Nemulator v4.0 is released. Nemulator is win32 NES emulator.nemulator 2.0 uses DirectX 10, therefore Windows Vista or Windows 7 is required. If you receive an error message stating that d3dx10_33.dll is missing, please download the latest DirectX 10 update from Microsoft at microsoft.com. You need a lot of horsepower (probably a dual-CPU/core system) to run the menu at full speed.

nemulator v4.0 Changelog:
- Sega Master System emulation

Download: Nemulator v4.0
Source: Here