Hello all, On holiday I convinced my parents. I could take my 83+ with me. A miracle! Well, I took ti83plus.inc and some z80 reference with me and began to study the ti83plus.inc. I found a _KeyToString bcall! While trying to use it with 'a' as _getkey-in and 'a' as string-out my calc crashed. Is there some way to do convert a key to a string with this bcall? Thanx, Ronald.