NBA All-Star Challenge
Books: How to Win at Super NES Games - Super NES Games Secrets
Conquering SNES Games
123B-3F0D Player 1 can't score in the one-on-one, free throw or tournament stages
A238-340D Player 2 or computer can't score in the one-on-one, free throw or
tournament events
A239-1F0D + A237-176D Player 1 can't score in 3-point shootout
A23F-176D + A23D-1FAD Player 2 or computer can't score in 3-point shootout
The rest of the codes work on the 1-on-1 and 1-on-1 tournament modes
A2C6-3F07 + 6DC6-3DA7 Stop shot clock
DFC3-34D7 + D4C3-3DA7 12-second shot clock
D0C3-34D7 + D6C3-3DA7 48-second shot clock--after the 1st shot