Intel JN440BX User Manual

JN440BX Motherboard

Technical Product Specification

April, 1998

Order Number

The JN440BX motherboard may contain design defects or errors known as errata. Characterized errata that may cause the JN440BX motherboard’s behavior to deviate from published specifications are documented in the JN440BX Motherboard Specification Update.

699414-001

Revision History

Revision Revision History Date

-001 First released version April 1998

This product specification applies only to standard JN440BX motherboards with BIOS identifier 4J4NB0X1

Changes to this specification will be published in the JN440BX Motherboard Specification Update before being incorporated into a revision of this document.

Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel's Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not intended for use in medical, life saving, or life sustaining applications.

Intel retains the right to make changes to specifications and product descriptions at any time, without notice. The JN440BX motherboard may contain design defects or errors known as errata which may cause the product to deviate

from published specifications. Current characterized errata are available on request. Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be

obtained from:

Intel Corporation P.O. Box 5937 Denver, CO 80217-9808

or call in North America 1-800-548-4725, Europe 44-0-1793-431-155, France 44-0-1793-421-777, Germany 44-0-1793-421-333, other Countries 708-296-9333.

†

Brand, name or trademark owned by another company.



1 Motherboard Description

1.1 Overview .....................................................................................................................7

1.2 Motherboard Layout .................................................................................................... 9

1.3 Form Factor................................................................................................................11

1.4 I/O Shield....................................................................................................................12

1.5 Microprocessor..........................................................................................................13

1.5.1 Microprocessor Packaging...........................................................................13

1.5.2 Second-Level Cache....................................................................................13

1.5.3 Microprocessor Upgrades............................................................................13

1.6 Main Memory..............................................................................................................14

1.6.1 SDRAM........................................................................................................14

1.6.2 ECC Memory................................................................................................15

1.7 Chipset.......................................................................................................................16

1.7.1 Intel

1.7.2 Intel

1.7.3 Accelerated Graphics Port (A.G.P.)..............................................................18

1.7.4 Universal Serial Bus (USB) ..........................................................................18

1.7.5 IDE Support .................................................................................................19

1.7.6 Real-Time Clock, CMOS SRAM, and Battery...............................................19

1.8 I/O Controller..............................................................................................................20

1.8.1 Keyboard and Mouse Interface ....................................................................20

1.8.2 Parallel Port..................................................................................................20

1.8.3 Diskette Drive Controller ..............................................................................21

1.8.4 Serial Ports ..................................................................................................21

1.8.5 Optional Infrared ..........................................................................................21

1.9 Audio Subsystem........................................................................................................21

1.9.1 Crystal Semiconductor CS4235 Audio Codec..............................................21

1.9.2 Audio Connectors.........................................................................................22

1.9.3 Audio Drivers and Utilities ............................................................................22

1.10 Graphics Subsystem ..................................................................................................23

1.10.1 ATI Rage Pro Turbo 2X Graphics Controller ................................................23

1.11 Hardware Monitor.......................................................................................................24

1.12 Onboard Networking...................................................................................................24

1.12.1 Intel

1.12.2 Alert On LAN Component.............................................................................25

1.12.3 LAN Software...............................................................................................25

1.13 Motherboard Connectors............................................................................................26

1.14 Back Panel Connectors..............................................................................................28

1.15 Configuration Jumper.................................................................................................32

1.15.1 Normal Mode................................................................................................33

1.15.2 Configuration Mode......................................................................................33

1.15.3 Recovery Mode............................................................................................33

1.16 NLX Card Edge Connector.........................................................................................34

82443BX PCI/A.G.P. Controller (PAC) ...............................................16

82371EB PCI ISA IDE Xcelerator (PIIX4E).........................................17

82558 LAN Controller.........................................................................24

iii

Contents

1.17 Reliability....................................................................................................................41

1.18 Environmental ............................................................................................................42

1.19 Power Consumption...................................................................................................43

