If you want to see the code I have been writing/porting to make RomWBW work with my eZ80 module, you can find it in 2 repos:
So far I have manage to port and verify the following modules with my eZ80:
* I am not quite sure where I got this module from, but its based on Dr. Scott M. Baker’s design.
** As this is driven by the TMS9918 driver, I hope/suspect that the TMS9918 VDP modules would also work - but I have yet to be able to confirm.