Int 21/AH=81h

European MS-DOS 4.0 - FREEZE - STOP A PROCESS

AH = 81h
BX = flag (00h freeze command subtree, 01h only specified process)
CX = Process ID of head of command subtree

Return:
CF clear if successful
CF set on error
AX = error code (no such process)

Desc: Temporarily suspend a process or a process and all of its children

Note: If BX=0001h, this call will not return until the process is actually frozen, which may not be until after it unblocks from an I/O operation

See Also: AH=82h - AH=89h - AX=8E00h - INT 15/AX=101Dh Category: DOS Kernel - Int 21h - E

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