Int 21 Fn 4402  U - Quarterdeck - Hookrom.sys - Get Hooked Vector Table    [Q]

   AX = 4402h
   BX = file handle for device "HOOKROM$"
   CX = 0004h
   DS:DX -> DWORD buffer for address of hooked vector table (see below)

Return: CF clear if successful
       DS:DX buffer filled
   CF set on error
       AX = error code (01h,05h,06h,0Dh) (see AH=59h)

See Also: AX=4402h/SF=01h

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