CS401 Quiz No.3 Shared by Amina

The interrupt handler uses_______ instruction to return back to the caller

 RET

IRET
RETI
INTR

Which of the following IRQS is used for sound card or network card

IRQ4

IRQ5

IRQ6

IRQ7

In programmable interrupt controller which of the following ports is used for selectively enabling or disabling
interrupts
19
20
21
22

Using OUT instruction on parallel port results into a signal of ____for every 1 bit

0V

1V

5V

10V

Which of the following IRQs is connected to serial port COM 1?
 IRQ 4
 IRQ 5
 IRQ 6
 IRQ 7

The output of programmable timer interval connected to which line of PIC

IRQ0

IRQ1

IRQ2

IRQ3

The source registers in OUT is ?

AL or AX

BL or BX      

CL or CX  

DL or DX    

Programmable interrupt controller has two ports 20 and 21. Port 20 is the control port while port 21 is...........
The Interrupt mask register
Interrupt port
Output port
Input port

Which of the following pins of parallel por are used to carry the data from processor to the device connected through parallel port

Pin 2 to 9

Pin 10

Pin 4

Pin 10 to 25