I don't know much about the Tasc Smartboard emulation, Sandro wrote that. I think the one he emulated is the 1st SB30 version, the one with 81 leds.
*edit* actually, looking at the code, it looks more like SB20, but with a workaround to control 81 leds instead of 64.

https://github.com/mamedev/mame/blob...ivers/tasc.cpp
https://github.com/mamedev/mame/blob...smartboard.cpp

For Bavaria, I simply 'listened' to reads and writes while the WIP emulation is running, and tried to reverse engineer them. Sometimes I won't even need to look at the disassembly. I don't have any chess hardware at home. When I need more info, I can derive it from good quality pcb photos. I also got a lot of help from Berger with the chesscomputer emulations, doing hardware tests and he even made schematics for some.

If I had the Novag Robot roms, I can give it a try. Or does it have an MCU with embedded ROM like the Savant? That one wasn't easy to dump, we had to send it to an expert.

And indeed, I'm not Franz.