In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Peter Van der Zee wrote:

Hi Bean;

Something you may not be aware of because it's not really dealt with in the SX documentation, and that is anytime you do a write, or read-modify-write, to the RTCC, it "eats" 3 clock cycles. So if your trick writes to the RTCC - and I suspect CLR RTCC might fall into that category but needs to be confirmed- then you need to account for those 3 cycles.

And in testing this, please be careful, as the debug IDE will not show the proper count....... if I recall correctly, it is out by one.

Cheers,

Peter (pjv)

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