INT 16 - FAKEY.COM - PLAY TONES AH = 73h CX = number of tones to play DS:SI -> array of tones (see below) Program: FAKEY is a keystroke faking utility by System Enhancement Associates SeeAlso: INT 15/AX=1019h Format of tone array entries: Offset Size Description 00h WORD divisor for timer channel 2 02h WORD duration in clock ticks .