Int 69 Fn 0A  - Decnet DOS 2.1+ - Data Link Layer                          [N]

   AH = 0Ah
   AL = function (see below)
   ES:BX -> Datalink Communication Block

Return: AX = status (see below)

See Also: INT 6D"DECnet"

Values for function:
 00h   initialize
 01h   open portal
 02h   close portal
 03h   enable multicast address
 04h   disable multicast address
 05h   transmit
 06h   request transmit buffer
 07h   deallocate transmit buffer
 08h   read channel status
 09h   read datalink portal list
 0Ah   read information about a datalink portal
 0Bh   read and/or clear counters
 0Ch   request to boot from a network server
 0Dh   enable Ethernet channel
 0Eh   disable Ethernet channel
 0Fh   start MOP/send a System ID message
 10h   stop MOP
 11h   get DECPARM
 12h   set DECPARM
 13h   external loopback

Values for status:
 00h   successful
 01h   hardware failed to initialize
 02h   channel state was not off (must be off to execute that command)
 03h   channel state is off (must be on to execute that command)
 04h   address not set
 05h   hardware missing
 06h   buffer too small
 07h   no more buffers available
 08h   no more resources available
 09h   promiscuous receiver active
 0Ah   non exclusive
 0Bh   unrecognized portal
 0Ch   protocol type in use
 0Dh   not a valid Multicast address
 0Eh   outstanding calls
 0Fh   hardware doesn't support receiving bad frames
 10h   none outstanding
 11h   no events
 12h   broken
 13h   buffer quota exceeded
 14h   already initialized
 15h   loopback failure
Index: error codes;DECnet DOS|DECnet DOS;error codes

Format of Datalink Communication Block
Offset Type    Description
 00h   WORD    portal ID
 02h  6 BYTEs  source address
 08h  6 BYTEs  destination address
 0Eh   DWORD   buffer pointer
 12h   WORD    buffer length
 14h   WORD    operation
 16h   BYTE    pad flag (used on open)
       00h no pad
       01h pad
 17h   BYTE    mode flag (used on open)
       00h 802.3
       01h Ethernet
       02h promiscuous
 18h   DWORD   line status change function
 1Ch   DWORD   received data function
 20h   DWORD   transmitted data function
 24h   BYTE    maximum outstanding transmits/receives
 25h  2 BYTEs  protocol type
 27h   WORD    buffers lost