Hello and welcome,
A very old device sends a TTL signal in the CGA standard, but monochrome, i.e. RGB as one signal. I would like to get a monochrome CVBS signal from this. It's probably much simpler than your MCE project. Can I ask you for a diagram?
Best regards, Jan Kobior
jkobior@gmail.com
quote=scorp post_id=934661 time=1612624830 user_id=40266]
Hello there,
just wanted to briefly introduce another small project of my - a MCE-Adapter. You can use it to connect old PCs to a 15kHz capable RGB/VGA Monitor or to use it with Sync converters like GBS-8200. I made it to be able to use my Hercules, CGA and EGA graphics cards, but may be someone else will find it useful as well. The project is completely open source, both hardware and software.
Features:
- Converts digital MDA, Hercules, CGA, low-res EGA, high-res EGA to analog RGBS or RGBHV/VGA signal
- Color DAC for 3, 4, 16 and 64 color modes
- Switchable composite sync from H- and V-Sync
- Loop through HV-Sync, colors conversion only mode
- Switchable composite sync inversion
- Includes IBM's "brown-hack"for CGA and 16-colors EGA modes
- Switchable green and white monochrome screen emulation
You can find the project here:
https://github.com/necroware/mce-adapter
I also made a video series about it on my youtube channel, if you are interested:
https://www.youtube.com/watch?v=7c3yLX52ZEs&l … uGk6_uk54765G1t
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