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void rx_handler (void);//declare the ISR function.HIGH
void pull_chord (void);//declare the ISR function.LOW
//location of the ISR.(HIGH)
#pragma code rx_interrupt = 0x8
void rx_int (void)
{
_asm goto rx_handler _endasm
}
#pragma code //return to default code section
//location of the ISR.(LOW)
#pragma code low_pull = 0x18
void low_pull (void)
{
_asm goto pull_chord _endasm
}
#pragma code //return to default code section
Be careful. Interrupt preemption is not a good practice especially in C. It eats memory and usually does not provide any performance benefits.