In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote:

Rob,
  Using SXSim, you interrupt takes about 69 cycles.  And it runs every 100 cycles.
  So the interrupt is using 69% of the clocks, that leaves 31% of the clocks for the foreground code.
  31% of 50MHz = 15,500,00

  Since your interrupt code doesn't use any of the __PARAMx variables, you would use alot less cycles is you used "INTERRUPT NOPRESERVE 500_000"
  Then your routine would only take 31 cycles of every 100. Leaving 69% for foreground code.
  69% of 50MHz = 34,500,000

Bean

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