iNES v4.2 is released. iNES is a program that emulates Nintendo Entertainment System (NES) and Famicom videogame consoles on your computer. It plays NES games on PCs, PocketPCs, Macs, Unix boxes, etc.

iNES v4.2 Changelog:
Improved 6502 clock precision.
Added support for 100+ undocumented 6502 instructions.
Increased VBlank interrupt delay from 4 to 5 cycles (Kart Fighter).
Now rendering sound in 1ms increments. Percussion effects became much better.
Now accurately emulating APU random noise generator.
Fixed sound channels defaulting to melodic sound after reinitializing sound.
Fixed APU register $400F emulation.
Optimized APU volume computation.
Added light gun emulation (Duck Hunt, etc).
Added support for Japanese Arkanoid paddle.
Added support for PowerPad.
Paddle fire button now returns 1 when pressed.
iNES will now automatically load GameGenie cheats from *.CHT files.
iNES will now automatically load patches from *.IPS files.
iNES will now automatically load palettes from *.PAL files.
Added support for Pro Action Replay cheats.
Added the Cheat Hunter tool to find your own cheats.
Added functions for load and save GameGenie cheats.
Added support for "wrapped" DiskSystem files that come with a 16-byte FDS header.
Now resetting DiskSystem to floppy side A on startup.
Added mapper #12 (Dragon Ball Z 5).
Fixed mapper #19 (more Namcot games).
Added mapper #26 (Konami VRC6 with A0/A1 bits flipped).
Added mapper #36 (TXE/MicroGenius).
Added mapper #37 (Super Mario Bros. + Tetris + Nintendo World Cup multicart).
Added mapper #38 (Crime Busters).
Added mapper #41 (Six-in-One multicart).
Added mapper #42 (hacked FDS games).
Added mapper #44 (7-in-1 multicart).
Added mapper #46 (Rumblestation 15-in-1 multicart).
Added mapper #47 (Super Spike V'Ball + Nintendo World Cup multicart).
Added mapper #70, used by Bandai and Taito's Arkanoid 2.
Fixed mapper #71 (more CodeMasters games).
Added mapper #72 (Jaleco JF-17 chip).
Added mapper #73 (Konami VRC3 used in Salamander).
Added mapper #75 (Konami VRC1).
Added mapper #87, used in Japanese Goonies version.
Added mapper #88 (Quinty, Namcot Mahjong 3, Dragon Spirit).
Added mapper #89 (Sunsoft-2 chip in Tenka no Goikenban: Mito Koumon).
Added mapper #92 (Moero!! Pro Soccer, etc).
Added mapper #93 (Sunsoft-2 chip in Japanese Shanghai, etc).
Added mapper #97 (Kaiketsu Yanchamaru).
Added mapper #99 (VS System games).
Added mapper #101 (Urusei Yatsura – Lum no Wedding Bell).
Added mapper #107 (Magic Dragon).
Added mapper #112 (stripped down MMC3 used by Tengen and Namco).
Added mapper #113 (American Video Entertainment Nina-03/06 boards).
Added mapper #140 (Jaleco JF-11/JF-14 boards).
Added mapper #144 (Death Race).
Added mapper #152 (Taito's Arkanoid 2).
Added mapper #163 (Final Fantasy VII, Pokemon Yellow).
Added mapper #164 (Final Fantasy V).
Added mapper #193 (TC-112 chip in Fighting Hero, War in the Gulf).
Added mapper #206 (Tengen MIMIC-01, Namcot 118).
Added mapper #210 (Family Circuit '91, Dream Master, other Namcot games).
Added mapper #225 (52 Games, 58-in-1, 64-in-1 multicarts).
Added mapper #226 (Super 42-in-1, 76-in-1 multicarts).
Added mapper #228 (Action 52, Cheetamen II).
Added mapper #232 (Quattro Adventure, Arcade, Sports by CodeMasters).
Added mapper #240 (Jing Ke Xin Zhuan and Sheng Huo Lie Zhuan).
Added mapper #241 (Fan Kong Jing Ying).
Added mapper #242 (Wai Xing Zhan Shi).
Added mapper #243 (Honey Peach and Poker III).
Added mapper #246 (Fong Shen Bang – Zhu Lu Zhi Zhan).
Partially implemented mapper #227 (1200-in-1)

Download: iNES v4.2
Source: Here