Supermicro SUPER P6DNH2 User manual

®
SUPER
Dual Pentium Pro Processor
SUPER P6DNH
SUPER P6DNH2
USER’S MANUAL
Revision 1.1
®

The information in this User’s Manual has been carefully reviewed and is believed to be
accurate. The vendor assumes no responsibility for any inaccuracies that may be
contained in this document, makes no commitment to update or to keep current the
information in this manual, or to notify any person or organization of the updates.
SUPERMICRO COMPUTER reserves the right to make changes to the product described in
this manual at any time and without notice. This product, including software, if any, and
documentation may not, in whole or in part, be copied, photocopied, reproduced, translated
or reduced to any medium or machine without prior written consent.
IN NO EVENT WILL SUPERMICRO COMPUTER BE LIABLE FOR DIRECT, INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR
INABILITY TO USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. IN PARTICULAR, THE VENDOR SHALL NOT HAVE
LIABILITY FOR ANY HARDWARE, SOFTWARE, OR DATA STORED OR USED WITH THE
PRODUCT, INCLUDING THE COSTS OF THE REPAIRING, REPLACING, OR
RECOVERING SUCH HARDWARE, SOFTWARE, OR DATA.
Unless you request and receive written permission from SUPERMICRO COMPUTER, you
may not copy any part of this document.
Information in this document is subject to change without notice. Other products and
companies referred to herein are trademarks or registered trademarks of their respective
companies or mark holders.
Copyright © 1997 by SUPERMICRO COMPUTER INC.
All rights reserved.
Printed in the United States of America.

iii
Preface
About This Manual
This manual is written for system houses, PC technicians and
knowledgeable PC end users. It provides information for the instal-
lation and use of the SUPER®P6DNH/P6DNH2 motherboard, which
supports the 200/180/166/150, >200 MHz Intel®Pentium® Pro pro-
cessors, and the i960®RP IO processor.
The Pentium Pro processor has two 64-bit data buses. One bus
interconnects to the built-in L2 cache and the other is an external
bus that interconnects with the system memory, I/O and the other
processor. Both come with ECC (Error Checking and Correction)
allowing for the correction of single-bit data errors and detection of
2-bit errors on the data bus.
Manual Organization
Chapter 1, Introduction, describes the features, specifications and
performance of the SUPER P6DNH/P6DNH2 system board, pro-
vides detailed information about the chipset, and offers warranty
information.
Refer to Chapter 2, Installation, for a list of the equipment needed
for a system based on the SUPER P6DNH/P6DNH2 system board.
This chapter provides you with the instructions for handling static-
sensitive devices, checking and/or configuring the jumpers. Read
this chapter when you want to install or remove SIMM memory mod-
ules and to mount the system board in the chassis. Also refer to
this chapter to connect the floppy and hard disk drives, USB, IDE
interface, parallel port, serial ports, as well as the cables for the
power supply, reset cable, Keylock/Power LED, speaker and key-
board.

If you encounter any problem, please see Chapter 3, Troubleshoot-
ing, which describes troubleshooting procedures for video, memo-
ry, and the setup configuration stored in memory. Instructions are
also included on contacting a technical assistance support repre-
sentative and returning merchandise for service and the BBS# for
BIOS upgrades .
SUPER P6DNH/P6DNH2 User's Manual
iv

Preface
Table of Contents
Preface
About This Manual ......................................................................................... iii
Manual Organization...................................................................................... iii
Chapter 1:
1-1 Overview............................................................................................... 1-1
SUPER P6DNH/P6DNH2 Motherboard Layout ...................... 1-4
SUPER P6DNH/P6DNH2 System Board Architecture.......... 1-5
Features......................................................................................... 1-6
1-2 Power Supply ...................................................................................... 1-8
1-3 Chipset Overview................................................................................ 1-8
1-4 National Semiconductor 87306 ....................................................... 1-9
1-5 Voltage Regulator Modules .............................................................. 1-9
1-6 System Overheat Thermal Control ................................................ 1-10
1-7 Warranty, Technical Support, and Service.................................. 1-11
Parts.............................................................................................. 1-11
BIOS .............................................................................................. 1-11
Labor............................................................................................. 1-11
Returns......................................................................................... 1-11
Chapter 2: Installation
2-1 SUPER P6DNH/P6DNH2 System Components.......................... 2-1
Standard System Configuration ................................................ 2-1
Enhanced System Configuration .............................................. 2-2
2-2 Static-Sensitive Devices ................................................................... 2-2
Precautions ................................................................................... 2-2
Unpacking...................................................................................... 2-3
2-3 Configuring System Board Jumpers.............................................. 2-3
Manufacturing Settings ............................................................... 2-3
v

