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+Virtual Game Boy is the Nintendo GameBoy(tm) emulator on X-Window.
+
+ Test your VGB installation with the command(default):
+
+ vgb /usr/X11R6/share/VGB/CART.GB
+
+ If you want to know what the cartidge file is, type as:
+
+ gblist <cartridge file>
+
+ You buy the cartridges. GameBoy software is copyrighted and still sold.
+Therefore, its distribution is an act of piracy. Nothing prohibits you
+from backing up a cartridge you own and playing it on the emulator though.
+To back up a GameBoy cartridge, you can use either SmartCard copier (about
+$100 for a standalone version), or a self-built copier designed by Pascal
+Felber, description of which is available at:
+
+ http://www.freeflight.com/fms/GameBoy/
+
+GameBoy-related archives with technical and other info are located at:
+
+ http://www.freeflight.com/fms/GameBoy/
+ ftp://ftp.komkon.org/pub/GameBoy/
+
+Usage: vgb [-option1 [-option2...]] <filename>
+<filename> = name of file to load as cartridge [CART.GB]
+[-option] =
+ -verbose <level> - Select debugging messages [5]
+ 0 - Silent 1 - Startup messages
+ 2 - Illegal writes 4 - Illegal CPU ops
+ 8 - Bank switching
+ -vperiod <period> - Set VBlank interrupts period [69905 cycles]
+ -uperiod <period> - Number of interrupts per screen update [2]
+ -help - Print this help page
+ -cheat <GG code> - Activate a GameGenie cheat
+ -delay/-nodelay - Delay/don't delay line interrupts [-nodelay]
+ -crc/-nocrc - Check/don't check cartridge CRC [-crc]
+ -autoa/-noautoa - Autofire/No autofire for button A [-noautoa]
+ -autob/-noautob - Autofire/No autofire for button B [-noautob]
+ -logsnd <filename> - Write soundtrack to a file [off]
+ -trap <address> - Trap execution when PC reaches address [FFFFh]
+ -saver/-nosaver - Save/don't save CPU when inactive [-saver]
+ -colorN <name> - Change color #N [white,#989898,#585858,black]
+ -bcolorN <name> - Change background color #N [same]
+ -scolorN <name> - Change sprite color #N [same]
+ -wcolorN <name> - Change window color #N [same]
+
+Keyboard bindings:
+ [SPACE] - A button (also: A,S,D,F,G,H,J,K,L)
+ [LALT] - B button (also: Z,X,C,V,B,N,M)
+ [TAB] - SELECT button
+ [ENTER] - START button
+ [ESC] - Quit emulation (also: [F12])
+
+ [F1] - Go into built-in debugger
+ [F2] - Show LCD controller registers
+