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)