MAME 0.22

Release Date

MAME 0.22 was released on 25 May 1997.

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

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

Rick Wirch submitted an optimization to cpu_readmem and cpu_writemem, resulting in a decent speed boost.
Brad Oliver fixed a number of bugs affecting non-Intel ports and also suggested several ways to improve portability in general.
Paul Berberich improved the colors in Congo Bongo, though they are still not correct.
Thanks to information from Ivan Mackintosh, the colors in Centipede (revision 3) were fixed.
Nicola Salmoria added support for the cars in Rally-X (Midway)'s radar display.
Nicola Salmoria fixed the colors in Bomb Jack (set 2) et al. They should now be 100% correct.
Bugs related to inserting credits in Elevator Action and Turtles were fixed.
Preliminary sound support was added to Elevator Action and Jungle King (Japan), though the Tarzan yell sample is missing for the latter.
Thanks to Virtu-Al, Time Pilot now has 100% correct colors.
Some sprite priority issues in Frogger (Sega set 2) and clones were fixed.
High-score saving support was added to Amidar, Frogger (Sega set 2) and their clones.
A number of bugs with various Space Invaders clones were fixed.
The cpuintrf struct was modified to support the aforementioned cpu_readmem and cpu_writemem optimizations.
Several (unspecified) drivers had miscellaneous minor fixes.
Bernd Wiebelt provided support for VESA 2.0 linear and banked extensions, as well as faster pixel-doubling functionality via inline assembly.