INT 68 - APPC/PCIBM PC - NETWORK DEVICE CONTROL - DETACH PHYSICAL UNIT
	AH = 01h subfn 2700h
	DS:DX -> control block (see #03678)
Return: control block updated
SeeAlso: AH=01h/SF=2000h,AH=01h/SF=2100h,AH=01h/SF=2200h


Format of APPC/PCIBM PC "Detach Physical Unit" control block:
Offset	Size	Description	(Table 03678)
 00h 12 BYTEs	reserved
 0Ch	WORD	2700h (verb "Detach Physical Unit")
 0Eh  6 BYTEs	00h
 14h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	(big-endian) return code (see #03668)
 18h	BYTE	00h  type: hard
		01h  type: soft