Tommy Lasorda Baseball.

 No.  Code  Effect
NOTE: there are 2 versions of this game. If the"A" Codes do not work, then try the "B" Codes.
Unless otherwise noted, all codes below apply to both players.
   1A  AAEA-AAAA + AAEA-AACC + ACPA-AAHY  Regulation game lasts 1 inning
   1B  AADT-AAGA + AAEA-AAAC + ACNA-AACR
   2A  AEEA-AAAA + AEEA-AACC + AGPA-AAHY  Regulation game lasts 2 innings
   2B  AEDT-AAGA + AEEA-AAAC + AGNA-AACR
   3A  AJEA-AAAA + AJEA-AACC + ALPA-AAHY  Regulation game lasts 3 innings
   3B  AJDT-AAGA + AJEA-AAAC + ALNA-AACR
   4A  ATEA-AAAA + ATEA-AACC + AWPA-AAHY  Regulation game lasts 5 innings
   4B  ATDT-AAGA + ATEA-AAAC + AWNA-AACR
   5A  A2EA-AAAA + A2EA-AACC + A4PA-AAHY  Regulation game lasts 7 innings
   5B  A2DT-AAGA + A2EA-AAAC + A4NA-AACR
   6A  RHVA-A6WJ + AHVA-BE4L  Pitches use less energy
   6B  RHST-A6Y8 + AHST-BE7A
   7A  RHVA-A6WJ + A5VA-BE4L  Pitches use more energy
   7B  RHST-A6Y8 + A5ST-BE7A
   8A  RHVA-A6WJ + CDVA-BE4L  Pitches use much more energy
   8B  RHST-A6Y8 + CDST-BE7A
   9A  BMVA-AA4W  Pitches use no energy
   9B  BMST-AA7J
 10A  AJ3T-AAD2  Batter walks on 2 balls
 10B  AJ3T-AAB2
 11A  AN3T-AAD2  Batter walks on 3 balls
 11B  AN3T-AAB2
For Codes 12 and 13, only 4 balls are displayed on screen, but you will still have the larger number.
 12A  AY3T-AAD2  Batter walks on 5 balls
 12B  AY3T-AAB2
 13A  A23T-AAD2  Batter walks on 6 balls
 13B  A23T-AAB2
 14A  AA3T-AA56  Batter never walks
 14B  AA3T-AA36
 15A  HT3T-AA3N  Any pitch taken is a ball
 15B  HT3A-AA9N
 16A  4A3T-AA5L  Any pitch taken is a strike
 16B  4A3T-AA3L
 17A  CJ3T-AN3L + FA3T-AA36 + FE3T-BA38  Taken strikes do not count
 17B  CJ3A-AN9L + FA3A-AA96 + FE3A-BA98
 18A  9DTT-ACC4 Foul ball after  2 strikes is an out
 18B  9DSA-ACFT  Foul ball after 2 strikes is an out
 19A  AXPA-AA4Y  Foul bunt after 2 strikes is not an out
 19B  AXMT-AA7L
Codes 20 Thru 25 are for Open Game mode
 20A  AFJT-BA76 + 2BJT-ACP8 + 9BJT-ACRC
 + GKJT-AD8G + 9KJT-BCRE
 Game starts with computer leading 1-0  
 20B  AFJT-BA2E + 2BJT-ACJG + 9BJT-ACJL
 + GKJT-AD2R + 1KJT-BCJN
 21A  AFJT-BA76 + 2BJT-ACP8 + 9BJT-ACRC
 + GKJT-AD8G + 3KJT-BCRE
 Game starts with computer leading 2-0
 21B  AFJT-BA2E + 2BJT-ACJG + 9BJT-ACJL
 + GKJT-AD2R + VKJT-BCJN
 22A  AFJT-BA76 + 2BJT-ACP8 + 9BJT-ACRC
 + GKJT-AD8G + 73JT-BCRE
 Game starts with computer leading 3-0
 22B  AFJT-BA2E + 2BJT-ACJG + 9BJT-ACJL
 + GKJT-AD2R + Z3JT-BCJN
 23A  AFJT-BA76 + 2BJT-ACP8 + 9BJT-ACRC
 + GKJT-AD8G + GVJT-AGGE
 Game starts with player 1 leading 4-0
 23B  AFJT-BA2E + 2BJT-ACJG + 9BJT-ACJL
 + GKJT-AD2R + 6VJT-AGAN
 24A  AFJT-BA76 + 2BJT-ACP8 + 9BJT-ACRC
 + GKJT-AD8G + 6BJT-BCRE
 Game starts with player 1 leading 5-0
 24B  AFJT-BA2E + 2BJT-ACJG + 9BJT-ACJL
 + GKJT-AD2R + YBJT-BCJN
 25A  AFJT-BA76 + 2BJT-ACP8 + 9BJT-ACRC
 + GKJT-AD8G + 3BJT-BCRE
 Game starts with player 1 leading 6-0
 25B  AFJT-BA2E + 2BJT-ACJG + 9BJT-ACJL
 + GKJT-AD2R + VBJT-BCJN
Codes 26 Thru 31 are for Exhibition Game mode
 26A  AFJT-BA80 + 2BJT-ACR2 + 9BJT-ACR6
 + GKJT-AD9A + 9KJT-BCR8
 Game starts with player 2 leading 1-0
 26B  AFJT-BA28 + 2BJT-ACKA + 9BJT-ACKE
 + GKJT-AD3J + 1KJT-BCKG
 27A  AFJT-BA80 + 2BJT-ACR2 + 9BJT-ACR6
 + GKJT-AD9A + 3KJT-BCR8
 Game starts with player 2 leading 2-0
 27B  AFJT-BA28 + 2BJT-ACKA + 9BJT-ACKE
 + GKJT-AD3J + VKJT-BCKG
 28A  AFJT-BA80 + 2BJT-ACR2 + 9BJT-ACR6
 + GKJT-AD9A + 73JT-BCR8
 Game starts with player 2 leading 3-0
 28B  AFJT-BA28 + 2BJT-ACKA + 9BJT-ACKE
 + GKJT-AD3J + Z3JT-BCKG
 29A  AFJT-BA80 + 2BJT-ACR2 + 9BJT-ACR6
 + GKJT-AD9A + 6VJT-AGG8
 Game starts with player 1 leading 4-0
 29B  AFJT-BA28 + 2BJT-ACKA + 9BJT-ACKE
 + GKJT-AD3J + 6VJT-AGBG
 30A  AFJT-BA80 + 2BJT-ACR2 + 9BJT-ACR6
 + GKJT-AD9A + 6BJT-BCR8
 Game starts with player 1 leading 5-0
 30B  AFJT-BA28 + 2BJT-ACKA + 9BJT-ACKE
 + GKJT-AD3J + YBJT-BCKG
 31A  AFJT-BA80 + 2BJT-ACR2 + 9BJT-ACR6
 + GKJT-AD9A + 3BJT-BCR8
 Game starts with player 1 leading 6-0
 31B  AFJT-BA28 + 2BJT-ACKA + 9BJT-ACKE
 + GKJT-AD3J + VBJT-BCKG