With the 7800 expansion Module (XM) due to be shipping in the near future, I thought it might be useful to put together a comprehensive list of games that utilize the XM's features. Since not all who will be buying the XM will be 7800 veterans, having one will help a lot of people out.
For those not in the know, the 7800XM is an hardware add-on for the Atari 7800. In a nutshell, it plugs into the cartridge port of the 7800 and acts as a pass-through device. It is compatible with existing 2600 and 7800 games and and adds additional features for 7800 games programmed to use them. The XM comes with the following features:
- High Score Cart (HSC) - The High Score Cart feature saves and stores player high scores from compatible games. Scores will be saved even if the console is turned off. Some original 7800 releases are compatible with this feature as it was a product that Atari planned but never released. High score cart games (that do not use the Music/RAM features) will work in a 7800 without the XM module, though high scores are not saved without it. For the moment, this feature is not available in PAL (available in Europe) games.
- POKEY/YAMAHA - Games with this feature utilize the XM's POKEY and/or Yamaha YM2151 sound chips for enhanced music and sound effects. The POKEY sound chip was developed at the same time as the 7800 and was intended to be added to 7800 game carts for enhanced sound beyond what the 7800's native hardware could produce. Due to Atari budget cuts, only the original 7800 games "Ballblazer" and "Commando" were released with it. The Yamaha YM2151 is an 8 channel FM sound chip used in some arcade machines in the mid to late 1980's. While never used in an Atari console, it adds the possibility of more accurate arcade sound. Games that use XM POKEY/YAMAHA will not work in a 7800 without the XM (unless otherwise noted).
- RAM - The XM contains an additional 128KB of ram for use in creating enhanced graphics pallets, additional sprites, larger levels and the like. Games that use XM RAM will not work in a 7800 without the XM.
- Expansion Ports - The XM has two expansion ports, a SIO Port and a 15 pin expansion port. The ports are intended for various add on projects such as keyboards or storage devices. The XM is confirmed to be XEGS keyboard compatible, though so far, only a tech demo demonstrating the keyboard working on the XM has been presented. (The XEGS was a console/computer hibred released by Atari in the late 1980's.)
- Pass-through Functionality - The XM is designed as a pass-through device, meaning that once it is plugged into your 7800, you can leave it in and play both 2600 and 7800 games without ever removing it. The cartridge guide has been modified in the XM to allow certain 2600 games that never fit properly in the 7800 to fit in the XM. Most, though not all 2600 games will fit into the XM.
Updates will be made as more information appears.
LAST UPDATED:
April 13, 2012 - Rip-Off added/Released
February 9, 2012 - Scramble added/Released.
December 1, 2011- XEGS keyboard support noted as well as info on the pass-through functionality and compatibility with 2600 games.
November 9, 2011 - Added Meteor Shower. Added Ms. Pac Man 320. Added corrections for some in progress games
November 7, 2011 - Monster! Renamed to Outpost 23. CrazyBrix Released
October 15, 2011 - Monster! added (Groovybee announced it as an XM game)
October 12, 2011 - Moon Cresta added/Released - (HSC)
Totals (not including in progress games):
HSC games: 26
Music games: 1
RAM games: 0
Expansion port items/games: 0
In progress/Unreleased games: 13
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Legend:
HSC = High Score Cart Compatible
POKEY = uses POKEY music chip
YAMAHA = uses Yamaha music chip
RAM = uses XM RAM
EXP = uses XM expansion ports
DUAL = Can run in a 7800 without the XM. Music will default to original 7800 hardware without the XM. All HSC-only games are automatically DUAL.
Example:
Pac Man Collection Pokey – HSC / POKEY
Original 7800 Releases – (HSC compatible/DUAL)
- Asteroids
- Dig Dug
- Centipede
- Food Fight
- Galaga
- Joust
- Ms. Pac Man
- Robotron 2084
- Xevious
- Desert Falcon prototype
- Pokey Kong - POKEY - Donkey Kong music hack - (Complete - Awaiting testing)
- Asteroids Deluxe - HSC
- BeefDrop - HSC
- Beef Drop VE - HSC / POKEY / DUAL
- BonQ - HSC
- Crazy Brix - HSC
- Crazy Otto – HSC
- FailSafe - HSC
- Jr. Pac-Man - HSC
- Moon Cresta - HSC
- Meteor Shower - HSC
- Pac-Man Collection - HSC
- Rip-Off - HSC
- Scramble - HSC
- Space Duel - HSC
- Space Invaders - HSC
- Super Pac-Man - HSC
- Ms. Pac Man 320 - HSC / POKEY / DUAL? - (Complete/Awaiting testing)
- Pac man 320 - HSC / POKEY / DUAL? - (Complete/Awaiting testing)
- Pac Man Collection Pokey - HSC / POKEY / DUAL - (Complete/Awaiting testing)
- Super Circus AtariAge - HSC / POKEY - (Complete/Awaiting testing)
- Apple Snaffle - POKEY / RAM - (In progress)
- Arkanoid - HSC / POKEY? - (In progress/PAL version being adjusted)
- Dungeon! – HSC / POKEY / RAM - (In progress)
- Frenzy - Unknown - (In progress)
- Fruitarian - POKEY / RAM - (In progress)
- Froggie - HSC / POKEY / DUAL - (In progress/uncertain)
- Halloween - POKEY / RAM - (In progress)
- Outpost 23 (formerly Monster!) - POKEY / RAM - (In progress)
- Dig Dug hack - POKEY - Dig Dug music hack. - (Mentioned but status unknown)
- Unknown 2 controller based game - Unknown - (Mentioned but status unknown)
Pinout - Unknown- (Canceled due to technical issues)Warbirds - HSC / POKEY?- (Probably canceled [programmer banned])
- XEGS Keyboard compatible. No software support as yet.
Edited by Lendorien, Sat Apr 14, 2012 3:39 PM.














