Pretty cool, but it definitely can't quite keep up. Just tried the Legend of Zelda, and it lags with flickering horizontal lines (not drawing fast enough?) on both snes9x and original hardware (via FXPAK Pro).
Just to put the achievement into perspective, this is code written for a console with a 1.79 MHz 6502 running on a 3.58 MHz 65816 (a 6502 with 16-bit capabilities crudely bolted on) -- that it even runs anywhere close to native speed and with so relatively few bugs is a monumental achievement considering that even though the SNES will run 6502 code, the audio and graphics hardware, etc., are entirely different between the consoles and have to be emulated.
