Monthly Archives: February 2014

Single Step Instruction Circuit

While debugging you may find you would like to step through each instruction executed to assure that the function of your system is correct. Instead of cycling the clock over and over to get through each instruction with a single-step clock … Continue reading

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Z80 Test Circuit

Just think of how terrible it would be to wire up an entire system just to find out your microprocessor was a dud, and didn’t work properly. To avoid this we can build a test circuit to check if everything … Continue reading

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Low-Frequency Clock Generation

The Z80 must be supplied with an external clock source on pin 6 for most if not all Z80 DIP packages. A clock source is one of the most useful de-bugging tools that you can use in developing a Z80 … Continue reading

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