Category: DOS-based task switchers/multitaskers

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 is also supported by Novell DOS 7 TASKMGR in both
	  taskswitching and multitasking modes
SeeAlso: AX=270Ah