Look at DOS Quake and the resolution that are available if no VESA 2 driver is installed. Those resolutions all play nice with standard VGA and have standard VGA timings, so no problem with LCDs and so on. Max is 360x480 and even original IBM PS/2 VGA can do that resolution.

Benedikt wrote on 2020-09-30, 10:02:

320x400 is indeed possible on every VGA, but the original question was about square pixels and pixels that are 2/3 wider than tall are quite far away from that.

You're right. Sorry, I missed that part. 😅
Just checked my DOS programs and "2SHOW" graphics viewer supports this 360x480 @256c mode also.

Edit: Also added a sample picture viewed in different modes for resolutions comparison.
Hope that's okay. I know it's not everyones taste, but it's harmless, at least. Don't mean to offend anyone.
Found on tumbler long ago (?).. I wished I could provide some credits.

Jo22 wrote on 2020-10-01, 23:40:

You're right. Sorry, I missed that part. :sweatdrop: Just checked my DOS programs and "2SHOW" graphics viewer supports this 360x […]
Show full quote

Benedikt wrote on 2020-09-30, 10:02:

320x400 is indeed possible on every VGA, but the original question was about square pixels and pixels that are 2/3 wider than tall are quite far away from that.

You're right. Sorry, I missed that part. 😅
Just checked my DOS programs and "2SHOW" graphics viewer supports this 360x480 @256c mode also.
2show_001.png

Edit: Also added a sample picture viewed in different modes for resolutions comparison.
Hope that's okay. I know it's not everyones taste, but it's harmless, at least. Don't mean to offend anyone.
Found on tumbler long ago (?).. I wished I could provide some credits.

Thank you!