I am driving a 44780 LCD display 4 bit data mode with an 18F1320 with in=20
the common way, the 4 data signals are driven by RB4 - RB7. Using a=20
PICKIT2 to program and debug the board. RB7 and RB6 are dual function=20
also as PGC and PGD. I get an error when trying to program or debug with=20
this setup. The error goes away  if I unplug the display ribbon cable.

The PICKIT2 manual shows resistors going th the application on these 2=20
signals, with the MCLR signal having "470 ohm*" resistor and below "=20
*Typical".  Should I interpret that, that my 2 resistors should be 470=20
ohm also? And will that drive the LCD OK? Or is there a better way of=20
doing this?

I do have a stand alone programmer, but the requires pulling the chip=20
each time. And pulling the ribbon cable each time isn't good either.

I do have spare 1320 pins and could move the LCD data pins to eliminate=20
the conflict, use a variable to do the shift 4 to send the other nibble,=20
but the programming gets a little messy.

Thoughts??

Thanking in advance. :)
--=20
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