GameGear games that run in Master System Compatability Mode dont work

spiritualized1997 / openFPGA-GG

Sega Game Gear core for openFPGA on Analogue Pocket

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GameGear games that run in Master System Compatability Mode dont work #12

Open Kypck opened 1 year ago

Kypck commented 1 year ago

Every GG game that runs in Master System Compatibility Mode I tested (and own a copy of) does not work correctly:

Mikey Mouse Castle of Illusion (J) / (US/EU)
Predator 2
Prince of Persia

Looks like color palette and resolution are off. All work fine as physical copy with the GG adapter tho.

vanfanel commented 7 months ago

I can confirm this issue. SMS compatibility mode is definitely broken on the core.

kwyxz commented 4 months ago

Confirming this even with the latest versions of Analogue OS. It looks like the core cannot handle straight SMS conversions and displays palettes weird.