Madden NFL '97 (Game Boy)

Somehow Tiertex managed not to fumble when attempting to make American Football fun and engrossing.

Unused Super Game Boy Functions
Tiertex may have planned extra Super Game Boy features and may have cut back on a few likely due to time constraints, or other reasons. Tiertex was generous and enabled palette and or controller settings.

SOUND
Specific sound functions required for song playback exist though a single packet is never used and can be found in the listing located at. Bits are set.

JUMP
Used to set the SNES Prgram Counter to a specified address. Alternatively, the JUMP can be used to set a new address for the SNES NMI handler, the NMI handler remains unchanged if all bytes 4-6 are zero. shows a JUMP Super Game Boy Packet that is loaded during startup though it does nothing since bytes 4-6 are set to zero. Examples of setting JUMP bit 6 to can be seen in Space Invaders and Nekketsu! Beach Volley dayo Kunio-kun.

ICON_EN
Super Game Boy command packet disables in-game palette and or controller selection schemes which can be disabled by the game developer; however border selection cannot be disabled. Palette disabling would serve games like Uno 2: Small World where custom Super Game Boy palettes are required in order to play. Games may have overlayed the action window with a custom SNES object or in certain instances where switching away from the intricate palette set would make certain elements of the game look glitched-out or distorted. Disabling controller menu selection schemes could have been used to prevent the player from abusing the A-button and cheating in certain games, or may benefit the player preventing them from skipping over answers in quiz games such as Tokimeki Memorial Pocket: Culture-hen: Komorebi no Melody and Tokimeki Memorial Pocket: Sports-hen: Koutei no Photograph, the only two games that solely disable controller selection schemes. Alternatively, palettes can be set to revert back to the original once changed by using Super Game Boy command packet and bit set to. Madden '97 has the Super Game Boy command packet with bit set to  though it is called. Game Boy Game Genie code will disable palette and controller settings, assuming this is what would have been disabled judging by the other Tiertex games that disable functions.

PAL_PRI
PAL_PRI. Command. when bit is set to, palettes are switched back to default when directed to by the game. This is leftover from a probable early idea to merely have palettes switch back instead of disabling them as seen in Kirby's Dream Land 2, Donkey Kong (Game Boy), Donkey Kong Land and other games. Loaded after PAL_SET with all bits set to. Game Genie code will enable this feature.