Using original RTI LCD display

Initially I tried to use original RTI display and kind of succeeded using VGA666 header on Raspberry Pi.

config.txt VGA666 settings:

# VGA
dtoverlay=vga666
enable_dpi_lcd=1
display_default_lcd=1
dpi_group=2
dpi_mode=87
hdmi_timings=480 0 29 35 66 234 0 4 10 11 0 0 0 60 0 9600000 0

Also you need to plug both VGA VSYNC and HSYNC wires into single RTI display VGA sync pin.

You can find more details about signals in my other RTI display experiment.

The reason why I finally decided to replace the screen was that I couldn't get the colors right and resolution is quite low. However, using original screen would be nice!

Also I have tried using HDMI -> VGA converter, but no success, because screen resolution is too low.