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hoglet67 / RGBtoHDMI

Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
GNU General Public License v3.0
841 stars 115 forks source link

Usable for old PC VGA output from 320x240 up to 1024x768? #394

Open 8192K opened 2 months ago

8192K commented 2 months ago

Apologies for opening an issue, but I don't seem to be able to ask a question anywhere else. If I missed something, please point me to it.

My use case it using an old DOS/Win98 based PC with an S3 Virge 325 graphics card and display the output on an HDMI monitor. This card produces resolutions from 320x240 (maybe 320x200, too?) to 1024x768 @16bit color depth. Anything higher is not required even though the card could manage 1600x1200. Can I use this project to convert all resolutions in the given range, especially those DOS resolutions 320x240 and 720x400 @70Hz, to HDMI? I understand I have to assemble something, that would be acceptable. However, if there's something pre-assembled, I'd buy that, too. I'm in Germany if it matters.

Thank you!

IanSB commented 2 months ago

No, VGA is not supported. This project is for earlier video standards such as EGA, CGA and 8 bit systems with 15Khz video (TV rate)

8192K commented 2 months ago

Thank you. So it wouldn't even support a 320x240 resolution from a VGA card?

Which solution would you suggest to get full VGA output for the mentioned resolution range on HDMI? Besides buying an old monitor, maybe.