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Advance Computer Architecture (CS501)
Assignment # 04(GRADED)
Total marks = 20
Deadline Date = 10-February-2016
Please carefully read the following instructions before attempting the assignment.
Assignment Guidelines:
It should be clear that your assignment would not get any credit if:
 The assignment is submitted after due date.
 The submitted assignment does not open or file is corrupt.
 The assignment is copied. Note that strict action would be taken if the submitted assignment is copied from any other student. Both students will be punished severely.

1) You should consult recommended books to clarify your concepts as handouts are not sufficient.
2) You are supposed to submit your assignment in .doc or docx format. Any other formats like scan images, PDF, Zip, rar, bmp etcwill not be accepted.
3) You are advised to upload your assignment at least two days before due date.

Important Note:
Assignment comprises of 20 Marks. Note that no assignment will be accepted after due date via email in any case (whether it is the case of load shedding or emergency electric failure or internet malfunctioning etc.). Hence, refrain from uploading assignment in the last hour of the deadline, and try to upload Solutions at least 02 days before the deadline to avoid inconvenience later on.
For any query please contact: CS501@vu.edu.pk
Objective:
The objective of this assignment is to assess the understanding of,
 Polling loop
 Interrupt driven I/Oand Direct Memory Access (DMA)
 Magnetic Disk Drives

Question#01:
What percentage (%) of the time will a 10 MIPS CPU spend in the busy wait loop of an 50- character line printer, when it takes 1msec to print a character and a total of 415 instructions need to be executed to print an 50character line. Let us assume that, threeinstructions are executed in the polling loop.

Question#02:
A CD-ROM drive with a maximum transfer rate of 2Mbyte/sec is connected to a 64-bit, 20MIPS CPU operating at a clock frequency of 300MHz.Suppose that, the I/O interface is DMA(Direct Memory Access) based and it takes 200 clock cycles for the CPU to set-up the DMA controller. Further, assume that the interrupt handling process at the end of the DMA transfer takes an additional 400 CPU clock cycles. If the data transfer is done using 8 KB blocks, calculate the percentage of the CPU time consumed in handling the CD-ROM drive.

Question#03:
How many platters are required for a 120 GB disk if there are 2048 bytes/sector, 3072 sectors per track and 5120 tracks per platter?

Good Luck


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requset to all member please share solution

kindly visit handsout...... all examples about these quizs has been already discussed

Assalm o ALaikum
1st Qstn ka Ans lec 30 Page nmbr 345 main hai
2nd qstn ka Idea lec 31 Page nmbr 353 py main hai
3rd qstn ka Idea lec 32 page nmbr 360 py hai.........
Solve khud kroo
Goood Luck

solution

itna to khud bhi kro lo 

idea to mil gyia na solve kro khud 

Thanks Asma great Help

u r most welcome Asfand bro 

Best of luck

thyx

Ye lo Full solution and enjoy karo

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Thanksss Bilal BRo

u welcome Asma

1st Question ki samj ni aai ?

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