INT 1A - Tandy 2500, Tandy 1000L series - DIGITAL SOUND???                      
	AH = 7Fh
	???
Return: ???
Note:	this function is not supported by the Tandy 1000SL/TL BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly.
SeeAlso: AH=80h,AH=83h,AH=85h