Technical data

DEC - Ethernet Controller Tests
http://www.motorola.com/computer/literature 3-17
3
Transmit of Ethernet Packet Failed: Late
Collision (LCOL)
A Collision occurred after
the slot time of the channel
had elapsed.
Transmit of Ethernet Packet Failed: Too many
Retries (RTRY)
Transmit failed too many
times, indicating a
transmission problem over
the network.
Transmit of Ethernet Packet Failed: Buffer Error
(BUFF)
ENP flag not found at the
end of a transmitted frame,
and the next packet is not
owned by controller.
Transmit of Ethernet Packet Failed: Underflow
error (UFLO)
Transmitter truncated a
message, due to data
unavailability.
Transmit of Ethernet Packet Failed: Excessive
Deferral (EXDEF)
IEEE/ANSI 802.3 defined
excessive deferral of
transmitted packet.
Receive of Ethernet Packet Failed: Invalid
Checksum (CRC)
Packet Checksum vs. Data is
invalid, indicating bad
transmission of packet.
Receive of Ethernet Packet Failed: Framing Error
(FRAM)
Some bits were missing on
an incoming byte in a frame.
Receive of Ethernet Packet Failed: Overflow
condition (OFLO)
FIFO unable to store
incoming packet, usually
because packet is too large
to fit in buffer.
Receive of Ethernet Packet Failed: Buffer error
(BUFF)
Buffer is not available to
receive incoming frame,
usually because ownership
has not been given back to
controller.
Table 3-4. DEC Error Messages (Continued)
Error Message Symptom or Cause