Description: This object represents the protocol type to be
opened.  The protocol types are the following:

Mode (PMODE)    TYPE            Protocol
 =========== ===============    ==================
Ethernet II     0000h           IEEE 802.3 (cf. below)
Ethernet II     0001h-05DCh     'Dummy' = no reception!
Ethernet II     05DDh-FFFEh     Ethernet II type code
Ethernet II     FFFFh           Demultiplexor (or Promiscuous
                                or Hook)
IEEE SAP        xx00h           IEEE 802.2 Service Access Point
IEEE SNAP       0000h-FFFFh     IEEE 802.2 SNAP Type Code

Note that true ETHERNET II type code protocols
can only have type codes 05DDh (1501 decimal) or
higher.  A protocol with type code less than
05DDh can be logged on at the DLI.  However,
this protocol cannot receive packets, as packets
with type code less than 05DDh are interpreted
as IEEE 802.3 packets and will be routed to a
possibly active IEEE 802.3 protocol or (if
inactive) will be dismissed.