RockNES v5.54 has been released! RockNes is a Nes emulator for Windows and one of the best, heres whats new via emulation 64:

RockNES is a Nintendo (NES) emulator that supports total PPU emulation, total intelligent emulation (including VRCVI intelligent, used by some Japanese games), battery backed RAM, Famicom DiskSystem, VS Unisystem, and some 70 different mappers. In gain, RockNES includes lots of different video modes, as substantially as the ability to loading and economise your back at any stage. You can flush record movies of gameplay.

RockNES v5.54 Changelog:

[quote]
- Improved Famicom Disk System PPU IRQ timing (thanks Sour).
- Fixed "Skip Disk System license screen" option, working ok.
- Fixed scanlines in NSF mode (while playing a tune & drawing circles).
- Fixed version number in the file properties.
- Minor fixes and improvements./quote]

For: Windows

http://rocknes.web.fc2.com