INT 2F - DR DOS 6.0 TaskMAX - CONVERT TASK ID TO TASK INDEX                     
	AX = 270Bh
	DX = task ID
Return: DX = task index (FFFFh if task not active)
Note:	the TaskMAX API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running.  Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. is also supported by Novell DOS 7 TASKMGR in both
	  taskswitching and multitasking modes
SeeAlso: AX=270Ah