[corysama]

I vaguely recall seeing a DOS demoscene demo that filled the 320x200 screen with a letterboxed 256x200 gradient. Then it slammed the actual display frame data into the VGA 256 color pallete one line at a time on each horizontal sync. The result was an effective 18-bit color resolution image from a 256-color device. (I think MCGA didn't actually have 24-bit palletes)

Of course, it meant you had to spend 90% of the frame updating the pallete registers and only had the vertical blank time to draw everything into the frame buffer. But, the focus of the demo was the idea that high-color was at all possible on VGA hardware.

[inoop]

X14 by Orange?

https://www.youtube.com/watch?v=LRPhB1KkxMc