/*=============================================================================
  Galaxy sound sytem documentation
  By: Carlo Vogelsang, Independent developer
=============================================================================*/

  ÄÄ- Internal revision no. 3.00á -ÄÄÄ Last revision at 19:29 on 14-11-1995 -ÄÄ

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                                MUSIC SYSTEM 
 			    DEVELOPER  DOCUMENTATION
                     Copyright (c) 1993-95 Carlo Vogelsang


  ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
  ³Û²± COPYRIGHT NOTICE ±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±²Û³
  ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
  ³ This doc. file, GALAXY.DOC is Copyright (C) 1993-95 by Carlo Vogelsang.   ³
  ³ You may not copy, distribute,  duplicate or clone this file  in any form, ³
  ³ modified or non-modified without permission of the author.By unauthorized ³
  ³ copying this file you are violating laws and will be punished. So don't   ³
  ³ do that and let us all live in peace..                                    ³
  ³                                                                     Carlo ³
  ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ


                                Legal disclaimer
                                ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ


  Carlo Vogelsang makes no warranty of any kind, either express or implied about
  this software or accompanied files/products. Carlo Vogelsang is not respon-
  sible for any personal, financial or positional losses or profits resulting
  from the use, posession or any other association with this product. Carlo
  Vogelsang can not be liable for any damages or profits resulting from the use
  of this software including damages for loss of business profits, loss of
  information, damages to any type of being, financial loss or inability to use
  this software. All trademarks used in this documentation are property of
  their respective owners.


                                  Introduction
                                  ÄÄÄÄÄÄÄÄÄÄÄÄ


  First of all thank you for using TùRùIùAùL's Galaxy Music System v3.00á
  It's a brand new rewrite of the old Galaxy Music Library used in the Galaxy
  Music player upto version 2.14. This is a complete NEW rewrite which means
  totally different replay routines, software mixing routines, higher mixing
  resolution, better sound. Now based on all state of the art principles known
  by the author after experimenting for over two years now. So by using the
  Galaxy Music System you will benefit from the experience and experimenting
  of the author. This includes a wide range of supported audio hardware, which
  has been tested and found working on numerous different systems.


                              Features and support
                              ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ


  As usual everybody wants to know about its key features, options, support
  and prestations :

    - Supports 32 bit protected mode DOS as well as 32 bit Win32.
    - Supports up to 32 sound channels, either thru software or hardware mixing
    - Supports music and/or simultaneous soundeffects, up to 32 channels max.
    - Supports soundeffects only, for playing big samples only.
    - Supports simultaneous use of CD-Audio playing AND digital output.
    - Supports full and partial auto detection, user setup also possible.
    - Supports 16 and 32 bit mixing resolution, for better dynamic resolution
    - Supports 8 or 16 bit output, 16 bit output needs appropriate hardware.
    - Supports up to 8 octaves, for maximum music composing/replaying quality.
    - Supports multi-sample instruments, for maxmium music quality.
    - Supports volume and panning envelopes, for professional composing.
    - Supports samples sizes up to as much (gus/awe) memory you might have.
    - Supports up to 48 Khz mixing-rates, depends on the hardware ofcoz.
    - Supports many different file formats including .S3M/.STM/.MTM/.MOD/.XM/.AM
    - Supports wide range of audio hardware, includes mixing type/rates :

      - SoundBlaster 1.0/1.5/2.0 and compatibles :

        + 8 bit mono output is supported, software mixing.
        + 4000 - 22050 Hz for SoundBlaster 1.0/1.5/2.00
        + 4000 - 44100 Hz for SoundBlaster 2.01+

      - SoundBlaster Pro 1.0/2.0 and compatibles :

        + 8 bit mono/stereo output are supported, software mixing.
        + 4000 - 22050 Hz for SoundBlaster Pro 1.0/2.0
        + 4000 - 44100 Hz for SoundBlaster Pro 3.01+

      - SoundBlaster 16/16ASP and compatibles :

        + 8/16 bit mono/stereo output are supported, software mixing.
        + 4000 - 44100 Hz for SoundBlaster 16/16ASP

      - SoundBlaster AWE32 and compatibles :

        + 16 bit stereo output is supported, hardware mixing.
        + 44100 Hz for SoundBlaster AWE32

      - Gravis UltraSound MAX/ACE and compatibles :

        + 16 bit stereo output is supported, hardware mixing.
        + Samplingrate depends on number of active channels.