1.20 Regulatory Compliance ..............................................................................................44

1.20.1 Product Certification Markings......................................................................44

2 Motherboard Resources

2.1 Memory Map ..............................................................................................................45

2.2 DMA Channels ...........................................................................................................45

2.3 I/O Map ......................................................................................................................46

2.4 PCI Configuration Space Map ....................................................................................48

2.5 Interrupts....................................................................................................................48

2.6 PCI Interrupt Routing Map..........................................................................................49

3 Overview of BIOS Features

3.1 BIOS Upgrades ..........................................................................................................51

3.2 4 Mbit E28F004S5 Symmetrical Flash Memory..........................................................51

3.3 Plug and Play: PCI Autoconfiguration........................................................................53

3.4 PCI IDE Support.........................................................................................................53

3.5 ISA Plug and Play.......................................................................................................54

3.6 ISA Legacy Devices ...................................................................................................54

3.7 Desktop Management Interface (DMI)........................................................................54

3.8 Advanced Power Management (APM)........................................................................55

3.9 Advanced Configuration and Power Interface (ACPI).................................................55

3.9.1 System States and Power States.................................................................56

3.9.2 Wake Up Devices and Events......................................................................57

3.9.3 Plug and Play...............................................................................................57

3.9.4 BIOS Support...............................................................................................57

3.10 Language Support......................................................................................................57

3.11 Boot Options...............................................................................................................58

3.12 OEM Logo or Scan Area ............................................................................................58

3.13 USB Legacy Support..................................................................................................58

3.14 BIOS Setup Access....................................................................................................59

3.15 Recovering BIOS Data ...............................................................................................59

4 BIOS Setup Program

4.1 Maintenance Menu.....................................................................................................62

4.2 Main Menu..................................................................................................................62

4.3 Advanced Menu..........................................................................................................63

4.3.1 Peripheral Configuration Submenu...............................................................64

4.3.2 IDE Configuration.........................................................................................65

4.3.3 IDE Configuration Submenus.......................................................................66

4.3.4 Floppy Options.............................................................................................67

4.3.5 DMI Event Logging.......................................................................................67

4.3.6 Video Configuration Submenu......................................................................67

4.3.7 Resource Configuration Submenu................................................................68

4.4 Security Menu ............................................................................................................68

4.5 Power Menu...............................................................................................................69

4.6 Boot Menu..................................................................................................................69

4.6.1 Hard Drive Submenu....................................................................................70

4.6.2 Removable Devices Submenu.....................................................................71

4.7 Exit Menu ...................................................................................................................71

5 Error Messages and Beep Codes

5.1 BIOS Error Messages.................................................................................................73

5.2 Port 80h POST Codes................................................................................................74

5.3 BIOS Beep Codes......................................................................................................79

6 Specifications and Customer Support

6.1 Online Support ...........................................................................................................81

6.2 Specifications .............................................................................................................81

Figures

1. Motherboard Block Diagram........................................................................................ 9

2. Motherboard Components..........................................................................................10

3. Motherboard Dimensions............................................................................................11

4. Back Panel I/O Shield Dimensions.............................................................................12

5. Motherboard Connectors............................................................................................26

6. Back Panel I/O Connectors ........................................................................................28

7. Configuration Jumper Block........................................................................................32

8. Memory Map of the Flash Device...............................................................................52

Contents

Tables

1. CD-ROM Connector (J8M1).......................................................................................26

2. Processor Fan (J2A1).................................................................................................27

3. Accelerated Graphics Port (J1K1) ..............................................................................27

4. Line-In Connector (1/8” Stereo jack) (J9P1) ..............................................................29

5. Line-Out Connector (1/8” Stereo jack) (J8P1)............................................................29

6. Microphone Connector (1/8” Stereo jack) (J8P2)......................................................29

7. RJ-45 LAN Connector (J7P2).....................................................................................29

8. USB Connector (J6P1)...............................................................................................30

9. Serial Port A and B Connectors (J3P1 and J5P1)......................................................30

10. Keyboard/Mouse Connectors (J4P1).........................................................................30

11. Parallel Port Connector (J2P1)..................................................................................31

12. VGA Connector (J1P1)...............................................................................................31

