Nintendulator 0.975 beta (2011/08/26) 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 (2011/08/26) Changelog:

Nintendulator now respects the NES 2.0 header values for PRG RAM and CHR RAM sizes more closely; their default maximum sizes have been updated from 64KB to 1024KB and 32KB to 256KB, respectively. The logic for setting banks will now obey these limits, so an NES 2.0 ROM which indicates zero PRG/CHR RAM will prevent you from mapping any; consequently, an NES 2.0 ROM with both zero CHR ROM and zero CHR RAM is invalid and will report an error when loaded.

Download: Nintendulator 0.975 beta (2011/08/26)
Source: Here