yon escreveu: Parece que convertendo as roms de game gear pra .sms, ele roda
http://www.assemblergames.com/forums/showthread.php?45191-Will-converted-GG-ROM-s-work-with-the-Everdrive-MD
Ultima resposta:
actually, result is exactly the same if you rename a gg ROM to .sms and load it in an emulator or the MD and MS Everdrive: START button does not work and color palette will be wrong because Game Gear use 12-bit color pixels while Master System or Mega Drive in MS compatibility mode is 6-bit (even Mega Drive is only 9-bit)
This is hardware limitation that cannot be fixed hence why the only way to get GG games somehow working is to manually hack the ROM so that color RAM writes are converted to 6-bit format and START buttons reads remapped to an existing button combo or into PAUSE button interrupt handler.
There is also the problem that GG games assume a 160x144 pixels screen area so even if you will be able to see more on a TV screen (256x192), the outside area was not supposed to be visible so sprites are generally not able to move into there and it might display garbage, depending on how the game was programmed.