interrupt pic programming in C

Which of the following method will avoid the microcontroller from tying down?

• Polling method

• Interrupt method

Give the name of interrupt in INTCON register.

• TMR0

• TMR1

• INT0

• INT1

Which of the following instruction will enable the TMR0 interrupt?

• INTCONbits.TMR0IF=1;

• INTCONbits.TMR0IF=0;

• INTCONbits.TMR0IE=1;

• INTCONbits.TMR0IE=0;

What memory address in the interrupt vector table is assigned to high-priority interrupts?

• 0x0008

• 0x0018

• 0x0080

• 0x0081

Which of the following instruction is used to disable all the interrupt.

• INTCONbits.GIE=0;

• INTCONbits.GIE=1;

• INTCONbits.GIEL=1;

• INTCONbits.GIEL=0;

The INT1IF bit belongs to the ___________________ register.

• INTCON

• INTCON2

• INTCON3

• PIR1

What is the function of this C instruction?

#pragma code My_HiPrio_Int=0x0008

void My_HiPrio_Int(void)

{

_asm

GOTO chk_isr

_endasm

}

#pragma code

• Transfer control to the ISR (Interrupt Sub-routine)

• Transfer control to main program

• Find source of interrupt

• All of the above

Is it true that "pragma", "code" and "intterupt" are reserved keyword?

• True

• False

PIC 16f877a is ____ pin IC.

• 28

• 16

• 32

• 40

PIC16F877A Microcontroller has _____ I/O pins.

• 32

• 33

• 35

• 5