http://nestopia.sourceforge.net/

Version 1.25 released. Here's what's new:

Windows Fixes:
-Configuration file parse error after cheats were saved.
-Unquoted executable name on the command line.
-Archive filenames using non-ascii characters.
-File association bug.
-Katakana characters when using the 'clipboard-to-NES-screen' feature.
-Slight texel-to-pixel mapping inaccuracy.


Emulator Additions:
-NTSC composite video emulation. Requires a fast computer. Implementation by Blargg and NewRisingSun.
-Mapper 27.


Emulator Changes:
-Took out the database names. Too many errors.


Emulator Fixes:
-Mapper 16 IRQ timing. Fixes SD Gundam Gaiden - Knight Gundam Monogatari 2 - Hikari no Kishi.
-King of Fighters 99 (no-frame-IRQ hack).
-Save state errors with MMC3 games.
-Blitter producing garbage on screen (rare occasions).
-Some ISO C++ misstakes.