The ADD instruction adds a byte value to the accumulator and stores the results back in the accumulator. Several of the flag registers are affected.
ADD A,B ADD A,Rn
;Adds contents of Destination with contents of A and the result is stored in A ADD A,B ;1 byte 1 cycle ADD A,#30h ;2 bytes 1 cycle ADD A,20h ;2 bytes 1 cycle ADD A,Rn ;1 byte 1 cycle ADD A,@Ri ;1 byte 1 cycle