Gunbird 2 (Dreamcast)

Gunbird 2
Developer: Psikyo Publishers: Capcom (JP/US), Virgin Interactive (EU) Platform: Dreamcast Released in JP: March 9, 2000 Released in US: November 17, 2000 Released in EU: February 2, 2001 This game has hidden development-related text. This game has debugging material. This game has a hidden sound test. This game has a hidden level select.

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Test Mode

A debug menu can be accessed simply by holding Start at the Sega logo screen and keeping it held until the menu appears. If the "No VMU found" screen appears instead, the debug menu will appear by exiting the screen. All of the options are pretty much self-explanatory.

Stage Select

Actually not just a stage select, this screen also contains a character select, mode, rank, time, invincibility, and infinite bomb toggles,

Input Test

Your standard controller input test.

Sound Test

Your standard sound test. Note that the pitch and volume displays only appear if effect is selected.

There appear to be two versions of the sound test, with an alternate, more limited version. It should be possible to access the other version by replacing e0 53 at 8c08b478 with 7e 4d, but this has not been tested.

Maintenance Code

Code entry screen. This accepts the maintenance codes from the arcade version. They are supposed to display a message when entered, but the font does not appear to be correctly loaded on the Dreamcast, and displays garbage graphics instead.

Maintenance Codes

Code	Intended Message	Effect
53573	All data initialised	Presumably, this would clear something, but looking at the Ghidra decompilation, this doesn't appear to do anything on the DC version besides exit to the main Test Mode screen.
53157	AINE Flag cancelled	Disables Aine.
53765	Sit an AINE Flag1	Allows Aine to be selected by chance through random character selection.
51024	Sit an AINE Flag2	Enables direct selection of Aine (highlight random on character selection screen, then press down.)
52048	Maintenance Mode	It appears this would enable Stage Select, an enhanced sound test, and Pcm Strem Play options, but they're already available. The arcade version apparently has even more options (Obj Test, BG Test) when this code is entered.
Anything else	Err Code!!	Calls some function twice.

The code for the Maintenance Code screen is loaded into RAM at 8c076020 on the US Dreamcast version, and the table containing the passcodes is at 8c08b868.

Pcm Strem Play

Your standard voice test.