Andy Neil wrote:
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However, you should also note that trying to do register-level calculations in 'C' is not guaranteed to succeed!
If you specifically need to load a value into the Accumulator, and then immediately test the PSW Parity bit (as in your example) you'd be better off doing it in assembler.

Thanx Andy, does this mean I have to do it in assembly or shall i be quite about it for now coz the program worked ?
Maybe when i have some more time i will look into how to integrate assembly in keil c and re do it.