Quote Originally Posted by Darrel Taylor View Post
Another silly question ...

Do you have a pull-up resistor on RA4?
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RA4 is connected in both my EasyPic6 development configuration and in my PCB prototype to the RS pin of the LCD. No Pull-up resistor is used in either case, and why do you ask?....from LCD data sheet the Register-Select is either 0 for command or 1 for data and therefore I didn't think it should have a pull-up resistor but should float free....am I wrong?