Welcome to BupSystem

BupSystem is an Atari 7800 ProSystem emulator. It was originally written to assist in the development and distribution of Rikki & Vikki, but can run most other software for the platform.

As of writing BupSystem is closed source and only available for Microsoft Windows.

This program is intended as a development tool for and preservation of the ProSystem architecture. While it can be used to run commercial software I will neither assist nor prevent users from doing so. You are on your own.

More information can be found in the included help file.

Emulated Hardware
  • Sally, Maria (NTSC or PAL), TIA, RIOT, and the BIOS
  • Mappers : 16K, 32K, 48K, SUPER, SOUPER, ABSOLUTE, and ACTIVISION
  • Expansion Modules : XBoard
  • Cartridge Audio : Pokey, BupChip
  • YIQ Color Generation
  • One and Two Button Joysticks
  • Light Pens and Light Guns

  • Gamepad Support
  • Sally and Maria Overclocking
  • Save States

Current Version
BupSystem 8-26-2019 Added :
  • Full Screen Mode toggle on double-click.
  • Upgraded to JoyFish v0.8.6.1.
Cleanup :
  • Improved keyboard navigation in dialogs, button focus and ordering is much friendlier.
  • Input assignment procedures can now be aborted by pressing Esc.
  • Full Screen Mode was overwriting the userís window dimensions.
  • EXFIX segment in SUPER cartridges wasnít enabled for *.a78 files.
  • AutoSave feature wasnít working if an XBoard was installed.


All content by Osman D. Celimli unless otherwise noted.
Not all of said content guaranteed to be useful. Some is probably quite old and dumb.
Oh my, here's a YouTube and Twitter.