Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hpda!hpcuhb!gupta
From: gupta@hpcuhb.HP.COM (Mayank Gupta)
Newsgroups: comp.arch
Subject: Re: looking for >32-bit address space
Message-ID: <3830004@hpcuhb.HP.COM>
Date: 3 Apr 89 16:16:55 GMT
References: <1032@myrias.UUCP>
Organization: Hewlett Packard, Cupertino
Lines: 25


>Are there any micros or chipsets out there that support an address space
>larger than 32 bits?  The current trend in micros seems to be toward 64-bit
>data paths but only 32-bit address paths.  In a large-scale parallel
>processor, this starts to feel a bit like a PDP-11.

It was gonna come around sooner or later.  HP saw this coming five years ago
when we developed our HP-PA (Precision arcitecture "RISC").  This gives you:

32 bit virtual and 32 bit physical addressing : Level 0 compliance.
48 bit virtual and 32 bit physical addressing : Level 1 compliance.
64 bit virtual and 32 bit physical addressing : Level 2 compliance.

with a very comprehensive memory management system, including levels (> 2) of
protection.

HP has been shipping 64 bit virtual address machines.  All of the above are
32-bit integer and IEEE compliant floating point machines.

Maybe you should contact a sales representative in your area.


Mike Gupta
gupta@hpesomg
408-447-0390