Burroughs B5000
An option on the Burroughs B5000 was “Processor B”. This second processor, unlike “Processor A” had no connection to the peripherals, though the two processors shared main memory. The operating system ran only on Processor A. When there was a user job to be executed, it might be run on Processor B, but when that job tried to access the operating system the processor halted and signaled Processor A. The requested operating system service was then run on Processor A.
Read more about this topic: Asymmetric Multiprocessing
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“I think there are innumerable gods. What we on earth call God is a little tribal God who has made an awful mess. Certainly forces operating through human consciousness control events.”
—William Burroughs (b. 1914)