13. Configuration Jumper Settings (J5G1)........................................................................32

14. PCI Segment, Riser Interconnect ...............................................................................34

15. ISA Segment, Riser Interconnect ...............................................................................36

16. IDE, Floppy, and Front Panel Section, Riser Interconnect..........................................37

17. Signals, NLX Riser with Supplemental Connector ......................................................40

18. Motherboard Environmental Specifications.................................................................42

19. DC Voltage.................................................................................................................43

20. Power Usage..............................................................................................................43

21. Processor Fan DC Power Requirements (J2A1).........................................................43

22. Safety Regulations .....................................................................................................44

23. EMC Regulations........................................................................................................44

Contents

24. System Memory Map..................................................................................................45

25. DMA Channels ...........................................................................................................45

26. I/O Map ......................................................................................................................46

27. PCI Configuration Space Map....................................................................................48

28. Interrupts....................................................................................................................48

29. PCI Interrupt Routing Map..........................................................................................49

30. Flash Memory Organization........................................................................................52

31. Recommendations for Configuring an ATAPI Device..................................................53

32. Effects of Pressing the Power Switch.........................................................................55

33. Power States and Targeted System Power................................................................56

34. Wake Up Devices and Events ....................................................................................57

35. Setup Menu Bar .........................................................................................................61

36. Setup Function Keys ..................................................................................................61

37. Maintenance Menu.....................................................................................................62

38. Main Menu..................................................................................................................62

39. Advanced Menu..........................................................................................................63

40. Peripheral Configuration Submenu.............................................................................64

41. IDE Device Configuration ...........................................................................................65

42. IDE Configuration Submenus .....................................................................................66

43. Default Values By IDE Device Type ...........................................................................66

44. Floppy Options ...........................................................................................................67

45. DMI Event Logging Submenu.....................................................................................67

46. Video Configuration Submenu....................................................................................67

47. Resource Configuration Submenu..............................................................................68

48. Security Menu ............................................................................................................68

49. Power Menu...............................................................................................................69

50. Boot Menu..................................................................................................................69

51. Hard Drive Submenu..................................................................................................70

52. Removable Devices Submenu....................................................................................71

53. Exit Menu ...................................................................................................................71

54. BIOS Error Messages.................................................................................................73

55. Port 80h Codes ..........................................................................................................74

56. Beep Codes................................................................................................................79

57. Specifications .............................................................................................................81

1 Motherboard Description

1.1 Overview

The JN440BX motherboard is a versatile platform that offers a wide variety of features. Some of the options, however, are implemented – at least in part – on the riser. Throughout this manual,

‡

symbol is used to indicate such an option. Because there is no standard riser, no detailed

the description of an implementation can be given. See Section 6.1 to obtain the reference design for the NLX riser.

Microprocessor

Single Pentium

66 MHz and 100 MHz host bus speeds

Integrated 512 KB or 1 MB of second level cache

Slot 1 connector

NOTE

✏

Pentium II processors with 100 MHz front-side bus should be paired only with 100 MHz SDRAM. Processors with 66 MHz front side bus can be paired with either 66 MHz or 100 MHz SDRAM.