      - Windows Sound System and compatibles :

        + 8/16 bit mono/stereo output are supported, software mixing.
        + 5000 - 48000 Hz for Windows Sound System.

      - Pro Audio Spectrum +/16 and compatibles :

        + 8/16 bit mono/stereo output are supported, software mixing.
        + 4000 - 44100 Hz for Pro Audio Spectrum +/16

      - AdLib Gold 1000/2000 :

        + 8/16 bit stereo is supported, software mixing.
        + 7000 - 44100 Hz for AdLib Gold 1000/2000

        The following output methods ARE supported but are very slow because
        those "cards" do NOT allow DMA transfers and thus the CPU must used
        with a highspeed timer to transfer all sample data :

      - Covox DAC at LPT1 :

        + 8 bit mono output is supported, software mixing.
        + 4000 - 48000 Hz for Covox DAC

      - AdLib and clones :

        + 5 bit mono output is supported thru FM-Chip, software mixing.
        + 4000 - 48000 Hz for AdLib

      - PC Internal speaker :

        + 5 bit mono output is supported, software mixing.
        + 4000 - 48000 Hz for PC Internal speaker

      Features that go without speaking :

      - Excellent clear, well optimized, speedy and compatible code.
      - Demands as little memory as possible by storing all note data packed.
      - Easy implementation in your 32 bit flat protected mode C/C++ programs.


                                   Interrupts
                                   ÄÄÄÄÄÄÄÄÄÄ


  A music system has to calculate, update and send musical information to the
  audio hardware at specified/constant time intervals. The Galaxy Music System
  uses, whenever possible, an IRQ generated by the audio hardware. This allows
  Galaxy to be called at a constant rate, whenever it needs to be called.
  Because Galaxy uses the IRQ generated by the audio hardware, which usually
  means an IRQ other than zero, the system timer (IRQ 0) is free for use in
  your program do to for example, vertical retrace timings, to get to run your
  program as smooth as possible. Please note that this does NOT go for
  SoundBlaster AWE32, Covox DAC, AdLib and PC-SPEAKER because these cards
  cannot generate an IRQ Galaxy will have to use the system timer (IRQ 0)
  for outputting sample data.


                                 Autodetecting
                                 ÄÄÄÄÄÄÄÄÄÄÄÄÄ


  Because there are so many different soundcards and clones available, most of
  the time the owner doesn't even know what kind of soundcard is installed and
  most people REALLY don't know what IRQ (what is an IRQ¨) or DMA their piece
  of computer equipment is working at. Because to overcome this problem those
  nice environment strings were introduced, unfortunately most of the time
  they are either wrong or contain invalid information (SoundBlasters at XXXh!)
  To get rid of all this, Galaxy v3.00á features full and partial auto-detection
  of the supported audio hardware. Full autodetection simply means something
  like : "Find the BEST soundcard installed in this system and get all
  information you'll need to know including BASE, IRQ and DMA.". Partial auto-
  detect means :"Check if the specified soundcard is present, at the specified
  base address, if so get all remaining information you'll need to know
  including IRQ and DMA.". Most of the time the full autodetect works fine, but
  sometimes people may want to use another (e.g. not the BEST) soundcard
  installed, so partial auto-detect can be used to override, the default best
  choice. You might want to know in what order the auto-detection routine looks
  for the audio hardware well here's the list :

    1. Gravis UltraSound MAX/ACE and clones
    2. SoundBlaster AWE32 and clones
    3. AdLib Gold 1000/2000 and clones
    4. Pro Audio Spectrum +/16 and clones
    5. SoundBlaster 16/16ASP and clones
    6. SoundBlaster Pro and clones
    7. SoundBlaster and clones
    8. Windows Sound System and clones
    9. AdLib and clones
   10. PC Internal speaker and clones ?

