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Thread: Encoding Opcodes ( Exercise question )

  1. #1
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    Question Encoding Opcodes ( Exercise question )

    Am doing the exercises in the first chapter of the book " JAVA PROGRAMMING - From the ground up"

    In the short exercises, 7th exercise, the question is "If there are typically 120 different opcodes and each opcode is represented by a string of bits, how many bits are required to uniquely encode or represent each opcode"

    To be plain here, i dont understand the question at all..

    I assumed the answer is 8 bits since each cell can only hold upto a byte.

    Thank you!
    Last edited by UniverseCloud; August 8th, 2017 at 06:10 PM.

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Encoding Opcodes ( Exercise question )

    I think the question is: How many bits does it take to hold a value of 120?
    2 bits can hold 4 different values
    how many bits for 120 different values?
    Its all power of 2.
    If you don't understand my answer, don't ignore it, ask a question.

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