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Game Boy Bootstrap ROM
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Cleanup > Pages missing date references
Cleanup > Pages missing developer references
Cleanup > Pages missing publisher references
Games > BIOS/Firmware ROMs
Games > Games by content > Games with revisional differences
Games > Games by developer > Games developed by Nintendo
Games > Games by platform
Games > Games by publisher > Games published by Nintendo
Games > Games by release date > Games released in 1989
Games > Games by release date > Games released in April
Games > Games by release date > Games released in April > Games released on April 21
Games > Games by release date > Games released in July
Games > Games by release date > Games released in July > Games released on July 31
The Cutting Room Floor > Unimportant Awards > Game Boy games
Game Boy Bootstrap ROM |
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Developer: Nintendo
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The original Game Boy Bootstrap ROM will display a scrolling down "Nintendo" logo before booting the game. If the logo on the Game Pak does not match "Nintendo", the game will typically not run (preventing read errors and trapping some but not all unlicensed games).
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Bugs |
Revisional Differences
- Rev 0 (DMG) - A version of the bootstrap ROM limited to some early Japanese Game Boys (only DMG-CPU on the back, others have DMG-CPU A, B, C). The registered trademark symbol (®) is omitted from the company logo (usually "Nintendo" from the Game Pak header). If there is a Game Pak read error, the LCD may simply flash on and off without scrolling the logo down and the game will not run.
- Rev 1 (DMG) - The boot ROM used in most Game Boys. It added the ® to the top-right of the company logo. If there is a Game Pak read error (such as a bad company logo), unlike Rev 0 the 'logo' will scroll down as usual, but the game will not run.
- Pocket Game Boy (MGB) - In this revision, before control is handed over to the game the a register is written as 0xFF instead of 0x01. A game can retrieve this byte to distinguish if the hardware is DMG (01) or MGB (FF).
(Source: gbdev.gg8.se, Game Boy hardware database, Torchickens ("®" detail))
Categories:
- Pages missing developer references
- Games developed by Nintendo
- Pages missing publisher references
- Games published by Nintendo
- Pages missing date references
- Games released in 1989
- Games released in April
- Games released on April 21
- Games released in July
- Games released on July 31
- Games with revisional differences
- Game Boy games
- BIOS/Firmware ROMs
Cleanup > Pages missing date references
Cleanup > Pages missing developer references
Cleanup > Pages missing publisher references
Games > BIOS/Firmware ROMs
Games > Games by content > Games with revisional differences
Games > Games by developer > Games developed by Nintendo
Games > Games by platform
Games > Games by publisher > Games published by Nintendo
Games > Games by release date > Games released in 1989
Games > Games by release date > Games released in April
Games > Games by release date > Games released in April > Games released on April 21
Games > Games by release date > Games released in July
Games > Games by release date > Games released in July > Games released on July 31
The Cutting Room Floor > Unimportant Awards > Game Boy games