Mike Tyson's Punchout Cheats (Nes)

If you want to challenge the master, (Tyson), enter this password at the title screen
under the continue option:  007 373 5963.

In between rounds rapidly press select to make your trainer rub you faster. This restores
your health for the next round.  You can only use this trick once per match

To access another world circuit punch in 135 792 4680 then press A+B+Select. Another world
circuit''s champ is Mchampion (Mike Tyson)

Busy signal:
  punch in 800 422 2602 as a password to hear a busy signal. Note: This was Nintendo''s
customer service phone number. 

  View credits:
  punch in 106 113 0120 as a password, then press A + B + Select.

97-0 at end: punch in 961 263 7938 as a password

  0-0 at end: punch in 932 820 8538 as a password

  minor championship: punch in 005 737 5423 as a password

  major championship: punch in 777 807 3454

  world circuit: punch in 267 853 7538 as a password