Emulator: VisualBoyAdvance-M (15.03.2017)
Hardware: 1998 - 2003
Wiki: https://en.wikipedia.org/wiki/Game_Boy_Color

Hotkeys:
Alt + F4 = Quit
Alt + Enter = Switch between full screen and windowed modes
F = Warp Mode
Ctrl+P = Toggles pause
Shift F1 - F10 = Save a state to file
F1 - F10 = Load a state from file