Changing the CPU Speed ......................................................... 2-4
2-4 Mounting the Motherboard in the Chassis................................... 2-4
2-5 Connecting Cables............................................................................ 2-4
Power Supply Connectors.......................................................... 2-5
Turbo Function.............................................................................. 2-5
USB Connectors........................................................................... 2-7
Reset Cable Connector .............................................................. 2-8
Keylock/Power LED Cable Connector ..................................... 2-8
Keyboard Connector .................................................................... 2-9
Thermal Control Connector ....................................................... 2-9
Hard Drive LED .......................................................................... 2-10
Speaker Cable Connector........................................................ 2-10
PS/2 Keyboard and Mouse Ports ........................................... 2-11
Back-up Cooling Fan and Buzzer Connectors ..................... 2-12
Serial Ports.................................................................................. 2-12
2-6 Installing/Removing the SIMM Modules ...................................... 2-13
SIMM Module Installation.......................................................... 2-13
Removing SIMM Modules ......................................................... 2-14
2-7 Connecting Floppy and Hard Disk Drives.................................. 2-15
Parallel Port Connector ............................................................ 2-16
Floppy Connector ....................................................................... 2-17
IDE Interfaces ............................................................................. 2-18
Chapter 3: Troubleshooting
3-1 Troubleshooting Procedures ........................................................... 3-1
No Video ........................................................................................ 3-1
Troubleshooting Flowchart ........................................................ 3-2
Memory Error................................................................................. 3-3
Losing the System’s Setup Configuration.............................. 3-3
3-2 Technical Support Procedures........................................................ 3-4
3-3 Returning Merchandise for Service................................................ 3-4
vi
SUPER P6DNH/P6DNH2 User's Manual

Table of Contents
vii

SUPER P6DNH/P6DNH2 User's Manual
viii

1-1
Chapter 1: Introduction
Chapter 1
Introduction
1-1 Overview
SUPER P6DNH/P6DNH2 is a high performance, I2OΤΜ enabled com-
puter system board based on Intel®Pentium® Pro 200/180/166/150
MHz processors. They incorporate Intel's 440FX chipset and sup-
port dual processing. SUPER P6DNH uses the 33 MHz i960® RP I/
O processor while SUPER P6DNH2 uses the 66 MHz i960 RD I/O
processor.
The Pentium Pro processor is Intel’s top-of-the-line generation of
performance for servers, workstations, and high-end desktops. It
delivers its superior performance through its Dynamic Execution
microarchitecture which allows multiple branch prediction, dataflow
analysis and speculative execution.
The Pentium Pro processor includes 16KB of internal cache and an
integrated 256KB or 512KB non-blocking secondary cache in the
same package. Having the L2 cache inside the package will not
only save space, it will also have the CPU core communicating with
the L2 cache at full speed. Non-blocking means that the transac-
tions on the processor bus do not block subsequent bus transac-
tions. For example, when a cache miss occurs, the processor will
continue to process other instructions while initiating a bus trans-
action to satisfy the cache miss. These instructions could generate
additional cache misses which could cause more bus transactions.
The Pentium Pro processor can maintain up to four concurrent re-
quests of the bus.
The general purpose registers of the Pentium Pro processor are
the same as on previous generations. The processor bus achieves
high bus efficiency by providing support for multiple, pipelined
transactions and deferred replies. A single processor may have up
to 4 outstanding transactions at the same time. There are a variety

