Capcom vs. SNK: Millennium Fight 2000

Unused Password?
The game has a set of passwords that can be entered in the test menu to unlock hidden characters and other features. You can find the list of passwords in plain text by opening epr23511a.ic22 (Revision A set) at or epr23511c.ic22 (Revision C set) at.

There are seven known passwords, but the list includes an eighth password: VDEGLIAR is listed before the others, but entering it in the test menu gives an "invalid code" message. Whether it actually does anything is currently unknown.

Marvel vs. Capcom 2 Leftovers
There's text for a Marvel vs. Capcom 2 character test menu in epr23511a.ic22 (Revision A set, at ) and epr23511c.ic22 (Revision C set, at ):

CHAR TEST SHOT1 HIT SHOT2 HIT SHOT3 HIT 00 RYU 01 ZANGIEF 02 GUILE 03 MORRIGAN 04 ANAKARIS 05 STRIDER HIRYU 06 CYCLOPS 07 WOLVERINE 08 PSYLOCKE 09 ICE-MAN 0A ROGUE 0B CAPTAIN AMERICA 0C SPIDER-MAN 0D HULK 0E VENOM 0F Dr.DOOM 10 TORON&KOBUN 11 JILL 12 HAYATO 13 New Character(Pirate) 14 New Character(SON-SON) 15 New Character(SABOTEN) 16 MARROW 17 CABLE 18 LAST BOSS 1 19 LAST BOSS 2 1A LAST BOSS 3 1B CHUN-LI 1C ROCK-MAN 1D ROLL 1E GOUKI 1F BULETTA 20 FELICIA 21 NASH 22 SAKURA 23 DAN 24 CAMMY 25 DHALSIM 26 VEGA 27 KEN 28 GAMBIT 29 JUGGERNAUT 2A STORM 2B SABRETOOTH 2C MAGNETO 2D SHUMAGORATH 2E WAR-MACHINE 2F SILVER-SAMURAI 30 OMEGA-RED 31 SPIRAL 32 COLOSSUS 33 IRON-MAN 34 SENTINEL 35 BLACK HEART 36 THANOTH 37 GIN-SAOTOME 38 CAPTAIN COMMANDO 39 HONE WOLVERINE 00 Normal 01 Jump 02 Dash 03 Sit 04 Turn 05 Guard 06 Jump Guard 07 Push Guard 08 Stand Punch 09 Stand Kick 0A Sit Punch 0B Sit Kick 0C Jump Punch 0D Jump Kick 0E Damage 0F Stun 10 Catch 11 Caught 12 Get Up 13 Appear 14 Win 15 Player 16 Special 17 Super 18 Effect 19 Demo 1A Etc. 1B Zangief Combine 1C Ending 1D Ending 00 Attack 01 Catch 02 Head 03 Body 04 Foot 05 Free?1 06 Caught 07 Free?2