  The audio hardware auto detection is handled by the C/C++ callable function
  DetectSound(char, unsigned short int). Where the first parameter is one of
  the soundcard definitions (see GALAXY.H) and the second parameter is the base
  address. This function is, ofcourse, only available in the DOS-Version of the
  Galaxy Music System.


                              Implementation in C
                              ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ


  The Galaxy Music System is available either for use in a 32 bit flat
  protected-mode DOS-Program using WATCOM C/C++ or for use in a 32 bit flat
  model Win32 Windows-Program using either WATCOM C/C++ or Microsoft VISUAL
  C/C++. In the developer archive (GALAXY.ZIP) three kinds of GALAXY.LIB files
  are included a WATCOM C/C++ DOS-Version and two Windows-versions. When using
  the Windows-version of the Galaxy Music System don't forget to add GALAXY.LIB
  and WINMM.LIB to your linker command, when using the DOS-Version you'll only
  need to add GALAXY.LIB to your linker command. Furthermore you'll also
  need the GALAXY.H definition headerfile which defines all external functions
  and variables made available to your program by the Galaxy Music System. Now
  a short description of the calling interface will be given, for more details
  see TEST.C an example C file showing an easy implementation including sound-
  effects. Please note that the calling interface will remain the same both for
  a DOS and Windows program.


  int GetSoundInfo(char **Version,char **Driver)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Returns two zero-terminated strings (char *) which contain the following
  information. The first string will contain the Galaxy Music System version,
  the compilation date and the type of license. The second string will contain
  the type of digital output driver currently used. Can't fail unless NULL
  pointers are supplied.

  In:     char **Version=ASCIIZ Version information
          char **Driver=ASCIIZ Output driver information
  Out:    If successful:
           Returned value zero
           Pointers updated
          If unsuccessful:
           Returned value nonzero


  int InitSound(void)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Allocates needed memory and output buffers. Clears important internal
  structures and sets up the Galaxy Music System for use. Needs to be called
  only once upon startup. Mostly fails if not enough memory is available. If
  this function fails the Music System can NOT be used.

  In:     Nothing
  Out:    If successful:
           Returned value zero
           Galaxy Music System initialzed
          If unsuccessful:
           Returned value nonzero


  int DetectSound(char SoundcardType,unsigned short int Base)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Autodetects the best hardware device present in the system and gathers all
  information needed by the soundsystem. It's also possible to detect a
  specified hardware device on a given base. See the chapter on autodetection
  for more information on this subject. Fails if the player is already running
  or if the specified hardware device is not present, this in order to avoid
  crashing the system. This function has no effect in the Win32 version of the
  Galaxy Music System and will always return successful.

  In:     char SoundcardType=Type of soundcard (see GALAXY.H for typedefs)
          char Base=Base address of soundcard (see GALAXY.H for typedef)
  Out:    If successful:
           Returned value zero
           SoundCard structure initialized
          If unsuccessful:
           Returned value nonzero


  int ResetSound(void)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Resets all internal structures, except those concerning the hardware device
  information, the volume tables and the output buffers. Always call before
  loading a new piece of music. Fails if the player is already running this
  in order to avoid crashing the system.

  In:     Nothing
  Out:    If successful:
           Returned value zero
           Galaxy Music System data structures (re)initialized
          If unsuccessful:
           Returned value nonzero


  int LoadMusic(void *Data,char mode)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Loads and converts the following music-formats to the Galaxy Music System
  internally used format (.AM). Supported formats are .AM/.XM/.S3M/.STM/.MOD
  .MTM/.FAR and .669. An utility (M2AM.EXE) is provided to convert supported
  formats into .AM, the source code is available as M2AM.C. Fails if the player
  is already running or if there's not enough memory available for pattern and
  sample data. Loading from libraries is very easy when using memory mapped
  files you can supply a memory pointer. If you're using a normal library file
  without memory mapping you can seek to the right position and pass the Stream
  pointer.

