Keyboard Combiner fixes a problem with the MacOS' handling of input
from Apple Desktop Bus (ADB) and Universal Serial Bus (USB) devices,
especially keyboards. Normally, your computer can recognize the button
presses from only one keyboard or joystick at a time because pressing
a button on one device causes it to replace the buttons on other ADB
devices. Most of the time this is not a significant limitation but
during game play, it can be very annoying. Imagine a two player game
of Ambrosia's [Mars Rising][1] being played on a computer with an
Apple Adjustable Keyboard (which is actually two different ADB
keyboards). If one player is holding down a key on the keyboard part
to move left and the other player presses a key on the keypad part to
fire, the first player stops moving. A similar problem occurs when
playing games with both a keyboard and a joystick. Keyboard Combiner
allows your computer to recognize keyboard and button presses from all
the devices connected to your computer at the same time.

See also the [web page][2] for this software.

Compatibility
Architecture: 68k

Any Macintosh or Macintosh compatible computer running System 6.0.7 or
better with an Apple Desktop Bus or Universal Serial Bus port. These
systems range from the SE and to the latest PowerMac.

Keyboard Combiner may not work correctly with certain ADB devices. In
this case, the device will simply remain unaffected by Keyboard
Combiner options.

Keyboard Combiner does not affect joysticks that have special timing
options. The SideWinder has no special timing options and doesn't
require a patch.

A false error message may be generated after startup indicating that
the ChoiceStick driver could not be patched.

The Flightstick Pro patch may not work correctly in System 6.

Virtual PC may not function correctly with the "Combine Apple Desktop
Bus devices" option turned on.

  [1]: http://macintoshgarden.org/games/mars-rising
  [2]: http://sweetapp.com/keyboardcombiner/