IIRC the micro kernel which added MP support came in 8.6 | Hacker News

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		kalleboo on Jan 25, 2015 \| parent \| context \| favorite \| on: Building Classic Mac OS Apps in OS X IIRC the micro kernel which added MP support came in 8.6

kalleboo on Jan 25, 2015 [–]

*nanokernel http://en.wikipedia.org/wiki/Mac_OS_nanokernel

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