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Cortex A8 Instruction Cycle Timing

barney vardanyan
Note: This was originally posted on 17th March 2011 at http://forums.arm.com

Hi) sorry for bad English

I need to count latency for two instruction, and all I have is the arm cortex A 8 documantation(charter 16) !
but I have no idea how can do this work using that documantation(
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    Note: This was originally posted on 25th May 2011 at http://forums.arm.com


    Dear Webshaker,
    I am thinking how to test the cycle count module of Cortex-A8.
    I think, for each instruction, I have to combine it with each other instruction to see how they work together.
    However, I got a problem. Because the number of instructions of Arm is too big, so the number of testcases is big too.

    Do you have other ideal for testing?


    I'll write a post to explain how works the cycle counter and how you can write your own cycle counter in few days (weeks)...
    That will be more more simple that triyng to explain part by part how the program works !!!

    But your solution is not a good solution... to much work !!!

    Etienne
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  • 0
    Note: This was originally posted on 25th May 2011 at http://forums.arm.com


    Dear Webshaker,
    I am thinking how to test the cycle count module of Cortex-A8.
    I think, for each instruction, I have to combine it with each other instruction to see how they work together.
    However, I got a problem. Because the number of instructions of Arm is too big, so the number of testcases is big too.

    Do you have other ideal for testing?


    I'll write a post to explain how works the cycle counter and how you can write your own cycle counter in few days (weeks)...
    That will be more more simple that triyng to explain part by part how the program works !!!

    But your solution is not a good solution... to much work !!!

    Etienne
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