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