puNES v0.81 is released. puNES is a NES emulator. Currently the program supports mappers 0, MMC1, UNROM, CNROM, and the sound is available. It uses the SDL libraries and it works on both Linux and Windows.

puNES v0.80 Changelog

Added option "TV Aspect Ratio" in the video settings that simulates the screen format of the old televisions (4:3). Added option "Interpolation" which enables, regardless of the type of filter used, the bilinear interpolation of the image. Set to "1" the default value for the delay of the turbo buttons. Fixed a memory leak in version D3D9. Edit : Updated SDL versions (linux and windows) for a fix of a small bug with overscan in fullscreen mode. Anyone who has downloaded the version before Wed Mar 19, 2014 6:03 am, please download it again.

Download: puNES v0.81 for win32
Download: puNES v0.81 for win64
Source: Here