
  M-Audio Capture and Playback Adapter Device Driver and API Kit V1.03

  Congratulations on the purchase of your new M-Audio Capture and Playback
  Adapter for the IBM Personal System/2.  Included are device drivers
  and Application Programming Interfaces (APIs) that can be used for
  the development of audio and image applications under DOS, OS/2, and Windows.
  Both IBM OS/2 2.0 and Microsoft Multimedia Extensions are supported.

  Contents:

  Along with this README file your diskettes should contain the files
  MACPA1.ZIP and MACPA2.ZIP  These are self-extracting ZIP files containing
  the following directories:

   AUDIO -

    \AUDIODD -  Device drivers for the M-ACPA for both DOS and OS/2.
                Provides a hardware independent interface for low level
                control of both waveform audio and MIDI.  Also provides
                serialization of the M-ACPA so that it can be used in
                multi-tasking environments.

    \MAAPI   -  The Audio Application Programming Interface (AAPI) is a
                set of high level "C" functions intended to allow applications
                to add audio capabilities such as playing and recording
                with a minimum of effort.  The AAPI is file oriented and
                supports Audio Visual Connection and Microsoft RIFF
                WAVE file formats.  The AAPI supports DOS and OS/2.

    \WINDLL  -  A Windows device driver (DLL) that supports
                Microsoft's Multimedia Extensions.

   IMAGE -

    \JPEG    - JPEG (Joint Photographic Experts Group) is an industry
               standard for the compression and decompression of
               continuous tone still images. It consists of a baseline
               standard plus extensions.  This API supports the baseline
               standard.  Supports DOS, OS/2, and Microsoft Windows.

  Installation:

  Copy all the files from both diskettes into the subdirectory that you
  want the component files to reside in, make that directory your current
  directory and type:

  MACPA

  followed by the Enter key.

  This will install all directories and requires approximately three
  megabytes of disk storage.

  Each of the above directories contains a unique README file for quick
  reference and any additional installation instructions.

  See the file LICENSE.TXT on this diskette for licensing information.

  In the United States, technical support is available through the IBM
  Industry Support Center by calling 1-800-241-1620.  Outside of the United
  States contact your local IBM representative.

Enhancements\Fixes for Release 1.03:

\AUDIODD
  * OS/2 2.0
    - Virtual Device Driver support
  * PCM/MIDI
    - Concurrent operation of 8 bit PCM at 11k & 22k with MIDI synthesis
  * General MIDI support
    - Synthesizer now supports General MIDI voicing
    - SONG1 - SONG8 have been changed to work with General MIDI synthesizers
    - Synthesizer voices have been improved
    - Drum kit added to channel 10
  * Line in passthru support
    - Passes any line input to the line\speaker output when the device
      driver is idle.  Useful for directing the line output of other audio
      cards in the same machine to a single set of speakers or headphones.
  * 8k recording improvements
    - Less distortion and noise
    - 3db rolloff point for mono recording will be about 3450 hertz
    - 3db rolloff point for stereo recording will be about 3200 hertz
  * Playback of M-Motion digital audio files
    - 7875 and 31500 samples/second
    - mono and stereo
  * Playback of 48k digital audio files

\WINDLL
  * Microsoft Windows 3.1 support
  * Concurrent play of 8 bit PCM (11k & 22k) mono WAVE files with
    MIDI and auxiliary input
  * Overall performance improvements
  * Default control volume and balance values for WAVE and MIDI
  * Corrects a problem in the device driver interrupt handler that causes
    the system to hang if you exited Windows after playing WAV files and
    the restarted Windows and again tried to play WAV files without
    having rebooted the system in between these steps.
  * Corrects a problem with audio buffer capacity that causes certain
    applications such as Microsoft Video for Windows 1.0 to experience
    audio breakup on playback by adding a user customizable buffer
    control to the driver setup dialog box.
  * Corrects the Microsoft Multimedia Manufacturer and Product ID
    codes for compatibility with thos IDs registered with Microsoft.
  * Corrects the product identification string returned by the driver.
  * Updates the version of the driver to 1.03.

\JPEG
  * YYUV images with odd number of columns handled correctly
  * Restart interval MDU count with reset is now working
  * Last 8 bytes of non-optimized formats appears in decompressed output
  * Performance of data transfer is significantly faster

Refer to the README file in each directory for additional information.

