Hardware and software implementation of an interface between the unibus and general purpose interface bus

Abstract

The Satellite Communications Laboratory at the Naval Postgraduate School uses a PDP-11 /34A minicomputer to develop software in support of a satellite signal monitoring system. The General Purpose Interface Bus (GPIB) interconnects several general measurement devices used in support of the laboratory. The laboratory uses these measurement devices for diagnostic and simulation tests related to research in the satellite signal monitoring field. This thesis discusses the development of the hardware and software interface between the PDP-11/34A Unibus and the GPIB. The interface permits high level language programs under the control of the Unix operating system (version t>) en tie PDP-11 /34A to access any device on the GPIB.