1-2
SUPER P6DNH/P6DNH2 User’s Manual
of wider datapaths both inside and outside the chip. It has an
external 64-bit bus in order to communicate more efficiently with the
system memory. The package have two cavities with about 21 mil-
lion transistors. The larger one is the CPU core with 5.5 million
transistors. The smaller one is the non-blocking cache which con-
tains 15.5 million transistors.
The i960 RP/RD I/O processor is a highly integrated intelligent I/O
subsystem on a chip. Mode 3 is the default setting for its normal
operation. The i960 RP/RD has two main functions. As a local
processor, it offloads interrupt-intensive I/O tasks from the host
CPU. Its architecture is composed of a RISC core surrounded by
peripherals essential to the I/O function. The on-board PCI-to-PCI
bridge enables designers to connect I/O components directly to the
PCI bus and also add additional PCI slots. The bridge improves
overall system performance by reducing bus traffic. SUPER
P6DNH/P6DNH2 supports four primary and four secondary PCI
buses.
I2O is an open software-interface standard for I/O devices, indepen-
dent of the specific device and operating system. It is implemented
on the i960 RP/RD I/O processor. With I2O, I/O hardware vendors
do not have to write drivers in countless variation, one for each
operating system version.
To attain portability across multiple operating systems and host
platforms, I2O drivers are divided into the OS Services Module
(OSM), and Hardware Device Module (HDM). The first module inter-
faces with the host operating system. The second interfaces with
the particular device, media or server managed by the driver. The
two modules interface with each other through a two-layered com-
munications system. A Message Layer sets up a communications
session. A Transport Layer defines how information will be shared.
The Message Layer resides on the Transport Layer.
Peripheral Component Interconnect (PCI) provides industry-leading
performance and compatibility. The 32-bit, 33 MHz pathway to the
CPU offers performance unmatched by other bus architectures. The

1-3
Chapter 1: Introduction
PCI standard is clearly defined to ensure complete compatibility. A
PCI add-on card available today will work in any PC-compliant sys-
tem in the future. The PCI add-on card interface is processor inde-
pendent. This will enable an efficient transition to future processor
generations and use with multiple processor architecture.
In addition to the security of a true standard, PCI add-on cards fea-
ture auto-configurability for easy integration. The user-friendly BIOS
automatically allocates system resources for add-on cards and con-
figures hard disk, memory, and other peripherals. No more
hassles with settings, jumpers, or switches. Just plug in the card
and go (Plug and Play or PnP).
The motherboard’s eight 32-bit slots with industry standard PCI de-
sign have a very high performance capability that provides an ideal
system board solution for a wide range of demanding applications;
such as networking multiuser environments, computer aided
design (CAD), computer aided manufacturing (CAM), computer-
aided engineering (CAE), database management, desktop publish-
ing, image processing, and artificial intelligence. The
motherboard’s additional three ISA slots provide standard 16-bit
compatibility for AT-type add-on card expansion.
Figure 1-1 shows the layout of the SUPER P6DNH/P6DNH2
motherboard. Figure 1-2 shows the architecture of the SUPER
P6DNH/P6DNH2 motherboard.

