Hi, I will use a 4-bit LCD with 8051. But there is a problem, LCD's data pins are connected in reverse order. i.e. D7 to P2^0 D6 to P2^1 D5 to P2^2 D4 to P2^3 My previosly written program uses a port called Data which is defined as #define Data P2 Now i want to simple change the "Data" definition with reversed ordered P2 pins, without changing the program itself. How can i do this?