Is it possible that such a PD beast exists ... other 8 bit micros have them - why not this one? thanks --jon ARPA : j.g.hall at newcastle.ac.uk JANET: j.g.hall at uk.ac.newcastle UUCP : ...!ukc!newcastle.ac.uk!j.g.hall PHONE: +44 91 222 7957 SNAIL: Computing Laboratory, University of Newcastle upon Tyne, UK, NE1 7RU