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CS609 System Programming Quiz no 1 Spring 2013

In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.

Which of the following register is used, if you want to block access of any Hardware

If printer is _____ then printer sends back the ACK signal to the printer interface

Select correct option:

idle

busy

Out of paper

None of the given

n counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles

Select correct option:

 

1

2

4

16

At IRQ 7 Interrupt # ___ is used.

Select correct option:

0x0A

0x0B

0x0C

x0F

Total No. of bytes that can be stored in Keyboard Buffer is____.

Select correct option:

16

32

64

128

The ______ service # is not used in any interrupt.

Select correct option:

01

02

03

FF

if the following function, keep(1, 1000); is called in the TSR program, it means that ________ No. of bytes are reserved in the memory.

Select correct option:

  8000

16000

32000

64000

____ No. of bytes are used to store the character in the key board buffer.

Select correct option:

1

2

4

8

In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles

Select correct option:

1

2

4

16

 

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