Int 15 Fn 101C  - Topview - "endc" - End Critical Region                   [Q]

   AX = 101Ch

Return: task-switching enabled

Note:  this API call may be made from within a hardware interrupt handler

See Also: AX=101Bh,AX=DE13h,AX=DE1Bh,INT 2F/AX=1682h,INT 60/DI=0603h