Release Date

MAME 0.21 was released on 12 May 1997.


The known contributors for this version are, in first-name alphabetical order:

Specific Contributions

The known contributions for this version are, in the order specified in the whatsnew:

  • Virtu-Al submitted full color support for Amidar and Turtles.
  • The colors in Arabian (Atari) were corrected.
  • A bug where star backgrounds would slow down when frameskipping was fixed.
  • The music tempo in 1942 (set 1) was fixed.
  • The color strips in Space Invaders were adjusted slightly.
  • Mad Planets no longer crashes with its updated sample set.
  • Proper colors were added to Warp Warp (Rock-ola set 1).
  • The DIP switches in Elevator Action were corrected.
  • Dark Schneider submitted a core for the Motorola 6809 CPU.
  • Nicola Salmoria added busy-wait detection to the Zilog Z80 CPU core.
  • Volume adjustment was added via the "MasterVolume" configuration parameter.
  • When bringing up the F4-based tile viewer, DIP switch, or pause screens, audio output is now suspended.
  • The user can now redefine the keys that MAME uses.
  • The structure used by game samples was modified slightly.

Game Support

MAME Firsts

  • First version of MAME to support the Motorola 6809 CPU core.
  • First version of MAME to support redefinable controls.
  • First version of MAME to support a game with an unknown year.