X-Y Monitor Tester

At one time I was considering buying some spare X-Y display monitors for some of my video games. I needed an easy way to determine if the monitors were basically functional, so Rich and I built this tester using a PIC16C54 and a quad 8-bit D/A converter. It displays several simple geometric patterns, stepping through the patterns when a button is pressed. We didn't build any vector circuitry per se, so it draws lines by plotting a series of intermediate points.

The code for this project is available under the terms of the Free Software Foundation's General Public License, Version 2. If you agree to the terms of the license, you may download a copy in either tar or zip format:

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Last updated October 12, 1995

Copyright 1995 Eric Smith