Show TTL games in MAME rom list?

[LaoK]

In the most recent versions of MAME there are a couple of TTL (transistor-transistor-logic) based games from the earliest days of video games built in, namely Pong and Breakout, but presumably because they don't have ROMs per se, AM is unable to list them in the list of games. 

Is there something I'm missing about how to configure AM to show these games in the interface, or is this a feature yet to be implemented? 

Thanks!

[chrisvg]

You could try using the commandline to create your romlist, you can force it to add everything from the mame listxml instead of comparing against your rom file.

eg:

attract --build-romlist mame --full --output allmame