Nemulator v2.1.3 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 v2.1.3 Changelog:
- Four-screen mirroring fixes. Rad Racer 2 works correctly now (if it doesn't, your ROM most likely has the wrong mirroring info in its header; try another copy).
- Support for SUROM boards (Dragon Warrior III and IV). Since the iNES format doesn't provide enough info to identify these boards, the mapper_variant option needs to be set to 1 for them in nemulator.ini (GoodNES ROMs are already configured).
- SRAM wasn't being saved on reset; fixed.
- Compiled with profile-guided optimization (PGO), resulting in big performance improvements/lower CPU utilization.
- Support for monitor refresh rates other than 60Hz (see timer_sync option in nemulator.ini).

Download: Nemulator v2.1.3
Source:Here