Designing around a 6502 (was Re: Assembly on a Apple IIc+)

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From: Bill Sudbrink <wh.sudbrink_at_verizon.net>
Date: Sun Feb 9 17:22:22 2003

> This gives me awfully devious ideas... First, were there any 'multitasking
> machines' designed around the 6502? If you wanted to do multitasking, it
> seems like you could design a fairly simple MMU that would swap out the
> zero-page and stack (or all of the memory pages) for different ones,
> depending on the running task. Leaving only a few registers that need to
> be saved, it would leave a very small overhead for task swapping.

Ohio Scientific OS-65U.
Received on Sun Feb 09 2003 - 17:22:22 GMT

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