Int 15 Fn 02  - Multidos Plus - Release Resource Semaphore                 [T]

   AH = 02h
   AL = semaphore number (00h-3Fh)

Return: AH = status
       00h successful
       01h not semaphore owner
       02h invalid semaphore number

Notes: if any tasks are waiting for the semaphore, the first task on the wait
     queue will become the new owner and be reawakened
   do not use within an interrupt handler

See Also: AH=01h"MultiDOS",AH=10h"MultiDOS",AH=1Ch"MultiDOS"