Page 1
MOTHERBOARD DIVISION
PH440 NLX Motherboard
User Guide
www.mitsubishi-motherboard.com
124577UG September 1998
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PH440 NLX Motherboard User Guide September 1998
Document History
Issue Description Date
1.0 Preliminary May 98
1.1 Update for production motherboards July 98
1.2 Style update, added installation and upgrade guides September 98
Trademarks mentioned within this document are the properties of their respective
owners. Details available on request.
Information contained in this document is subject to change without notice and does not
represent a commitment on the part of Mitsubishi Electric Motherboard Division.
No part of this manual may be reproduced or transmitted in any form or by any means
electronic or mechanical including photocopying and recording, for any purpose, without
the express written permission of the publishers.
Published by:
Mitsubishi Electric
Motherboard Division
3500 Parkside
Birmingham Business Park
Birmingham, England
B37 7YS
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 2 OF 51
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PH440 NLX Motherboard User Guide September 1998
SAFETY AND REGULATORY NOTICES
GENERAL
Battery
This product contains a lithium battery.
Do not use a metal or other conductive implement to remove the battery. If a short-circuit is
made between its positive and negative terminals the batter y may explode.
Replace a discharged battery with one of the same type; another type may explode or ignite.
Follow the instructions contained in the User Guide to replace the battery. Dispose of a
discharged battery promptly and in accordance with the battery manufacturer’s recommended
instructions. Do not recharge, disassemble or incinerate the discharged battery. Keep awa y from
children.
Anti-static precautions
Warning
Static electricit y can caus e perman ent dama ge to elec tron ic componen ts. You should be
aware of this risk, and take precautions against the discharge of static electricity.
This product is at risk from static discharge because the electronic components of the
motherboard are exposed. Memory modules and replacement processors are examples of
electrostatic sensitive devices (ESSDs).
All work that involves contact with the PH440 NLX Motherboard should be done in an area
completely free of static electricity. We recommend using a Special Handling Area (SHA) as
defined by EN 100015-1: 1992. This means that working surfaces, floor coverings and chairs
must be connected to a common earth reference point, and you should wear an earthed wrist
strap and anti-static clothing. It is also a good idea to use an ionizer or humidifier to remove
static from the air.
Handle static-sensitive items with extreme care. Hold add-on components only by their edges,
avoiding their electrical contacts. In general, do not handle static-sensitive items unnecessarily.
Keep all conductive material, and food and drink, away from your work area and PH440 NLX
Motherboard.
LEGALITIES
This product complies with the relevant clauses of the following European Directives (and all
subsequent amendments):
Low Voltage Directive 73/23/EEC
EMC Directive 89/336/EEC
CE Marking Directive 93/68/EEC
Important
This product, when supplied, complies with the CE Marking Directive and its strict legal
requirements. Use o nly pa rts tested an d app rov ed b y Mit subishi Elec tric Moth erboa rd
Division.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 3 OF 51
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PH440 NLX Motherboard User Guide September 1998
STANDARDS
Safety
This product complies with the American Safety Standard UL1950.
Electro-magnetic Compatibility (EMC)
This product complies with the following European EMC standards:
Emissions EN50022 Class B
Immunity EN50082-1 Class B
This product also complies with the following American EMC standard:
FCC Class B
FCC Compliance Statement
Note: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
♦
Reorient or relocate the receiving antenna.
♦
Increase the separation between the equipment and receiver.
♦
Connect the equipment into an outlet on a circuit different to that which the receiver is
connected.
♦
Consult the dealer or an experienced radio/TV technician for help.
Important
You are cautioned that any change or modification to the product not expressly approved by
the manufactu rer cou ld void th e appro vals held by this pr oduct.
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PH440 NLX Motherboard User Guide September 1998
CONTENTS
1 Overview 8
Motherboard Features......................................................................................................................9
Configuration Options...................................................................................................................10
Build-time ................................................................................................................................10
User Configurable.................................................................................................................... 10
Block Diagram............................................................................................................................... 11
2 Installation guide 12
3 Upgrading the motherboard 14
Adding more memory....................................................................................................................14
Fitting and removing DIMMs..................................................................................................14
Fitting a DIMM........................................................................................................................ 15
Removing a DIMM.................................................................................................................. 15
Adding more video memory..........................................................................................................15
The processor assembly.................................................................................................................16
To fit a new processor.............................................................................................................. 17
Replacing the battery for the configuration CMOS....................................................................... 18
4 Electronics 19
Processor........................................................................................................................................ 19
Core Logic.....................................................................................................................................19
Concurrency............................................................................................................................. 20
Level 2 Cache................................................................................................................................20
Memory ......................................................................................................................................... 20
Motherboard............................................................................................................................. 20
DIMM ......................................................................................................................................20
BIOS ........................................................................................................................................ 20
Configuration RAM.................................................................................................................20
Video ............................................................................................................................................. 21
VGA Controller........................................................................................................................21
AGP..........................................................................................................................................22
Audio.............................................................................................................................................23
ESS Solo 1 ............................................................................................................................... 23
Real Time Clock............................................................................................................................ 23
Standard I/O................................................................................................................................... 24
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PH440 NLX Motherboard User Guide September 1998
Keyboard and Mouse...............................................................................................................24
Floppy Disk Interface...............................................................................................................24
Serial Ports...............................................................................................................................24
Parallel Port.............................................................................................................................. 24
Additional I/O................................................................................................................................24
IDE Disk Controller............................................................................................................ ..... 24
Universal Serial Bus (USB) .....................................................................................................24
Security..........................................................................................................................................24
Motherboard Power.......................................................................................................................25
Processor Power....................................................................................................................... 25
Battery......................................................................................................................................25
Power Management.......................................................................................................................25
Standby Switch.........................................................................................................................25
Behaviour After AC-Disconnect..............................................................................................25
Sleep State Indication............................................................................................................... 25
System Management...................................................................................................................... 26
Heceta II System Monitor........................................................................................................26
Fan Control.................................................................................................................................... 26
Expansion Slots ............................................................................................................................. 26
Industry Standard Architecture (ISA)......................................................................................26
Peripheral Component Interconnect (PCI)...............................................................................26
Bus Resource Utilisation ............................................................................................................... 27
ISA DMA Channels................................................................................................................. 27
ISA Interrupts........................................................................................................................... 27
PCI Interrupts...........................................................................................................................27
PCI Device Selection (motherboard devices)...........................................................................28
PCI Arbitration......................................................................................................................... 28
5 BIOS Setup & POST 29
BIOS Setup.................................................................................................................................... 29
Control keys............................................................................................................................. 29
Getting help in BIOS Setup......................................................................................................30
Reserving ISA legacy resources...............................................................................................30
Multi-boot facility.......................................................................................................................... 30
Power-on self-test.......................................................................................................................... 31
Recoverable POST errors.........................................................................................................31
Terminal POST errors and beep codes..................................................................................... 32
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PH440 NLX Motherboard User Guide September 1998
6 Electrical 39
Power Requirements......................................................................................................................39
PCB................................................................................................................................................39
7 Connector Assignments 40
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PH440 NLX Motherboard User Guide September 1998
1 O V E RVIEW
PH440 NLX is a Pentium II® processor-based NLX profile motherboard.
The design of PH440 NLX is based around the following components.
♦
Intel Pentium II
♦
Intel 440BX host bridge and system controller.
♦
Intel PIIX4e ISA bridge and peripheral and power management controller.
♦
SMSC 37C677 I/O Combo.
♦
ATI AGP 3D Rage Pro AGP or 3D Rage IIC AGP video controller with SGRAM frame
buffer.
♦
ESS Solo 1 audio controller.
Pentium II
The Pentium
package which also includes a second-level cache. The cartridge plugs into a 242-pin slot
connector (slot 1) on the motherboard and operates at speeds from 233MHz.
440BX North bridge
®
Processor
®
®
processor in Slot 1.
II processor adds MMX technology to the P6 micro-architecture in a cartridge
The 440BX North bridge connects the processor to the SDRAM main memory, an AGP port and
PCI bus interface. The device is housed in a 492-pin BGA package.
PIIX4e ISA bridge
The PIIX4e provides the PCI to ISA bus bridge and contains the system’s RTC, the IDE
interfaces, the DMA and Interrupt Controllers. The PIIX4e also provides ACPI support, an
SMbus controller and all the general purpose I/O ports used on the PH440 NLX motherboard.
The PIIX4e device is packaged in a 324 pin BGA.
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PH440 NLX Motherboard User Guide September 1998
MOTHERBOARD FEATURES
Form factor NLX, 9.0" wide x 11.2" long
Processor Slot 1 with the VRM8.2 regulator on motherboard.
Accepts all Pentium II
Core logic Intel 440BX & PIIX4e
Cache L2 cache included on processor module.
Memory –
RAM
Memory Flash ROM
Buses Supports 4 bus-master PCI slots and 5 ISA slots via riser.
VGA AGP video via ATI Rage IIc or ATI Rage P ro.
Audio –
controller
Hard Disk &
CD-ROM
Floppy Disk 720kB, 1.2MB (3-mode), 1.44MB 3½ drives, 1.2MB 5¼ drives.
Parallel Port IEEE 1284 (ECP & standard) on 25-way D-type
Serial Ports Dual 16550s. Two 9-way D-types on rear edge of motherboard.