II processor

The motherboard features:

NLX v1.2 form factor

Minimal jumper design

Main Memory

Three 168-pin DIMM sockets

Support for up to 384 MB of synchronous DRAM (SDRAM)

Support for 66 MHz and 100 MHz SDRAM

Support for ECC and non-ECC memory

Chipset and PCI/IDE Interface

x x x x x x

82440BX AGPset PCI/A.G.P. Controller (PAC)

Intel Integrated PCI bus mastering controller using PIIX4E Dual channel EIDE interface Real-time clock PCI Slots Automatic detection of Host Bus speed

‡

JN440BX Motherboard Technical Product Specification

I/O Features

SMC FDC37C777 I/O controller

Single diskette drive interface

Integrates standard I/O functions: one multi-mode parallel port, two FIFO serial ports, and keyboard and mouse controller

Support for one Universal Serial Bus (USB) interface on the motherboard and another on the

‡

riser

Support for consumer infrared in place of COM2

Audio Subsystem

Crystal Audio 4235 controller

†

Sound Blaster

Full-duplex audio functionality providing simultaneous record and playback under Windows

Back panel connectors (3.5 mm mini jacks)



Line-in



Line-out



Mic-in

BIOS setup-based software enable/disable/configure

Telephony audio support

PC ’97 compliant

Circuit to support an external speaker

Support for the auxiliary Audio NLX connector

compatible

‡

†

Graphics Subsystem

†

ATI RAGE

PRO TURBO† integrated 64-bit A.G.P. graphics accelerator with support for 3D

and motion video



4 MB of 100 MHz SGRAM



2D acceleration in 8/16/24/32 bpp modes



3D acceleration with compressed texture modes: YUV 4:2:2, CLUT 4 (C14), and CLUT 8 (C18)

A.G.P. connector support for 66 MHz and 133 MHz fully pipelined operation and sideband support

Local Area Network (LAN) Subsystem

10/100 Mbit/sec LAN hardware

Remote wakeup controller

Other features

Plug and Play compatible

Support for Advanced Power Management (APM)

Advanced Configuration and Power Management Interface (ACPI) ready

Support for Wired for Management (WfM) 1.1

Support for Management Level 4.0

1.2 Motherboard Layout

Figure 1 is a block diagram showing the relationship among the major components.

Motherboard Description

SDRAM DIMM(3)

Pri. IDE

Sec. IDE

USB Port 1

USB Port 0

Card Edge (for Riser)

Back Panel

Clock

Generator

Pentium® II

Processor

82443BX

82371 EB

PIIX4E

PAC

A.G.P. Bus

SM Bus

PCI Bus

A.G.P.

Connector

A.G.P.

Controller

Mic

Line Out

Back Panel

Line In

Monitor

Hardware

Crystal Semi

Conductor

4235

Audio

Controller

Back Panel

82558 LAN

Controller

Alert on

LAN

Consumer IR or IrDA

Back Panel

ISA Bus

Floppy

Serial Port B Serial Port A

Parallel Port

Super I/O

SMC

FDC37C777

Mouse

Keyboard

Back Panel

Figure 1. Motherboard Block Diagram

4 Mbit Symmetrical

Flash Memory

OM07087

JN440BX Motherboard Technical Product Specification

Figure 2 shows the location of the major components on the motherboard.

FG DE

A Back panel connectors F Slot 1 connector B CD-ROM header G Fan connector C Configuration jumper H DIMM sockets D Battery I A.G.P. connector E Piezoelectric speaker

Figure 2. Motherboard Components

OM07088

Motherboard Description

1.3 Form Factor

The motherboard is designed to fit into a standard NLX form factor chassis. Figure 3 illustrates the mechanical form factor for the motherboard. Location of the I/O connectors, riser slot, and mounting holes are in strict compliance with the NLX specification (see Section 6.2). Dimensions are given in inches.

0.10

0.0

0.20

0.50

0.327

0.15

0.349

0.60

8.70

0.260

8.80

4.207.60

Figure 3. Motherboard Dimensions

5.159

6.575

12.80

13.00

0.20

OM07089

JN440BX Motherboard Technical Product Specification

1.4 I/O Shield

The back panel I/O shield for the JN440BX motherboard must meet specific dimensional and material requirements. Systems based on this motherboard need the back panel I/O shield in order to pass emission certification testing. Figure 4 shows the critical dimensions of the I/O shield, and indicates the position of each cutout. Dimensions are given in inches.

