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help!!

vignesh n

hi!

my c-progarm complies for 89c51 ..but wen i use d same code for 89f51rc by changing d header file, i get an error.

C:\KEIL\C51\INC\ATMEL\REGF51RC.H(29): error C231: 'TL2': redefinition

.i m new to keil, plz help..
also i wanna know difference between

P0^0 and P0_0 .

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