This is an unofficial Picodrive rewind modification. Picodrive is a Sega Genesis emulator.

Release notes:

Hi everyone!

After a few corrections, this is the final release for the
Unofficial Picodrive 1.35b R (Rewind Mod).

This updated version adds this features:

1) Now you can remap the rewind key (default RTRIGGER)
2) Allows you configure rewind parameters in the new “Rewind” menu,
in order to have more rewind time or more smooth rewind.

Finally, I want to thank NOTAZ (main Picodrive developer) for letting me
publish this unofficial version.

Greetings to all of you!

DAVEX

http://forums.qj.net/showthread.php?t=146956