$//$ Main thread

$//$

$//$while $(1)\{//1$ cycle to loop

$//$ if $(1==*$pProcessInterrupt$)\{//1$ cycle to check the flag

$//$ process$()$; $//93$ cycles to run the processing

$//*$pProcessInterrupt $=0$; $//1$ cycle to set the flag back to $0$

$//\}//$ assume $0$ cycles for this line

$//\}//$ assume $0$ cycles for this line

$//$ Assume $1$ cycle to transition to the interrupt

$//$void interrupt$\_$handler$()\{$

$////$ interrupt takes $2$ cycles

$//*$pProcessInterrupt $=1$;

$//*$interruptPending $=0$;

$//\}//$ Assume $1$ cycle to transition back to the main program