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70 lines
2.2 KiB
Plaintext
70 lines
2.2 KiB
Plaintext
Known issues
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- Madou Monogatari I (Game Gear)
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Has rendering issues due to video timing being different between SMS and GG.
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See :
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https://github.com/drhelius/Gearsystem/commit/71b7252831e8a50d94a11b491431b52f6c3af8d4
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Partially fixed as of f0192681f2daa9d1f225f891119e26dbc4969a54, but
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it is still not correct when the sprite moves into the background.
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- 93c46 EEPROM Support
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Used by a few Game Game games.
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Majors Pro Baseball
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Nomo's World Series Baseball (J)
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Pro Yakyuu GG League (J)
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World Series Baseball [A]
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World Series Baseball [B]
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World Series Baseball 95
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Implementations :
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https://github.com/OpenEmu/CrabEmu-Core/blob/master/consoles/sms/mapper-93c46.c
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World Series Baseball '95 and World Series Baseball will hang up without at least a stub in place.
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- LCD Persistence issues
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Some games take advantage of the Game Gear's poor LCD screen.
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If this behaviour is not replicated then it results in some heavy flickering.
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Here's a list of affected games :
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- The Adventures of Batman & Robin (Disappearing HUD)
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- Super Monaco GP 2 (Titlescreen)
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- Space Harrier
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- Ninja Gaiden (affects 3rd & 2nd act)
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- Halley Wars
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- MLBPA Baseball
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- Power Drive (unreleased prototype)
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- James Pond 3 (Overworld level text)
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MAME has an implementation of LCD persistence here (first appeared in MESS 0.135) :
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https://github.com/mamedev/mame/blob/08cd6110268f9363e6c2cb9f0b6d92c00dadfbd6/src/mame/machine/sms.cpp#L1557
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- Graphics Board
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http://www.smspower.org/forums/15032-SegaGraphicBoardV20ReverseEngineering
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No support for it given how recent it is. MEKA supports this so i should take a look at it.
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- Space Gun
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http://www.smspower.org/Development/SpaceGun-SMS
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I need to add back Lightgun emulation.
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The code is left turned off for now because most games also support the controllers but this game requires the light gun.
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There's also an issue with memory mapping. I believe we don't suffer from that bug ?
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- Sports Pad
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Not currently implemented.
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In addition to that, a bug has been discovered where the game would sometimes read the input from player 1 for player 2.
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Do we really want to implement this bug though ???
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https://github.com/mamedev/mame/commit/33c5196a429d0afa801caac3ad24a76bf0ac273d#diff-cafb9b1c2517c95f421c776c3ec74e56
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