SYSTEM BIOS

	BIOS VERSION
	At the Test Menu, press Service 40 times.

AIR TRIX

	SHOW SERIAL FOR MAIN BD AND ROM BD
	During attract mode hold Left and press:
	Down, Down, Right, Down, Down, Right, Down, Right

	COUNTRY SELECT
	At the Game Test Menu press:
	1P: Start, Service, Service, Start, Start, Service, Start

	CHANGE WEB URL
	At the Game Assignments Menu press:
	1P: Service, Start, Start, Start, Start, Service, Service

	CHANGE ROLL MODE
	At the Game Assignments Menu enter WEB URL code and then press:
	1P: Up, Down, Up, Down, Btn1, Btn2, Btn1, Btn2
	Then hold 2P Start and press Test to change mode

	PLAY SECRET CHARACTERS
	Insert coin, hold Left and Right and press Start

BRAVE FIREFIGHTERS

	SHOW SERIAL FOR MAIN BD AND ROM BD
	At the very first intro sequence screen ("PM 07:00...") press following sequence.
	1P Water, 1P Water, 2P Water, 2P Water, 1P Fog, 2P Fog

	COUNTRY MENU
	At the Game Test Menu press:
	1P Water, 1P Water, 1P Water, 1P Water, 1P Start, 1P Start, 1P Start, 2P Start, 2P Start, 2P Water
	
PLANET HARRIERS

	COUNTRY SELECT
	At the Game Test Menu press:
	1P: Left, Right, Left, Right, Right, Left, Right, Left, Right, Right, Left, Left, Left, Right, Right, Left

	ACTIVATE DEBUG MODE
	Any time during the game hold Service, then press:
	1P: Left, Left, Left, Left, Left, Left, Left, Left, Right, Right, Right, Right, Right, Right, Right, Right, Left, Left, Left, Left, Right, Right, Right, Right, Left, Left, Right, Right, Left, Right, Left, Right

	DEBUG OSD
	While debug mode active:
	Pause game (1P Left+Right or 2P Start+Btn3) and then press P2 Btn4+Btn2. Unpause game (1P Left+Right or 1P Start + 2P Start)

	SHOW SERIAL FOR MAIN BD AND ROM BD
	Any time during the game press:
	1P: Fire, Lock, Left, Right, Left, Lock, Right, Fire, Lock, Right

	UNLOCK OPA-OPA CHARACTER
	When selecting player, if you move the selection over X, then Nick, Cory, Glenn, Cory, Nick, Cory, Glenn, X, Cory and then Glenn again, you will be able to play the hidden character Opa-Opa.

SEGA NASCAR

	SHOW SERIAL FOR MAIN BD AND ROM BD
	During attract mode enter a sequence of short and long pressings of the View change button (Down)
	1P: Short, Short, Short, Long, Short, Long, Long, Long

	COUNTRY SELECT
	At the Game Test Menu enter a sequence of short and long pressings of the Down button
	1P: Long, Short, Short, Long, Short, Short, Long, Short

	UNLOCK EXTRA COURSE 'TEAM SEGA'
	At course select screen shift gears 4-2-1-3, and step on the brake. Scroll right to see extra course.
	
	UNLOCK DALE EARNHARDT JR.
	Select Dale Earnhardt, Sr, Car 3, put the shifter into 3rd gear and press on the brake pedal.

	UNLOCK ADAM PETTY
	Select Kyle Petty. Car 44, step on brake pedal and shift 4th, to neutral, to 4th.
	
	UNLOCK RICHARD PETTY
	Select Kyle Petty, Car 44 and shift up to 1st gear.

STAR WARS RACER ARCADE

	COUNTRY SELECT
	At the Game Test Menu, enter the FEATURES option and press:
	1P: Start, Start, Start, Right, Left, Right, Start, Right, Left, Left, Start, Start, Start+Right.

	UNLOCK BEN QUADINAROS
	At the Game Test Menu, enter the FEATURES option and press:
	1P: Left, Left, Left, Right, Start, Right, Start, Left, Start, Right, Left, Left, Left.
	OR
	Complete 50 Expert Races.
	
	UNLOCK GASGANO
	At the Game Test Menu, enter the FEATURES option and press:
	1P: Right, Right, Right, Left, Left, Start, Start, Start, Start, Right, Left, Left, Left.
	OR
	Play 700 games in total.

	RESET SETTINGS
	At the Game Test Menu, enter the FEATURES option and press:
	1P: Start, Start, Start, Left, Right, Start, Start, Start.

	UNKNOWN HIDDEN FEATURE
	EEPROM 0x29 byte flag 0x80 set. Can't be enabled with code, but can be switched inside EEPROM and seems checked by the game somewhere.
	Unused disabled cheat: Right, Right, Right, Left, Start, Left, Start, Right, Left, Left, Right, Right, Right.

	SHOW SERIAL FOR MAIN BD AND ROM BD
	At the Advertisement screen press:
	1P: Right, Right, Right, Left, Right, Left, Right, Right, Brake, Right, Right, Right.

VIRTUAL-ON 4: FORCE
	GAME TEST MODE PASSWORDS:
	20001210_MEGUMEGU 		SET VERSION:7.5
	20010523_AYUAYU 		SET VERSION:7.6
	20010702_YUUYUU 		SET VERSION:7.7
	_LANDING_FORCE 			SET COUNTRY (use JP or US only, others have bugged tutorial texts)
	___*STOP_VER 			SET VERSION:STOP OK
	___*NONSTOP_VER 		SET VERSION:STOP NG
	_FUTAGO 				SET GAME START MODE:NORMAL
	_TANMATSU 				SET GAME START MODE:NORMAL
	___*UNITE_VER 			SET GAME START MODE:UNITED
	___*DEV_VER 			SET VERSION:DEVELOPER (doesn't work / disabled, at least in rev E)
	note: "_" means space

	SHOW SERIAL FOR MAIN BD AND ROM BD
	Left lever: Up, Down, Down, Down, Right, Left, Right, Left, Turbo, Trigger

	CRW CLEANING
	Hold Right lever Down + Right + Turbo + Trigger + PIB (Left lever button3)
