Recent questions tagged interrupts

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1

I/O operation
Please Explain Every Point :) Ans. All are Correct

asked 4 days ago in CO & Architecture by Na462 Active (4.5k points) | 10 views

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2

Interrupt
1)What is difference between internal interrupt and software interrupt? 2) What is difference between external interrupt and hardware interrupt?

asked Jul 26 in Operating System by srestha Veteran (91.8k points) | 18 views

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3

Interrupt Driven I/O
Consider a system employing interrupt driven I/O for a particular device that transfer data at an average of 8 KB/sec on a continuous basis. Consider interrupt processing takes about 100 μsec i.e. time to jump to ISR, execute it and return to main program. The ... /O device if interrupts occur for every byte is ________. [Assume 1 K = 1024] (Upto 2 decimal places) Ans. 0.81

asked Jul 25 in CO & Architecture by Na462 Active (4.5k points) | 20 views

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4

Vectored Interrupts
Are Vectored Interrupts possible in CPU having single Interrupt Request line? How/Why not?

asked Jun 2 in CO & Architecture by Harsh Kumar Junior (587 points) | 37 views

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1 answer

5

I/O Interface
State whether the following statement is TRUE or FALSE and why ? In a microprocessor-based system, if a bus (DMA) request and an interrupt request arrive simultaneously, the microprocessor attends first to the bus request.

asked May 4 in CO & Architecture by ankitgupta.1729 Loyal (6.6k points) | 89 views

+7 votes

4 answers

6

GATE2018-9
The following are some events that occur after a device controller issues an interrupt while process $L$ is under execution. P. The processor pushes the process status of $L$ onto the control stack Q. The processor finishes the execution of the current ... based on the interrupt Which of the following is the correct order in which the events above occur? QPTRS PTRSQ TRPQS QTPRS

asked Feb 14 in Operating System by gatecse Boss (18.1k points) | 1.5k views

+2 votes

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7

Gateforum Tests
Can anybody explain in brief how to solve such numericals.

asked Jan 15 in CO & Architecture by vishal chugh Active (1.7k points) | 104 views

+1 vote

1 answer

8

Test Series

asked Jan 13 in CO & Architecture by vishal chugh Active (1.7k points) | 54 views

+3 votes

1 answer

9

Address after Halt instruction
Consider that the memory is byte addressable with size 16 bits, and the program has been loaded starting from memory location (2000)10. What will be the return address saved in the stack, if an interrupt occurs while the CPU has been halted after executing the HALT instruction? I am getting 2018.

asked Jan 2 in CO & Architecture by Shubhanshu Boss (15.1k points) | 226 views

+1 vote

1 answer

10

Interrupts
In case of Vectored interrupts,the I/o device send the vector address along with the I/o request or does it sends after it receives ack/INTA from CPU?

asked Dec 10, 2017 in Operating System by rahul sharma 5 Boss (24.5k points) | 67 views

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1 answer

11

Operating system:- Interrupts
when the interrupt occurs ,then a: process switching may be there b: context saving must be there c: both a and b d.None of these

asked Dec 8, 2017 in Operating System by rahul sharma 5 Boss (24.5k points) | 161 views

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1 answer

12

memory address saved on stack after interrupt

asked Dec 2, 2017 in CO & Architecture by Tuhin Dutta Loyal (7.9k points) | 215 views

+3 votes

1 answer

13

Interrupt
GATE -2009 A CPU generally handles an interrupt by executing an interrupt service routine As soon as an interrupt is raised. By checking the interrupt register at the end of fetch cycle. By checking the interrupt register after finishing the execution of the ... am having confusion between option A and C... For hardware interrupt option A is suitable and for software interrupt option C

asked Oct 26, 2017 in CO & Architecture by #Rahul (351 points) | 199 views

+3 votes

1 answer

14

Non vectored interrupt.
In non vectored interrupt, the address of ISR is a) assigned to fixed memory location b) obtained from interrupt vector table c) none of the above

asked Aug 28, 2017 in CO & Architecture by Xylene Active (3.8k points) | 401 views

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15

NPTEL
Which of the following does not interrupt a running process? 1. A device 2. Timer 3. Power Failure 4. None of the above

asked Aug 23, 2017 in Operating System by gulsanchouhan (463 points) | 158 views

+1 vote

1 answer

16

Interrupt I/O|Made Easy test Series
The solution says that the answer should be 80, but applying the formula (x/y)*100, where x is 250 and y is 200 fraction comes out to be greater than 1. Am i making a mistake in interpreting x and y here?

asked Jul 8, 2017 in CO & Architecture by kimaya (61 points) | 207 views

+1 vote

1 answer

17

[COA] I/o Organization
Consider the following statements:- 1. Change program counter value 2. Change page table register context 3. Disable interrupt 4. Initiate I/o on a disk using memory mapped I/o which of the above can be executed in only in system mode? a.) 1,3,4 b)2,3,4 c.)1,2,3 d)2,4,1 Please give valid explanation with your answer.

