Game Boy™ Cartridge Header

Disclaimer : Most of the information on this page can be found at gbdev.gg8.se.

The cartridge header area is located at $0100-$014F in each cartridge.

Nintendo Logo

 CE ED 66 66 CC 0D 00 0B 03 73 00 83 00 0C 00 0D
 00 08 11 1F 88 89 00 0E DC CC 6E E6 DD DD D9 99
 BB BB 67 63 6E 0E EC CC DD DC 99 9F BB B9 33 3E

Address $0143 specifies whether the game supports CGB functions

Hex code	Description
$80	Game supports CGB functions, but works on all gameboys also
$C0	Game works on CGB only

Address $0146 Specifies whether the game supports SGB functions.

Hex code	Description
$00	No SGB functions
$03	Game supports SGB functions

Address $0147 Specifies which Memory Bank Controller (if any) is used in the cartridge, and if further external hardware exists in the cartridge.

Hex code	Description	Hex code	Description
$00	ROM ONLY	$01	MBC1
$02	MBC1+RAM	$03	MBC1+RAM+BATTERY
$05	MBC2	$06	MBC2+BATTERY
$08	ROM+RAM	$09	ROM+RAM+BATTERY
$0B	MMM01	$0C	MMM01+RAM
$0D	MMM01+RAM+BATTERY	$0F	MBC3+TIMER+BATTERY
$10	MBC3+TIMER+RAM+BATTERY	$11	MBC3
$12	MBC3+RAM	$13	MBC3+RAM+BATTERY
$15	MBC4	$16	MBC4+RAM
$17	MBC4+RAM+BATTERY	$19	MBC5
$1A	MBC5+RAM	$1B	MBC5+RAM+BATTERY
$1C	MBC5+RUMBLE	$1D	MBC5+RUMBLE+RAM
$1E	MBC5+RUMBLE+RAM+BATTERY	$FC	POCKET CAMERA
$FD	BANDAI TAMA5	$FE	HuC3

Address $0148 specifies the ROM Size of the cartridge.

Hex code	Description	Hex code	Description
$00	32 KB	$01	64 KB
$02	128 KB	$03	256 KB
$04	512 KB	$05	1 MB
$06	2 MB	$07	4 MB
$08	8 MB	$52	1152 KB
$53	1280 KB	$54	1536 KB

Address $0149 specifies the size of the external RAM in the cartridge (if any).

Address $014A specifies if this version of the game is supposed to be sold in Japan, or anywhere else. Only two values are defined.

Hex code	Description
$00	Japanese
$01	Non-Japanese