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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"
Category: DOS-Based Task Switchers/Multitaskers - Int 15h - M
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