USB
Keyboard &
Mouse
Security Chassis intrusion detection via riser.
IR I/O Optional through NLX riser (input only).
Power
Management
System
Management
Plug & Play PC97 and PC98 compliant
Battery back-upOn-board lithium coin cell with 5 years typical life.
3 DIMM sockets to accept 168 pin un-buffered PC100 SDRAM modules.
64-bit or 72-bit ECC with 1-bit correct, 2-bit detect.
2Mb flash ROM. Includes BIOS, Setup-in-ROM, VGA, USB, DMI,
120MB floppy etc.
2 or 4MB SGRAM with upgrades via SODIMM module
Active speaker support only (external). Internal mono speaker and PCB
mounted ‘beeper’. ESS Solo 1 CODEC.
Dual UltraDMA33 interfaces for hard disk and CD-ROM.
Support for 120MB drives via ATA port.
Two ports. Two configurations available as build option. Either two ports
on rear pane l or one on rear and second through NLX rise r.
PS/2-style connectors. USB with legacy support
Green and deep green via system management mode.
ACPI compatible.
Requires logic-controlled PSU.
Standby option with wake-up on interrupt, serial port activity or button.
Hardware monitoring (Voltage, temperature and fan monitor) via Heceta II
device.
®
(100MHz bus) processors
PCB 4-layer NLX form-fa ctor.
All components on top side
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PH440 NLX Motherboard User Guide September 1998
CONFIGURATION OPTIONS
Build-time
The following items can be configurable at build-time and cannot be modified by the user.
♦
Video controller (Rage IIc or Rage Pro).
♦
Video memory and upgrade socket.
♦
AMC connector.
♦
MIDI & joystick header.
♦
Heceta II system monitor.
♦
+5V supply to VGA connector pin 9.
♦
Dual rear USB or single rear and riser.
Contact Mitsubishi Electric Motherboard Division to deter mine available configurations.
User Configurable
The user can configure the following items.
♦
Processor (Intel boxed products)
♦
Main memory DIMMs
♦
Video memory upgrade (where available)
♦
Processor speed (core/bus ratio)
♦
BIOS ROM write enable
♦
Function enable/disable jumpers (audio CODEC, VGA)
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PH440 NLX Motherboard User Guide September 1998
C
BLOCK DIAGRAM
CLOCK BUFFER
MEMORY
DIMMS X 3
AGP BUS
ATI
RAGE
VGA
VGA
MEMORY
SGRAMX2
CORE VOLTAGE
DC-DC
CONVERTOR
MEMORY
BUS
ESS
SOLO1
AUDIO
SLOT1
CPU
HOST BUS
82443BX
NORTHBRIDGE
492 BGA
HECETA 2
ISA BUS
PCI BUS
PIIX4e
324 BGA
MOTHERBOARD
CLOCK
GENERATOR
NLX
RISER
IDE
VGA
MEMORY
UPGRADE
SODIMM 144
XBUS
BUFFER
BIOS ROM
SMSC 37C67X
SUPER I/O
100 PQFP
FD
TSSOP40
VGA
OUTPUT
LINE
OUT
LINE
IN
MIC
IN
USB
REAR PANEL CONNECTORS
SERIAL
COM2
SERIAL
COM1
PARALLEL
PORT
KEYBOARD
& MOUSE
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PH440 NLX Motherboard User Guide September 1998
2 INSTALLATION GUIDE
Warning
Static electrici ty can cau se pe rmanent damage to electr onic comp onen ts. You shou ld be
aware of this risk, and take precautions against the discharge of static electricity.
1
J8
J7
J1
J2
J3
J4
9
J6
8
7
6
D
C
A
B
2J9
G
E
3
F
H I
4
J
1 3V Lithium cell
2 Processor socket
3 Processor fan power
4Memory DIMMs
5 Multimedia upgrade
connector
6Video memory
upgrade socket
7 ATAPI CD Audio
8 MIDI/joystick header
9 NLX riser connector
J1-4 Processor speed
selection
J5 Video enable jumper
J6 Motherboard audio
enable
J7 BIOS write protect
J8 Configuration
5
J5
memory clear
J9 Motherboard
speaker enable
A Line input
B Microphone input
C Line output
DUSB
E Serial port 2
F Keyboard
G Mouse
H Serial port 1
I VGA monitor
J Parallel port
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PH440 NLX Motherboard User Guide September 1998
Processor Core/Bus Ratio – J1-J4
J1 J2 J3 J4 Ratio Speed at
100MHz
X X 3.5 350
X X X 4.0 400
X X 4.5 450
X – Jumper fitted
VGA Enable – J5
1-2 Disable on-board VGA controller
2-3 Enable on-board VGA controller
PCI Audio CODEC Enable – J6
1-2 Enable audio CODEC
2-3 Disable audio CODEC
BIOS Program Enable – J7
1-2 Disable BIOS updates
2-3 Enable BIOS updates
Clear Configuration (CMOS) Memory – J8
(Ensure AC is disconnected from the power supply before moving this jumper)
1-2 Normal operation
2-3 Clear CMOS (jumper must be returned to normal position before power-on)
Enable Motherboard Speaker – J9
1-2 Enabled
2-3 Disabled
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PH440 NLX Motherboard User Guide September 1998
3 UPGRADING THE MOTHERBOARD
Caution
Care must be taken in the purchase of upgrade parts to ensure both compatibility with the
system and the compliance with appropriate approvals and certification, e.g. CE marking
within Europe. Using non-approved parts may invalidate your warranty and system approvals.
Upgrading the motherboard is not difficult, but if you do not feel confident about the work
involved, you may wish to have your supplier or service organisation complete it for you.
Warning
Never carry out any work inside the computer with AC power applied. Turn off the computer
and unplug all power cords before starting work.
ADDING MORE MEMORY
The motherboard has three DIMM (Dual Inline Memory Module) sockets, each of which accepts
DIMMs of up to 128 Mbytes, in any combination. The slot furthest from the processor (MM1)
should be used first.
DIMM specification
The memory modules should meet the PC100 specification.
Fitting and removing DIMMs
Read all of these instructions through carefully before you start work.
Turn off the computer and unplug all power cords. Take suitable anti-static precautions and
remove the system cover. Leave the DIMM in the antistatic packaging until the last possible
moment and when you do take the DIMM out of its packaging, hold it by its ends and avoid
touching the metal contacts.
Follow the diagrams and simple instructions on the following pages to insert eac h DIMM.
Afterwards
After you have fitted new modules, check that the system recognises all the memory. If not,
check that you have:
♦
Correctly fitted the DIMMs in their slots.
♦
Installed DIMMs of the correct type.
It may be necessary to refit the original memory to check if there is a problem with your new
modules.
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PH440 NLX Motherboard User Guide September 1998
Fitting a DIMM
Do not use excessive force. If the module will not fit easily, remove it and start again.
The DIMM is inserted vertically and held in place by the clips at each end.
Removing a DIMM
Do not use excessive force. If the module will not come free easily, check that the holding clips
are clear of the module ends.
Press the tabs on both of the socket’s end clips at the same time. This releases the DIMM and
lifts it partly out of the socket.
ADDING MORE VIDEO MEMORY
Video memory is memory reserved for use by the on-board video controller. More video
memory can provide more colours or higher resolutions to an extent determined by the
capabilities of your monitor.
Check the amount of video memory fitted in your computer. You must fit a module of equal
value. For example, if your computer has 2MB of video memory, you mu st fit a 2MB SODIMM
(Small Outline Dual Inline Memory Module).
1. Turn off the computer and unplug all power cords.
2. Take suitable anti-static precautions and remove the system unit cover.
3. Remove any expansion cards that impede access to the video memory upgrade socket (see
the motherboard diagram at the start of this chapter).
4. Unpack the upgrade kit. Hold the SODIMM chip by its edges and be careful not to touch
the metal pins.
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PH440 NLX Motherboard User Guide September 1998
5. Insert the SODIMM into the socket as shown in the illustration.
6. Replace any expansion cards you removed earlier and refit the system unit cover.
You can now reconfigure your operating system to use the expanded capabilities of the video
controller.
THE PROCESSOR ASSEMBLY
To remove the existing processor
1. Turn off the computer and unplug all power cords. Take suitable anti-static precautions and
remove the system cover.
2. If the system was in use just before starting this procedure, the processor may be hot, wait
until it cools.
3. If there are any expansion cards fitted that obstruct access to the processor, you may have to
remove them.
4. See ‘A’ in the illustration. Carefully squeeze together the grips at both ends (1) of the
heatsink support bracket (2) and slide it away.
◊
Some designs of heatsink do not have this bracket fitted.
5. See ‘B’ in the illustration. Press in the clips (1) at both ends of the top of the processor body
to depress the retaining pins out of the vertical supports. Then lift the processor body (2) out
of the socket.
Caution
Handle the processor with care, by the body only. Avoid touching the connector at the
bottom. Store in an antistatic container.
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PH440 NLX Motherboard User Guide September 1998
B
2
1
To fit a new processor
1. Take the processor out of its anti-static packaging. Hold the processor by its edges, or its
heatsink and avoid touching the edge connector.
◊
The upgrade processor and the socket are keyed to ensure that the processor is installed in
the correct orientation. It will only fit into the socket one way.
