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 2600 Homebrew Source Code | Original 2600 Game Source Code | Homebrew Demo Source Code | Other original 2600 Source Code | Original Atari 7800 Source Code
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 Homebrew Source Code
 
Below is a collection of Atari 2600 source code from homebrew authors.  Links to the original download location are included when available.

My most recent additions (on 12/31/2013):  Elevators Amiss by Bob Montgomery, Star Castle by Chris Walton & Thomas Jentzsch, Hunchy 1k by Chris Walton, Halo2600 by Ed Fries, Blinky Goes Up by Jans Hermanns, and Muncher by wickeycolumbus. | (on 1/23/2014) Digital Clock by Chris Cracknell

Source  

Description

 Link
Blinky Goes Up   Blinky Goes Up by Jans Hermanns Link
Digital Clock   Digital Clock by Chris "Crackers" Cracknell Link
Elevators Amiss   Elevators Amiss by Bob Montgomery (1-17-2008) Link
Halo2600   Halo 2600 by Ed Fries Link
Hunchy 1k (v0.3)   Hunchy by Chris Walton (4-24-2005) Link
INV+   INV+ by Erik Mooney and Piero Cavina Link
Muncher   Muncher by wickeycolumbus Link
RAMCombat   wickeycolumbus' combat clone Link
RAMFrogPond   wickeycolumbus'  frog pond clone Link
Pong256b.asm   wickeycolumbus' 256 byte Pong clone Link
Cave1k_018   Cave1K (Written by Thomas Jentzsch) Link
Climber5.asm   Climber5 by Dennis Debro Link
DarkMage.asm   Dark Mage (by Greg Troutman) Link
Gunfight.zip   Gunfight (by Manuel Polik) Link
Jammed.asm   Jammed (Written by Thomas Jentzsch) Link
OkiDoke.zip   Okie Dokie by Bob Colbert Link
Skeleton.zip   Skeleton (by Eric Ball) Link
SpaceTreatD.zip   Space Treat Deluxe (By Fabrizio Zavagli) Link
Splat_034.asm   Splatform (Written by Thomas Jentzsch) Link
Squish 'Em.zip   Squish 'Em by Bob Montgomery Link
Star Castle 149   Star Castle by Chris Walton & Thomas Jentzsch Link
StarFire.zip   StarFire (by Manuel Polik) Link
UltraSCSI.asm   UltraSCSIcide (by Joe Grand) Link
WarWorm.zip   Warring Worms (by Baroque Gaming) Link

 

  
 
     
 
 Original Atari 2600 Game Source Code
 
Below is a collection of original Atari 2600 source code as written by the original developers in the 1980's.
 
Source  

Description

 Link
PolePosition.zip   Pole Position source Link
Dragonfire.asm   Original Dragonfire Source Link
Moonsweeper   Original Source of Imagic's Moonsweeper Link
Riddle-pal.asm   Riddle of the Sphinx (Dis. by Thomas Mathys) Link
Solaris.asm   Atari's Solaris Link
StarWarsTAG   Parker Brother's Star Wars: The Arcade Game Link
DesertFalcon   Original Desert Falcon Source Link
DarkChambers   Original Dark Chambers Source Link
Crystal Castles   Original Crystal Castles Source Link
Cracked   Original Cracked Source Link

 

  
 
     
 
 Homebrew Demo Source Code
 
Below is a collection of progamming demos by homebrew authors.  They were pulled from the Stella list and from AtariAge, links to the original file locations are provided when available.
 
