Yes it does help!

To avoid two video channels is key to getting this program right.

With a 5 bit word there are 64 possible input patterns, mostly it will just be a logic '1' with it
just passing the data staight thro.

But it gets very interesting when several go off! That will need data translation based on the significance of the pattern.

IF A0 = 6 then PortB = 7 '4th video channel selected

etc

I'm not confident yet I've got the symbol/peek/poke syntax right. I've been posted the manual now, but feel very nervous about producing working code right now, so a code example would be brilliant!

Many thanks again for responding.



Tim