7.458

3.1461.6530.507

1.080

0.00 9.00

2.479

5.728

8.1826.7504.706

NLX Motherboard Shield

Figure 4. Back Panel I/O Shield Dimensions

OM07100

Motherboard Description

1.5 Microprocessor

The motherboard supports a single Pentium II processor. The processor’s VID pins automatically program the motherboard’s voltage regulator to the required processor voltage. In addition, the host bus speeds (66 MHz and 100 MHz) is automatically selected. The motherboard supports all current processor speeds, voltages, and bus frequencies.

1.5.1 Microprocessor Packaging

The processor is packaged in a Single Edge Contact (S.E.C.) cartridge. The S.E.C. cartridge includes the processor core, the second-level cache, a thermal plate, and a back cover.

The processor connects to the motherboard through the Slot 1 processor connector, a 242-pin edge connector. When the processor is mounted in Slot 1, it is secured by a retention mechanism attached to the motherboard. The processor’s heatsink is stabilized by a heatsink support that is attached to the motherboard.

1.5.2 Second-Level Cache

The second-level cache is located on the substrate of the S.E.C. cartridge. The cache includes pipelined burst synchronous static RAM (PBSRAM) and tag RAM. There can be two or four PBSRAM components totaling 512 KB or 1024 KB in size. All supported onboard memory can be cached.

1.5.3 Microprocessor Upgrades

The motherboard can be upgraded with Pentium II processors that run at higher processor speeds. After upgrading the processor, use the BIOS configuration mode to set the proper speed for the processor. See Section 1.15.2 for information about configuration mode.

JN440BX Motherboard Technical Product Specification

1.6 Main Memory

The motherboard has three, dual inline memory module (DIMM) sockets. Minimum memory size is 16 MB; maximum memory size is 384 MB. The BIOS automatically detects memory type, size, and speed.

The motherboard supports the following memory features:

168-pin DIMMs with gold-plated contacts

66 and 100 MHz (matching Host Bus speed) unbuffered SDRAM only

Non-ECC (64-bit) and ECC (72-bit) memory

3.3 V memory only

Single- or double-sided DIMMs in the following sizes:

DIMM Size Non-ECC Configuration ECC Configuration

16 MB 2 Mbit x 64 2 Mbit x 72 32 MB 4 Mbit x 64 4 Mbit x 72 64 MB 8 Mbit x 64 8 Mbit x 72 128 MB 16 Mbit x 64 16 Mbit x 72

Memory can be installed in one, two, or three sockets. Memory size can vary between sockets.

1.6.1 SDRAM

Synchronous DRAM (SDRAM) improves memory performance through memory access that is synchronous with the memory clock. This simplifies the timing design and increases memory speed because all timing is dependent on the number of memory clock cycles.

NOTE

✏

All memory components and DIMMs used with the JN440BX motherboard must comply with the PC SDRAM Specifications. These include: the PC SDRAM Specification (memory component specific), the PC unbuffered SDRAM Specifications, and the PC Serial Presence Detect Specification. Customers can access these document through the Internet at:

http://www.intel.com/design/pcisets/memory

See Section 6.2 for information about these specifications.

Motherboard Description

1.6.2 ECC Memory

Error checking and correcting (ECC) memory detects multiple-bit errors and corrects single-bit errors. When ECC memory is installed, the BIOS supports both ECC and non-ECC mode. ECC mode is enabled in the Setup program. The BIOS automatically detects if ECC memory is installed and provides the Setup option for selecting ECC mode. If non-ECC memory is installed, the Setup option for ECC mode does not appear.

The following table describes the effect of using Setup to put each memory type in each supported mode. Whenever ECC mode is selected in Setup, some performance loss occurs.