1-4
SUPER P6DNH/P6DNH2 User’s Manual
Figure 1-1. SUPER P6DNH/P6DNH2 Motherboard Layout
JP35
——–——— Manufacturer Settings ——–——
J86: 1-2 JP15: 2-3
J88: 1-2 JP26: OFF
J827: ON JP27: ON
J828 ON JP38: OFF
J829: ON JP88: OFF
JP13: 2-3 JP917: ON
JP880: 1-2 (default) JP924: 1-2
2-3 CMOS Clear JP925: 1-2
JP42: ON (ISA CLK=PCI CLK/4)
OFF (ISA CLK=PCI CLK/3)
——–———————–————––——–——–—
PARALLEL
J817
J20
POWER
CONNECTOR AT
J20B
J28 J29
11
J88J86
J31 U834
BIOS
J940
J27 J37 J38 11
J36J35
1
J39
J920
J921
J918
J919
1IU20 J913
PS/2
MOUSE
1J84
JP917
J918J917
J81 AT KB
J82
PS/2 KB
IU40
J83 PS/2 MOUSE
1
COM1
1
COM2
J824
J818
J941
1 1
JP924 JP925
IJ6 IJ8IJ7 IJ22
JP881
Ext Battery
JP42
JP20
KEYLOCK
——–———i960 Settings——––—
Mode 3 Mode 0 (default)
J920 OFF OFF
J921 ON ON
J918 OFF ON
J919 OFF ON
J915 OFF OFF
——–—–————————————–
1
U831
1
J828 J829
J827
J22
SPEAKER
1
1
JP39
SMISW
1
JP21
RESET
1
1
JP38
1
JP880
-
+
BATTERY
BT1
JP97
1
JP96
IR CON
1
J12 J11
IDE 2
IDE 1
1 1
J85
1
JP89
ALARM
11
JP88
1
JP91
1
JP92
1
JP93
1JP29
FLOPPY
J23
HD LED
1
JP95
1JP90
1
JP30
JP31
JP32
1
JP23
JP34
1VR4
Bank
3
Bank
2
Bank
3
Bank
2
Bank
1
Bank
1
Bank
0
Bank
0
JP13
1
1
1
U34
U33
CPU 1
CPU 2
1
1JP27
JP26
1
U6
VRM1
1
JP36
JP37
1
JP15
1
U13
U5
1
USB1
USB2
1
JP917 is i960 IRQ
J913 is i960 RP SIO
—–—–—–——CPU Speed—––—–————
150 166 180 200
JP29 OFF OFF ON ON
JP30 ON ON OFF OFF
JP31 ON ON ON ON
JP32 ON ON ON ON
JP36 ON OFF ON OFF
JP37 OFF ON OFF ON
——–—–——————————–—————
3V
SUPPLY
J942
1
1
POWER
+5V Extra
For J917 &
J918
Double Sided
FPM 60ns
Total 64 MB
DNH-i960 RP
DNH2-i960 RD
J915
VRM 2
SUPER P6DNH
SUPER P6DNH2
®
®

1-5
Chapter 1: Introduction
PCI
Bus
ISA
Bus
Figure 1-2. P6DNH/P6DNH2 System Board Architecture
Intel
440FX
Chipset
ISA
32.768 KHz
crystal
ISA
ISA
PCI
PCI
PCI
PCI
PCI
PCI
PCI
PCI
CPU 1
with 256/512KB
L2 cache
CPU 2
with 256/512KB
L2 cache
14.31818 MHz
crystal
i960 RP/RD
I/O processor

1-6
SUPER P6DNH/P6DNH2 User’s Manual
Features
The following list covers the general features of the SUPER P6DNH/
P6DNH2 motherboard.
CPU
•Dual Pentium Pro 200/180/166/150 MHz processors with
integrated 256 or 512KB non-blocking secondary cache
•16KB internal cache
•387-pin ZIF (Zero Insertion Force) socket 8
Intelligent i960 RP/RD IOP
•I20™ enabled
•64 MB local I/O memory
•8 Mb Flash I/O BIOS
•Wind River Systems Ix Works™ RTOS
Bus Speed
•66/60 MHz external bus with 64-bit data plus 8 bits ECC
Memory
•64-bit wide data bus of up to 1GB
•Supports 1 MB, 2 MB, 4 MB, 8MB, 16MB and 32MB (x32 or x36
60ns, 72-pin) Fast Page DRAM or EDO
•Error Checking and Correction and Parity Checking support
Dimensions
•Full AT size
•13.2" x 12.3"
EIDE support
•Integrated IDE controller provides two IDE interfaces for hard
disk(s) and/or CD ROM(s)
•Supports Mode 4
Super I/O
•Supports EPP (Enhanced Parallel Port) and ECP (Extended
Capabilities Port) parallel port, floppy interface, USB and 2 Fast
UART 16550 serial ports

1-7
Chapter 1: Introduction
Expansion
•Three 16-bit ISA slots
•Eight 32-bit PCI slots
BIOS
•AMI®Flash BIOS with built-in setup
•Plug and Play (PnP) with boot block support
Software Compatibility
•100% IBM®PC/AT®compatible
•DOS, OS/2, SCO UNIX® Open Server, XENIX®, Novell® SMP,
Windows™, Windows NT™ and Windows™ 95
Testing
•50°C, 48-hour, dynamic burn-in with system-level testing
Manufacturing and Support
•Made in U.S.A.
•Design-level Technical Support and Service in U.S.A.

