Int 14 Fn FFFF  - Comm-drv V14.0 - Get Int 14 Information Area             [S]

   AX = FFFFh
   BX:SI -> DWORD buffer for address of information area (see #0330)
         (initialized to zeros)

Return: BX:SI buffer filled with nonzero value if installed
Program: COMM-DRV is a universal serial communications driver by Willies'
     Computer Software Company, which supports standard INT 14 and
     FOSSIL calls as well as its own interfaces
Index: installation check;COMM-DRV

Format of COMM-DRV information area:
Offset Size    Description (Table 0330)
 00h  8 BYTEs  signature "COMM-DRV"
 08h  2 BYTEs  00h,00h
 0Ah   DWORD   -> direct address mapping table
 0Eh   DWORD   previous INT 14 vector