2. Slide the processor into the vertical guides and down into the socket, making sure that it is
correctly aligned and that you do not bend or otherwise damage the supports. Do not use
excessive force.
3. Apply just enough pressure to overcome the resistance offered by the socket. Ensure that
the retaining pins snap into the sockets on the end supports.
4. Refit the heatsink support, making sure that it is correctly and fully seated on the pins. It
should snap into place.
◊
This bracket may not be fitted with some heatsink desi gns, or may not be needed with the
new processor.
A
1
2
5. The upgrad e or overdrive processor may have its o wn cooling fan b uilt into the heatsink.
This will have a power lead that will need to be connected to the processor fan power
(marked ‘3’ on the motherboard diagram, see installation guide).
◊
If the fan has only a two-pin connection, ensure it is connected to pins 1 and 2.
6. Now adjust the processor multiplier speed jumpers on the motherb oard (see installation
guide) in conjunction with the new processor’s data sheet.
Warning
The processor requires continuous airflow.
7. Return to their original position any expansion cards that had been removed earlier, then
refit and secure the system cover.
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PH440 NLX Motherboard User Guide September 1998
REPLACING THE BATTERY FOR THE CONFIGURATION CMOS
The computer keeps a record of its current hardware configuration in a CMOS memory chip,
which is sustained by a small battery. This battery has a life of up to 5 years. If you find that you
have to reconfigure the computer every time you turn it on, or the date and time seem to be
dramatically incorrect, the battery is probably failing and needs to be replaced.
The battery is a 3-volt lithium type (CR2032 or equivalent) typically used in calculators, watches
and other small, battery-powered electronic items.
Read carefully the following instructions before commencing work.
1. Turn off the computer and unplug all power cords.
Warning
Do not use a metal or other conductive implement to remove the battery. If a short-circuit is
accidentally made between its positive and negative terminals, it may cause the battery to
explode.
2. Using a non-conductive implement, release the latch that holds the battery in place. The
battery will pop up allowing you to lift it out of the holder.
3. Taking care not to touch the top or bottom surface of the new battery, pick up the
replacement with the positive (+) terminal upwards and press the battery into the holder
using a non-conductive implement.
4. Dispose of the old battery in accordance with the battery manufacturer’s instructions.
When you next turn on the computer you will have to run the BIOS Setup utility to enter the
hardware configuration.
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PH440 NLX Motherboard User Guide September 1998
4 E LECTRO N ICS
PROCESSOR
The PH440 NLX motherboard accepts the following Pentium II® processors operating at a bus
speed of 100MHz.
Processor Speed
(MHz)
350 3.5 100
400 4.0 100
450 4.5 100
The processor core voltages are generated by switched-mode regulators on the motherboard to
the Intel VRM8.2 specification. The design meets the 100MHz Slot 1 flexible motherboard
recommendations and supports boxed products (processors), including a CPU fan supply.
CORE LOGIC
Core/bus ratio Bus speed MHz
The core logic is based around the Intel 440BX PCI AGP Controller (PAC) and the PIIX4e
multi-function ISA bridge. The features of each are summarised below.
440BX Host bridge
♦
Slot1 host bridge
♦
DRAM controller supporting SDRAM main memory with optional ECC
♦
PCI 2.1 compliant
♦
AGP compliant target
♦
Virtual PCI to PCI bridge to support AGP bus
♦
Packaged in a 492 Pin BGA
PIIX4e Multifunction ISA Bridge
♦
PCI to ISA bridge
♦
Dual UltraDMA33 IDE controller
♦
ISA system peripherals (timers, DMA etc.)
♦
Dual USB controller (12Mbps or 1.5Mbps)
♦
SMbus controller (motherboard management)
♦
Real-time clock
♦
ACPI power management logic
♦
Packaged in a 324 pin BGA
The two IDE interfaces are completely independent and can operate concurrently. Both can also
be configured as a PCI bus master.
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PH440 NLX Motherboard User Guide September 1998
Concurrency
The major busses (processor, memory, PCI and AGP) all op e rate independently to achieve a
high degree o f concurrency. Most CPU-DRAM and AGP-DRAM transfe rs can occur
concurrently with PCI transfers and so consume no P CI bus bandwidt h.
LEVEL 2 CACHE
The second level cache is contained within the processor module. There is no provision for a
third level cache.
Cache size is determined by the type of CPU fitted, refer to your CPU manufacturer for this
information.
MEMORY
Motherboard
There is no main memory fitted directly to the motherboard.
DIMM
There are three DIMM sockets on the motherboards that accept 168-pin un-buffered SDRAM
modules to the PC100 memory module specification. All modules must support SPD (serial
presence detect) to allow the BIOS to determine the memory configuration and set up the chipset
optimally. These modules contain a small EEPROM that describes the mod ule capabilities in
detail - including speed, capacity and organisation.
BIOS
♦
64-bit or 72-bit (ECC) modules.
♦
2 or 4 bank organisation
♦
Asymmetric or symmetric memory addressing.
♦
Single or double-sided modules.
The BIOS is contained in a flash ROM device soldered directly to the motherboard and includes
the code listed below. The motherboard will automatically perform a BIOS reco very operation if
it detects a valid recovery disk during the boot sequence. An override jumper that prevents all
writes (recovery or update) provides update protection. The BIOS ROM is accessed as a single
linear region in the memory space from 4GB-128kB (0FFFE0000 - 0FFFFFFFFh) and copied at
the top of ISA memory (0E0000 - 0FFFFFh).
♦
Core motherboard BIOS
♦
VGA BIOS (ATI RAGE PRO or RAGE IIC)
♦
USB, including legacy support
♦
DMI
♦
Setup-in-ROM
♦
Intel Pentium II
♦
Power and system management code
®
microcode update support and code
Configuration RAM
There is no support for configuration RAM other than the CMOS RAM within the RTC.
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PH440 NLX Motherboard User Guide September 1998
VIDEO
VGA Controller
The VGA controller is an ATI Rage Pro or ATI Rage IIC device packaged in a 256 ball BGA.
Video memory is via 2 SGRAM devices mounted on the motherboard (to give 2MB or 4MB)
and an SODIMM connector that accepts SGRAM modules (2MB or 4MB extra). The VGA
controller can be disabled via a motherboard jumper. It also provides an I
video features. The VGA controller has the following features.
♦
AGP compliant to 133MHz (66MHz option).
♦
230MHz integrated RAMDAC.
♦
100MHz 64-bit SGRAM video memory (800MBps).
♦
DDC1, DDC2B, DPMS and Energy Star.
♦
2D acceleration.
♦
3D acceleration with triangle setup engine and texture cache (Rage Pro only).
♦
Motion video acceleration with MPEG2 assist.
♦
Multimedia channel for upgrades (AMC connector).
2
C bus to access other
The allowable memory upgrade paths are shown in the table below. The entries are the total
memory capacity available by fitting 2MB or 4MB modules.
Motherboard
Memory
1
2MB SODIMM 4MB SODIMM
2
0MB 2MB 4MB
2MB 4MB
4MB 8MB
The amount of video memory fitted to the motherboard is automatically detected by the BIOS.
Video memory upgrade modules do not require an SPD ROM.
1 2MB builds are based on 8Mb devices. 4MB builds use 16Mb devices.
2
4MB modules must be based on 16Mb devices.
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PH440 NLX Motherboard User Guide September 1998
2D Display modes and maximum frame rates
3
256 colours 65536 colours 16.7M colours
2MB 2MB 4MB 2MB 4MB
640 x 480 200 200 200 200 200
800 x 600 200 200 200 160 160
1024 x 768 150 150 150 120
1152 x 864 120 120 120 85
1280 x 1024 100 100 85
1600 x 1200 76 76
Frame
Buffer
MB
Screen
Resolution
Colour
Depth
Bits/pixel
Display
Buffer
MB
Z Buffer Texture
4
Memory
MB
5
2 512 x 384 16 0.38 x 2 0.38 0.88
2 640 x 480 16 0.59 x 2 0.59 0.24
4 640 x 480 16 0.59 x 2 0.59 2.24
4 640 x 480 32 1.17 x 2 0.59 1.07
4 800 x 600 16 0.92 x 2 0.92 1.25
8 1024 x 768 32 3.00 x 2 1.50 0.50
8 1280 x 1024 16 2.50 x 2 2.50 0.50
AGP
The Accelerated Graphics Port (AGP) is hardware interconnect designed to improve the
performance of 3D graphics displays. The specification is based on PCI but is point-to-point and
provides for data rates over 500MBps. The implementation on this motherboard is a private local
bus between the chipset and the Rage Pro video controller. The bus can operate in 1X or 2X
modes as defined by the AGP specification. When a Rage IIc device is fitted the interface
between the 443BX North Bridge and the VGA controller operates as a 66MHz PCI bus and no
AGP signalling occurs.
Two levels of performance gain are achieved:
♦
2D Operation. Since the AGP operates at 66MHz, twice the data rate of the PCI bus is
available to normal video traffic.
♦
3D Operation (Rage Pro only). Address translation logic and 133MHz bus mastering
allows the video controller to maintain texture information in main memory - reducing the
need for a large frame buffer.
3 These are the primary display modes. Others are available.
4
Front and back buffers.
5
Main memory can be used for additional texture storage via AGP.
