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Thread: Advance Computer Architecture - CS501 assignment no 5 idea solution

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    Icon14 Advance Computer Architecture - CS501 assignment no 5 idea solution

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    Question No 1
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    Consider a floppy drive having a transfer rate of 48 KB per second is attached to a 32 bit, 10MIPS CPU using an interrupt driven interface. The drive has 16-bit data bus.


    Suppose that the interrupt overhead is 10 instructions. Calculate the fraction of CPU time required to service this drive when it is active.
    Question No 2
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    A hard disk with 10 platters has 512 tracks per platter, 512 sectors per track and 512 bytes/sector. What is the total capacity of the disk?
    Question No 3
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    How many platters are required for an 80GB disk if there are 2048 bytes/sector, 2048 sectors per track and 2048 tracks per platter?
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    Q.1 SOLUTION:

    The floppy drive has a 16-bit data bus; it can transfer two bytes at one time.
    Its transfer rate is 48/2 = 24K per second.
    This corresponds to an overhead of 10 instructions
    or 24K x 10 = 24 x 210 x 10 = 245760 instructions per second.

    Q.2 SOLUTION:

    512 bytes x 512
    Sectors=0.2MB/track
    0.2MB x 512 tracks
    =0.1GB/platter
    so the hard disk has the total capacity of 10 x 0.1=1GB


    Q.3 SOLUTION:

    The capacity of one platter
    = 2048 x 2048 x 2048
    = 8GB
    For an 80GB hard disk, we need 80/8
    = 10 such platters.

  3. #3
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    Thanks for sharing this solution \

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    your 3rd question is wrong

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    correct the 3rd question

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