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Digimon Tamers: Battle Spirit

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Title Screen

Digimon Tamers: Battle Spirit

Also known as: Digimon: Battle Spirit (English)
Developer: Dimps
Publisher: Bandai
Platform: WonderSwan Color
Released in JP: October 6, 2001


DevTextIcon.png This game has hidden development-related text.
RegionIcon.png This game has regional differences.


Digimon Tamers: Battle Spirit is a fighting game where cute little monsters struggle to prove they're the best at grabbing each other's balls. That is to say, in lieu of a standard health bar system, Digimon drop "D-Spirits" when hit, which their opponents must collect to win the bout.

The game was followed up by an enhanced Ver. 1.5 release, but is best known internationally for its Game Boy Advance port, Digimon Battle Spirit. The original version is notably one of the few WonderSwan games to be released in English.

Development Text

Debug Menu

Elementary, my dear Cactus.
This needs some investigation.
Discuss ideas and findings on the talk page.
Specifically: Can the debug menu still be accessed somehow or are these strings all that remain?
TEST MESSAGE
DEBUG FONT
COMPANY LOGO
PUSH A
TITLE DEMO
PUSH A
NAME ENTRY
PUSH A
ENDHING
PUSH B
STAFF ROLL
PUSH B
SYNC WAIT
SYNC OK
SYNC FALSE
CANCEL

Beginning at 0x348420 are a series of strings which suggest a debug menu allowing the user to jump to various scenes. All of this text was cleaned out for the Game Boy Advance port.

Dimps Version

At 0x3C5F5A is the following string, presumably relating to some tool in use at Dimps rather than the game itself. Unlike the above debug text, this string was carried over to the Game Boy Advance game.

DIMPS Ver0.72

Regional Differences

The game features a complete English-language localization, enabled through reading a certain I/O port on the cartridge itself. Some WonderSwan games saw wider Asian releases in English, so this is likely to have been the intended market, and while the game has been released in South Korea, it is currently unknown what language a South Korean cartridge of it is set to.

Interestingly, some minor graphical glitching is introduced in the English title screen's backdrop, with some incorrectly placed tiles suggesting either that it was not completed or was simply poorly tested. Additionally, the option to connect to D-Ark "digivices" is only available when the game is running in Japanese.

Japanese English
DigimonTamersBattleSpirit-JP-WSC-Title.png DigimonTamersBattleSpirit-EN-WSC-Title.png
DigimonTamersBattleSpirit-JP-WSC-DARK.png DigimonTamersBattleSpirit-EN-WSC-NoDARK.png

Debugging Context

A main event call/jump table exists at C578:0069 (0x3C57E9) and called at C578:023B, C578:0245, and C578:035B. The table is grouped by triplet pointers, which correspond to the 3 calls.

Notable Table Entries
Offset Begin Update End 1000:004E BX Description
0x3C57F5 C661:0000 C661:0078 C578:0215 0x01 0x0C COMPANY LOGO
0x3C5801 9C3F:0000 9C3F:039A C578:0215 0x02 0x18 TITLE DEMO
0x3C5879 B22A:0000 B22A:06BA C578:0215 0x0C 0x90 ENDING
0x3C5885 9FFF:0000 9FFF:0201 C578:0215 0x0D 0x9C STAFF ROLL

Set a breakpoint at C578:023B and modify BX register and continue execution or more correctly set a breakpoint at C578:0227 and modify the contents of DS:004E (1000:004E).