Sonic the Hedgehog Pocket Adventure/Hidden content
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Through the use of a Neo Geo Pocket Color emulator, pressing the "option" button on the SEGA screen, it is possible to access a hidden debug menu. It is also possible to enable this by setting the high byte of the RESET vector of the ROM (located at 0x1F) to 0xFF. This enables
An interesting function of the debug mode is that it allows the player to switch between Sonic and Tails by pressing both the 
button. It is also possible to trigger a free-movement mode by pressing both 
and at once.
Beginning/Go to room/Direction/Sound test
"Beginning" is pretty straightforward. Simply pick the level you wish to start the game on, as if it was any other level select screen. The "Test" levels are just clones of Neo South Island, which will crash the emulator when selected.
"Go to room" will take the player to the puzzle and option screen.
"Direction" will take the player to the ending scenes.
"Sound Test" simply opens up the Sound Test.
Debug option
This menu is a bit more difficult to understand, the following explains the options use in detail:
- DEBUG DISP - Toggles the display of X/Y coords of the player in the HUD.
- ATK DISP - Toggles the display of hitboxes around destroyable objects (Enemies, Monitors, etc).
- BDY DISP - Toggles the display of hitboxes around the player.
- MUTEKI - Toggles invulnerability for the player (can't be hurt).
- ALL CLEAR - Toggles a full savegame.
References
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Manuals |
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