Regards.
I want to convert Nickgammon's VGA program to an MDA monitor. I just need a test chart. I tried to change the timings, frequencies. Unfortunately, I didn't really get a good result. Is this a road or an unnecessary attempt?
This fund is:
http://gammon.com.au/Arduino/VGA_output.zip
Is there another way to drive an arduin with a TTL MDA monitor?
Thank you in advance for your answer. Sorry for my bad English knowledge.