6-button controller and 4-player multitap support
SVP chip support for Virtua Racing (needs a fast device)
Backup memory and save state support, auto-save and ten manual slots for save states.
Supports ROM-based games in .bin, .smd, .gen, and .sms formats, optionally in zip files
About Save Games:
A .srm file is created for games with battery backup
Save states are named .0A.gp for the auto-save slot, and .0X.gp where X is the slot number for manual saves.
6-button Support: enable with games such as Street Fighter II to use all 6 buttons
Multitap Support: enable to play 4-player games such as Bomberman, disable on all others