
>Disclaimer:  I don't even believe what I say, why should my company?

David B. Serafini			serafini@ralph.arc.nasa.gov
Rose Engineering and Research

Disclaimer: I don't speak for the U.S. Govt, but unfortunately they sometimes
speak for me.