  In:     void *Data=(FILE *) Stream or (char *) Memory containing music-data
          char mode=Data type (Stream or memory) (see GALAXY.H for typedefs)
  Out:    If successful:
           Returned value zero
           Music loaded (and converted) into memory
          If unsuccessful:
           Returned value nonzero


  int SetSamplingrate(unsigned short int Samplingrate)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Sets new Samplingrate (also known as Mixingrate) to use for digital output.
  Valid values for the Samplingrate are between 4000 and 48000 Hz, you are
  allowed to changed the Samplingrate in steps of one Hz. But please be aware
  that depending on the output device not all Samplingrates can be used, however
  the Galaxy Music System will internally adjust and/or limit the Samplingrate
  to mach the hardware specifications. When using the DOS-Version of the Galaxy
  Music System and a Gravis Ultrasound for output the actual Samplingrate only
  depends on the number of used sound channels, thus this function has no
  effect when using a Gravis Ultrasound or SoundBlaster AWE32 with the DOS
  Library. This because the DOS-Version will use the hardware mixing
  capabilities of those cards. Fails if the player is already running or if
  an invalid value is passed.

  In:     unsigned short int Samplingrate=Mixingrate in Hz (Default 22050 Hz)
  Out:    If successful:
           Returned value zero
           New samplingrate set
          If unsuccessful:
           Returned value nonzero


  int StartOutput(void)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Initializes and starts digital output, if no soundcard is specified in the
  SoundCard structure a full autodetect will be run and the output will be
  started. Please note that the music processing has to be started separately
  this allows for soundeffects only mode. Fails if the player is already
  running, no Music and/or Effect channels are allocated OR if the soundcard
  information specified in the structure is invalid. This in order to avoid
  crashing the system. Please do NOT modify the SoundCard structure while
  digital output is running, uncontrolled things may happen, can even result
  in a system crash.

  In:     Nothing
  Out:    If successful:
           Returned value zero
           Digital output running
          If unsuccessful:
           Returned value nonzero


  int StartMusic(void)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Enables music processing, maybe called anytime AFTER LoadMusic. Please note
  that by default after ResetSound() the music processing will be disabled,
  this allows for soundeffects only mode. Fails if no music-channels are
  allocated, e.g. no music is loaded previously.

  In:     Nothing
  Out:    If successful:
           Returned value zero
           Music processing running
          If unsuccessful:
           Returned value nonzero


  int LoadSoundeffect(void *Data,char mode)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Loads and converts the following sample-formats to the Galaxy Music System
  internally used format). Supported formats are .WAV and .ST3. Fails if the
  player is already running or if there's not enough memory available for the
  sample data. Loading from libraries is very easy when using memory mapped
  files you can supply a memory pointer. If you're using a normal library file
  without memory mapping you can seek to the right position and pass the Stream
  pointer.

  In:     void *Data=(FILE *) Stream or (char *) Memory containing sample-data
          char mode=Data type (Stream or memory) (see GALAXY.H for typedefs)
  Out:    If successful:
           Returned value nonzero, number to use for StartSoundeffect
           Sample loaded (and converted) into memory
          If unsuccessful:
           Returned value zero


  int StartSoundeffect(char Effect,unsigned long int Speed,char Vol,char Pan)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Starts playing a soundeffect with the given parameters and returns a handle
  which can be used for UpdateSoundeffect and StopSoundeffect. Fails if no
  effect-channels are allocated or if no effect-channels are available, e.g.
  all effect-channels are currently in use.

  In:     char Effect=Number of soundeffect returned by LoadSoundeffect
          unsigned long int Speed=Replayspeed in Hz (See GALAXY.H for typedef)
          char Vol=Volume level 0..64 (See GALAXY.H for typedef)
          char Pan=Panning position 0..15 (See GALAXY.H for typedef)
  Out:    If successful:
           Returned value nonzero, handle to use for Update and StopSoundeffect
           Soundeffect playing
          If unsuccessful:
           Returned zero


  int UpdateSoundeffect(char Handle,unsigned long int Speed,char Vol,char Pan)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Modifies the attributes of a playing soundeffect. Fails if no effect-channels
  are allocated or if an invalid handle is supplied.

