Hi Darin, Sorry - I didn't notice this back in January! Glad that you got it working :-) Yes, there is a problem with the graphics app "gr". This came about when I changed from 32 bit cell addressing to 8 bit addressing (for the entire cf system). This makes cf20xx compatible with every other Forth, but meant that I had to change several of the apps. The "gr" app is tricky because it has a lot of assembler code, and I just haven't found the time to fix it yet :-( One of my (many) backburner projects...