DEC 10/100Base-T, Windows NT 4.0

DEC 10/100Base-T
Windows NT 4.0

Version v4.14

11--1996

1. Copyright Notice:

First Edition, April 1994

Updated, December 1994

Updated, February 1996

Updated, April 1996

Digital Equipment Corporation makes no representations that the use of its products in the manner described in this publication will not infringe on existing or future patent rights, nor do the descriptions contained in this publication imply the granting of licenses to make, use, or sell equipment or software in accordance with the description.
Copyright Digital Equipment Corporation 1994.
All rights reserved.
Do not redistribute the driver files.
Windows, Windows NT, and Windows95 are trademarks of Microsoft Corporation.
Microsoft, MS, MS-DOS are registered trademarks of Microsoft Corporation.
Digital Semiconductor's, Digital, Digital Semiconductor are trademarks of Digital Equipment Corporation.
All other trademarks and registered trademarks are the property of their respective holders.

2. Overview:

The driver is currently supported for motherboards and option boards based on Digital Semiconductor's DC21140\DC21140A Fast Ethernet controller CHIPSET.

3. Requirements:

A. Hardware Requirements:

Digital Semiconductor's DC2114x-based Fast Ethernet adapter.

B. Software Revision Requirements:

Windows NT Version 4.0 or later

4. Files and directories:

INSTALL.DOC This file.
OEMSETUP.INF The driver's setup file for Windows NT
DC21X4.SYS The driver's executable
DC21X4.DBG The driver's symbol table

5. Installing the DC21X4 Driver on Windows NT:

1. From the Windows NT Main Menu, select the Control Panel icon.

2. From the Control Panel menu select the Network icon.

If a dialog box asks you "Do you want to install NT

Network?" select YES and Continue. Then place

the Windows NT CDROM in the CD-ROM reader.

Select the drive that matches the configuration of your system and complete the install.

3. You will see several messages. To add a network adapter, select Yes and then Continue
4. For each additional message, select continue.
5. From the Add Network Adapter dialog box, scroll through the menu to select Other.
6. When the Insert Diskettes menu prompts you for a disk, insert the DC21X4 driver installation diskette for Windows NT into drive A. Then select OK.
7. Select THE option

[DEC PCI Fast Ethernet DC21140]

from the Select OEM Option box, then select OK.
8. Modify the default distribution path in the Windows NT Setup box to point to the correct drive and path, then click on [Continue]

9. For PCI options, a Dialog box pops up to select the: ConnectionType:

AutoSense Senses dynamically the media ports
AutoSense_NoNway Senses dynamically the media ports without Nway negotiation
100BaseTx To connect 100BaseTx Ethernet hubs
100BaseTx Full_Duplex To connect 100BaseTx Full Duplex hubs
100BaseT4 To connect 100BaseT4 Ethernet hubs
100BaseFx To connect 100BaseFx Ethernet hubs
10BaseT To connect 10BaseT Ethernet hubs
10BaseT Full_Duplex To connect 10BaseT Full Duplex hubs
BNC (10Base2) BNC connector
AUI (10Base5) 15_pin connector

10. Upon completion, the selected adapter is added to the Installed Adapter Cards list of the Network Setting box (the number prefixing the adapter is the adapter number).

11. Click on [Close] to complete the Network Setting initialization.

12. If needed, modify the values in the registry (see section 7 below).

13. Shutdown and reboot the system.

6. Parameters

To overwrite the initial values set by the EISA Configuration Utility (ECU) or overwrite the driver's default values, add or edit the following values in the Registry DC21X4<adapter_number> Parameters subtree:

CacheLineSize = REG_DWORD { 16 | 32 | 64 | 128 }

16 bytes

32 bytes (default)

64 bytes

128 bytes

InterruptMitigation = REG_DWORD {0 | 1} (DC21140,DC21142)

0 Disabled (default)

1 Enabled

Enable/disable the Interrupt Mitigation algorithm.

InterruptThreshold = REG_DWORD {value} (default: 500)

Maximum number of interrupt/second allowed before the Receive and Transmit interrupts get masked. Meaningfull only when InterruptMitigation is enabled.

FrameThreshold = REG_DWORD {value} (default: 400)

Minimum number of processed frame/second allowed before the Receive and Transmit interrupts get unmasked. Meaningfull only when InterruptMitigation is enabled.

