@Edent I recently unearthed my old dev environment and put it on display in my home office :)
(This is not the product, it was a demonstrator, mostly used for trade fairs.)
@henryk oh wow! That's gorgeous.
Looks like it has the same screen and Epsom chip as this one that I disassembled.
@Edent Yes, this was the early days, and the Epson chip was what everyone used. I'm not even sure there *were* any others. I built the interface to that into the firmware.
It has multiple different "waveforms" for different purposes (reset the screen, black/white, greyscale) and external RAM for framebuffer/display state.
I remember my initial bringup and debugging where the display was flickering wildly, but not showing any image. Half a day later I learned: reset waveform only resets to white.