Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!justin
From: justin@Apple.COM (Justin Walker)
Newsgroups: comp.unix.aux
Subject: Re: CD ROMs, graphics accellerators, memory management & AUX
Message-ID: <41949@apple.Apple.COM>
Date: 15 Jun 90 00:13:40 GMT
References: <8663@uswat.UUCP>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 51

In article <8663@uswat.UUCP> russell@uswat.uswest.com (Russell Greenlee) writes:
>I have three short but not simple questions for you AUX wizards out
>there:
>
>2. Others in this forum have said that Apple's 8/24 GC graphics
>accellerator will not work with AUX 2.0. Does this mean that the card
>is totally inaccessible from AUX? Or can it still be used without the
>accellerator capability? Does anyone at Apple know when we might see
>this accellerator working under AUX?
	The card is accessible from and works with A/UX 2.0.  However, since
	the accellerator "knows" what the internal structure of MacOS memory
	looks like, it can't be used with A/UX in accellerated mode.  A/UX
	kernel memory bears little relation to that of MacOS.  When this will
	be "fixed" is unclear (to me).

>
>3. I have heard that unlike AUX 1.1.1, AUX 2.0 unix applications that
>use the toolbox must use Mac OS memory management (i.e. handles in a
>fixed 8 meg heap) instead of unix memory management. Is this true?
	Well, yes and no.

	This is true for those chunks of memory that you hand to the Toolbox
	(either directly or indirecly).  For memory areas that the Toolbox
	never has to touch, stack or malloc() allocation works jes' fine.

	The heap is not a fixed size, but is configurable up to 16 MB
	(necessary to avoid the inevitable 32-bit uncleanliness (:-}).
	The default is your physical memory size.

>Thanks in advance for your help.
>
>
>Russell Greenlee
>U S WEST Advanced Technologies
>russell@uswest.com

Regards,

Justin

Justin C. Walker, Curmudgeon-At-Large   (justin@apple.com) *
A/UX Group                              *------------------|
Apple Computer, Inc.                    |  When meetings are outlawed,
10440 Bubb Rd,                          |    Only outlaws will have meetings
Cupertino, CA 95014                     *
-- 
Justin C. Walker, Curmudgeon-At-Large   (justin@apple.com) *
A/UX Group                              *------------------|
Apple Computer, Inc.                    |  When meetings are outlawed,
10440 Bubb Rd,                          |    Only outlaws will have meetings
Cupertino, CA 95014                     *