A computer construction project that is both educationally sound and can be completed in one semester

A student-built, expandable computer project for the Electrical Engineering Microprocessor laboratory is described. The design goals include low-cost, modern instruction set, availability of inexpensive hardware and software tools, and a level of fabrication complexity within reach of the student. Hardware and software tools are introduced and various methods to obtain them are discussed. The project demonstrates a sequential method that assists the beginning student in building and “turning-on” the computer. The method is applicable to more complex digital machines. Logic diagrams for the basic system are included. Fabrication details including power bus management and by passing are discussed. Suggestions are given to extend the computer to accommodate other microprocessors, memory and I/O devices