==================================================================
         MikeOS -- The Mike Operating System kernel
                PC SPEAKER SOUND ROUTINES
==================================================================

os_speaker_tone

Generate PC speaker tone (call os_speaker_off to turn off)

Example:

 See below

os_speaker_off

Turn off PC speaker

Example:

; Generate "Middle-C" 261.626 Hz (263 Hz close enough) for 2 secs.
; 2 secs = 2 000 000 uS which is 0x01E8480 in hex.

        jmp Play_It

        music_note  dw  263

Play_It:

        mov ax, [music_note]
        call os_speaker_tone
   
        mov cx, 0x01E
        mov dx, 0x8480
        call os_pause

        call os_speaker_off
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