I have been using HP-488 BOARD The thing is I have checked the LCD configuration, I am using start nibble RB0 ,1,2,3 for data means(LOWER NIBBLE) RB4 for RS RB7 for EN USING J19 AND J21 to change the default bits for LVP and LCD. Now in programming I am sending only 4 bits to PORTB. Previously only ...