HalfNES v0.027.2 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 v0.027.2 Changelog:

perhaps THIS will solve the problems with Windows XP. (Last version worked ok on the first XP machine I tried, but not the second.)

Download: HalfNES v0.027.2
Source: Here