Hi DirtBiker.
Glad it's working for you.
Yeah, your friend is free to make a shield or whatever - glad it's of use. Obviously, no charging for my code, and a link to my original page please 
I received the NTSC (AY-3-8500-1) version of the chip yesterday. I've been so busy at the moment that I haven't tried it yet, so hopefully in a few days power it up and I'll super-impose the original and my versions to see if any values need tweaking. I'll update when ready.
On free web hosting, so unfortunately sometimes the server is unavailable. If there is a problem loading any of my pages then please try again in a while/next day.
All the best.
Grant