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PH440 NLX Motherboard User Guide September 1998
AUDIO
The audio subsystem is based around an ESS Solo1 CODEC. The audio subsystem can be
completely depopulated to leave the standard PC beep function.
ESS Solo 1
♦
PCI bus interface
♦
Internal FM synthesiser
♦
Dual DMA support with FIFO & full duplex operation
♦
Programmable power management
♦
Joystick and MPU-401 compatible MIDI interfaces
♦
5 channel input mixer
One power amplifier is used - a National Semiconductor LM4880 ’Boomer’ to drive the LINEout jack socket and the optional internal speaker (via the NLX riser). The microphone input
provides power to enable condenser microphones to be used.
Channel
CODEC LINE Rear line input jack socket
CODEC AUXA CD input (from riser) or from motherboard connector
CODEC AUXB VGA AMC Connector
CODEC MIC Rear microphone jack socket or Riser connection
CODEC Mono In Modem in audio from Riser
The following audio connectors are supported.
♦
Rear 3.5mm jack microphone input with phantom power
♦
Rear 3.5mm jack LINE in
♦
Rear 3.5mm jack LINE out
♦
Internal CD-ROM stereo audio on 4-pin ATAPI connector
♦
AMC connector stereo audio
♦
Modem audio via NLX riser auxiliary edge connections
REAL TIME CLOCK
The real time clock is located in the PIIX4e and includes 256 bytes of battery backed RAM with
two lockable ranges. The clock includes a date alarm and operates from a 32.768kHz crystal. The
3V lithium cell provides data retention for up to 5 years of normal use. Note that the battery is
used only when AC power is not applied to the system (or a standby 5V rail is not p r ovided).
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PH440 NLX Motherboard User Guide September 1998
STANDARD I/O
The SMSC 37C677 Super IO controller provides standard I/O. This comprises the four functions
described below. It is packaged in a 100-pin PQFP and is PC98 and ACPI compliant.
Keyboard and Mouse
The keyboard and mouse controller uses the Phoenix Multikey version 1.40 firmware. PS/2 style
keyboard and mouse ports are provided on the rear panel. The ports are interchangeable.
Floppy Disk Interface
Standard 2-mode and 3-mode 3½” drives are supported.
The floppy disk drive signals are routed from the motherboard to the NLX riser and the floppy
disk drive connector is mounted on the NLX riser.
As per the NLX specification, all floppy disk input signals to the motherboard must be pulled up
on the NLX riser.
Serial Ports
There are two standard COM ports, which are wired to two standard 9-way D-type connectors on
the rear panel. The maximum Baud rate is 115K bits per second.
Parallel Port
This is EPP 1.7/1.9 and IEE1284 (ECP) compliant and is compatible with a standard (output
only) PC parallel port as well as a bi-directional (PS/2 style) parallel port. There is a 25-way Dtype connector on the rear panel.
ADDITIONAL I/O
IDE Disk Controller
Two UltraDMA33 IDE ports are provided with the controller integrated into the PIIX4e. This
allows for a maximum of four drives to be connected - two to each port. Normally the primary
port would be used for hard disk drives and the secondary port for CD-ROM or DVD drives.
120MB floppy drives have IDE interfaces.
Both IDE controllers are independent and both can bus-master data into memory for improved
performance. UltraDMA33 drives have a theoretical maximum transfer rate of 33MBs
interfaces are also, of course, compatible with standard ATA drives.
Universal Serial Bus (USB)
The motherboard supports two USB ports with the controller integrated into the PIIX4e. The
motherboard has a build option of a dual USB connector at the rear or with a single on the rear
and with the second port routed to the NLX riser to cater for an optional front USB connector.
The standard build is with a dual USB connector at the rear.
SECURITY
-1
. The
There is chassis intrusion detection available on motherboards with the Heceta II fitted. This is
capable of detecting an intrusion even when AC is disconnected (the logic is powered from the
3V lithium cell).
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MOTHERBOARD POWER
Processor Power
A voltage regulator conforming to the Intel VRM8.2 standard supp lies power for the processor
core. The motherboard automatically selects the correct processor voltage.
Battery
An IEC-type CR2032 3V lithium coin cell and holder are fitted to the board. Note that when the
motherboard is powered off but the AC remains connected (the standby rail is active) the battery
is not used.
POWER MANAGEMENT
Standby Switch
The motherboard supports an ACPI-compliant standby switch for use with a soft-switch power
supply. The action of the switch is under a combination of hardware and software control and is
summarised in the table below. The motherboard will power off regardless of the state of
software if the switch is held down for more than 4 seconds.
State Action after switch pressed
Standby (soft power off) Machine powers up and executes POST
POST, DOS or APM O/S Machine powers off into standby state
Behaviour After AC-Disconnect
The ‘Wake on AC connect’ BIOS option and the state of the lithium cell determine the
behaviour of the motherboard after an AC-disconnect. The table below describes this.
Conditions Action on AC Reconnect
CMOS RAM cleared. This is the state of a
new motherboard before assembly. This also
occurs after battery removal or failure.
CMOS RAM not cleared and ‘Wake on AC
connect’ was set to ‘Enabled’.
CMOS RAM not cleared and ‘Wake on AC
connect’ was set to ‘Disabled’. This is the
default state. Resume events will be lost if an
AC power failure occurs.
Sleep State Indication
Indication of system activity states is provided by the signal ‘STANDBY_LED#’ to the NLX
riser (pin B159). If this signal is asserted (low) then the system is in a power-managed state. The
implementation of coloured LEDs to indicate system power states is dependent on the NLX riser
used.
Motherboard waits for standby switch
to be pressed.
Motherboard fully powers up without
intervention.
Motherboard waits for standby switch
to be pressed.
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SYSTEM MANAGEMENT
There are three main elements to the system management hardware.
♦
A Heceta II system monitor
♦
The PIIX4e power management devices 9 and 10
♦
Processor thermal diode ADCs
Heceta II System Monitor
The Heceta II provides the system monitor functions as described below and is accessed via the
PIIX4e SMbus interface. It provides the following functions.
♦
Fan monitoring. The two inputs to the Heceta II device monitor the first two NLX
“fantach” signals.
♦
Monitoring of system +12V, +5V, +3.3V, CPU core, -12V and 2.5V power rails
♦
Monitoring of system temperature (actually the motherboard surface temperature)
♦
Monitoring of chassis intrusion (top cover)
FAN CONTROL
The NLX system fan is controlled by the motherboard such that it stops rotatin g when the system
is in ‘Suspend’ mode. As a build option, the PH440 NLX motherboard supports variable fan
speed control in which the speed of the fan is raised as the temperature of the processor
increases. This considerably reduces fan noise in normal operation.
The variable fan speed o ption can onl y be used with an ACPI-aware operating system (such a s
Windows 98) and a 100MHz-bus Pentium® II processor.
EXPANSION SLOTS
The ISA and PCI expansion slots are located on the riser card. The ISA and PCI signals are
routed through an edge connector on one edge of the board which mates with the NLX riser.
As per the NLX specification, the motherboard requires that the PCI signals are correctly
terminated and pulled up on the NLX riser for the motherboard to operate properly.
Industry Standard Architecture (ISA)
A maximum of 5 ISA slots is supported via the NLX riser.
Peripheral Component Interconnect (PCI)
A maximum of 4 PCI cards is supported via the NLX riser, each with bus master support.
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BUS RESOURCE UTILISATION
ISA DMA Channels
DMA Data Width Usual Assignment Audio
0 8-bit ISA card option
1 8-bit ISA card default 8-bit
2 8-bit Floppy disk controller
3 8-bit ECP parallel port option
4 - DMAC daisy chain
5 16-bit ISA card
6 16-bit ISA card
7 16-bit ISA card
Shaded areas indicate DMA channels not normally available on the ISA bus
ISA Interrupts
IRQ Usual Ass ign men t Fixed? PCI
IRQ0 System timer YES
IRQ1 Keyboard NO
IRQ2 IRQ8 - 15 Cascade YES
IRQ3 Serial port 2 NO X
IRQ4 Serial port 1 NO X
IRQ5 ISA/PCI bus (Audio) NO X
IRQ6 Floppy disk NO X
IRQ7 P a r a llel p ort NO X
IRQ8 Real time clock NO
IRQ9 ISA/PCI bus X
IRQ10 ISA/PCI bus X
IRQ11 ISA/PCI bus X
IRQ12 PS/2 Mouse NO X
IRQ13 Floating point error YES
IRQ14 Primary hard disk If drive connected X
IRQ15 Secondary hard disk NO X
The last column indicates which ISA interrupts PCI devices can be routed to.
PCI Interrupts
Channel Device
INTA# Slots
INTB# Slots
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INTC# Audio & Slots
INTD# Video & slots
PCI Device Selection (motherboard devices)
Bus
number
0 0 0 11 Host bridge
0 1 0 12 PCI to PCI bridge
0 6 0 17 PCI Audio CODEC
0 7 0 18 South bridge
0 7 1 18 IDE controller
0 7 2 18 USB contro ller
07 3 18
1060 16 AGP video controller
PCI Arbitration
PIIX4e request
level
00PCI slot 1
10PCI slot 2
20PCI slot 3
30PCI slot 4
4 0 PCI audio CODEC
Device
number
(decimal)
Function
number
Bus Function
Address
line
Function
Power management &
SMbus controllers
Note that the arbiter implements a round robin scheme and thus no request level has fixed
priority over another. The AGP video controller does not consume any PCI bandwidth and
competes for memory resource independently.
