EC(4) BSD Kernel Interfaces Manual EC(4)
ec -- 3Com EtherLink II (3c503) Ethernet device
ec0 at isa? port 0x250 iomem 0xd8000 irq 9
The ec device driver supports 3Com EtherLink II (3C503) Ethernet cards.
The EtherLink II supports two media types on a single card. All support
the AUI media type. The other media is either BNC or UTP behind a trans-
ceiver. Software cannot differentiate between BNC and UTP cards.
The ec driver supports the following media types:
10base5 Set 10base5 (thick-net) operation.
10base2 Set BNC (10base2/thin-net) or UTP operation.
For more information on configuring this device, see ifconfig(8). To
view a list of media types and options supported by your card try
``ifconfig <device> media''. For example, ``ifconfig ec0 media''.
ec0: wildcarded IRQ is not allowed The IRQ was wildcarded in the kernel
configuration file. This is not supported.
ec0: invalid IRQ <<n>>, must be 3, 4, 5, or 9 An IRQ other than the above
listed IRQs was specified in the kernel configuration file. The Ether-
Link II hardware only supports the above listed IRQs.
ec0: failed to clear shared memory at offset <<off>> The memory test was
unable to clear the interface's shared memory region. This often indi-
cates that the card is configured at a conflicting iomem address.
ifmedia(4), intro(4), isa(4), hostname.if(5), ifconfig(8)
BSD April 26, 2017 BSD