Tecmo Super Bowl.

 No.  Code  Effect
NOTE: CODES WORK IN PRESEASON AND PRO BOWL MODES ONLY.
SAFETY CODES DON'T WORK ON PUNT RETURNS.
   1  AAGT-FA2G  Touchdowns for player 1 worth 0 pts.
   2  ANGT-FA2G  Touchdowns for player 1 worth 3 pts.
   3  AYGT-FA2G  Touchdowns for player 1 worth 5 pts.
   4  BEGT-FA2G  Touchdowns for player 1 worth 9 pts.
   5  AAHA-FA74  Extra pts. for player 1 worth 0 pts.
   6  ANHA-FA74  Extra pts. for player 1 worth 3 pts.
   7  AYHA-FA74  Extra pts. for player 1 worth 5 pts.
   8  BEHA-FA74  Extra pts. for player 1 worth 9 pts.
   9  AAFA-EAF6  Field goals for player 1 worth 0 pts.
 10  AEFA-EAF6  Field goals for player 1 worth 1 pt.
 11  AYFA-EAF6  Field goals for player 1 worth 5 pts.
 12  BEFA-EAF6  Field goals for player 1 worth 9 pts.
 13  AARA-FA42  Safeties for player 1 worth 0 pts.
 14  AYRA-FA42  Safeties for player 1 worth 5 pts.
 15  BERA-FA42  Safeties for player 1 worth 9 pts.
 16  AARA-FA7J  Touchdowns for player 2 worth 0 pts.
 17  ANRA-FA7J  Touchdowns for player 2 worth 3 pts.
 18  AYRA-FA7J  Touchdowns for player 2 worth 5 pts.
 19  BERA-FA7J  Touchdowns for player 2 worth 9 pts.
 20  AASA-FA5L  Extra pts. for player 2 worth 0 pts.
 21  ANSA-FA5L  Extra pts. for player 2 worth 3 pts.
 22  AYSA-FA5L  Extra pts. for player 2 worth 5 pts.
 23  BESA-FA5L  Extra pts. for player 2 worth 9 pts.
 24  AAPA-FA5E Field goals for player 2 worth 0 pts.
 25  AEPA-FA5E  Field goals for player 2 worth 1 pt.
 26  AYPA-FA5E  Field goals for player 2 worth 5 pts.
 27  BEPA-FA5E  Field goals for player 2 worth 9 pts.
 28  AADA-EAH2  Safeties for player 2 worth 0 pts.
 29  AYDA-EAH2  Safeties for player 2 worth 5 pts.
 30  BEDA-EAH2  Safeties for player 2 worth 9 pts.
 31  AAVA-CAE6  Player 1 gets 0 timeouts for the first half
 32  BEVA-CAE6  Player 1 gets 9 timeouts for the first half
 33  AAWA-CAB2  Player 1 gets 0 timeouts for the second half
 34  BEWA-CAB2  Player 1 gets 9 timeouts for the second half
 35  AAVA-CAFE  Player 2 gets 0 timeouts for the first half
 36  BEVA-CAFE  Player 2 gets 9 timeouts for the first half
 37  AAWA-CACA  Player 2 gets 0 timeouts for the second half
 38  BEWA-CACA  Player 2 gets 9 timeouts for the second half
 39  A2WA-CA30  Player 1's timeouts not reset at halftime
 40  A2WA-CA38  Player 2's timeouts not reset at halftime
 41  B2WA-CA30  Neither player's timeouts reset at halftime
 42  A2YA-CA7T  Clock stops after each play
 43  AEAC-AAA4  Quarters in pre-season games are 1 min.
 44  ANAC-AAA4  Quarters in pre-season games are 3 mins.
 45  CAAC-AAA4  Quarters in pre-season games are 10 mins.
 46  CYAC-AAA4  Quarters in pre-season games are 15 mins.
 47  GAAC-AAA4  Quarters in pre-season games are 30 mins.
 48  AEAC-B928  Quarters in pro-bowl games are 1 min.
 49  ANAC-B928  Quarters in pro-bowl games are 3 mins.
 50  CAAC-B928  Quarters in pro-bowl games are 10 mins.
 51  CYAC-B928  Quarters in pro-bowl games are 15 mins.
 52  GAAC-B928  Quarters in pro-bowl games are 30 mins.
 53  AEYA-EAGR  1 play to get a 1st down
 54  AJYA-EAGR  2 plays to get a 1st down
 55  A6YA-EAGR  7 plays to get a 1st down--choose not to punt on 4th down
 56  ATYA-EA8G  Always 1st down