questions

Discussion in 'VHDL' started by gda, Oct 4, 2004.

  1. gda

    gda Guest

    1.which is better for processor architecture design and why? external
    RAM or internal RAM?

    2.which is better for processor architecture design and why? external
    ROM or internal ROM?

    3.what is the advantages and disadvantages of simple processor with
    pipelining and without pipelining?
     
    gda, Oct 4, 2004
    #1
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  2. gda

    ALuPin Guest

    >
    > 3.what is the advantages and disadvantages of simple processor with
    > pipelining and without pipelining?


    one advantage: Because of partitioning the logic task into several stages
    the timing of your circuit can be improved.

    one disadvantage : Latency is introduced by the use of the pipelining stages.

    Rgds
     
    ALuPin, Oct 4, 2004
    #2
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  3. gda

    Jeroen Guest

    "ALuPin" <> wrote in message
    news:...
    > >
    > > 3.what is the advantages and disadvantages of simple processor with
    > > pipelining and without pipelining?

    >
    > one advantage: Because of partitioning the logic task into several stages
    > the timing of your circuit can be improved.
    >
    > one disadvantage : Latency is introduced by the use of the pipelining

    stages.

    There are more disadvantages to pipelining, like datahazards, the need to
    flush the pipeline when the flow of the execution changes etc. There is
    additional logic needed to cover these situations. On opencores.org there is
    a design of an AVR compatible core which includes a very in-depth discussion
    of pipelining.

    Jeroen
     
    Jeroen, Oct 4, 2004
    #3
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