NAME
eca —
Acorn Econet driver
SYNOPSIS
eca0 at ioc0 bank 2
DESCRIPTION
The
eca 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.
DIAGNOSTICS
- %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.
- %s: collision
- A collision occurred while transmitting a frame. The
transmission should be retried, but currently isn't.
- %s: incomplete transmission
- A transmission failed to complete, but no obvious reason
was found. This should never happen.
- %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
‘
Tx underrun
’ above.
- %s: Rx abort
- A frame being received was aborted before it was complete.
This was probably caused by a problem at the transmitting station.
- %s: CRC error
- A received frame failed its cyclic redundancy check and
was discarded. This is usually due to electrical noise on the
network.
- %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.
- %s: Oversized frame
- A frame larger than the current MTU of the interface was
received and discarded.
SEE ALSO
netintro(4),
ifconfig(8)