The following are known Action Replay Codes for NBA Live 99 on Nintendo 64 (N64).

Device Compatibility: Action Replay & GameShark

Away Team Scores 0
801d401d0000

Away Team Scores 150
801d401d0096

Home Team Scores 0
801d34510000

Home Team Scores 150
801d34510096

Infinite Time Outs Away Team
801d40240007

Infinite Time Outs Home Team
801d34580007

No Time Outs Away Team
801d40240000

No Time Outs Home Team
801d34580000