Hi-

O.K. Just a thought.  I'm not sure what the "other" interfaces are like.  I *DO*
know that my R/S line on this display was "funny" and had to be pulled down from
an open drain connection.  Opps, that one was a little 16X2 "no name" that I had
using the open drain of RA4 (for the 16F628).  Until I pulled it down (and yes,
I had a pullup on the open drain, I had "interesting" times with it).  

See what happens when you don't have your data sheets with you?

  Cheers,

   Rich S.

---- Original Message ----
From:		Jinx
Date:		Tue 6/12/07 17:16
To:		Microcontroller discussion list - Public.
Subject:	Re: [PIC] Interfacing to a Hitachi 44780 LCD in 4-bit mode

> by pulling the unused data lines (up or down

A genuine 44780 has internal pull-ups

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