Something nice I must post to gain Full Membership... The result of my TMSS Genesis OS research. - ROM OFFSETS - -Filler data- $000 - $0FF $000 - $0FF 68K Vectors -HEADER- $100 - $1FF $100 - $103 The Sega text which TMSS normally is looking for. (But it does not check itself) $105 - $10F 'GENESIS' text $110 - $11F © SEGA 1990.MAY $120 - $14F Domestic name $150 - $17F Overseas name $180 - $18D Serial number (OS 00000000-00) $18E - $18F Checksum (unimportant; the bios does not check it's CS) $1F0 - $1F2 Region (unimportant; the bios does not region check itself) -TMSS CHECK ROUTINES- $200 - $2D6 $216 - $219 Sega text (possible part of TMSS check) $2C7 - $2C9 First part of TMSS check $2D2 - $2D5 Sega text (possible part of TMSS check) -ART & PALETTES- $2D6 - $36F $2D6 - $369 Art (Sega logo, text) $36A - $36B Palette: BG $36C - $36D Palette: Text $36E - $36F Palette: Unused Sega text -Filler data- $370 - $74F $370 - $6CF Filler data $6D0 - $74F Filler data -TEXT INTERFACE AND TI CODE- $750 - $7B3 $750 - $760 Text line 1: produced by or $762 - $774 Text line 2: under license from $776 - $78A Text line 3: sega enterprises ltd. -Filler data- $7B4 - $7FF $7B4 - $7FF Filler data -INFO- Pallettes: Like normal MD pallettes. Edit them in a hex editor. ASCII Text: Only use lowercase. Special Chars: FF = Linebreak. 7B = Dot. 7C 7D 7E 7F = Sega font letters. Between Sega and Enterprises (hex adress $77A), there is an strange 2C (,). What it does there is unknown (for me). Tools used: Fusion, Gens Movie, Genesis OS, Knuckles' Chaotix, XVI32, Sik's Genesis OS hack. Special Thanks to: Sik, Sega, Steve Snake and the makers of Gens Movie, the makers of XVI 32.