6
PCI to PCI bridges translate address lines from AD16. The host bridge translates
address lines from AD11.
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5 BIO S S ET UP & POST
BIOS (pronounced “bye-oss”) stands for ‘basic input/output system’. The BIOS mediates
between the computer’s hardware – the processor, memory, and so on – and its software – the
operating system and your programs. The BIOS program is kept in permanent, read-only
memory or ROM (although if necessary it can be upgraded by an authorised maintainer).
BIOS Setup is a helpful utility that forms part of the BIOS pr ogram. It allows you to view and
alter the computer’s hardware configuration. It is also used to configure various security and
power-saving options. Configuring the computer is necessary to ensure that the software you use
can recognise and exploit the hardware’s capabilities.
The current configuration is kept in a special area of memory, called CMOS memory, and
maintained by a battery so that the configuration is preserved even while the computer is switched
off.
Whenever the computer is turned on, the BIOS power-on self-test (POST) routine tests various
hardware components, including memory, and compares the actual configuration of the computer
with that recorded in permanent (CMOS) memory.
A configuration discrepancy could arise if you have just installed or removed a hardware option
(for example, if you have added or replaced an expansion card).
BIOS SETUP
To start the BIOS Setup utility:
1. Turn on or restart your computer.
2. When you see
‘Press <F2> to enter setup’
appear on the screen, press the F2 key.
3. If you have previously defined a Supervisor password, you are prompted for it before BIOS
Setup starts.
Control keys
Use the keys listed in the legend bar at the bottom of the BIOS Setup screen to make your
selections or exit the current menu.
Sub-menus are marked by a
cursor to the sub-menu you want, then press
Changeable fields are enclosed in square brackets. To select an item, use the arrow keys to move
the cursor to the field you want. Then use the
that field.
Press To
F1 or Alt-h View a general help topic. Press esc to close the help window.
Esc
Left or Right arrow Select a different menu.
Up or Down arrow Select fields on the current menu.
Plus (+) or F6 or Spacebar Select the next value for the current field.
Minus (-) or F5 Select the previous value for the current field.
pointer. To display a sub-menu, use the arrow keys to move the
ENTER.
PLUS (+) and MINUS (–) keys to select a value for
Exit the current menu.
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Press To
Enter
Home or End Move the cursor to the top or bottom of the current menu.
Page up or Page down Move the cursor to the next or previous page of the current menu.
F9
F10
Caution
The default BIOS settings may not be appropriate for your particular system. Make a note of
the current settings before pressing
menu.
Getting help in BIOS Setup
You can at any t ime get gene ral help about the control keys by pressing the F1 key.
The help window on the right-hand side of each menu displays help text for the currently-
selected field. It changes as you move the cursor from one field to another.
Reserving ISA legacy resources
To reserve interrupts and upper memory block (UMB) regions for ISA expansion cards, go to the
Advanced menu, select PCI Configuration, then select PCI/PNP ISA IRQ Resource
Exclusion or PCI/PNP ISA UMB Region Exclusion as required.
MULTI-BOOT FACILITY
Make a selection from the menu bar or enter a sub-menu.
Restore the default settings for the fields on the curre nt menu.
Save the changes you’ve made and exit from BIOS Setup.
F9 or using the Load Setup Defaults option of the Exit
Immediately after the first screen, a se cond screen displays various POST messages such as the
memory test. While this screen is on display, a message at the bottom says: ‘
enter setup or <ESC> to enter Boot Menu’. Even if this message is not displayed, you
can press the <ESC> key and this menu will appear just before booting:
Boot Menu
1. Diskette Drive
2. Removable Devices
3. Hard Disk Drive
4. ATAPI CD-ROM Drive
5. Network Boot
< Enter Setup>
This menu can be used to temporarily use another drive or device to boot your system, for
example a bootable CD-ROM, without having to enter the BIOS setup. Simply use the up and
down arrows to make a selection. This change will not be permanent and the system boot will
revert to the normal BIOS setting the next time you switch on your system.
Press <F2> to
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POWER-ON SELF-TEST
Recoverable POST errors
Whenever a recoverable (non-terminal) error occurs during POST, the BIOS displays an error
message describing the problem (the most usual are described below). After some messages, you
may be prompted to
<F2> to enter Setup
In general, you should respond to these errors as follows:
♦
Shut down the computer, wait 20 to 30 seconds, and then turn it on again to see if the
problem is still reported.
♦
Check that all external cables are securely connected.
♦
Try running the BIOS Setup utility to reconfigure the system. If the computer will not
BOOT after you make changes in BIOS Setup, try returning to the original settings.
♦
Open up the system unit and check that all internal signal and power cables are securely
connected.
♦
If the problem persists, contact your supplier or authorised maintainer.
System Configuration Data updated
This message indicates that the system configuration has changed (such as an expansion
card has been added) and that the configuration data has therefore been updated.
System Configuration Data Writ e Error
This message indicates that the system configuration has changed (such as an expansion
card has been added) but the configuration data could not be updated. This is normally
caused by the BIOS program enable jumper being in the disable position. For configuration
changes to be correctly recorded the jumper must be in the enable position.
Invalid System Configuration Data – run configuration utility
The data describing the system configuration is incorrect and should be updated. This can
be done by checking the ‘Reset Configuration Data’ in BIOS Setup followed by ‘Save and
Exit’.
Diskette drive A error
Drive A: is present but fails the POST diskette tests. C heck that t he drive is defined
correctly in BIOS Setup. If necessary, open the system unit and check that the drive’s signal
(ribbon) cable is connected.
System/Extended/Shadow RAM failed at offset: xxxx Failing bits: yyyy
System, extended or shadow memory is not working, or not configured properly, at offset
xxxx. The hexadecimal number yyyy is a map of the bits at the address that failed the
memory test. Each “1” in the map represents a failed bit.
Fixed disk X failure or Fixed disk controller failure
A fixed (hard) disk drive is not working or not configured properly. Check that the drive is
defined correctly in BIOS Setup. If necessary, open the system unit and check that the
drive’s signal (ribbon) cable is connected.
Incorrect drive A type - run SETUP
The diskette drive is not correctly specified in BIOS Setup.
Invalid NVRAM media type
Problem with NVRAM (non-volatile random-access memory).
Press <F1> to resume, <F2> to enter Setup
.
or just
Press
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Keyboard error [nn] or Keyboard controller error
There is a problem with the keyboard or (less likely) the standard I/O controller on the
motherboard. If POST discovers a stuck key it displays its scan code.
Operating system not found
An operating system cannot be located either on a system diskette or on a hard disk. Start
BIOS Setup and check that the diskette and/or hard disk drives are specified correctly.
Parity check 1 xxxx or Parity check 2 xxxx
Parity error found on the system (1) or I/O (2) bus. The BIOS attempts to locate and display
the address xxxx. If it cannot locate the address, it displays “????”.
Previous boot incomplete - default configuration used
The previous POST did not complete successfully. POST loads d efault values and o f fers to
start BIOS Setup. If the failure was caused by incorrect values and they are not corrected,
the next boot will likely fail too.
Real-time clock error
Enter BIOS Setup and check the System Time and System Date settings on the Main me nu.
System battery is dead - replace and run Setup
Replace the configuration battery as instructed in the previous chapter, then use BIOS
Setup to reconfigure the system.
System cache error - cache disabled
The RAM cache failed POST and BIOS disabled it.
System CMOS checksum bad - run Setup
System CMOS has been corrupted or modified incorrectly, perhaps by an application
program that changes data stored in CMOS. Run BIOS Setup and reconfigure the system
either by getting the default values or by making your own selections.
Terminal POST errors and beep codes
There are several POST routines that shut down the computer if they fail. If possible, the BIOS
sounds a sequence of beeps to identify the point at which POST failed. The most usual errors are
listed below.
The BIOS also issues one long tone followed by two short tones if the video system is faulty or if
an external ROM module (including video ROM) fails.
Turn off the computer for 30 seconds and then try again. If the fault persists, make a note of the
error code (if any) and call your supplier or authorised maintainer.
Beeps Test which failed
1-2-2-3 BIOS ROM checksum
1-3-1-1 DRAM refresh.
1-3-1-3 8742 keyboard controller
1-3-4-1 RAM failure on address line.
1-3-4-3 RAM failure on data bits of low byte of memory bus.
1-4-1-1 RAM failure on data bits of high byte of memory bus.
2-1-2-3 Check ROM copyright notice
2-2-3-1 Test for unexpected interrupts
1-2 Vi deo configuration failure, or option ROM checksum failure. (One long, two
short beeps.)
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The BIOS also issues Port 80h codes that can be displayed using a suitable diagnostic card. The
codes can be used to determine the failure.
