ROM Cartridge Data 100h: 'SEGA MEGA DRIVE ' 110h: '(C)SEGA 1988.JUL' 120h: GAME NAME (DOMESTIC) 150h: GAME NAME (OVERSEAS) 180h: 'GM XXXXXXX-XX' 18Eh: $XXXX 190h: CONTROL DATA 1A0h: $00000000, $XXXXXXXX 1A8h: $FF000000, $FFFFFFFF 1B0h: EXTERNAL RAM DATA 1BCh: MODEM DATA 1C8h: MEMO 1F0h: Country in which the product can be released. 100h SEGA system name and TITLE in common with all ROMs note: If SEGA isn't at the location then the game will not run on newer consoles. 110h Copyright notice and year/month of release Firm name in 4 ASCII characters. 120h Domestic Game Name 150h Overseas Game Name 180h Cartridge Type TYPE GAME : GM EDUCATION : A1 NO. PRODUCT NO. VER. Data varies depending on the type of ROM or software version 18Eh Check Sum 190h I/O use support data Joystick for Master System : 0 Tablet : T Joystick : J Control Ball : B Keyboard : K Paddle Controller : V Serial (RS232C) : R FDD : F Printer : P CDROM : C 1A0h ROM capacity Start Address, End Address $00 00 00 00, $XX XX XX XX 1A8h RAM capacity Start Address, End Address $FF 00 00 00, $FF FF FF FF 1B0h External RAM Data When no external RAM is mounted, fill the address by a space code and when it is mounted follow the following: 1B0h: dc.b 'RA', %1x1yz000, %00100000 1B4h: dc.l RAM start address 1B8h: dc.l RAM end address x 1 for BACKUP and 0 If not BACKUP yz 10 if even address only 11 if odd address only 00 if both even and odd address 1BCh Modem Data If corresponding to MODEM, fill it by space code and if not, follow the following: 1C8h Memo ASCII scratch area? 1F0h Release Country JAPAN J USA U EUROPE E Be sure to input a space code in the unoccupied 1 ~ 7, 9 ~ 13 space