@TheMogMiner I read what you wrote about CD-i emulation and the difficulties faced; but my eye as drawn to you mentioning no dump for certain variants, etc. Are you sourcing them/trying to get them decapped or can the DU/me chip in cash or something?
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Others have a middle ground, with I/O handled by a 68HC05, and CD control and audio rolled into another ASIC called CDIC. That's the model that MAME currently emulates, for better or for worse.
With platforms like the NES, SNES, Megadrive and even later platforms, each game accesses the hardware in a different way, leading to more insight as to how the hardware works. When everything has to route through a system BIOS, you don't get that breadth of info.
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And that, really, is the problem with emulating the Philips CD-i: You can't derive any knowledge about the underlying hardware by throwing different games at it. You either make the BIOS happy, or you don't.
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I'm a bit confused. So, if you emulate only one of the players and the spec they conform to, does that mean all the games will work or are their games only built for specific players and their spec' interpretation?
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