Siemens Nixdorf D756 User manual

PC
System board
PCD-H, PCD-4LSX
Technical Manual
Published by
Siemens Nixdorf Informationssysteme AG
Postfach 2160, W-4790 Paderborn
Postfach 830951, W-8000 München 83
Order No.: A26361-D756-Z120-1-7619
Printed in the Federal Republic of Germany
AG 0593 05/93
A26361-D756-Z120-1-7619

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Siemens Nixdorf Informationssysteme AG
Department BS2000 QM 2
Otto-Hahn-Ring 6
W-8000 München 83
Germany
Fax: [phone]
This manual was produced using paper treated with chlorine-free bleach.

Introduction
Important notes
Setup menu
System board
PCD-H, PCD-4LSX Settings and
add-on modules
Interface assignment
Error messages
Technical Manual
Index
May 1993 edition
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... about this product
... or about another aspect of information technology?
Our Training Centers will be glad to help.
Siemens Nixdorf has Training Centers at strategic
locations in Germany and more than 20 countries worldwide.
Please write to:
Siemens Nixdorf
Area Training Management Europe North
125-135 Staines Road, Hounslow, Middlesex, TW3 3JB
United Kingdom
or call
Ron Johnson, Hounslow
Tel.: .[phone]
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Intel is a registered trademark, 80486SX, 80487SX, 80486DX, 80486DX2 and
OverDrive are trademarks of Intel Corporation, USA.
Microsoft, MS and MS-DOS are registered trademarks and Windows is a trademark of
Microsoft Corporation.
UNIX is a registered trademark of UNIX System Laboratories.
Copyright Siemens Nixdorf Informationssysteme AG 1993
The reproduction, transmission or use of this documents or contents is not permitted without
express written authority.
All rights, including rights created by patent grant or registration of a utility model or design,
are reserved.
Offenders will be liable for damages.
Right of technical modifications reserved.

Contents
Introduction 1
Explanation of symbols 1
Features 2
Important notes 5
Notes on software 6
Setup menu 7
Settings in the SETUP menu 8
Entries on the first page of the SETUP menu 8
Entries on the second screen page of the SETUP menu 11
Settings and add-on modules 17
Lithium battery on the system board 17
Primary CRT controller 18
Mouse interface and interrupt 12 (IRQ12) 18
ERGO VGA III controller 18
Processor type and processor speed 19
Upgrading 20
Main memory 21
Memory modules 21
Installing a memory module 22
Removing a memory module 23
Second level cache memory 24
Upgrading 25
Table of hard disks 26
Interface assignment 27
Connector for power supply J1 27
Connector for external loudspeaker J13 27
Connector for lithium battery J14 28
Connector for indicator JP30 28
Connector J23 for external monitor controller 29
Error messages 31
Index 33
A26361-D756-Z120-1-7619

Introduction
This description applies for the system boards with the processors 80486SX,
80486DX and 80486DX2.
Explanation of symbols
The meanings of the symbols and fonts used in this manual are as follows:
!Pay particular attention to texts marked with this symbol. Failure to observe
this warning endangers your life, destroys the system, or may lead to loss of
data.
This symbol is followed by supplementary information, remarks and tips.
i
Texts which follow this symbol describe activities that must be performed in the
order shown.
This symbol means that you must enter a blank space at this point.
↵ This symbol means that you must press the Enter key.
Texts in this typeface are screen outputs from the PC.
Texts in this bold typeface are the entries you make via the keyboard.
Texts in italics indicate commands or menu items.
"Quotation marks" indicate highlighted text and names of chapters.
A26361-D756-Z120-1-7619 1
Introduction
Features
80486SX
– 32-bit microprocessor 80486SX/25 MHz or 33 MHz with 8 Kbyte internal cache
memory (first level cache)
80486DX
– 32-bit microprocessor 80486DX/25 MHz or 33 MHz with integrated coprocessor
and 8 Kbyte internal cache memory (first level cache)
80486DX2
– 32-bit microprocessor 80486DX2/50 MHz or 66 MHz with integrated coprocessor
and 8 Kbyte internal cache memory (first level cache)
Common features
– Socket for Upgrade with 80487SX/25 MHz/33 MHz or ODP486/25 MHz/33 MHz
– Socket for 80486SX/33 MHz, 80486DX/25 MHz/33 MHz,
80486DX2/50 MHz/66 MHz or ODPR486/25 MHz/33 MHz
– Memory configuration: 4 Mbyte to 32 Mbyte RAM onboard
– Second level cache memory on the system board: 0 Kbyte, 64 Kbyte or
256 Kbyte
– Video memory on the system board: 1 Mbyte
– 114 Byte Setup memory in CMOS RAM
– 8-bit EPROM (128 Kbyte * 8)
– Real-time clock/calendar with integrated battery backup
– Loudspeaker
– Floppy disk drive controller (up to 1.4 Mbyte format)
– ERGO VGA III controller
– Bus interface
– Connector for IDE hard disk drive
– Connector for floppy disk drive
– Connector for external monitor controller
– Connector for external loudspeaker
– Parallel interface
– 2 serial interfaces
– Mouse interface
– Keyboard port
– Monitor interface
2A26361-D756-Z120-1-7619