Game Boy CPU isn't a Z80. What is it?

Discussion of programming and development for the original Game Boy and Game Boy Color.
lidnariq
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Re: Game Boy CPU isn't a Z80. What is it?

Post by lidnariq » Mon Feb 04, 2019 12:19 am

I mean, it's nice to muse, but Gekkio's evidence above is pretty hard to argue with.

tepples
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Re: Game Boy CPU isn't a Z80. What is it?

Post by tepples » Mon Feb 04, 2019 6:13 am

Oziphantom wrote:I also wonder which year it was exactly that MOS wisened up to Ricoh deception and was starting to hit Nintendo/Ricoh with "you owe us a lot of royalties you thieves" so moving to Sharp and not a MOS design was to safe guard them.
Yet Nintendo and Ricoh licensed the 65816 from WDC for the S-CPU in the Super NES. If you want a year, it was probably the Semiconductor Chip Protection Act of 1984.

Oziphantom
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Re: Game Boy CPU isn't a Z80. What is it?

Post by Oziphantom » Tue Feb 05, 2019 11:35 pm

Sure, that is WDC not MOS/CSG. Also we don't know when the actual internal discussions about CPU for each machine started.
MOS's claim in on a patent that the NES CPU infringes upon and not the "layout", however I would expect it to have been once the Matel NES came out and MOS people were aware of its existence more.

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