Code POST Routine Description
02h Verify Real Mode
03h
04h
06h
08h
09h
0Ah
0Bh
0Ch
0Eh
0Fh
10h
11h
12h
13h
14h
16h
17h
18h
1Ah
1Ch
20h
22h
24h
26h
28h
29h
2Ah
2Ch
2Eh
2Fh
30h
32h
33h
34h
35h
Disable Non-Maskable Interrupt (NMI)
Get CPU type
Initialise system hardware
Initialise chipset with initial POST values
Set IN POST flag
Initialise CPU registers
Enable CPU cache
Initialise caches to initial POST values
Initialise I/ O component
Initialise the local bus IDE
Initialise Power Management
Load alternate registers wi th init ial PO ST values
Restore CPU control word during warm boot
Initialise PCI Bus Masteri ng de vic es
Initialise keyboard controller
BIOS ROM checksum
Initialise cache before memory autosize
8254 timer initialisation
8237 DMA controller initialisation
Reset Programmable Interrupt Controller
Test DRAM refresh
Test 8742 Keyboard Controller
Set ES segment register to 4 GB
Enable A20 line
Autosize DRAM
Initialise POST Memory Manager
Clear 512 KB base RAM
RAM failure on address line
RAM failure on data bits of low byte of memory bus
Enable cache before system BIOS shadow
RAM failure on data bits of high byte of memory bus
Test CPU bus- clock frequency
Initialise Phoenix Dispatch Manager
Test CMOS RAM
Initialise alternate chipset registers.
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Code POST Routine Description
36h
37h
38h
39h
3Ah
3Ch
3Dh
42h
44h
45h
46h
48h
49h
4Ah
4Bh
4Ch
4Eh
50h
51h
52h
54h
56h
58h
59h
5Ah
5Bh
5Ch
5Eh
60h
62h
64h
66h
67h
68h
69h
6Ah
6Bh
6Ch
6Eh
Warm start shut down
Reinitialise the chipset (MB only)
Shadow system BIOS ROM
Reinitialise the cache (MB only)
Autosize cache
Advanced configuration of chipset registers
Load alternate registers with CMOS values
Initialise interr upt vect ors
Initialise BIOS interrupts
POST device initialisation
Check ROM copyright notice
Check video configuration against CMOS
Initialise PCI bus and devices
Initialise all video adapters in system
Display QuietBoot screen
Shadow video BIOS ROM
Display BIOS copyright notice
Display CPU type and speed
Initialise EISA board
Test keyboard
Set key click if enabled
Enable keyboard
Test for unexpected interrupts
Initialise POST display service
Display prompt "Press F2 to enter SETUP"
Disable CPU cache
Test RAM between 512 and 640 KB
Base address
Test extended memory
Test extended memory address lines
Jump to UserPatch1
Configure advanced cache registers
Initialise Multi Processor APIC
Enable external and CPU caches
Setup System Management Mode (SMM) area
Display external L2 cache size
Customise defaults
Display shadow- area message
Display possible high address for UMB recov ery
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Code POST Routine Description
70h
72h
74h
76h
77h
78h
79h
7Ah
7Ch
7Eh
80h
81h
82h
83h
84h
85h
86h
87h
88h
89h
8Ah
8Bh
8Ch
8Eh
8Fh
90h
91h
92h
93h
95h
96h
97h
98h
99h
9Ah
9Ch
9Dh
9Eh
9Fh
Display error messages
Check for configuration errors
Test real- time clock
Check for keyboard errors
SMBus init devices
Initialise system monitor and check for intrusion
PCI audio init
Test for key lock on
Set up hardware interrupt vectors
Initialise coprocessor if present
Disable onboard Super I/ O ports and IRQs
Late POST device initialisation
Detect and install external RS232 ports
Configure non- MCD IDE controllers
Detect and install external parallel ports
Initialise PC- com patible PnP ISA devices
Re- initialise onboard I/ O ports.
Configure Motheboard Configurable Devices
Initialise BIOS Data Area
Enable Non- Maskable Interrupts (NMIs)
Initialise Extended BIOS Data Area
Test and initialise PS/ 2 mouse
Initialise floppy controller
Autotype
Determine number of ATA drives
Initialise hard- disk controllers
Initialise local- bus hard- disk controllers
Jump to UserPatch2
Build MPTABLE for multi- processor boards
Install CD ROM for boot
Clear huge ES segment register
Fixup Multi Processor table
Search for option ROMs. One long two short beeps on checksum failure
Check for SMART Drive
Shadow option ROMs
Set up Power Management
Security init
Enable hardware interrupts
Determine number of ATA and SCSI drives
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Code POST Routine Description
A0h
A2h
A4h
A8h
AAh
ACh
AEh
B0h
B1h
B2h
B4h
B5h
B6h
B7h
B8h
B9h
BAh
BBh
BCh
BDh
BEh
BFh
C0h
C1h
C2h
C3h
C4h
C5h
C6h
C7h
C8h
C9h
D2h
E0h
E1h
E2h
E3h
E4h
E5h
Set time of day
Chec k key lock
Initialise typematic rate
Erase F2 prompt
Scan for F2 key stroke
Enter SETUP
Clear IN POST flag
Check for errors
ROMPilot unload
POST done - prepare to boot operating system
One short beep before boot
Terminate QuietBoot
Check password (optional)
ACPI initialisation
Clear global descriptor table
Clean up all graphics
Initialise DMI parameters
Initialise PnP Option ROMs
Clear parity ch+ eckers
Display MultiBoot menu
Clear screen (optional)
Check virus and backup reminders
Try to boot with INT 19
Initialise POST Error Manager (PEM)
Initialise error logging
Initialise error display function
Initialise system error handler
Dual cmos init
Dock init
Dock init late
Force recovery check
Extended checksum check of bios
Unknown\unexpected interrupt
Initialise the chipset
Initialise the bridge
Initialise the CPU
Initialise system timer
Initialise system I/ O
Check force recovery boot
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PH440 NLX Motherboard User Guide September 1998
Code POST Routine Description
E6h
E7h
E8h
E9h
EAh
EBh
ECh
EDh
EEh
EFh
F0h
F1h
F2h
F3h
F4h
F5h
F6h
F7h
Checksum BIOS ROM
Go to BIOS
Initialise Multi Proc ess or
Set Huge Segment
Initialilze OEM special code
Initialise PIC and DMA
Initialise Memory type
Initialise Memory size
Shadow Boot Block
Sys tem memory test
Initialise interr upt vect ors
Initialise Run Time Clock
Initialise video
Initialise beeper
Initialise boot
Clear Huge segment
Boot to Mini DOS
Boot to Full DOS
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 37 OF 51
Page 38
PH440 NLX Motherboard User Guide September 1998
The following codes are produced during the BIOS recovery sequence.
Code POST Routine Description
14h
16h
17h
18h
E0h
E1h
E2h
E3h
E4h
E5h
E6h
E7h
E8h
E9h
EAh
EBh
ECh
EDh
EEh
EFh
88h
FFh
Read file
Erase sector
Program sector
Verify sector
Memory allocation error
File not found
Path not found
No handles available
Access denied
Invalid access code
Undefined file open error
Access denied on file read
Invalid handle
Undefined file read error
File close failure
Chip ID failure
Sector erase failure
Sector protect failure
Sector program failure
Sector verify error
Video not found
Incorrect parameters
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 38 OF 51
Page 39
PH440 NLX Motherboard User Guide September 1998
6 E LECTRI C AL
POWER REQUIREMENTS
The motherboard power requirements are heavily dependent on system configuration and the
software being used. The table below can be used as a guide to the likely power supply
requirements. They are measured using a 400MHz Intel Pentium II
modules and 8MB video memory running stress test software designed to yield worst case
results. T hey should not, however, b e regarded as maximum value s .
®
Processor, 3 memory
PCB
Supply +5V
standby
Voltage
Tolerance
Maximum
Current (in above
configuration)
Warning
Ensure that the system does no t overload the +5V standby output of the powe r supply –
permanent damage to the motherboard may result.
This motherboard requires a +5V standby supply to operate correctly. This is normally
provided by an NLX-compatible power supply via the riser.
The PCB i s a four-layer d esign measuring W9.0” x L11.2”. It is NLX compa t ible. The inner
power planes are arranged so that the ground plane is nearest the top component layer.
The PCB has a UL flammability rating of 94V-0.
