HalfNES v0.022 is released. HalfNES is an open-source emulator for the Nintendo Entertainment System, written in Java. Currently, it only runs as a standalone Java SE application.

Current Features:
- Supports Mapper 0,1,2,3 games
- SRAM saving works now
- Accurate sound core
- Cross-platform portable

HalfNES v0.022 Changelog:

Wow, it's been a while. Added Player 2 controller support, can remap the buttons in the settings.txt file. Improved rendering: Gauntlet runs full speed on my computer when it didn't before, the status bars of Zelda II and Ninja Gaiden now look right, in general performance is about 20 percent better because the drawing code is more efficient. Back to the Future works but has random unexplained glitches. Made a few additional tweaks to the MMC3 code, now Might and Magic works but SMB3 is unchanged. Also eliminated a potential crash after attempting to load a game with an unsupported mapper. Changes to the audio code: Excitebike and a lot of other early games that used the sweep feature on the square wave channels should be correct now, Super Mario Brothers finally sounds right. Also, this works.

Download: HalfNES v0.022
Source: Here