NetBSD-5.0.2/share/man/man4/man4.acorn26/eca.4

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.Dd September 11, 2001
.Os
.Dt ECA 4 acorn26
.Sh NAME
.Nm eca
.Nd Acorn Econet driver
.Sh SYNOPSIS
.Cd eca0 at ioc0 bank 2
.Sh DESCRIPTION
The
.Nm
driver provides access to an Econet network through a standard Acorn
Econet module, based on the Motorola 6854 ADLC.  It obtains its Econet
station number from the machine's CMOS RAM.
.Sh DIAGNOSTICS
.Bl -diag
.It %s: Tx underrun
Transmission of a frame failed because the driver couldn't get data to
the ADLC fast enough.  This might be caused by the network clock rate
being too high, or by the current screen mode using too much of the
data bus's bandwidth.
.It %s: collision
A collision occurred while transmitting a frame.  The transmission
should be retried, but currently isn't.
.It %s: incomplete transmission
A transmission failed to complete, but no obvious reason was found.
This should never happen.
.It %s: Rx overrun
Reception of a frame failed because the driver couldn't get data off
the ADLC fast enough.  Likely causes are the same as for
.Ql \&Tx underrun
above.
.It %s: Rx abort
A frame being received was aborted before it was complete.  This was
probably caused by a problem at the transmitting station.
.It %s: CRC error
A received frame failed its cyclic redundancy check and was discarded.
This is usually due to electrical noise on the network.
.It %s: No clock
The clock signal on the Econet has disappeared.  This probably
indicates that the machine is unplugged from the network, or that the
network itself has failed.
.It %s: Oversized frame
A frame larger than the current MTU of the interface was received and
discarded.
.El
.Sh SEE ALSO
.Xr netintro 4 ,
.Xr ifconfig 8