±
5%
20mA 5A 3A 300mA 100mA 100mA
+5V +3.3V +12V -12V -5V
±
5%
±
3%
±
5%
±
5%
±
5%
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 39 OF 51
Page 40
PH440 NLX Motherboard User Guide September 1998
7 CONNECTOR ASSIGNMEN TS
Keyboard and Mouse (PS/2 Mini-DIN)
(Installation guide references F and G)
6
5
4213
Pin Signal Direction Description
1 CLK I/O Data clock
2VCC O +5V Power
3 GND - Signal ground
4 NC - No connect
5 DATA I/O Serial data
6 NC - No connect
Serial Port 1 and Serial Port 2 (9 way D-type)
(Installation guide references E and H)
51
6
10101
9
Pin Signal Direction Description
1 DCD I Data Carrier Detect
2 RXD I Receive Data
3 T XD O Transmit Data
4 DTR O Data Terminal Ready
5 GND I Signal ground
6 DSR I Data Set Ready
7 RTS O Request to Send
8 CTS I Clear to Send
9 RI I Ring Indicate
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 40 OF 51
Page 41
PH440 NLX Motherboard User Guide September 1998
Parallel Port (25 way D-type)
(Installation guide reference J)
13
25
1
14
Pin Standard mode ECP mode Direction
1 STB# STB#
2 DATA0 DATA0 I/O
3 DATA1 DATA1 I/O
4 DATA2 DATA2 I/O
5 DATA3 DATA3 I/O
6 DATA4 DATA4 I/O
7 DATA5 DATA5 I/O
8 DATA6 DATA6 I/O
9 DATA7 DATA7 I/O
10 ACK# ACK# I
11 BUSY BUSY I
12 PE PE I
13 SLCT SLCT I
14 AFD# AFD# O
15 ERR# ERR# I
16 INIT# INIT# O
17 SLIN# SLIN# O
18 GND GND -
19 GND GND -
20 GND GND -
21 GND GND -
22 GND GND -
23 GND GND -
24 GND GND -
25 GND GND -
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 41 OF 51
Page 42
PH440 NLX Motherboard User Guide September 1998
VGA (15 way high density D-type)
(Installation guide reference I)
5
1
10
15
11
6
Pin Signal Pin Signal
1 Red 9 +5V Power (fused)
2 Green 10 GND
3 Blue 11 No Connect
4 No Connect 12 Monitor ID 1
5 GND 13 HSYNC
6 Red Return 14 VSYNC
7 Green Return 15 Monitor ID 3
8Blue Return
USB Ports 0 and 1 (USB port 1 on the rear panel is an option)
(Installation guide reference D)
1
4
Port 1
Port 0
1
4
Pin Signal Direction Description
1VCC O +5V Power
2 DATA- I/O Differential Serial Data -
3 DATA+ I/O Differential Serial Data +
4 GND - Signal gro und
Line Input and Output (3.5mm stereo jack)
(Installation guide references A and C)
Pin Signal
Sleeve GND
Tip Left channel
Ring Right channel
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 42 OF 51
Page 43
PH440 NLX Motherboard User Guide September 1998
Microphone Input (3.5mm stereo jack)
(Installation guide reference D)
Pin Signal
Sleeve GND
Tip Mono input
Ring Electret bias voltage
Processor Fan (3 way header with locking ramp)
(Installation guide reference 3)
Pin Signal Direction Description
1 GND - Signal ground
2 +12V Power O DC fan drive voltage
3 FAN_TACH# I Tacho sense from fan
Internal CD audio (4 way ATAPI header)
(Installation guide reference 7)
Pin Signal Direction Description
1 LEFT I Left audio input
2 GND - Signal ground
3 GND - Signal ground
4 RIGHT I Right audio input
MIDI/Joystick (16 way dual row header)
(Installation guide reference 8)
Pin Signal Pin Signal
1 +5V Power 2 +5V Power
3JAB1 4JBB1
5JACX 6JBCX
7 GND 8 MIDI OUT
9 GND 10 JBCY
11 JACY 12 JBB2
13 JAB2 14 MIDI IN
15 +5V Power 16 Key
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 43 OF 51
Page 44
PH440 NLX Motherboard User Guide September 1998
VESA/AMCC Support (40 way dual row header)
(Installation guide reference 5)
Pin Signal Pin Signal
1 Digital GND 2 PIXEL DATA0
3 Digital GND 4 PIXEL DATA1
5 Digital GND 6 PIXEL DATA2
7 EVIDEO 8 PIXEL DATA3
9 ESYNC 10 PIXEL DATA4
11 EDCLK 12 PIXEL DATA5
13 SAD4 14 PIXEL DATA6
15 Digital GND 16 PIXEL DATA7
17 Digital GND 18 DCLK
19 Digital GND 20 SAD0
21 VFSENSE# 22 SAD1
23 I2C CLOCK 24 SAD2
25 Key 26 Digital GND
27 Key 28 Key
29 +5V Power 30 SAD3
31 RESET# 32 SAD7
33 SAD6 34 SAD5
35 I2C DATA 36 REV
37 Audio GND 38 +12V Power
39 Audio Right 40 Audio Left
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 44 OF 51
Page 45
PH440 NLX Motherboard User Guide September 1998
NLX Riser Connector (Gold fingers) PCI Segment
(Installation guide reference 9)
Pin Signal Terminator Pin Signal Terminator
A1 -12V B1 PC_SPKR_RT
A2 NC B2 +12V
A3 +12V B3 PC_SPKR_LFT
A4 NC B4 +12V
A5 3.3V B5 PCI_CLK0 MB (series)
A6 INTD# RISER B6 GND
A7 3.3V B7 PCI_CLK1 MB (series)
A8 INTA# RISER B8 SER_IRQ
A9 INTB# RISER B9 PCI_INT2#
A10 PCI_CLK2 MB (series) B1 0 3.3V
A11 +3.3V B11 PCI_CLK3
A12 PCI_RST# MB (series) B12 GND
A13 PCI_GNT0# R ISER B13 PCI_GNT3#
A14 PCI_CLK4 MB (series) B1 4 3.3V
A15 GND B15 PCI_GNT2 #
A16 PCI_GNT1# RISER B16 PCI_AD31 RISER (series)
A17 3.3V B17 PCI_REQ0#
A18 PCI_REQ2# RISER B18 GND
A19 PCI_REQ3# RISER B19 PCI_AD29 RISER (series)
A20 PCI_AD30 RISER (series) B20 PCI_AD28 RISER (series)
A21 GND B21 PCI_AD26 RISER (series)
A22 PCI_AD25 RISER (series) B22 3.3V
A23 PCI_REQ1# RISER B23 PCI_AD24 RISER (series)
A24 PCI_AD27 RISER (series) B24 PCI_CBE3#
A25 3.3V B25 PCI_AD22 RISER (series)
A26 PCI_AD23 RISER (series) B26 GND
A27 PCI_AD20 RISER (series) B27 PCI_AD21 RISER (series)
A28 PCI_AD18 RISER (series) B28 PCI_AD19 RISER (series)
A29 GND B29 PCI_AD16 RISER (series)
A30 PCI_AD17 RISER (series) B30 3.3V
A31 PCI_IRDY# B31 PCI_CBE2#
A32 PCI_DEVSEL# B32 PCI_FRAME#
A33 3.3V B33 PCI_TRDY#
A34 PCI_ST OP# B34 GND
A35 PCI_PER R# B 35 PC I_SDONE
A36 PCI_SERR# B36 PCI_LOCK#
A37 GND B37 PCI_SB0#
A38 PCI_CBE1# B38 3.3V
A39 PCI_AD13 RISER (series) B39 PCI_AD15 RISER (series)
A40 PCI_AD10 RISER (series) B40 PCI_PAR
A41 GND B41 PCI_AD14 RISER (series)
A42 PCI_CBE0# B42 GND
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 45 OF 51
Page 46
PH440 NLX Motherboard User Guide September 1998
NLX Riser Connector (Gold fingers) PCI Segment
(Installation guide reference 9)
Pin Signal Terminator Pin Signal Terminator
A43 PCI_AD0 RISER (series) B43 PCI_AD11 RISER (series)
A44 PCI_AD6 RISER (series) B44 PCI_AD12 RISER (series)
A45 3.3V B45 PCI_AD9 RISER (series)
A46 PCI_AD5 RISER (series) B46 3.3V
A47 PCI_AD1 RISER (series) B47 PCI_AD8 RISER (series)
A48 PCI_AD3 RISER (series) B48 PCI_AD7 RISER (series)
A49 GND B49 PCI_AD4 RISER (serie s)
A50 PCI_AD2 RISER (series) B50 GND
A51 +5V B51 PCI_PME# MB 10k
3V3SBY
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 46 OF 51
Page 47
PH440 NLX Motherboard User Guide September 1998
NLX Riser Connector (Gold fingers) ISA Segment
(Installation guide reference 9)
Pin Signal Terminator Pin Signal Terminator
A52 ISA_RSTDRV MB Series B52 +5V
A53 ISA_IOCHK# MB 4k7 +5V B53 ISA_ IR Q9 MB 10k +5V