1-8
SUPER P6DNH/P6DNH2 User’s Manual
1-2 Power Supply
As with all computer products, a stable power source is necessary
for proper and reliable operation. It is even more important for high
CPU clock rates like 200, 180, 166, 150 MHz and future Pentium
Pro processors for the SUPER P6DNH/P6DNH2 system board.
SUPER P6DNH/P6DNH2 can accomodate 5V power supplies. An
additional 5V power is provided on J20B. It is necessary to use this
extra 5V power when the PCI slots are heavily loaded. The SC801-
S chassis has the connector for the extra 5V power.
Although most power supplies generally meet the specifications re-
quired by the CPU, some power supplies are not adequate. To
obtain the highest system reliability, be certain that your power sup-
ply provides +5 VDC with a voltage range between +4.95 VDC (mini-
mum) and +5.25 VDC (maximum).
It is highly recommended that you use a high quality power supply.
Additionally, in areas where noisy power transmission is present,
you may choose to install a line filter to separate noise from the
computer. You can also install a power surge protector to help
avoid problems caused by power surges.
1-3 Chipset Overview
The Intel 440FX chipset is a high-performance PCIset that supports
full symmetric multi-processor protocol for up to two processors. It
is compliant to the PCI Rev. 2.1 specification. The memory control-
ler provides capability for auto-detection of EDO/FPM DRAM type
installed in the system. It also provides data integrity features in-
cluding ECC in the memory array and parity error detection. Memory
is upgradable up to 1GB for the SUPER P6DNH/P6DNH2.

1-9
Chapter 1: Introduction
1-4 National Semiconductor Super I/O Controller
The National Semiconductor 87306 Super I/O Controller incorpo-
rates an IDE control logic, two full function serial ports, an IEEE
1284 parallel port, industry standard floppy disk controller with 16
byte FIFO, Real Time Clock and an 8042 compatible keyboard con-
troller all in one chip.
The IDE interfaces provide up to Mode 4 support. The two serial
ports are software compatible with the Fast UART 16550. The par-
allel port is EPP (Enhanced Parallel Port) and ECP (Extended Ca-
pabilities Port) compatible, including level 2 support. It includes a
protection circuit against damage caused when the printer is pow-
ered up. EPP mode provides for greater throughput than Compat-
ible or Extended modes by supporting faster transfer rates and a
mechanism that allows the host to address peripheral device regis-
ters directly. Faster transfers are achieved by automatically gener-
ating the address and data strobes. EPP is compatible with both
Compatible and Extended mode parallel-port devices.
1-5 Voltage Regulator Modules (VRM)
The Voltage Regulator Module (VRM1 and VRM2) is a DC-to-DC
converter with a standardized interface to the system. The stan-
dardization allows a variety of Voltage Regulator Modules to support
the Pentium Pro processor family and to provide a cost effective
support for CPU upgrade. It is necessary to have the VRM for the
motherboard to be functional.

1-10
SUPER P6DNH/P6DNH2 User’s Manual
1-6 System Overheat Thermal Control
A back-up cooling fan can be hooked up to JP91, JP92 or JP93. If
the power supply fan or the processor cooling fan goes down, the
circuitry will detect an overheat temperature depending on the user
setting. It will then trigger the backup cooling fan or alarm. The
alarm can be turned on or off using JP88. JP90 is used to connect
the overheat LED. The user can set the temperature range using
JP95. A buzzer is connected on JP89 that will sound off that it is
time to replace the power supply fan or the CPU cooling fan. It is
important that the back-up cooling fan be installed correctly in such
a way that it will not only cool down the processor but the whole
system as well.

1-11
Chapter 1: Introduction
1-7 Warranty, Technical Support, and Service
The manufacturer will repair or exchange any unit or parts free of
charge due to manufacturing defects for one year (12 months) from
the original invoice date of purchase.
Parts
Defective parts will be exchanged or repaired within one year (12
months) from the manufacturer’s original invoice purchase date.
BIOS
The manufacturer will exchange the BIOS free of charge (shipping
and handling excluded) due to existing incompatibility issues within
one year from the manufacturer’s original invoice purchase date.
Labor
Mail-in or carry-in service is available for one year (12 months) from
the manufacturer’s original invoice purchase date.
Returns
If you must return products for any reason, refer to Chapter 3 in this
manual, “Returning Merchandise for Service.”

1-12
SUPER P6DNH/P6DNH2 User’s Manual