>  I'm sure there is a trap in reading the busy flag in 4-bit mode.  You
>must read the data twice every time (which means you must keep things in

This is true.  It isn't hard, just be careful and it works fine.

When I was working on this for my C library to sell, I made it work by
providing low-level routines which always returned the full 8 bits, whether
working on 8-bit or 4-bit mode.

Andy

==================================================================
 Eternity is only a heartbeat away - are you ready?  Ask me how!
------------------------------------------------------------------
andy@rc-hydros.com      http://www.rc-hydros.com     - Race Boats
andy@montanadesign.com  http://www.montanadesign.com - Electronics
==================================================================