Memory Error Detection Mode Established in Setup Program ECC Disabled ECC Enabled

Non-ECC DIMM No error detection N/A ECC DIMM No error detection Single-bit error correction, multiple-bit

error detection

JN440BX Motherboard Technical Product Specification

1.7 Chipset

The Intel 440BX AGPset includes a Host-PCI bridge integrated with both an optimized DRAM controller and an Accelerated Graphics Port (A.G.P.) interface. The I/O subsystem of the 440BX is based on the PIIX4E, which is a highly integrated PCI-ISA/IDE Accelerator Bridge. This

chipset consists of the Intel PCI/ISA IDE Xccelerator (PIIX4E) bridge chip.

1.7.1 Intel® 82443BX PCI/A.G.P. Controller (PAC)

The PAC provides bus-control signals, address paths, and data paths for transfers between the processor’s host bus, PCI bus, the A.G.P., and main memory. The PAC features:

Processor interface control



Support for processor host bus frequencies of 100 MHz or 66 MHz



32-bit addressing



Desktop Optimized GTL+ compliant host bus interface

Integrated DRAM controller, with support for:



+3.3 V only DIMM DRAM configurations



Up to three double sided DIMMs



Synchronous 100-MHz or 66-MHz SDRAM



DIMM serial presence detect via SMBus interface



16- and 64-Mbit devices with 2 K, 4 K, and 8 K page sizes

4, x 8, x 16, and x 32 DRAM widths



SDRAM 64-bit data interface with ECC support



Symmetrical and asymmetrical DRAM addressing

A.G.P. interface



Complies with the A.G.P. specification (see Section 6.2 for specification information)



Support for +3.3 V A.G.P. 66/133 devices



Synchronous coupling to the host-bus frequency

PCI bus interface



Complies with the PCI specification, +5 V 33 MHz interface (see Section 6.2 for specification information)



Asynchronous coupling to the host-bus frequency



PCI parity generation support



Data streaming support from PCI-to-DRAM



Support for four PCI bus masters in addition to the host and PCI-to-ISA I/O bridge



Support for concurrent host, A.G.P., and PCI transactions to main memory

82443BX PCI/A.G.P. controller (PAC) and the Intel® 82371EB

Data buffering



DRAM write buffer with read-around-write capability



Dedicated host-to-DRAM, PCI0-to-DRAM, and PCI1/A.G.P.-to-DRAM read buffers



A.G.P. dedicated inbound/outbound FIFOs (133/66 MHz), used for temporary data storage

Power management functions



Support for system suspend/resume (DRAM and power-on suspend)



Compliant with ACPI power management

SMBus support for desktop management functions

Support for system management mode (SMM)

1.7.2 Intel® 82371EB PCI ISA IDE Xcelerator (PIIX4E)

The PIIX4E is a multifunction PCI device implementing the PCI-to-ISA bridge, PCI IDE functionality, Universal Serial Bus (USB) host/hub functionality, and enhanced power management. The PIIX4E features:

Multifunction PCI-to-ISA bridge



Support for the PCI bus at 33 MHz



Complies with the PCI specification (see Section 6.2 for specification information)



Full ISA bus support

USB controller



Two USB ports (see Section 6.2 for specification information)



Support for legacy keyboard and mouse



Support for UHCI interface

Integrated dual-channel enhanced IDE interface



Support for up to four IDE devices



PIO Mode 4 transfers at up to 16 MB/sec



Support for Ultra DMA/33 synchronous DMA mode transfers up to 33 MB/sec



Bus master mode with an 8 x 32-bit buffer for bus master PCI IDE burst transfers

Enhanced DMA controller



Two 8237-based DMA controllers



Support for PCI DMA with three PC/PCI channels and distributed DMA protocols



Fast type-F DMA for reduced PCI bus usage

Interrupt controller based on 82C59



Support for 15 interrupts



Programmable for edge/level sensitivity

Power management logic



Sleep/resume logic

†



Support for wake on modem and Wake on LAN



Support for ACPI (see Section 6.2 for specification information)

