puNES v0.57 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 v0.57 Changelog

Added FDS emulation (read and write, not sound yet).You need of the FDS bios rom located in one of these folders: 1) the working directory, 2) the folder where is the fds file, 3) "$HOME/.puNES/bios" on linux or "/puNES/bios" on Windows. The bios file must be called "disksys.rom" and must have a size of 8192 bytes. Added mapper 37. Corrected some bugs in the cpu emulation discovered thanks to test roms made by Bisqwit (http://nesdev.parodius.com/bbs/viewtopic.php?t=8738 and http://nesdev.parodius.com/bbs/viewtopic.php?t=8757). Fixed a bug that in some circumstances, when attempting to load a save state, it crashed the emulator.

Download: puNES v0.57 for Linux32
Download: puNES v0.57 for Linux64
Download: puNES v0.57 for win32
Source: Here