Int 5B  - At&t Starlan Extended Netbios (variable Length Names)            [N]

   ES:BX -> Network Control Block (see below)

Return: AL = status (see INT 5C)

See Also: INT 5C

Format of Network Control Block
Offset Size    Description
 00h   BYTE    ncb_command (see below)
 01h   BYTE    ncb_retcode
 02h   BYTE    ncb_lsn
 03h   BYTE    ncb_num
 04h   DWORD   -> ncb_buffer
 08h   WORD    ncb_length
 0Ah 16 BYTEs  ncb_callname
 1Ah 16 BYTEs  ncb_name
 2Ah   BYTE    ncb_rto
 2Bh   BYTE    ncb_sto
 2Ch   DWORD   -> ncb_post /* int (far *ncb_post)(); */
 30h   BYTE    ncb_lana_num
 31h   BYTE    ncb_cmd_cplt
 32h   DWORD   -> ncb_vname
 36h   BYTE    ncb_vnamelen
 37h  9 BYTEs  ncb_reserve

Note: fields 00h-31h are the same as for a standard NetBIOS NCB (see INT 5C)

Values for ncb_command field same as for INT 5C, except
 70h   send net Break