Not just ProDOS is supported by the CFFA. Apple Pascal 1.3 works great because Apple added SmartPort device support in 1.3 (maybe 1.2?) Using my Apple II+ and CFFA in slot 5 (for SmartPort device configuration) I was able to format and copy all the Pascal files to the CFFA. I can boot straight into Pascal on the CFFA with PR#5. Now I can run what I feel is the most sophisticated IDE for the Apple II quite fast - kind of like Turbo Pascal. Look for my firmware modification post to see how it really flies now.
Dave...