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Member Since 20 Nov 2008
Offline Last Active Private
And the new Dr Who is.... Looking better than the current incumbent Updated 04 Aug · 0 comments

About Me

7800 Homebrew games in development
I've been a 7800 developer since April 2009 when Wasp! was announced using my "C" games development library.

This is my current list of 7800 games in development :-

Harry's Hen House (Stock machine)

Apple Snaffle (XM mandatory)

Halloween themed game (no release name yet) (XM mandatory)

Outpost 26 (XM mandatory)

Dungeon! (XM mandatory)

Fruitarian (XM mandatory)

7800 Completed homebrew games
This is the list of games that have been completed and released on cartridge :-

Wasp! (Stock machine)

Worm! (Stock machine)

7800 eXpansion Module (XM)
The XM team was formed around Curt Vendel in the summer of 2010 to develop an expansion system for the Atari 7800. The XM adds the following to a stock 7800 :-
  • System BIOS
  • 128K of bank switched RAM
  • HSC BIOS and 2K of non-volatile memory for high score game saves
  • POKEY and a YM2151 for arcade quality audio
  • SIO and XEGS keyboard connectors for A8 peripheral compatibility (software required)
  • NES like mappers
  • PIA (optional) for internal custom expansion
The XM can be purchased from the Legacy Engineering Group store. For more information on its development click here and for a list of games, click here.

7800 BBC Micro game ports
First developer to port a BBC Micro home computer game to the 7800.

Development thread for Tempest (WIP) (XM mandatory)

7800 Demos
Christmas 2012 eCard (Stock machine)

7800 Graphics modes
G2F - 4 colour changes per scan line in 2BPP.
160C - 169 colours on screen at once.

7800 Game programming tools
a78psd - A utility that converts ProSystem emulator *.sav files into human readable form. It will also analyse the Display List List (DLL) entries and Display List (DL) "headers".
Colour picker - A utility for displaying all 256 colours on a 7800 simultaneously.
NTSC bitmap - A *.gif containing the colours taken from ProSystem.

7800 Game cartridge availability
You can purchase Wasp! from the AA store here.
You can purchase Worm! from the AA store here.

7800 Game reviews
Wasp! was reviewed in edition 66 of Retro Gamer here and scored 72%.
Worm! was reviewed in edition 76 of Retro Gamer here and scored 79%.

Miscellaneous PC utilities
SaveKey - Handles data upload and download to SaveKeys.
a52mm - Atari 5200 Ultimate SD Cartridge Manual Mangler.

Hardware development
GB-XC1 - PlayStation controller interface.

Mattel Intellivision games in development
These are my current Intellivision games in development :-

Apple Snaffle

Mystery Castle




AC2013 - Speed coding contest

Mars mini games

Rescue on Terra Five

Next Street - Halloween 2013

Hardware development
Multi-cart - microSD based multi-cart.

Atari Jaguar games in development
This are my current Jaguar game in development :-

Duckie Egg

Star Raiders


Atari Jaguar tech demos
Fractal generated terrain and voxel landscape :-

Mars Rover demo

Community Stats

  • Group +AtariAge Subscriber
  • Active Posts 7,738
  • Profile Views 62,590
  • Member Title 7800 Developer
  • Age Age Unknown
  • Birthday Birthday Unknown
  • Custom Status
    Busy bee!
  • Gender
    Male Male
  • Location
    North, England
  • Interests
    Atari 7800, 7800 XM, Intellivision, Jaguar, writing games on different platforms, software and electronics. I also own an Atari Mega 2, 520ST, Atari TT, Vader, Jr., several 7800s (NTSC and PAL), XEGS, 800XLs and a 65XE. My collection also includes a NES and most recently a Philips G7000.

Contact Information

  • Website URL Website URL  http://
  • GameGavel ID groovybee
2891 Excellent

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