Just compiled the r60 builds and things seem to be working fine for me, although I only tried a few things.
Mednafen-wip r60 - Sonic 2 and Streets of Rage 2 work brilliantly. Megadrive FTW!
Mednafen r60 - Tried a bunch of PCE CD games and all worked fine.
EDIT: It was actually only the wip r60 I tried. PCE CD was on an older revision of normal version.
and where is the download?
Ok, a bit confused. Which is the latest stable version that supports Megadrive? And it's compiled with SDK 3.41?
r60 although still a few bugs here and there
downloading this svn takes forever