INT 21 U - Quarterdeck - HOOKROM.SYS - GET HOOKED VECTOR TABLE                  
	AX = 4402h
	BX = file handle for device "HOOKROM$"
	CX = 0004h
	DS:DX -> DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address. buffer for address of hooked vector table (see #01451)
Return: CF clear if successful
	    DS:DX buffer filled
	CF set on error
	    AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
SeeAlso: AX=4402h/SF=01h


Format of HOOKROM.SYS hooked vector table entry:
Offset	Size	Description	(Table 01451)
 00h  5 BYTEs	FAR jump to actual interrupt handler
		(end of table if first byte is not EAh)
 05h	BYTE	interrupt vector number