DMG-CPU-Inside

The furthest I've seen publicly is the original Playstation ASICs. http://psxdev.ru/ [Russian Language] Similar in time to the playstation ASICs (and similar design in sort of a soup of standard cells on a CMOS process), but at a gate count similar to Ken's fantastic work here on the 8086 is the work reversing the Gameboy SoC: https://github.com/furrtek/DMG-CPU-Inside Chip manufacturers, professional chip reversers, and academic institutions have the tooling to take chips apart at varying levels of granularity all the way down to atom by atom if necessary.

A few months ago the whole GameBoy SoC (DMG-CPU) was reversed engineered in the same way [1], except for the CPU part - this means the schematics include pixel processor unit, timer, serial port, IRQ controller, etc. However, it seems that the CPU itself is pretty straight-forward to emulate anyway, since Gekkio, author of the mooneye-gb [2], figured it's a variant of a well-documented SM83. Anyway, reverse-engineering efforts like this are pretty exciting, as they should allow to create a 100% accurate emulators - and we know they are accurate not only because all the games are running as expected, but because they are based on the actual hardware design (which is even better than the producer's specification). GB is not a complex piece of hardware, in comparison to eg. SNES, but there are some emulation issues really hard to tackle, esp