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Topic: Hooking up a CGA monitor without extra hardware (Read 165 times) previous topic - next topic


I had fun wiring up an old CGA monitor directly to an Arduino (UNO). Timing everything carefully is the main difficulty.

I realize there are some libraries for VGA out there already, but I saw nothing for CGA.

The code (and some mimimal instructions) can be found on github, enjoy!

The code currently implements a monochrome green 100x70 resolution (with a 700 byte framebuffer). It should be easy to mod it to support 4 colors (2 bits per pixel). Anything above that gets substantially harder  :smiley-eek-blue: .


Arduino clone with ATmega1284P   http://forum.arduino.cc/index.php?topic=277260.0


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