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Lookup table in C

lina t

To make a lookup table in c,I've tried like this 

static code unsigned char T[]={0X01,0X02,0X03};
.But is it possible to prepare one as we do in assembly.
org 3000h
db 01h,02h,03h
i.e assigning some address to the variable T in the example given above.

Thanks,
Lina

  • 0

    "i.e assigning some address to the variable"

    No, it isn't.
    You can fix the address (see the _at_ keyword in the Manual), or you can have initialisation - but not both!

    If you really need to fix the location of the table, you must either do it in assembler, or use Linker controls.
    It's beed discussed ad nauseam - just try a search for "_at_"

  • 0

    But is it possible to prepare one as we do in assembly.

    org 3000h
    db 01h,02h,03h


    Absolutely

    .h for C modules
    code unsigned char T[];

    .a51
    PUBLIC T

    ...
    org 3000h
    T: db 01h,02h,03h

    Erik