I have a 4x40 LCD display with two enable signals.

I like to control this display with 4 bit data transfer,
when 1 made a program for just a 4x20 lcd display it works fine but i can't get any signal on a 4x40 LCD display.

Does sombody have a PICbasic sample program (with schematic (no must)) to control a 4x40 display?