Hi to all that offerred help. Much appreciated. I picked up some tips
from the code examples and was able to simplify my own code as a result.

In my routine that sends the initialization instructions, I send these
values...

_lcd    addwf PCL
        retlw 30h       ; (128) display initialisation
        retlw 30h       ; initialize page 45 of the data sheet
        retlw 30h       ; initialize
        retlw 20h       ; 4 bit initialise

        retlw 28h       ; 4 bit display two line font 0
        retlw 08h
        retlw 01h       ; clear display
        retlw 06h       ; increment display
        retlw 0ch       ; display = on, cursor = off

These are as per the data sheet.

Each value is tested and when it gets to 28h, a flag is set and the
routine sends the data in 4 bit mode from now on.

I used "xorlw 28h" to test for the value, but I forgot to restore it
back to it's original state before passing it to the LCDins code. Thus I
was sending garbage to the init code.

One thing I never realised before was that I can set the RW pin
permanent low and save a PIC pin because I am not interested in reading
from the device.

Now on to the fun stuff...

Thanks again :-)

--
Best regards

Tony

ICmicro's
http://www.picnpoke.com
mailto:sales@picnpoke.com

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