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Help---Set CPU_NSEC for MPC82G516A

Has any one used C51 c compiler from keil.
I compile MPC82G516A with c51 c compiler,but i do not know how to set CPU_NSEC.
if you know,please tell me ,thanks.

Best Regards.

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  • Important for whom?

    You don't give much information in your post.

    Google produces this random text - what is your view about it - about 8051 and CPU_NSEC:
    A standard wait-function has been added:
    void _wait_ms(unsigned int);
    This function will always wait a given time in msec. This is accomplished by a macro
    CPU_NSEC, which holds the 'mean instruction time' for a 1-cycle instruction in nsec (for a
    12 MHz generic 8051 this is 1000, which is the default too..., a 24 MHz generic 8051 would
    have 500).

    But that isn't for Keil C51, but for Wickenhäuser uC/51.

    Maybe, if you are so very stressed, you should invest a couple of minutes and actually write a very good post where you very clearly describe what problems you have, and what you have tried and where you are stuck.

  • i fixed it with the define like

    #define CPU_NSEC (12*1000*1000)

    thx for nothing people!!!

  • Always nice to see polite people...