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EE395  -  Microprocessor Laboratory

Computer Construction Project and Experiments

Experiment 3:  The SBC as an IC Test Jig

The student should obtain three (3) common combinatorial chips, such as the 7400, 7408, 7432 or whatever. The microprocessor should be used to output a voltage test pattern to the chip using the output port and to read back the chip output using the input port. Pass or fail should be signaled on completion of the test by putting all 0s or all FFs in D0.

The above should be demonstrated for each of the combinatorial chips. A working chip can be made to look defective if one of its input pins is pulled from the socket.