A54 ISA_SD6 MB 10k +5V B54 ISA_DRQ2 MB 5K6 GND
A55 ISA_SD7 MB 10k +5V B55 ISA_SD3 MB 10k +5V
A56 ISA_SD4 MB 10k +5V B56 ISA_OWS# MB 1k +5V
A57 +5V B57 ISA_SD1 MB 10k +5V
A58 ISA_SD2 MB 10k +5V B58 ISA_AEN
A59 ISA_SD5 MB 10k +5V B59 ISA_IOCHRDY MB 1k +5V
A60 ISA_SD0 MB 10k +5V B60 ISA_SA18 MB 10k +5V
A61 ISA_SM EMW# MB 10k +5V B61 ISA_SMEMR# MB 10k +5V
A62 ISA_S A1 9 MB 10k +5V B 62 IS A_SA16 MB 10k +5V
A63 ISA_IO W# MB 10k +5V B63 ISA_IOR# MB 10k +5V
A64 ISA_S A1 7 MB 10k +5V B 64 ISA_DRQ3 MB 5k6 +5V
A65 GND B65 ISA_S A1 5 MB 10k +5V
A66 ISA_DACK3# B66 GND
A67 ISA_S A1 4 MB 10k +5V B 67 IS A_SA13 MB 10k +5V
A68 ISA_DACK1# B68 +5V
A69 ISA_DRQ1 MB 5k6 GND B69 ISA_REFRESH# MB 1k +5V
A70 ISA_S A1 2 MB 10k +5V B 70 IS A_SA11 MB 10k +5V
A71 I SA_SYSCLK MB series B71 ISA_SA10 MB 10k +5V
A72 ISA_SA9 MB 10k +5V B72 ISA_IRQ7 MB 10k +5V
A73 +5V B73 ISA_ IR Q6 MB 10k +5V
A74 ISA_IRQ 5 MB 10k +5V B74 ISA_SA8 MB 10k +5V
A75 ISA_SA7 MB 10k +5V B75 ISA_SA6 M B 10k +5V
A76 ISA_IRQ 3 MB 10k +5V B76 IA_DACK2#
A77 ISA_IRQ 4 MB 10k +5V B77 ISA_SA4 MB 10k +5V
A78 ISA_SA5 MB 10k +5V B78 GND
A79 ISA_TC B79 ISA_SA3 MB 10k +5V
A80 ISA_BALE MB 10k +5V B80 ISA_SA2 MB 10k +5V
A81 GND B81 ISA_S A1 MB 10k +5V
A82 CLK14_ISA MB series B82 ISA_SA0 MB 10k +5V
A83 ISA_IOCS16# MB 1k +5V B83 ISA_SBHE# MB 10k +5V
A84 ISA_MEMCS16#MB 1k +5V B84 ISA_LA23 MB 10k +5V
A85 ISA_IRQ11 MB 10k +5V B85 ISA_LA22 MB 10k +5V
A86 ISA_IRQ10 MB 10k +5V B86 ISA_LA21 MB 10k +5V
A87 ISA_IRQ15 MB 10k +5V B87 ISA_LA20 MB 10k +5V
A88 ISA_IRQ12 MB 10k +5V B88 ISA_LA19 MB 10k +5V
A89 GND B89 ISA_LA18 MB 10k +5V
A90 ISA_IRQ14 MB 10k +5V B90 ISA_LA17 MB 10k +5V
A91 ISA_DRQ0 MB 5k6 GND B91 ISA_DACK0#
A92 ISA_MEMR# MB 10k +5V B92 ISA_DACK5#
A93 ISA_ME MW# MB 10k +5 V B93 ISA_SD8 MB 10k +5V
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 47 OF 51
Page 48
PH440 NLX Motherboard User Guide September 1998
NLX Riser Connector (Gold fingers) ISA Segment
(Installation guide reference 9)
Pin Signal Terminator Pin Signal Terminator
A94 ISA_SD9 MB 10k +5V B94 ISA_DACK6#
A95 ISA_DRQ5 MB 5k6 GND B95 ISA_SD10 MB 10k +5V
A96 ISA_DRQ6 MB 5k6 GND B96 +5V
A97 +5V B97 ISA_SD1 1 MB 10k +5V
A98 ISA_SD12 MB 10k +5V B98 ISA_DR Q7 MB 5k6 GND
A99 ISA_DACK7# B99 ISA_SD13 MB 10k +5V
A100 ISA_SD14 MB 10k +5V B100 ISA_SD15 M B 10k +5V
A101 ISA_MASTER# MB 330R +5 V B101 GND
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 48 OF 51
Page 49
PH440 NLX Motherboard User Guide September 1998
NLX Riser Connector (Gold fingers) IDE and Floppy Disk Interfaces
(Installation
guide reference 9)
Pin Signal Terminator Pin Signal Terminator
A102 PIDE_D8 MB series 33R B102 GND
A103 PIDE_RESET# MB series 33R B103 PIDE_D7 MB series 33R
A104 PIDE_D9 MB series 33R B104 PIDE_D6 MB series 33R
A105 +5V B105 PIDE_D5 MB series 33R
A106 PIDE_D4 MB series 33R B106 PIDE_D11 MB series 33R
A107 PIDE_D10 MB series 33R B107 PIDE_D12 MB series 33R
A108 PIDE_D3 MB series 33R B108 GND
A109 PIDE_D13 MB series 33R B109 PIDE_D14 MB series 33R
A110 PIDE_D1 MB series 33R B110 PIDE_D2 MB series 33R
A111 GND B111 PIDE_D0 MB series 33R
A112 PIDE_IOW# MB series 33R B112 PIDE_D15 MB series 33R
A113 PIDE_DREQ MB series 82R B113 PIDE_IOR# MB series 33R
A114 PIDE_RDY MB series 82R B114 PCSEL 470R GND
A115 PIDE_DACK# MB series 33R B115 ISA_IRQ14 MB series 82R
A116 RSVD1 B116 +5V
A117 PIDE_DA2 MB series 33R B117 PIDE_DA1 MB series 33R
A118 PIDE_CS1# MB series 33R B118 PIDE_DA0 MB series 33R
A119 +5V B119 PIDE_CS3# MB series 33R
A120 NC (PDASP#) B120 SIDE_D8 MB series 33R
A121 SIDE_RESET# MB series 33R B121 SIDE_D7 MB 33R series
A122 SIDE_D9 MB series 33R B122 GND
A123 SIDE_D6 MB series 33R B123 SIDE_D10 MB series 33R
A124 SIDE_D5 MB series 33R B124 +5V
A125 SIDE_D11 MB series 33R B125 SIDE_D4 MB series 33R
A126 SIDE_D12 MB series 33R B126 SIDE_D3 MB series 33R
A127 GND B127 SIDE_D13 MB series 33R
A128 SIDE_D2 MB series 33R B128 SIDE_D14 MB series 33R
A129 SIDE_D15 MB series 33R B129 SIDE_D1 MB series 33R
A130 SIDE_IOW# MB series 33R B130 SIDE_D0 MB series 33R
A131 SIDE_DREQ MB series 82R B131 SIDE_IOR# MB series 33R
A132 SIDE_RDY MB series 82R B132 SCSEL 470R GND
A133 GND B133 ISA_IRQ15 MB series 82R
A134 SIDE_DACK# MB series 33R B134 SIDE_DA1 MB series 33R
A135 NC B135 SIDE_DA2 MB series 33R
A136 SIDE_DA0 MB series 33R B136 SIDE_CS3# MB series 33R
A137 SIDE_CS1# MB series 33R B137 NC (SDASP#)
A138 NC (DRV2#) B138 GND
A139 +5V B139 FD_DRATE0
A140 NC B140 FD_DSEL1#
A141 FD_DENSEL B141 FD_DSEL0#
A142 FD_MOT0# B142 FD_DIR#
A143 FD_INDEX# B143 NC (MSEN1)
A144 FD_MOT1# MB 10k B144 GND
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 49 OF 51
Page 50
PH440 NLX Motherboard User Guide September 1998
NLX Riser Connector (Gold fingers) IDE and Floppy Disk Interfaces
(Installation
guide reference 9)
Pin Signal Terminator Pin Signal Terminator
A145 GND B145 FD_WDATA#
A146 FD_WGATE# B146 FD_TRK0#
A147 FD_STEP# B147 NC (MSEN0)
A148 FD_WPRT# B148 FD_RDATA#
A149 FD_HDSEL# B149 FD_DCHG#
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 50 OF 51
Page 51
PH440 NLX Motherboard User Guide September 1998
NLX Riser Connector (Gold fingers) Miscellaneous
(Installation guide reference 9)
Pin Signal Terminator Pin Signal Terminator
A150 SMBUS_DATA MB 2K7 +3V3 B150 GND
A151 SMBUS_CLK MB 2K7 +3V3 B151 NC (IRSL0)
A152 FANTACH1 MB 10K +12V B152 NC (IRSL1)
A153 FANTACH2 MB 10K +12V B153 NC (IRSL2)
A154 FANTACH3 B154 IO_IRTX
A155 IO_FANCTL B155 IO_IRRX MB 10K +5V
A156 +5V B156 NC (FPSLEEP)
A157 NLX_USBP1- B157 FPRST#
A158 NLX_USBP1+ B158 GND
A159 PIIX_SBOC1# B159 STANBY_LED#
A160 NC (USB2 N) B160 PSU_PWRGOOD
A161 NC (USB2 P ) B161 COR_SBYBTN#
A162 NC (USB2OC#) B162 PSU_ON#
A163 GND B163 LAN_WAKE
A164 VBATNLX B164 NC (LANLED)
A165 INTRUDE# MB 1M
(VBAT)
A166 MSG_LED# B166 NC (1394PWR)
A167 NC (1394GND) B167 NC (RSVD7)
A168 NC (RSVD4) B168 NC (RSVD6)
A169 5VSBY B169 NC (RSVD5)
A170 +3V3 (SENSE) B170 NC (-5V)
B165 NC (MDMWA KE#)
NLX Supplemental Connector
(Installation guide reference 9)
A170 +3V3 (SENSE) B170
X1
X2 AUDIO GND Y2 AGND
X3 MIC IN Y3 AUDIO 5V
X4 HEADPHONE OUT LEFT Y4 HEADPHONE OUT RIGHT
X5 HEADPHONE SWITCH Y5 MICROPHONE SWITCH
X6 VOL_DN# Y6 VOL_UP#
X7 GND Y7 NC
X8 NC Y8 NC
X9 NC Y9 GND
X10 NC Y10 NC
X11 NC Y11 NC
X12 AGND Y12 NC
X13 MODEM MIC Y13 MODEM SPEAKER
CD IN LEFT Y1 CD IN RIGHT
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 51 OF 51
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