Stella is an Atari 2600 VCS emulator released under the GNU General Public License (GPL). It allows you to play your favorite Atari 2600 games on your PC. Features: High speed emulation using optimized C++ code Supports high quality sound emulation using code derived from Ron Fries' TIA Sound Emulation library, including stereo sound support Emulates the Atari 2600 Joystick Controllers using your computer's keyboard, joysticks or mouse Emulates the Atari 2600 Keyboard Controllers using your computer's keyboard Emulates the Atari 2600 Paddle Controllers using your computer's mouse, keyboard or joysticks Emulates the Atari 2600 Driving Controllers using your computer's keyboard, joysticks or mouse Emulates the CBS BoosterGrip Controller using your computer's keyboard, joysticks or mouse Emulates the Sega Genesis Controller using your computer's keyboard, joysticks or mouse Emulates CX-22 / CX-80 style trackballs and Amiga Mouse using your computer's mouse Emulates Spectravideo CompuMate system using your computer's keyboard, including mapping of CompuMate 'Backspace', 'Space' and 'Enter' functionality to to the actual keys on your keyboard Emulates the Mindlink Controller using your computer's mouse Support for real Atari 2600 controllers using the Stelladaptor and 2600-adaptor/2600-daptor II Support for the speech portion of a real AtariVox device connected to your PC using a USB adaptor Supports all known bankswitching schemes (let us know if there's one we missed) Supports ROMs stored in ZIP and GZIP format, as well as the usual A26/BIN/ROM formats Full system state save/load functionality Built-in extensive debugger, including static analysis with the Distella disassembler and dynamic analysis at runtime by tracking code/graphics/data sections, and generation of DASM-compatible disassembly files Emulation of CRT TV systems using Blargg filtering, including presets for several common TV outputs (composite, S-video, RGB, etc), and ability to fully customize many attributes (contrast, brightness, saturation, gamma, etc). Built-in ROM database with information compiled by RomHunter Locating Game Images (ROMs) Search around the internet and find ROM images to download (websites such as AtariAge and AtariMania/RomHunter may be useful) You can purchase the Atari 2600 Action Packs by Activision and use their ROM images WARNING: It is illegal to use ROM images of games that you do not actually own since these games are still copyrighted.