Apple II
File Type Notes
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                                                  Developer Technical Support


File Type:         $D6 (214)
Auxiliary Type:    All

Full Name:     Instrument File
Short Name:    Instrument

Written by:    Matt Deatherage                                   January 1990

Files of this type and auxiliary type contain musical instruments.
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Files of type $D6 contain data that is to be interpreted as a definition of a 
musical instrument.  Programs which work with music have widely varying needs; 
while Apple proposes a standard instrument definition (ASIF), it is largely 
designed for the Apple IIGS Note Synthesizer and is listed under file type 
$D8, Sampled Sound.  Programs not using that tool may require files to store 
their own instruments.  Apple assigns auxiliary types in this file type for 
such purposes.

The following auxiliary type assignments are current for this file type as of 
the publication date of this Note:

        Auxiliary Type  Short Name                    Developer
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        $0000           Music Construction Set inst.* Electronic Arts
        $8002           Diversi-Tune instrument       DSR
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                     Table 1-Auxiliary Type Assignments

The auxiliary types for this file type are reserved; any not listed in this 
Note or About File Type Notes must be assigned by Apple Computer, Inc.  Using 
any file type or auxiliary type not assigned may result in conflicting 
identification of files by totally unrelated programs.  To obtain an auxiliary 
type assignment in this file type, see About File Type Notes.

    *  Although Electronic Arts' program Music Construction Set for the 
       Apple IIGS only creates sequences of this file type and auxiliary 
       type $0000, the program actually attempts to read any file with 
       type $D6.  Creators of sequence files may wish to note this 
       irregularity in their documentation.