Joker Command P1 D011424C ???? 
Joker Command P2 D0114250 ???? 
  -Using value 0041 for Joker Command, you can press L2+X to activate a code
   during gameplay. This helps avoid lock-ups at the start menu.
 
Character Modifier P1 8012AA4C 00??
Character Modifier P2 8012AA84 00?? (note 1)
  -For the character modifier code, replace the "??" with the following digits:
   Reapermon         00
   Black WarGreymon  01 
   Omnimon           02 
   Impmon            03 
   Beelzemon         04 
   Imperialdramon PM 05 
   Gabumon           06 
   Augumon           07 
   Patamon           08 
   Terriermon        09
   Guilmon           0A 
   Renamon           0B 
   Wormmon           0C 
   Veemon            0D 
   Gatomon           0E 
   Metal Garurumon   0F 
   WarGreymon        10 
   Seraphimon        11 
   MegaGargomon      12 
   Gallantmon        13 
   Sakuyamon         14 
   Stingmon          15 
   Imperialdramon    16 
   Magnadramon       17 

Stage Select (VS. Modes) 8012AB20 000? (note 2)
  -For "?"
   Recycling Center  0
   Wilderness        1
   Revolution        2
   Sanctuary         3
   Glacier           4
   Volcano           5
   Reapermon's Stage 6
   Basketball Game   7
   Digivolve Race    8
   Target Games      9

Handicap Modifier P1 8012AA64 000? (note 3)
Handicap Modifier P2 8012AA9C 000?
  -For the handicap modifier code, replace the "?" with a digit from 1-7. If
   you can go higher, such as "FFFF" which gives you about 2097152 health
   points!

Enable a Digimon 8012AB?? 0001 (note 4)
  -For the enable Digimon code, replace the “??” with the following digits:
   Reapermon         34
   Black WarGreymon  38 
   Omnimon           3C 
   Impmon            40 
   Beelzemon         44 
   Imperialdramon PM 48 
   Gabumon           4C 
   Augumon           50 
   Patamon           54 
   Terriermon        58
   Guilmon           5C 
   Renamon           60 
   Wormmon           64 
   Veemon            68 
   Gatomon           6C 
   Metal Garurumon   70 
   WarGreymon        74 
   Seraphimon        78 
   MegaGargomon      7C 
   Gallantmon        80 
   Sakuyamon         84 
   Stingmon          88 
   Imperialdramon    8C 
   Magnadramon       90 

33 P1 Wins modifier 6 801E7180 000?
34 P2 Wins modifier  801E7184 000?
  -For the wins modifier code, if you change the "?" to 2, you have to win only
   one battle in 1 player mode to advance to the next level or go to the
   "continue" screen instead of two or three. This freezes the game, so use the
   joker command to turn it on during battle.
 
35 P1 Infinite Jumping  8010776C 0000 (note 5)
36 P2 Infinite Jumping  80107C64 0000 

37 P1 Every point is worth 65535 pts.  8005FBEC FFFF 
38 P2 Every point is worth 65535 pts.  8005FC04 FFFF 

NOTES:

Note 1- This code only allows it so that in 2 player mode, the 2nd player can't 
move his box off of a certain spot. If you go into 1 player mode, it doesn't 
change what Digimon your up against.

Note 2- It is believed that this code will have no effect in 1 player mode and
only makes it so that you can't switch the select box off a certain level.

Note 3- This code has no effect in 1 player mode.

Note 4- The hacked Digimon are only available as long as the Gameshark is in.
Even is you save the game with the code on, it won't be permanent.

Note 5- This code stops working if you Digivolve during battle.