Somehow now (when most peripherals have embedded
processors which could be
called PPUs) we seem to have stopped using the term.
I think the term disappeared with the microcomputer age. Intelligent
peripherals like, say, the Commodore 1541 were always considered to have CPUs,
not PPUs (especially since the CPU in that particular disk drive was almost
exactly the same as the one in the host).
To NES programmers, PPU means something else entirely (
http://en.wikipedia.org/wiki/Picture_Processing_Unit
).
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Cameron Kaiser * Floodgap Systems *
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