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From: clif@intelca.UUCP (Clif Purkiser)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Large linear memory space for 80x86 machines ?
Message-ID: <116@intelca.UUCP>
Date: Tue, 20-Oct-87 18:26:47 EDT
Article-I.D.: intelca.116
Posted: Tue Oct 20 18:26:47 1987
Date-Received: Fri, 23-Oct-87 01:30:23 EDT
References: <668@rna.UUCP>
Organization: Intel Corp., Santa Clara, Ca.
Lines: 44
Summary: Solution to running large C programs on PCs

In article <668@rna.UUCP>, dan@rna.UUCP (Dan Ts'o) writes:
> 
> 	Sorry if this has been covered (it surely has) but...
> 
> 	What is the current state of large data array usage on 80x86 machines ?
> I want to write a (semi-real-time) C program that uses single data arrays that
> are 2-8Mb each. What about...
> 
> 	- Huge model on the MSC 4.0. Will this do the trick ? Sounds like it
> will but the speed penalty may be huge (heehee). One program I moved from
> small to large was slowed by 50%. But it may still be limited by the 640K
> of MSDOS.
> 
> 	- Running Xenix with protecte mode, possibility on a '386. Do any
> current or planned implementation of Xenix support such large linear address
> spaces ? How about virtual memory support ?
> 
> 	Any other ideas ? Thanks.

I think the best solution is to buy a 80386 PC or Intel 386 Inboard and
an PC AT.

Then purchase Pharlap DOS|extender product which allows programs to take
advantage of the 80386's large address space. 

For a C compiler by Metaware's High C-386 which supports 80386 "native 
mode" (i.e 4 gigabyte segments).

Phone numbers
Pharlap Software (617) 661 1510
MetaWare 	(408) 429-6382


Another possiblity is to buy Unix or Xenix 386 both support large
linear address spaces


-- 
Clif Purkiser, Intel, Santa Clara, Ca.
{pur-ee,hplabs,amd,scgvaxd,dual,idi,omsvax}!intelca!clif

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