Press the Small Spot on the Main Menu to display the Cheat Entry Box.  Then, enter one of the following codes in to activate the corresponding cheats:

Cheat	Code
Five Downs	LONGTIME
Harder Hits	SMASHMOUTH
More Fumbles	SUPERSLICK
More Interceptions	BADPASS
More Sacks	SADSACK
Opponent Has Only Three Downs	SHORTTIME