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read write on code memory in 8051 using C

amey deshpande

I am using P89v51rd2.

I want to store only one variable in the code memory,
so that it is stored permanently. (say a=9999; max)

I want to update this frequently in the program, and read when
required.

can anyone provide me the code for the same ?

thank you...

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  • 0 in reply to ImPer Westermark

    Checkpointed write transactions to non-volatile memory are used on some systems that lack adequate power-fail notification. A "record" is either written in its entirety before power fails or a partial write is "rolled back" during power-up recovery.

    Some keywords to Google.

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  • 0 in reply to ImPer Westermark

    Checkpointed write transactions to non-volatile memory are used on some systems that lack adequate power-fail notification. A "record" is either written in its entirety before power fails or a partial write is "rolled back" during power-up recovery.

    Some keywords to Google.

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