Description - for Diagnostic Program
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(1). History :
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Version Descriptions
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v1.02 1) First release for DC21140-based PCI Fast Ethernet Adapter.
2) Support 10Base-T/100Base-TX modules.
v2.30 1) Update to support newer revision of LAN Controller.
v2.32 1) Update to process the sleep mode for DECchip DC21140-AC
or higher. Because the DOS ODI driver will put the
controller under sleep mode after driver unloading.
2) Discards any key combined with <Ctrl> key to assure
that the Diagnostic Program will not be terminated
abnormally by Ctrl-Break or Ctrl-C key.
(2). Software Environment :
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A. Make sure that free conventional memory is more than 200K
before execute this Diagnostic Program.
B. Make sure that Expanded Memory Manager (EMM386.EXE) is
version 4.49 or higher (date is 05-31-94) for compatibility.
C. The Diagnostic Program should not be run under DOS prompt
of Windows.
(3). Statistic Counters :
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A. Transmission:
Items Descriptions
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Collision Count Indicates the number of collisions that occurred
when transmission.
Frame deferred Indicates that the DC21140 had to defer
while ready to transmit a frame because
the carrier was asserted.
FIFO underflow Indicates that the transmitter aborted the
message because data arrived late from memory.
Underflow error indicates that the DC21140
encountered an empty transmit FIFO while
transmitting a frame.
The transmission process enters the suspended
state and sets both transmit underflow and
transmit interrupt.
Heartbeat fail This is effect only in 10-Mb/s operating mode.
Indicates a heartbeat collision check failure
(the transceiver failed to return a collision
pulse as a check after the transmission).
Some transceiver do not support heartbeat.
In this case, heartbeat fail is always set
but not valid.
Excessive collisions Indicates that the transmission was aborted
after 16 successive collisions while attempting
to transmit the current frame.
Late collision Indicates that the frame transmission was
aborted due to collision occuring after the
collision window of 64 bytes.
No carrier Indicates that the carrier signal from the
transceiver was not present during transmission.
Loss of carrier Indicates loss of carrier during transmission.
Jabber timeout Indicates that the transmit jabber timer timed
out and that the DC21140 transmitter was still
active.
The transmit jabber timeout interrupt is set.
The transmission process is aborted and placed
in the STOPPED state.
Retry count Indicates the number of retry for Master
station to re-build connection with Slave
station when timeout to wait for response
from Slave station.
B. Reception:
Items Descriptions
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FIFO overflow Indicates received data in this descriptor's
buffer were truncated due to FIFO overflow.
CRC error Indicates that a cyclic redundancy check (CRC)
error occurred on the receive frame.
Dribbling bit Indicates that the frame contained a noninteger
multiple of 8 bits. This error is reported only
if the number of dribbling bits in the last byte
is 4 in MII/SYM operating mode, or at least 3 in
10-Mb/s serial operating mode.
Watchdog expire Indicates that the receive watchdog timer expired
while receiving the current packet with length
greater than 2048 bytes through 2560 bytes.
Late collision Indicates that the frame was damaged by a
collision that occurred after the 64 bytes
following the start frame delimiter (SFD).
This is a late collision.
Frame too long Indicates that the frame length exceeds the
maximum Ethernet-specified size of 1518 bytes.
Runt frame Indicates that this frame was damaged by a
collision or premature termination before the
collision window had passed.
Descriptor error Indicates a frame truncation caused by a frame
that does not fit within
the current descriptor buffers, and that the
DC21140 does not own the next descriptor.
The frame is truncated.
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.