MapRegisters = REG_DWORD {4,8,16,32,64} (default: 64)

Number of map registers allocated by the adapter.

NetworkAddress = REG_SZ { xx-xx-xx-xx-xx-xx }

Mandatory if no Serial ID PROM is plugged in Overwrite the Serial ID PROM if plugged in NetworkAddress 00-00-00-00-00-00 is ignored

NwayProtocol = REG_DWORD { 0 | 1 } (DC21041 and DC21142 Rev1.0,1.1 only)

0 Disabled
1 Enabled (default)

Enable/disable the 10BT/10BT_FD Nway medium negotiation in Autosense mode.

ReceiveBuffers = REG_DWORD {8..64} (default: 16)

Number of buffers allocated by the driver in the Receive ring.

SoftwareCRC = REG_DWORD { 0 | 1 } (DC21040 rev 1.x, 2.0 & 2.2 only)

0 The CRC is generated by the adapter 1 (default) The CRC is generated by software for transmit packets bigger than the transmit threshold. NOTE: This option affects performances and could be disabled if the adapter does not report transmit underruns in its statistic counters.

UnderrunRetry = REG_DWORD number_of_retries (default=2)

Maximun number of retransmission attempts of an underrun packet.

UnderrunThreshold = REG_DWORD number_of_underruns (default=10) (DC21140 and DC21142 only)

Maximun number of underrun occurences before the controller switches to the next threshold value.

The following values allow to overwrite the DC21X4 default setting. Refer to the Digital Semiconductor's DC21040, DC21041, DC21140\DC21140A, DC21142, DC21143 Engineering specifications for detailled description:

BackPressure = REG_DWORD { 0 | 1 } (not DC21040 rev1)

0 Disabled (default)

1 Enabled

BurstLength = REG_DWORD { 0 | 1 | 2 | 4 | 8 | 16 | 32 }

0 unlimited (default) - (not 21040, 21041 & 21140 rev1)

1 doubleword

2 doublewords

4 doublewords

8 doublewords

16 doublewords (default for 21040, 21041 & 21140 rev1)

32 doublewords (not 21040 & 21041)

CaptureEffect = REG_DWORD { 0 | 1 } (not 21040 rev1)

0 Disabled (Default)

1 Enabled

FifoArbitration = REG_DWORD { 0 | 1 }

0 Rcv/Txm Arbitration (default)
1 Round_Robin

SnoozeMode = REG_DWORD { 0 | 1 } (DC21041 only)

0 Disabled (default)
1 Enabled

StopBackoffCounter = REG_DWORD { 0 | 1 } (not DC21040 rev1)

0 Disabled (Default)

1 Enabled

StoreAndForward = REG_DWORD { 0 | 1 } (DC21140 only)

Select the StoreAndForward mode if high PCI latencies causes 100Mbps Transmit Underruns

1 Enabled
0 Disabled (default)

TransmitThreshold = REG_DWORD { 72 | 96 | 128 | 160 }

Transmit Threshold value for the 10Mbps media.

72 bytes
96 bytes (default)

128 bytes

160 bytes

TransmitThreshold100 = REG_DWORD { 128 | 256 | 512 | 1024 }

Transmit Threshold value for the 100Mbps media. Meaningless when StoreAndForward is set

128 bytes

256 bytes

512 bytes (default)

1024 bytes

These Registry values can be edited interactively through the Registry editor winnt\system32\regedt32.exe) or by invoking the regini command Edit an DC21X4.ini file as described below, then invoke the command:

regini DC21X4.ini

DC21X4.ini format:

\Registry\Machine

System

CurrentControlSet

Services

DC21x4{adapter_number}

Parameters

{valuename} = {type}{value}

7. Driver Revision number

To retrieve the driver revision number either select the file DC21X4.SYS and open the File Properties applet or query the Registry:

HKEY_LOCAL_MACHINE\

Software\DigitalEquipmentCorporation\DC21X4\CurrentVersion

MajorVersion

MinorVersion

8. Error messages

The error messages are logged in the Entry Log and can be seen using the Entry Log Viewer (in WNT's Administration Tools group).

