Johnson, Olin G.2022-02-092022-02-0919784747991https://hdl.handle.net/10657/8702The material presented in this Thesis concerns two topics: the first is the design of a Microprocessor Development System and the second is the application of this system for developing a rather extensive programming example. The Microprocessor Development System was designed around a Z-80 microprocessor. The system contains 8K of RAM, 12K of ROM, serial I/O ports and room for 3 additional cards, A 2K monitor was implemented in ROM and a cross assembler was set up on a large mainframe HOST system. An I/O routine was written to allow the microprocessor system to converse directly with the HOST system. Programs could then be developed on the HOST system, assembled with the cross assembler and loaded directly into the microprocessor for debugging. The programming example discussed is a program to emulate a multi-terminal network processor, a device which is used to multiplex several terminals on a timesharing system via a single modem line. Excellent results were obtained when using the HOST/Microprocessor combination for developing and testing programs for the microprocessor systemapplication/pdfenThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. §107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.Thesisreformatted digital