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AH = 83h AL = volume (0=silence, 7=highest) CX = number of bytes to play DX = time between sound samples (multiples of 273 nanoseconds) only bits 11-0 used ES:BX -> sound data (array of 8-bit unsigned PCM samples)
Return:
AH = 00h CF set if sound is busy CF clear if sound chip is free
Notes: This call returns immediately while the sound plays in the background; the sound chip is clocked at 3.57 MHz, with the low 12 bits of DX specifying the clock divisor. The BIOS appears to call INT 15/AX=91FBh when the sound device underflows to allow another INT 1A/AH=83h for seamless playing of long sounds.
See Also: AH=84h"Tandy" - INT 15/AH=91h
Category: Sound/Speech - Int 1Ah - T
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