
Copyright
1998 Intergraph Computer Systems. All rights reserved. This document contains information protected by copyright, trade secret,
and trademark law. This document may not, in whole or in part, be reproduced in any form or by any means, or be used to make any
derivative work, without written consent from Intergraph Computer Systems.
Use, duplication, or disclosure by the United States Government is subject to restrictions as set forth in subdivision (c)(1)(ii) of the
rights in technical data and computer software clause at DFARS 252.227-7013. Unpublished rights are reserved under the copyright
laws of the United States.
Intergraph Computer Systems, Huntsville AL 35894-0001
Notice
Information in this document is subject to change without notice and should not be considered a commitment by Intergraph Computer
Systems. Intergraph Computer Systems shall not be liable for technical or editorial errors in, or omissions from, this document.
Intergraph Computer Systems shall not be liable for incidental or consequential damages resulting from the furnishing or use of this
document.
All warranties given by Intergraph Computer Systems about equipment or software are set forth in your purchase contract. Nothing
stated in, or implied by, this document or its contents shall be considered or deemed a modification or amendment of such
warrantites.
Trademarks
Intergraph Computer Systems and the Intergraph Computer Systems logo are registered trademarks of Intergraph Computer
Systems. TD and TDZ are trademarks of Intergraph Computer Systems.
Other brands and product names are trademarks of their respective owners.

General
Operating System Support for USB Peripherals
Your system includes Universal Serial Bus (USB) ports to which you can connect USB
peripherals. However, Windows NT 4.0 does not currently support USB peripherals.
Microsoft will add support for USB peripherals to a future Windows NT release.
Factory Quality Seal
The Factory Quality Seal on the back of the system’s base unit is your assurance that the
system has not been opened or modified since it left the factory. To open the base unit, you
must remove or cut the seal. Though the word VOID may appear when you do this, removing
or cutting the seal does not void your system’s warranty.
1
Windows NT 4.0
Enabling IntelliMouse Functionality
If a Microsoft IntelliMouse shipped with your system, it will function as a standard two-button
mouse until you install the IntelliPoint software. This software (
with the system in InterSite Version Manager or on a backup diskette. See the
file delivered with this software for more information.
Enabling PC Card Hard Disk Operation
Intergraph Computer Systems has discovered a resource conflict that keeps a PC Card hard
disk (ATA or AT type) from being configured by Windows NT. To work around this conflict
and enable operation of a PC Card hard disk in a PC Card adapter, you must edit the Windows
NT Registry.
WARNING Be careful when making changes in the Registry. Any mistakes or incorrect changes
may cause serious operating system problems, and you may have to reinstall the
operating system. If the system becomes unusable after you have modified the
Registry, restart the system and try to use the Last Known Good configuration option to
undo the damage. Refer to Windows NT documentation for more information on the
Last Known Good configuration option.
MSMOUSEDRV) is delivered
README.TXT

2
To enable PC Card hard disk operation:
1. Start the Registry Editor (
2. Open the following subkey in the Registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Pcmcia
3. From the Edit menu, select Add Value.
4. In the Value Name box, type InterruptMask.
5. In the Data Type box, select REG_DWORD; then select OK.
6. In the Data box, type F347.
7. Under Radix, select Hex; then select OK.
8. Exit from the Registry Editor.
9. Restart the system.
REGEDT32.EXE) to open the Registry.
Windows 95
CAUTION Intergraph Computer Systems does not fully certify Windows 95 on the TD/TDZ-320, -325, -
420, or
-425, and does not ship Windows 95 installed on these systems. The following basic
information is provided as a courtesy for customers who attempt to install Windows 95 on
these systems. Intergraph Computer Systems provides no further support for such
installations, and customers assume full responsibility for supporting such installations.
Installing Windows 95 on a Deskside System
Intergraph Computer Systems has discovered a problem you may encounter if you try to install
Windows 95 on a deskside TD/TDZ-320, -325, -420, or -425. Windows 95 may not install
because of an interaction with the SCSI controller used in the deskside systems.
To work around this problem, use the basic input/output system (BIOS) Setup program to
disable external SCSI functionality before installing Windows 95. After completing
installation of Windows 95, use the BIOS Setup program to enable external SCSI
functionality.
Refer to the hardware documentation delivered with the system for information on using the
BIOS Setup program.