  In:     char Handle=Handle returned by StartSoundeffect
          unsigned long int Speed=Replayspeed in Hz (See GALAXY.H for typedef)
          char Vol=Volume level 0..64 (See GALAXY.H for typedef)
          char Pan=Panning position 0..15 (See GALAXY.H for typedef)
  Out:    If successful:
           Returned zero
           Soundeffect playing using new settings
          If unsuccessful:
           Returned nonzero


  int StopSoundeffect(char Handle)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Stops a playing soundeffect. Fails if no effect-channels are allocated or
  if an invalid handle is supplied.

  In:     char Handle=Handle returned by StartSoundeffect
  Out:    If successful:
           Returned value zero
           Soundeffect stopped
          If unsuccessful:
           Returned value nonzero


  int StartCDTrack(char TrackNo)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Starts playing a CD-Audio (Red Book) track on the first CD-ROM drive in the
  system. Fails if no CD-ROM Interface is found or if an invalid track number
  is specified.

  In:     char TrackNo=Number of CD-Audio (Red Book) track to play 1..??
  Out:    If successful:
           Returned value zero
           CD-Audio track is playing
          If unsuccessful:
           Returned value nonzero


  int StopCDTrack(void)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Stops playing a CD-Audio (Red Book) track on the first CD-ROM drive in the
  system. Fails if no CD-ROM Interface was found.

  In:     Nothing
  Out:    If successful:
           Returned value zero
           CD-Audio track replaying is stopped
          If unsuccessful:
           Returned value nonzero


  int SetMusicVolume(char Volume,char Mode)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Changes the overal music volume, the new volume can either be set directly or
  be fade to. This allows to fade either in or out to a destination volume.
  Fails if an invalid value is specified for the music volume. I suggest to use
  this function to change the music volume rather than to the modify the global
  variable MusicVolume directly.

  In:     char Volume=New music volume 0..128
  	  char Mode=Volume change mode (see GALAXY.H for typdefs)
  Out:    If successful:
           Returned value zero
           Music volume changed or changing
          If unsuccessful:
           Returned value nonzero


  int SetEffectVolume(char Volume,char Mode)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Changes the overal effect volume, the new volume can either be set directly
  or be fade to. This allows to fade either in or out to a destination volume.
  Fails if an invalid value is specified for the effect volume. I suggest to
  use this function to change the effect volume rather than to the modify the
  global variable EffectVolume directly.

  In:     char Volume=New effect volume 0..128
  	  char Mode=Volume change mode (see GALAXY.H for typdefs)
  Out:    If successful:
           Returned value zero
           Effect volume changed or changing
          If unsuccessful:
           Returned value nonzero


  int ControlChannel(char Channel,char Mode)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Changes the operating mode of a given soundchannel. Fails if an invalid
  channel number is specified.

  In:     char Channel=Channel number 0..32
  	  char Mode=Channel operation mode (see GALAXY.H for typdefs)
  Out:    If successful:
           Returned value zero
           Channel mode changed
          If unsuccessful:
           Returned value nonzero


  int StopMusic(void)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Disables music processing. Please note that it will only disable music
  processing, digital output keeps running and thus soundeffects can still be
  played. Fails if no music-channels are allocated, e.g. no music is loaded
  previously.

  In:     Nothing
  Out:    If successful:
           Returned value zero
           Music processing stopped
          If unsuccessful:
           Returned value nonzero


  int StopOutput(void)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Deinitializes and stops digital output, always call this functions before
  terminating the program. It will reset the sound hardware, dma controllers
  and hardware interrupts. Fails if player is not running or if the information
  specified in the SoundCard structure is invalid. This in order to avoid
  crashing the system.