Real-Time Clock



256-byte battery-backed CMOS SRAM



Includes date alarm

16-bit counters/timers based on 82C54

technology

Motherboard Description

JN440BX Motherboard Technical Product Specification

1.7.3 Accelerated Graphics Port (A.G.P.)

The Accelerated Graphics Port (A.G.P.) is a high-performance interconnect for graphic-intensive applications, such as 3D applications. A.G.P. is independent of the PCI bus and is intended for exclusive use with graphical-display devices. A.G.P. provides these performance features:

Pipelined-memory read and write operations that hide memory access latency

Demultiplexing of address and data on the bus for near 100 percent bus efficiency

AC timing for 133 MHz data transfer rates, allowing data throughput of 500 MB/sec

A.G.P. complies with the 66 MHz PCI specification. See Section 6.2 for information about the A.G.P. and PCI specifications.

NOTE

✏

Only half-length NLX A.G.P. cards are supported.

1.7.4 Universal Serial Bus (USB)

The motherboard can support two‡ USB ports; however, it is shipped with only one port installed. The second port must be supported through the NLX riser. If you need to connect more than one USB device, you can connect an external hub to the USB port. The motherboard fully supports the universal host controller interface (UHCI) and uses UHCI-compatible software drivers. See Section 6.2 for information about the USB specification. USB features include:

Self-identifying peripherals that can be plugged in while the computer is running

Automatic mapping of function to driver and configuration

Supports isochronous and asynchronous transfer types over the same set of wires

Bandwidth and low latencies appropriate for telephony, audio, and other applications

Error-handling and fault-recovery mechanisms built into the protocol

NOTE

✏

Computer systems that have an unshielded cable attached to a USB port may not meet FCC Class B or other regulatory EMI requirements, even if no device or a low-speed USB device is attached to the cable. Use shielded cable that meets the requirements for full-speed devices.

Motherboard Description

1.7.5 IDE Support

The motherboard has two independent bus-mastering capable PCI IDE interfaces. These interfaces support PIO Mode 3, PIO Mode 4, ATAPI devices (such as CD-ROM), and Ultra DMA/33 synchronous-DMA mode transfers. The BIOS supports logical block addressing (LBA) and extended cylinder head sector (ECHS) translation modes. The BIOS automatically detects the IDE device transfer rate.

The motherboard also supports laser servo (LS-120) drives. LS-120 technology allows the user to perform read/write operations to LS-120 (120 MB) and conventional 1.44 MB and 720 KB diskettes. LS-120 drives are ATAPI-compatible and connect to the motherboard's IDE interface.

†

Some versions of Windows 95 and Windows NT a bootable device in both 120 MB and 1.44 MB mode.

Connection of an LS-120 drive and a standard 3.5-inch diskette drive is allowed. The LS-120 drive can be configured as a boot device if selected in the Setup program.

Bus master IDE drivers are available from Intel at the following web location: http://developer.intel.com/design/pcisets/busmastr/

operating systems recognize the LS-120 drive as

1.7.6 Real-Time Clock, CMOS SRAM, and Battery

The real-time clock is compatible with DS1287 and MC146818 components. The clock provides a time-of-day clock and a multicentury calendar with alarm features and century rollover. The realtime clock supports 256 bytes of battery-backed SRAM in two banks that are reserved for BIOS use.

The time, date, and SRAM values can be specified in the Setup program. The SRAM values can be returned to their defaults by using the Setup program.

An external coin-cell battery powers the real-time clock and SRAM. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the 5 V standby current from the power supply extends the life of the battery. The clock is accurate to r 13 minutes/year at 25 ºC with 5 V applied.

NOTE

✏

The recommended method of accessing the date in systems with Intel motherboards is indirectly from the Real Time Clock (RTC) via the BIOS. The BIOS on Intel motherboards and baseboards contains a century checking and maintenance feature that checks the least two significant digits of the year stored in the RTC during each BIOS request (INT 1Ah) to read the date and, if less than 80 (i.e., 1980 is the first year supported by the PC), updates the century byte to 20. This feature enables operating systems and applications using the BIOS date/time services to reliably manipulate the year as a four-digit value.

