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CPUK

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CPUK is the S-SMP's clock signal, which oscillates at 2.048 MHz with a 50% duty cycle. It is produced by pin 48 of the S-DSP and goes into pin 16 of the S-SMP. It does not connect to anything else.

The official dev manual has a typo that states that the speed is 2.48 MHz. [2]

See Also

External Links

  1. https://archive.nes.science/nesdev-forums/f12/t10458.xhtml
  2. Page 3-1-1 of Book I of the official Super Nintendo development manual
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