DF8D-CDA7 Each round is 1 minute
D48D-CDA7 Each round is 2 minutes
C2BA-A7A7 Infinite time per round (must get knockout)

For the next three codes, ignore the timer
D08D-CDA7 Each round is 4 minutes
D98D-CDA7 Each round is 5 minutes
D18D-CDA7 Each round is 6 minutes

You may have to turn off effects until after ring announcements
338F-C7A4 Start on round 5
A38F-C7A4 Start on round 12
DD87-C4D4 Both fighters start with no super punches
D487-C4D4 Both fighters start with 2 super punches
D787-C4D4 Both fighters start with 3 super punches
C26D-3F05 Infinite super punches for player 1
C260-C4A9 Infinite super punches for player 2 or computer

For the rest of the codes, ignore punch meter graphics
6DEE-CF4E Create a stronger left jab
6DEE-CFCE Create a stronger left hook body
6DEE-C44E Create a stronger left hook head
6DEE-C4CE Create a stronger left uppercut
6DEE-C74E Create a stronger right cross body
6DEE-C7CE Create a stronger right cross head
6DED-3D4E Create a stronger right uppercut
DD2B-17D9 + C229-C4D9 Infinite strength beads