haas panel to controlle mesa board

In theory you could pass the serial data into a Mesa UART or the PC motherboard serial port and parse the data there.

It might be simpler to just wire the controls and keyboard matrix to a Mesa 7i73.

Have you logged any of the serial data stream?

Do you see any consistent pattern when you press particular keys?

Does anything correlate to: github.com/torvalds/linux/blob/master/in.../input-event-codes.h
(probably a bit too much to hope for)