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Sonic the Hedgehog (Sega Master System, Game Gear)/RAM map
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The following article is a RAM map for Sonic the Hedgehog (Sega Master System, Game Gear).
These addresses are for the Sega Master System version.
Note that sizes are listed in decimal.
Offset Size Description ---- ---- ----------- C000 4096 Level layout D063 1 Sprite 1 X value on camera D064 1 Sprite 1 Y value on camera D075 1 Sprite 2 X value on camera D076 1 Sprite 2 Y value on camera D100 440 Camera data? D1B8 72 Empty D203 1 Controller input (FF none, XE up, XD Down, XB Left, X7 Right, CX Button 1, DX Button 2) D205 1 Level type|Normal/Demo switch D207 1 Timer/Pause flag? D20A 1 Monitor flash flag D213 3 Time bonus D216 1 Time bonus hex number & Continue countdown D219 1 Title Screen trigger? D223 2 Total Frame tally in levels D225 6 Empty? D22B 1 autopalette cycles 1 D230 1 autopalette cycles 2 D246 1 Lives value D251 1 Freeroll Camera X D252 1 Freeroll Camera Y D257 1 Camera place X D258 1 Camera place Y D25A 2 Camera X values D25D 2 Camera Y values D271 2 Camera Y values 2 D27F 1 Emeralds collected counter D280 1 Extra Lives gained by monitors counter (except special stages) D281 1 Special Stages entered D282 1 Special Stages complete 1 D283 1 Death flag for bonus D284 1 Continue counter D285 1 Special Stages complete 2 D288 1 After landing post flag D289 1 Timer after hitting post/machine to fading out level D28D 1 Invincibility timer D297 1 Rings frames D299 2 How long Sonic stands still for D2A5 1 Color Cycle speed D2A6 1 Color cycles auto D2A7 1 Color cycle of levels D2AA 1 Rings D2B4 1 Monitor flash flag 2 D2B7 2 Camera position D2B9 1 Sonic's status sprite D2BA 4 Score D2AC 1 Pause switch D2CE 3 Timer D2D9 2 Sonic's Y position (blocks) D2DF 1 Sonic's sprite value? D2E9 1 Sky Base Lightning timer (AB) D2FB 1 Sonic bubble pickup frames D2FF 3 Special Bonus score D321 1 Ring pickup frames D37E 62 Sprite block data D3BC 32 Palette fade in/out block D3FE 2 Sonic's X position (free) D401 2 Sonic's Y position (free) D410 1 Sonic's sprite flag D411 1 Speed shoes timer D41B 1 Labyrinth water height D73B 1221 Empty DC0A 3 Tempo of music DC2C 2 Channel 1 music DC59 2 Channel 2 music DC86 2 Channel 3 music DD12 679 Empty
Internal Data for Sonic the Hedgehog (Sega Master System, Game Gear)
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