![]() With the new VMM implementation, we now more accurately implement and respect Switch’s memory layout. This could result in run-away host memory allocations that were never actually possible on a real Switch. In short, this old implementation would arbitrarily allocate and map host (your PC) memory on the fly, without respecting the guest (Nintendo Switch) memory layout. Citra’s approach has served us well in getting the emulator working, but it was really designed for a much simpler system that did not scale to the needs of Switch. ![]() Previously, yuzu used a rather simplified approach to the VMM, based on Citra 3DS Emulator. This is a part of the emulator that uses High Level Emulation (HLE) to replicate functionality of the Switch’s "Horizon" Operating System. This was accomplished by rewriting yuzu’s Virtual Memory Manager (VMM), the software component that allocates, maps, and frees memory that Switch games use. The latest improvement revealed only a few hours ago promises to essentially cut the emulator's RAM usage in half, thanks to a complete rewrite of yuzu's memory management code. ![]() Yuzu, the Nintendo Switch emulator on PC, continues to be developed at neckbreaking pace.
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