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 Post subject: cpu and ppu parallelism
PostPosted: Tue Aug 23, 2005 6:35 pm 
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Joined: Sat Nov 13, 2004 10:12 pm
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Location: Delaware, US
I don't really know how to phrase this question....but how parallel are the cpu and ppu?

Are their clocks synchronized or independent? In other words, on NTSC, CPU Cycle 1 = PPU Cycle 1, CPU 2 = PPU 4, etc. always in that pattern, or are they in sort of a race condition?

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PostPosted: Tue Aug 23, 2005 7:12 pm 
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Joined: Mon Sep 20, 2004 6:04 am
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Location: Indianapolis
They are synchronized. Main system clock speed is 21.47Mhz.

CPU is 21.47Mhz / 12 = 1.789Mhz
PPU is 21.47Mhz / 8 = 2.68Mhz


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