Source  

Description

 Link
3_Bars.asm   3 Bars Background Demo (by Christian Bogey) Link
3dcopper.zip   Rotating Copper Bar Demo by SmileyDude Link
11inv.asm   Thomas's space invaders demo shows 11 invaders a row Link
Alpha.asm   Stella Mega-Demo Compilation (By Manuel) Link
AOTMAFOS.asm   Space Shooter Demo (by by Maciej Kozlowski) Link
AsymPlay.asm   Asymmetrical Playfield Demo (by Christian Bogey) Link
Asym2scrol.asm   Asymmetrical Playfield with 2 Scrolls (by Christian Bogey) Link
BasicBack.asm   Basic Colored Background Demo (by Christian Bogey) Link
BackScroll.asm   Scrolling Background Demo (by Christian Bogey) Link
BigSpriteDemo.asm   Big Sprite Move Demo Link
Boing26.asm   Amiga Boing Demo - Rob Kudla Link
Boing26upd.zip   Amiga Boing Demo - Rob Kudla (updated by D. Galloway) Link
clown_demo.asm   Hi-rez Clown img uses 48pixel sprite & pseudo-interlacing Link
Colors.asm   Color Tweaker by Brian Watson Link
DeathDerbyDemo.asm   Death Derby by Glen Saunders & TJ Link
GasGaugeDemo.asm   Gas Gauge Demo (by Joe Grand) Link
Ghost.asm   Milquetoast the ghost Demo (by Kirk Israel) Link
GravityBall.asm   Gravity Ball Demo (by Rob Mundschau) Link
grid2.asm   Grid Demo: Hi-rez scrolling grid - covers entire screen Link
Heart_Color.asm   Heart with Colors Scrolling Demo (by Christian Bogey) Link
HTDAP.asm   Nick Bensema's 'How to draw a playfield' Link
INVbeta.asm   Beta of INV from Stella List Link
INV3.zip   INV3 demo showing that an 11 x 5 grid of sprite invaders is possible (from Erik Mooney) Link
JoustPong.asm   Joust Pong Beta from the Stella List Link
LeftScroll.asm   Symmetrical Playfield, scrolls left  (by Christian Bogey) Link
Maze003.zip   Maze003 Demo (by Andrew Schwerin) Link
MirrorPlay.asm   Mirrored Playfield Demo (by Christian Bogey) Link
MovingMissile.asm   Moving Missile Demo from the Stella List Link
PaddleTest.asm   Paddle Test Demo by Joe GRand Link
PlayfieldPrimer.asm   Nick Bensema's Asymmetrical Playfield Primer Demo Link
PongDemo.asm   Pong Demo from vdub_bobby Link
RightScroll.asm   Symmetrical Playfield, scrolls right  (by Christian Bogey) Link
River Rampage   a tech demo (Erik Mooney) showing some amazing visuals Link
Sfcaves.asm   Caves Demo by Mark De Smet Link
SpaceBeam.asm   Space Beam Demo by Manuel Link
SpaceBattle.asm   Space Battles beta by Dave Neuman Link
SymmPlay.asm   Symmetrical Playfield Demo (by Christian Bogey) Link
Zelda Demo   A demo that shows almost NES-like graphics for Legend of Zelda (by Erik Mooney) Link

 

  
 
     
 
 Other Original Atari 2600 Source Code
 
Below is a collection of original Atari 2600 source code that isn't related to a released game.
 
Source  

Description

 Link
Bankswitching.zip   Bankswitching Demos & templates from wickeycolumbus (Rick) (updated 12/2009) Link
ColorsPAL.asm   Disassembly of 'Colors PAL' prototype Link
Monitor.asm   Stella H/W Monitor Source - posted by Curt Vendel Link
RedBlue.asm   Red vs. Blue Demo (Todd Frye) - Dis by Dennis Debro Link
SCbootstrap.asm   Supercharger Demo Unit Bootstrap Code Link
Skeleton.asm   VCS Skeleton Kernal Source - posted by Curt Vendel Link
 
 
     
 
 Original Atari 7800 Game Source Code
 
These are original, commented source code files from the original Atari 7800 developers.
 
Source  

Description

 Link
Centipede   7800 Centipede Source Code  
Commando   7800 Commando Source Code  
Crossbow   7800 Crossbow Source Code  
Dig Dug   7800 Dig Dug Source Code  
Food Fight   7800 Food Fight Source Code  
Galaga   7800 Galaga Source Code  
Hat Trick   7800 Hat Trick Source Code  
Joust   7800 Joust Source Code  
Ms. Pac-Man   7800 Ms. Pac Man Source Code  
Robotron   7800 Centipede Source Code  
Desert Falcon   7800 Centipede Source Code  
Super Stunt Cycle   7800 Super Stunt Cycle Source Code  
Xevious   7800 Xevious Source Code  
Base 7800 OS PAL   PAL 7800 OS  
Base 7800 OS NTSC   NTSC 7800 OS