ISBNs beginnend mit 978-3-88963-xxx-xHans Ch Wagner × Hackerbook IMachine Language Subroutines - Tips + TricksHans Ch WagnerHofacker, WSoftcover1982 More on the Sixtyfour 64Centronics Interface. Recursive Programming, The Filesystem, RS232 Interface Realtime Clock, Terminal Program, the ACD CHans Ch WagnerHofacker, WSoftcover1983