Windows_XP_Installation_Guide.pdf

Future Technology Devices

International Ltd.

Windows XP Installation Guide

Windows XP Installation Guide

Table of Contents

Part I Welcome to the Windows XP Installation Guide

Part II Installing FTDI Device Drivers

Installing CDM Drivers

................................................................................................................................... 4

Part III Uninstalling FTDI Devices

Uninstalling CDM Drivers

................................................................................................................................... 15

Part IV Troubleshooting

Windows XP cannot find drivers for my device

................................................................................................................................... 18

................................................................................................................................... 17

Windows XP forces a reboot after installing a device

................................................................................................................................... 19

Driver installation fails and Windows XP gives error code 10

FT232BM or FT245BM device hangs randomly during operation under Windows

................................................................................................................................... 20

Windows XP displays an error and then terminates installation

................................................................................................................................... 21

Part V Revision History

Part VI Contact Information

Part VII Disclaimer

Index

Welcome to the Windows XP Installation Guide

The purpose of this document is to provide users of FTDI chips with a simple procedure for

installing drivers for their devices under Windows XP.

Windows XP Installation Guide

Installing FTDI Device Drivers

FTDI have previously provided two types of driver for Windows: a D2XX direct driver and a virtual

COM port (VCP) driver. Previously, these drivers were mutually exclusive and could not be

installed at the same time. The new Windows combined driver model (CDM) allows applications to

access FTDI devices through either the D2XX DLL or a COM port without having to change driver

type. However, it should be noted that an application can only communicate through one of these

interfaces at a time and cannot send commands to the D2XX DLL and the associated COM port at

the same time.

The CDM driver comes in two parts. The bus layer provides D2XX style functionality and is always

installed. The CDM driver will determine whether a COM port should be exposed by reading the

EEPROM of FT232R, FT245R and FT2232C devices. In the case of FT232BM, FT245BM,

FT8U232AM and FT8U245AM devices, the CDM driver will default to always installing a COM port.

This behaviour can be changed and EEPROM settings ignored by changing the driver INF files as

detailed in AN232B-10 Advanced Driver Options . Please note that modifying the INF files of a

Microsoft WHQL certified driver will invalidate the certification.

Installing FTDI Device Drivers

2.1

Installing CDM Drivers

To install CDM drivers for an FTDI device under Windows 2000, follow the instructions below:

· If a device of the same type has been installed on your machine before and the drivers that are

about to be installed are different from those installed alrea dy , the original drivers need to be

uninstalled. Please refer to the Uninstalling CDM Drivers

section of this document for further

details of this procedure.

· Download the latest available CDM drivers from the FTDI web site and unzip them to a location

on your PC.

· If you are running Windows XP or Windows XP SP 1, temporarily disconnect your PC from the

Internet. This can be done by either removing the network cable from your PC or by disabling

your network card by going to the "Control Panel\Network and Dial-Up Connections", right-

clicking on the appropriate connection and selecting "Disable" from the menu. The connection

can be re-enabled after the installation is complete. This is not necessary under Windows XP

SP 2 if configured to ask before connecting to Windows Update. Windows XP SP 2 can have

the settings for Windows Update changed through "Control Panel\System" then select the

"Hardware" tab and click "Windows Update".

· Connect the device to a spare USB port on your PC. If the device is based on the FT2232C, the

Microsoft composite device driver is automatically loaded silently in the backgound. Once the

composite driver has been installed Windows Found New Hardware Wizard will launch. If there

is no available Internet connection or Windows XP SP 2 is configured to ask before connecting

to Windows Update, the screen below is shown. Select "No, not this time" from the options

available and then click "Next" to proceed with the installation. If there is an available Internet

connection, Windows XP will silently connect to the Windows Update website and install any

suitable driver it finds for the device in preference to the driver manually selected.

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