Nintendulator 0.975 beta (2010/10/29) is released. Nintendulator is an open source Win32 NES emulator written in C (plus some assembly optimization). The original goal was to emulate the NES down to its hardware quirks; though it's fallen behind over the years, recent builds have caught up once again and can emulate certain behaviors most other emulators neglect to handle. However, this emulation precision comes at a price - a 1500MHz (estimated) or faster CPU is required to emulate at full speed.

Supported file formats include .NES, UNIF, FDS (fwNES format), and NSF. Mappers are handled using external DLLs, complete with extra sound channels for most games which provide them. Other notable features include writing to FDS images (by storing the differences in the SRAM folder), Game Genie support (limited to 3 codes), customizeable controllers (including 4 player), input movie recording and playback (with re-recording), AVI capturing, and a debugger.

Nintendulator 0.975 beta (2010/10/29) Changelog:
In order to improve usability (and likely improve compliance with any existing standards for program data storage on Windows), Nintendulator's savestates, SRAM files, and debug dumps are now stored within the current user's "My Documents" folder rather than within their roaming "Application Data" folder.

Additionally, the build configurations have been tweaked such that the ANSI version of Nintendulator can now be run properly on Windows 98 again (and possibly even Windows 95), for those inclined to do such a thing; it had apparently stopped working when I first changed it to store save data within the Application Data folder, appropriately enough.

Download:Nintendulator 0.975 beta (2010/10/29)
Source:Here