1. RCA Corporation,COS/MOS Digital Integrated circuits. Somerville, New Jersey, 1975.
2. Memodyne Corporation,Technical Manual 100 Series Tape Transports and Recording Systems, Memodyne Corporation, Newton Upper Falls, Massachusetts, 1974.
3. The circuit diagram is too extensive for inclusion. Arrangements for obtaining the diagram may be made with the authors.
4. Digital Equipment Corporation,PDP-11 Peripherals Handbook. Digital Equipment Corporation, Maynard, Massachusetts, 1975.