@remax: well, MAME reports them as "bad" then, for whatever reason.

This is what I get with MAME 0.173:

Code:
rene@marvin:~/src/mame-git> ./mame64 -verifyroms roadblstc1
romset roadblstc1 [roadblst] is good
1 romsets found, 1 were OK.



A mind is like a parachute. It doesn't work unless it's open. [Frank Zappa]