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A comment on Installing A/UX on the Quadra 610 (2018). Parent comment

Re:Installing A/UX on the Quadra 610 (2018) by ch_123 on Wednesday December 25, 2019 @09:30PM (#21881704)
> I wonder how an A/UX with memory protection and preemptive multitasking would fare today.

I believe A/UX had both of these things, although it ran all the System 7 applications inside a single address space. I suspect that without this measure, many native Mac apps would not have worked.

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Re:Installing A/UX on the Quadra 610 (2018) by pvg on Wednesday December 25, 2019 @09:32PM (#21881714)
I think apps could also be ported (mostly just recompiled?) to run in separate address spaces. So you could have a Mac app that was its own A/UX process.

This seems to have some details:

http://basalgangster.macgui.com/RetroMacComputing/The_Long_V...

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