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

Hi Sparks;

Sure, subroutines can be called while in ISR..... the ISR stack is not the same as the subroutine stack, hence there is no interference.

What 'electronic' was asking, could one RETURN (permanently) from an interrupt to a place different  from where the interrupt originated. And the answer is YES, but with some caution and some issues.

Cheers,

Peter (pjv)

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