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Yabause / yabause

Yabause is a Sega Saturn emulator.
http://yabause.org
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Sega Flash Volumes #217

Open paul-met opened 8 years ago

paul-met commented 8 years ago

After starting any demo game from any versions of Sega Flash Demo CD I get a black screen.

cyberwarriorx commented 8 years ago

I'm assuming you're running without a bios? With a bios it appears to work fine for me.

paul-met commented 8 years ago

Correct. But why does not work without BIOS?

cyberwarriorx commented 8 years ago

It has to do with how the demos are booted. Normally when a game boots it relies on several functions from the BIOS. With the emulated BIOS we do all the boot up work internally, setup basic pointers that games require, and then boot the game just after the sega license screen. In the case of Sega Flash they use a quirky trick where they load up a secondary IP.BIN and first program and try to boot the IP(sega license screen), this ends up failing since the IP code looks up code from the bios and can't find it.

BenjaminSiskoo commented 8 years ago

Interesting :)