It does save states with thumbnail pictures.
Pandora A,Y,X,B buttons: Game Boy B,A,Select,Start
Tab: Menu to Load/Save States and Configure Emulator
Enter: Select Menu Items, ESC: Close Menus
1-5: Switch Game Boy 2-bit Color Palettes
6: Toggle Game Boy Color Color Filter
9: Pause Emulator* and 0: Unpause Emulator*
F8: Toggle Rumble (screen shake)
F9: Toggle Fullscreen, F10: Show FPS, F11: Reset
F12: Show SDL Keycodes\
ESC: Exit Emulator
The screen tearing is an issue in some games, but it runs pretty good on most games.
Give it a try and let me know what you think.
If you think you can fix the screen tearing let me know.
The discussion is HERE
EDIT: Thanks to everyone who helped getting this to work!
I just played all the way through Super Mario Land.
Extract the gngb.pnd from the attached gngb.zip.
Edited by dgame, 05 October 2010 - 01:46 PM.