(*
===========================================================================
 BBS: Canada Remote Systems
Date: 09-02-93 (00:16)             Number: 36877
From: CATHY NICOLOFF               Refer#: NONE
  To: ALL                           Recvd: NO
Subj: Musical Notes!!!      1/2      Conf: (1221) F-PASCAL
---------------------------------------------------------------------------
Here's some help for all you programmers out there! It's straight from
my personal programming library!


SBNotes : Array[1..12] Of Byte =
      ($AE, $6B, $81, $98, $B0, $CA, $E5, $02, $20, $41, $63, $87);

   SBOctaves : Array[1..84] Of Byte =
      ($22, $25, $25, $25, $25, $25, $25, $26, $26, $26, $26, $26,
       $26, $29, $29, $29, $29, $29, $29, $2A, $2A, $2A, $2A, $2A,
       $2A, $2D, $2D, $2D, $2D, $2D, $2D, $2E, $2E, $2E, $2E, $2E,
       $2E, $31, $31, $31, $31, $31, $31, $32, $32, $32, $32, $32,
       $32, $35, $35, $35, $35, $35, $35, $36, $36, $36, $36, $36,
       $36, $39, $39, $39, $39, $39, $39, $3A, $3A, $3A, $3A, $3A,
       $3A, $3D, $3D, $3D, $3D, $3D, $3D, $3E, $3E, $3E, $3E, $3E);

    Notes               : Array[1..84] Of Word =
    { C    C#,D-  D    D#,E-  E     F    F#,G-  G    G#,A-  A    A#,B-  B  }
    (0065, 0070, 0073, 0078, 0082, 0087, 0093, 0098, 0104, 0110, 0117, 0123,
     0131, 0139, 0147, 0156, 0165, 0175, 0185, 0196, 0208, 0220, 0233, 0247,
     0262, 0277, 0294, 0311, 0330, 0349, 0370, 0392, 0415, 0440, 0466, 0494,
     0523, 0554, 0587, 0622, 0659, 0698, 0740, 0784, 0831, 0880, 0932, 0987,
     1047, 1109, 1175, 1245, 1329, 1397, 1480, 1568, 1661, 1760, 1865, 1976,
     2093, 2217, 2349, 2489, 2637, 2794, 2960, 3136, 3322, 3520, 3729, 3951,
     4186, 4435, 4699, 4978, 5274, 5588, 5920, 6272, 6645, 7040, 7459, 7902);

Explanation : This is used to emulate single note music (IE-ANSI music).

The array NOTES is the frequencies used to do a SOUND/NOSOUND on the PC
speaker.

The SBNOTES and SBOCTAVES arrays are the hex values of the notes, and
their octaves for any ADLIB compatible card.

Just take which note you want, and input the note AND the octave
into the Adlib port. Here's some sample code to show you how :
*)

Unit Music;

Interface

Uses Crt;

CONST

SBNotes : Array[1..12] Of Byte =
      ($AE, $6B, $81, $98, $B0, $CA, $E5, $02, $20, $41, $63, $87);

   SBOctaves : Array[1..84] Of Byte =
      ($22, $25, $25, $25, $25, $25, $25, $26, $26, $26, $26, $26,
       $26, $29, $29, $29, $29, $29, $29, $2A, $2A, $2A, $2A, $2A,
       $2A, $2D, $2D, $2D, $2D, $2D, $2D, $2E, $2E, $2E, $2E, $2E,
       $2E, $31, $31, $31, $31, $31, $31, $32, $32, $32, $32, $32,
       $32, $35, $35, $35, $35, $35, $35, $36, $36, $36, $36, $36,
       $36, $39, $39, $39, $39, $39, $39, $3A, $3A, $3A, $3A, $3A,
       $3A, $3D, $3D, $3D, $3D, $3D, $3D, $3E, $3E, $3E, $3E, $3E);

    Notes               : Array[1..84] Of Word =
    { C    C#,D-  D    D#,E-  E     F    F#,G-  G    G#,A-  A    A#,B-  B  }
    (0065, 0070, 0073, 0078, 0082, 0087, 0093, 0098, 0104, 0110, 0117, 0123,
     0131, 0139, 0147, 0156, 0165, 0175, 0185, 0196, 0208, 0220, 0233, 0247,
     0262, 0277, 0294, 0311, 0330, 0349, 0370, 0392, 0415, 0440, 0466, 0494,
     0523, 0554, 0587, 0622, 0659, 0698, 0740, 0784, 0831, 0880, 0932, 0987,
     1047, 1109, 1175, 1245, 1329, 1397, 1480, 1568, 1661, 1760, 1865, 1976,
     2093, 2217, 2349, 2489, 2637, 2794, 2960, 3136, 3322, 3520, 3729, 3951,
     4186, 4435, 4699, 4978, 5274, 5588, 5920, 6272, 6645, 7040, 7459, 7902);

Procedure Play_SB(N, M : Byte);
Procedure Init_SB;
Procedure Reset_SB;
Function Detect_SB : Boolean;

Implementation

(***********************)

Procedure Play_SB(N, M : Byte);

Var Loop  : Integer;
    Temp  : Integer;

Begin
  Port[$0388] := N;
  For Loop := 1 To 6 Do
     Temp := Port[$0388];
  Port[$0389] := M;
  For Loop:=1 To 35 Do
     Temp := Port[$0388];
End;

(***********************)

Procedure Init_SB;

Var
   A : Integer;

Begin
   For A := 1 to 244 Do
      Play_SB(A,$00);
   Play_SB($01,32);
   Play_SB($B0,$11);
   Play_SB($04,$60);
   Play_SB($04,$80);
End;

(***********************)

Procedure Reset_SB;

Begin
   Play_SB($20,$41);
   Play_SB($40,$10);
   Play_SB($60,$F0);
   Play_SB($80,$77);
   Play_SB($23,$41);
   Play_SB($43,$00);
   Play_SB($63,$F0);
   Play_SB($83,$77);
   Play_SB($BD,$10);
End;

(***********************)


Function Detect_SB : Boolean;

Var
   Dummy1,
   Dummy2  : Byte;

Begin
   Play_SB($04,$60);
   Play_SB($04,$80);
   Dummy1 := Port[$388];
   Play_SB($02,$FF);
   Play_SB($04,$21);
   Delay(8);
   Dummy2 := Port[$388];
   Play_SB($04,$60);
   Play_SB($04,$80);
   If ((Dummy1 AND $E0) = $00) And ((Dummy2 AND $E0) = $C0) Then
      Detect_SB := True
   Else
      Detect_SB := False;
End;

(***********************)

End.

That is my own soundblaster unit I use to output.

To play note 'C' at octave 3, do the following :

Play_SB($A0, SBNotes[1]);
Play_SB($B0, SBOctaves[1 + 3 * 12]);

To shut off Adlib output, do this :

Play_SB($83, $FF);
Play_SB($B0, $11);

{   TEST PROGRAM }

Uses DOS,Crt,Music;

VAR I : BYTE;

BEGIN
Init_SB;
Reset_SB;
FOR I := 1 To 8 DO
    BEGIN
    Play_SB($A0, SBNotes[i]);
    Play_SB($B0, SBOctaves[i + 3 * 12]);
    DELAY(500);
    END;
Init_SB;
Reset_SB;
END.