Each error message has a standard Ndis error code and an driver's additional code.The additional codes are:

DC21X4_ERRMSG_REGISTRY 0x01

DC21X4_ERRMSG_ALLOC_MEMORY 0x02

DC21X4_ERRMSG_SROM 0x03

DC21X4_ERRMSG_MEDIA 0x04

DC21X4_ERRMSG_LOAD_CAM 0x05

DC21X4_ERRMSG_SYSTEM_ERROR 0x06

DC21X4_ERRMSG_TXM_JABBER_TIMEOUT 0x07

8.1 Driver initialization errors:

NDIS_ERROR_CODE_UNSUPPORTED_CONFIGURATION DC21X4_ERRMSG_REGISTRY

The AdapterType Registry's key is missing or its value is unsupported by the adapter board

NDIS_ERROR_CODE_ADAPTER_NOT_FOUND

No board matching the AdapterCFID Registry's key value was found plugged into the PCI bus or in the slot specified in the Registry

NDIS_ERROR_CODE_OUT_OF_RESOURCES DC21X4_ERRMSG_ALLOC_MEMORY

Not enough memory to allocate space for the Adapter data block

NDIS_ERROR_CODE_INVALID_VALUE_FROM_ADAPTER DC21X4_ERRMSG_SROM

Invalid data read from the adapter's serial ROM

NDIS_ERROR_CODE_NETWORK_ADDRESS

No readable burnt_in or software configured station address

NDIS_ERROR_CODE_UNSUPPORTED_CONFIGURATION DC21X4_ERRMSG_MEDIA

The selected media port is not supported by the board.

NDIS_ERROR_CODE_INTERRUPT_CONNECT

Interrupt initialization failed

NDIS_ERROR_CODE_TIMEOUT DC21X4_ERRMSG_LOAD_CAM

DC21X4 CAM initialization failed

9.2 Driver run time errors:

NDIS_ERROR_CODE_HARDWARE_FAILURE DC21X4_ERRMSG_SYSTEM_ERROR

System_Error interrupt (bus parity error)

NDIS_ERROR_CODE_HARDWARE_FAILURE DC21X4_ERRMSG_TXM_JABBER_TIMEOUT

Transmit Jabber timer expired

9. Hotline and Support Information:

Call Cubix Customer Service for information and technical support:

Voice 1-800-829-0551

Fax 1-702-888-1001

BBS 1-702-888-1003

Version v4.14

11--1996

1. Copyright Notice:

2. Overview:

The driver is currently supported for motherboards and option boards based on Digital Semiconductor's DC21140\DC21140A Fast Ethernet controller CHIPSET.

3. Requirements:

A. Hardware Requirements: Digital Semiconductor's DC2114x-based Fast Ethernet adapter.

B. Software Revision Requirements:

Windows NT Version 4.0 or later

4. Files and directories: INSTALL.DOC This file. OEMSETUP.INF The driver's setup file for Windows NT DC21X4.SYS The driver's executable DC21X4.DBG The driver's symbol table

5. Installing the DC21X4 Driver on Windows NT:

1. From the Windows NT Main Menu, select the Control Panel icon.

2. From the Control Panel menu select the Network icon.

6. Parameters

To overwrite the initial values set by the EISA Configuration Utility (ECU) or overwrite the driver's default values, add or edit the following values in the Registry DC21X4<adapter_number> Parameters subtree:

NetworkAddress = REG_SZ { xx-xx-xx-xx-xx-xx }

NwayProtocol = REG_DWORD { 0 | 1 } (DC21041 and DC21142 Rev1.0,1.1 only)

BurstLength = REG_DWORD { 0 | 1 | 2 | 4 | 8 | 16 | 32 }

FifoArbitration = REG_DWORD { 0 | 1 }

TransmitThreshold = REG_DWORD { 72 | 96 | 128 | 160 }

TransmitThreshold100 = REG_DWORD { 128 | 256 | 512 | 1024 }

7. Driver Revision number

HKEY_LOCAL_MACHINE\

8. Error messages

8.1 Driver initialization errors:

Not enough memory to allocate space for the Adapter data block

DC21X4 CAM initialization failed

9.2 Driver run time errors:

9. Hotline and Support Information:

A. Hardware Requirements:

Digital Semiconductor's DC2114x-based Fast Ethernet adapter.

4. Files and directories:

INSTALL.DOC This file.
OEMSETUP.INF The driver's setup file for Windows NT
DC21X4.SYS The driver's executable
DC21X4.DBG The driver's symbol table