Location of Driver:

\NT\E100BNT.SY_ (NDIS 4.0 compressed) \OEMSETUP.INF

Note: Windows NT* 4.0 ships with a driver for the PRO/100B adapter. However, it is recommended that you install the more recent driver contained on the Configuration and Drivers diskette.

General Instructions

After putting the adapter in the computer, follow these steps to configure it under Windows NT 4.0:

1. Double-click the Network icon in the Control Panel.

2. Select the Adapter tab and click Add.

3. Select Have Disk. Insert the PRO/100+ Adapter Drivers Disk in the disk driver and click OK.

4. Select "Intel PRO/100+ PCI Adapter (TX or T4)" from the list of available drivers and click OK.

5. The Intel PROSet Setup program automatically scans computer resources and determines the settings assigned to your adapter. It also adds an Intel PROSet icon to the Control Panel for future use of PROSet.

6. (Optional) You can test the adapter by clicking the Test button.

7. To exit PROSet and finish installing the driver, click OK in the PROSet main menu.

8. Select the protocol(s) required (TCP/IP is the default) by selecting the Protocol Tab.

9. Select the network services required (by default, all are selected) by selecting the Service tab.

10. Click Close to continue. Other Configuration screens may appear. Configure as desired.

    Note: After the driver is installed, Windows NT may show the adapter as "Intel 82557-based 10/100 Ethernet PCI Adapter". PROSet will display the adapter specifically as "Intel PRO/100+ PCI 100Base- TX, 10BaseT" adapter. Also, The NDIS 4.0 miniport driver will automatically get installed in Windows NT 4.0.

11. When prompted, restart Windows NT.

12. Repeat the General Instruction process for installing additional adapters.

Adapter Settings

There are two ways to run PROSet, which allows changing the adapter settings:

• From the Control Panel, double-click on the Intel PROSet icon.

• From the Control Panel, double-click on the Network icon, select the adapters section, and double-click on the "Intel 82557-based 10/100 Ethernet PCI adapter".

From the main Intel PROSet menu, click the Change button to get to the Adapter Settings screen. The defaults work correctly for most configurations.

Network Speed

Recommended setting: Auto (default)

This parameter lets the PRO/100+ adapter know what speed to use on the Ethernet wire. The choices are 10 Mbps, 100 Mbps, and Auto. In Auto mode, the adapter detects if its environment can support 100 Mbps speed. It then sets the speed to 100 if it can, or 10 if it can't. If you are using a cross over cable connected to another adapter, set the speed to either 10 Mbps or 100 Mbps.

Note: If the Duplex Mode is not set to Auto, set the speed to either 10 Mbps or 100 Mbps.

Duplex Mode (100BASE-T4 does not support full-duplex)

Recommended setting: Auto (PRO/100+ TX adapter only)

Auto: The adapter negotiates with the hub how to send/receive packets, either full- or half-duplex. The RO/100B T4 adapter does not support auto-negotiating.

Full-duplex: The adapter sends and receives packets at the same time. This improves the performance of your adapter. Set duplex mode to full-duplex only if you have a full-duplex switch.

Half-duplex: The adapter performs one operation at a time. It either sends or receives.

A regular adapter can perform only one operation at a time (half-duplexing). The PRO/100+ TX adapter has the ability to send and receive packets at the same time (full-duplexing) at both 10 and 100 Mbps. The EtherExpress PRO/100B T4 adapter supports full-duplex only at 10 Mbps. In order to reap the benefits of full-duplexing, you MUST have a full-duplex switch.

The PRO/100+ adapter has the added ability to "talk" to the hub and determine at which mode to communicate (either full- or half-duplex). This is called auto-negotiation. You must have an auto-negotiating switch to get full-duplex support with the Duplex Mode set to Auto. If you don't have an auto-negotiating hub and want to run at full-duplex, set Duplex Mode to Full and then set the SPEED parameter to either 100 Mbps (PRO/100+ TX adapter) or 10 Mbps ( PRO/100+ TX or T4 adapters).

Note: If you set duplex to Full, and leave Speed at Auto, the adapter will run at 10 Mbps.

Advanced Adapter Settings

Click the Advanced button in the Adapter Settings screen to change the Advanced setting.

Note: The defaults work correctly for most configurations. Please use caution when changing these parameters. Use the online help for additional information.

Coalesce Buffers

Recommended setting: 8

Receive Buffers

Recommended setting: 32

Transmit Control Blocks

Recommended setting: 16

Adaptive Transmit Threshold

Recommended setting: On

This parameter dynamically optimizes the point at which early transmit cycles will be executed. This results in higher performance but may generate an occasional under run. To eliminate underruns, set it to OFF.

Adaptive Technology

Recommended setting: On

Adaptive Technology customizes the EtherExpress PRO/100+ adapter to the respective operating system by downloading microcode to the silicon. This improves performance and minimizes CPU utilization.

Map Registers

Recommended settings: 64

This applies to:

Intel® PRO/100B Adapter