So... how much of the NES does this emulate? As I understand it, it's pretty easy to get a basic 6502 core and a scanline renderer together enough to handle, sa

So... how much of the NES does this emulate? As I understand it, it's pretty easy to get a basic 6502 core and a scanline renderer together enough to handle, say, Super Mario Bros. but if you support all the timing corner-cases and memory-map chips and such, it gets to be pretty frustratingly complicated. EDIT: I should have looked more closely; looking into 'mapper.rs' reveals that it currently supports only the vanilla NES memory-map.