what is the TLB hack?

[Ocean]

It's hack, because it's not been implemented fully.

In general, Dolphin has a page directory. Your CPU tries to search a parallel in (virtual) memory page map.

If it succeeds (TLB_Hit), it uses that frame. If TLB_miss, it uses free, usable frame in your RAM (physical address).

It has been poorly implemented in dolphin source file memmap.cpp, so currently it is just listed as a 'hack'. But it's better than not having it at all.