This is an experimental emulator, currently in early stages of development, that gdkchan started last year.

The main difference from other emulators is that it is written in C#, instead of other languages like C++ where emulators are usually written.

It translates the Arm64 machine code into the .NET intermediate language (MSIL), which in turn is transformed by the .net JIT (RyuJIT) into x86 machine code.

https://gbatemp.net/threads/experime...r-in-c.495982/