  In:     Nothing
  Out:    If successful:
           Returned value zero
           Digital output stopped
          If unsuccessful:
           Returned value nonzero


  int UnloadMusic(void)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Deallocates all memory allocated by both the music-loader AND the sample-
  loaders. This means that all memory in use by BOTH music-data AND sound
  effects is released. After this function is called all music-data AND sound
  effects have to be reloaded.

  In:     Nothing
  Out:    If successful:
           Returned value zero
           All allocated memory released
          If unsuccessful:
           Returned value nonzero


  int DeinitSound(void)
  ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

  Deallocates all memory and output buffers allocated by InitSound(). ALWAYS
  call this function before exiting, because it will also reset some used
  system services such as Virtual DMA-Specification (VDS), allocated CD-ROM
  handles etc. Fails if the player is running. If this function returns
  successful the Galaxy Music System can NOT be used anymore. If you want to
  use it again you'll have to call InitSound() again.

  In:     Nothing
  Out:    If successful:
           Returned value zero
           Galaxy Music System deinitialzed
          If unsuccessful:
           Returned value nonzero


                               Tested soundcards
                               ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ


  A music system has to be tested on as many soundcards/systems as possible.
  To keep track of what has been tested with what settings etc. a test record
  is maintained. The current test record is shown below :

    - Soundcard -           - Tested modes irq,dma etc. -         - Passed -

    SoundBlaster 1.5	      IRQ 7, DMA 1, 8 Bit mono       	     YES!
    SoundBlaster 2.0	      IRQ 7, DMA 1, 8 Bit mono       	     YES!
    SoundBlaster Pro 2.0      IRQ 2-10, DMA 0-3, 8 Bit stereo        YES!
    SoundBlaster 16	      IRQ 2-10, DMA 1-7, 8/16 Bit stereo     YES!
    			      IRQ 2-10, DMA 1-7, 8/16 Bit mono	     YES!
    SoundBlaster AWE32 VE     IRQ 0, 16 Bit stereo		     YES!
    Gravis UltraSound v3.4    IRQ 2-15, DMA 1, 16 Bit stereo	     YES!
    Gravis UltraSound v3.7    IRQ 2-15, DMA 1, 16 Bit stereo	     YES!
    Gravis UltraSound MAX     IRQ 2-15, DMA 1, 16 Bit stereo 	     YES!
    Windows Sound System      IRQ 2-15, DMA 1-7, 8/16 Bit stereo     YES!
    (Tested using a GUS-MAX)  IRQ 2-15, DMA 1-7, 8/16 Bit mono       YES!
    AdLib Gold 1000           IRQ 2-7,  DMA 1, 8/16 bit stereo       YES!
    Logitech Soundman 16      IRQ 2-15, DMA 1-7, 8/16 bit stereo     YES!
    (PAS 16 Compatible)       IRQ 2-15, DMA 1-7, 8/16 bit mono       YES!
    Logitech Soundman Games   IRQ 7, DMA 1, 8 Bit stereo             YES!
    Covox DAC at LPT1         IRQ 0, 8 bit mono                      YES!
    PC-Speaker		      IRQ 0, 5 bit mono			     YES!
    AdLib		      IRQ 0, 5 bit mono			     YES!


                                 Closing words
                                 ÄÄÄÄÄÄÄÄÄÄÄÄÄ


  Since this version of the Galaxy Music System is still a beta/demonstration
  version, I hope you can understand when I'm asking NOT to spread this archive
  to just everybody, please contact the author if distribution is needed for
  example for internal testing etc. This in order to allow easy contacting when
  updates are ready for testing. Furthermore I'm always available for any
  comments, suggestions, bug reports, new hardware (information) etc.


                                   Contacting
                                   ÄÄÄÄÄÄÄÄÄÄ


  If you want to contact the author of the Galaxy Music System for suggestions,
  bug reports etc. You can use one of the ways mentioned below :

  Snail-mail :           Telephone :		InterNet:

  Carlo Vogelsang	 Carlo Vogelsang 	k.c.vogelsang@student.utwente.nl
  Witbreuksweg 377-309   +31-(0)53-4311187
  7522 ZA Enschede       Please call between
  The netherlands        10:00 and 22:00 CET!
