ethernet/3com/3c509.rst

29  - 3c509B (later revision of the ISA card; supports full-duplex)
31  - 3c589B (later revision of the 3c589; supports full-duplex)
47 needed except to enable full-duplex mode (see below). An example of the syntax
65 The v1.18c driver added support for the 3c509B's full-duplex capabilities.
66 In order to enable and successfully use full-duplex mode, three conditions
69 (a) You must have a Etherlink III card model whose hardware supports full-
71 positively known to support full-duplex are the 3c509B (ISA bus) and 3c589B
73 full-duplex mode; these include the original 3c509 (no "B"), the original
78 AUI and 10base2 network cabling is physically incapable of full-duplex
82 itself full-duplex capable. This is almost certainly one of two things: a full-
83 duplex-capable  Ethernet switch (*not* a hub), or a full-duplex-capable NIC on
90   Extremely important caution concerning full-duplex mode
92   Understand that the 3c509B's hardware's full-duplex support is much more
94   at the physical layer of the network it fully supports full-duplex operation,
97   auto-negotiate a full-duplex connection with its link partner under any
98   circumstances, no matter how it is initialized***. If the full-duplex mode
100   independently _forced_ into full-duplex mode as well; otherwise various nasty
119 12 10baseT (RJ-45 connector); force full-duplex mode
124 full-duplex mode, no matter what the card's detected EEPROM settings might be.
126 never automatically enable full-duplex mode in an existing installation;
203 0x80 	Statistics counter nearly full
231 host is incorrectly set to full duplex on a half duplex network.
239 to full duplex (see above).