Path: utzoo!attcan!uunet!cs.utexas.edu!sun-barr!apple!phil
From: phil@Apple.COM (Phil Ronzone)
Newsgroups: comp.sys.mac.programmer
Subject: Re: System 7.0 Q & A -- memory protection (none)
Message-ID: <31341@apple.Apple.COM>
Date: 22 May 89 19:20:07 GMT
References: <1838@internal.Apple.COM> <7320@hoptoad.uucp> <1906@internal.Apple.COM> <7350@hoptoad.uucp> <364@taniwha.UUCP> <7357@hoptoad.uucp> <31132@apple.Apple.COM> <7383@hoptoad.uucp>
Organization: Apple Computer A/UX Group
Lines: 29

In article <7383@hoptoad.uucp> tim@hoptoad.UUCP (Tim Maroney) writes:
>In article <31132@apple.Apple.COM> phil@Apple.COM (Phil Ronzone) writes:
>>Tim, Paul is correct. A/UX uses the exact same ROM as the Mac OS. And boy,
>>does it run in 32-bit mode. Stacks, heaps, the video RAM, the mapped in
>>address of the ROM, they are all over the place (i..e, not just in the
>>first 16MB of address space). I.e., even now the ROMs are dealing with
>>a 32-bit world.
>
>Then why does the seventh question and answer under "32-Bit Addressing"
>in the "Developer Conference Q&A" in the current developer mailing say
>that a ROM upgrade will likely be required to run in 32-bit mode?  Also,
>do A/UX applications running in 32-bit mode make calls to the various
>parts of the Toolbox that are needed by MacOS applications, such as the
>resource manager?

I don't know. A/UX does "patch" and in places replace various pieces of
code. (Such as the file manager -- gotta use the UNIX filesystem ...).
In general, A/UX can and does make calls to all of the toolbox that makes
sense (i..e, not the device manager).

Next time I see Rick Daly I'll see if he'll post a more detailed answer.

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