> > It makes you wonder: what's the oldest surviving bug in Mame?
> Look for the open Mametesters bug with the lowest number.
That's just the oldest reported bug.
Honestly, I think there are still bugs from things emulated in the first few versions of MAME that have never been fixed or where things are hacked around.
Things like the Moon Cresta attract not being in sync, which was apparently 'more correct' (but at entirely the wrong framerate) in older versions, but even then still not 100% right.
Not major bugs, but bugs all the same. Likewise the Donkey Kong stuff that is being used to expose Billy, smf's recent tweaks suggest that until now that has always drawn in the wrong way, albeit different wrong ways over the course of the project.
MAME is improving all the time, bugs people haven't even noticed or reported are being squashed, Mametesters only provides an overview of the ones people have noticed.