asked May 27, 2017 in CO & Architecture by rahul sharma 5 Boss (24.5k points) | 155 views

0 votes

1 answer

18

[CO}Vectored interrupt
1. In case of vectored interrupt ,the i/o device will send vector address and then using this vector address,the IVT is referred which gives ISR address and then ISR is executed.So,the address that the I/o supplies is not the ISR ... fixed entries for ISR irrespective of vectored/non-vectored intrrupts? Is my understanding correct? Please correct me if i am missing anything?

asked May 18, 2017 in CO & Architecture by rahul sharma 5 Boss (24.5k points) | 247 views

+7 votes

2 answers

19

COA DMA doubt
What is formula for % of time CPU gets blocked?? Is it X(X+Y) or X/Y only??? What is formula for % of time CPU is consumed in Interuppt driven IO??? Formula for % of CPU slow down in interrupt driven IO???

asked Feb 6, 2017 in CO & Architecture by Rahul Jain25 Boss (11.5k points) | 1.9k views

+1 vote

3 answers

20

Interrupt I/O
Consider a system employing interrupt driven input/output for a particular device that transfers data at an average of 16 KB/s on a continuous basis. Assume that interrupt processing takes 50 μsec (i.e., the jump to the interrupt service routine (ISR), ... of processor time is consumed by this input/output device if it interrupt for every byte is _______ (Upto 3 decimal places).

asked Feb 2, 2017 in CO & Architecture by Pankaj Joshi Active (3k points) | 936 views

+2 votes

3 answers

21

INTERRUPTS AND SYSTEM CALLS
A CPU has 2 modes, privileged and non-privileged. In order to change the mode from previledged to non-previledged a) A hardware interrupt is needed b) A software interrupt is needed. c) A privileged instruction is needed. d) A non-privileged instruction is need.

asked Jan 4, 2017 in Operating System by sushmita Boss (13.6k points) | 160 views

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22

interrupt
Whenever a interrupt generates..mode changes(user to kernel mode)?

asked Dec 19, 2016 in CO & Architecture by vaishali jhalani Loyal (5.8k points) | 71 views

+10 votes

4 answers

23

GATE1990-4-ii
State whether the following statements are TRUE or FALSE with reason: The data transfer between memory and $I/O$ devices using programmed $I/O$ is faster than interrupt-driven $I/O$.

asked Nov 24, 2016 in CO & Architecture by makhdoom ghaya Boss (40.1k points) | 840 views

+1 vote

2 answers

24

GATE1987-2a
State whether the following statements are TRUE or FALSE In a microprocessor-based system, if a bus (DMA) request and an interrupt request arrive sumultaneously, the microprocessor attends first to the bus request.

asked Nov 9, 2016 in CO & Architecture by makhdoom ghaya Boss (40.1k points) | 303 views

+6 votes

1 answer

25

GATE1987-1-viii
On receiving an interrupt from a I/O device the CPU: Halts for a predetermined time. Hands over control of address bus and data bus to the interrupting device. Branches off to the interrupt service routine immediately. Branches off to the interrupt service routine after completion of the current instruction.

asked Nov 8, 2016 in CO & Architecture by makhdoom ghaya Boss (40.1k points) | 547 views

0 votes

1 answer

26

Operating System
Difference between with clear example Hadrware Interrupt, External Interrupt Software Interrupt, Internal Interrupt

asked Oct 19, 2016 in Operating System by srestha Veteran (91.8k points) | 224 views

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0 answers

27

Interrupts Mode Shifting
When compiler finds there is a System Call then what are the activitites taking place ? Activities involved in Mode shifting process from user to kernal mode and back.

asked Oct 7, 2016 in Operating System by pC Boss (22.1k points) | 129 views

+6 votes

2 answers

28

Computer Architecture --> Interrupt Driven I/O

asked Aug 30, 2016 in CO & Architecture by Kapil Veteran (50.1k points) | 937 views

+2 votes

1 answer

29

UGCNET-Dec2015-III-6
A CPU handles interrupt by executing interrput service subroutine ____ by checking interrupt register after execution of each instruction by checking interrupt register at the end of the fetch cycle whenever an interrupt is registered by checking interrupt register at regular time interval

asked Aug 9, 2016 in Others by jothee Veteran (99.8k points) | 280 views

+1 vote

2 answers

30

UGCNET-Dec2014-III-02
For switching from a CPU user mode to the supervisor mode following type of interrupt is most appropriate Internal interrupts External interrupts Software interrupts None of the above

asked Jul 24, 2016 in Operating System by makhdoom ghaya Boss (40.1k points) | 668 views

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