For more information on proper date access in systems with Intel motherboards please see

http://support.intel.com/procs/support/year2000/status/motherboard paper.htm

JN440BX Motherboard Technical Product Specification

1.8 I/O Controller

The motherboard uses the SMC FDC37C777 I/O controller which features:

5 Volt operation

ISA Plug-and-Play compatible register set

Two serial ports or one serial port and one infrared port

Single diskette drive interface

FIFO support on both serial and diskette interfaces

One parallel port with ECP and EPP support

†

x x

The Setup program provides configuration options for the I/O controller.

style mouse and keyboard interfaces

PS/2 Intelligent auto power management, including:



Shadowed write-only registers for ACPI compliance



Programmable wake-up event interface

1.8.1 Keyboard and Mouse Interface

‡

PS/2 keyboard and mouse connectors are located on the back panel of the motherboard. The +5 V

†

lines to these connectors are protected with a PolySwitch reestablishes the connection after an over-current condition is removed. While this device eliminates the possibility of having to replace a fuse, power to the computer should be turned off before connecting or disconnecting a keyboard or mouse.

NOTE

✏

You can plug a mouse or keyboard into either connector.

The keyboard controller contains code which provides the traditional keyboard and mouse control functions, and also supports Power On/Reset password protection. A Power On/Reset password can be specified in the Setup program.

The controller supports the <Ctrl><Alt><Del> key sequence to reset the computer’s software by jumping to the beginning of the BIOS code and running the Power-On Self Test (POST).

circuit that, like a self-healing fuse,

1.8.2 Parallel Port

The connector for the multimode bi-directional parallel port is a 25-pin D-Sub connector located on the back panel of the motherboard. In the Setup program, there are four options for parallel port operation:

Compatible (standard mode)

Bi-directional (PS/2 compatible)

Bi-directional Enhanced Parallel Port (EPP). A driver from the peripheral manufacturer is required for operation. See Section 6.2 for EPP compatibility

Bi-directional high-speed Extended Capabilities Port (ECP)

Motherboard Description

1.8.3 Diskette Drive Controller

The I/O controller is software compatible with the 82077 diskette drive controller. The diskette drive connector is located on the riser card. In the Setup program, the interface can be configured for the following drive capacities and sizes:

1.2 MB, 5.25-inch

1.2 MB, 3.5-inch (Mode 3 diskette support, driver required)

1.44 MB, 3.5-inch

2.88 MB, 3.5-inch

1.8.4 Serial Ports

The motherboard has two 9-pin D-Sub serial port connectors located on the back panel. The NS16C550-compatible UARTs allow data transfers at speeds up to 115.2 Kbits/sec using BIOS support.

1.8.5 Optional Infrared

There is no infrared header on the motherboard; however, the edge connector does accommodate

†

infrared signals from the riser. If an IrDA Peripheral Configuration Submenu to change the mode for Serial Port B from COM2 to infrared applications. You will no longer be able to use Serial Port B.

connector is available on the riser, use the BIOS

1.9 Audio Subsystem

The audio subsystem consists of the following:

Crystal Semiconductor CS4235 audio codec

Back panel and onboard audio connectors

1.9.1 Crystal Semiconductor CS4235 Audio Codec

The CS4235 audio codec’s features include:

†

Compatibility with Sound Blaster, Sound Blaster Pro

MPU-401 compatible MIDI and joystick interfaces

Advanced MPC3-compliant input and output mixer

, and Windows Sound System

JN440BX Motherboard Technical Product Specification

1.9.2 Audio Connectors

The audio connectors include the following:

Back panel connectors: stereo line-level output (Line-out), stereo line-level input (Line-in), and Mic-in

CD-ROM audio header (Creative Labs style)

CAUTION

The LINE-OUT connector, following convention, is designed to power headphones or amplified speakers ONLY. Do not connect passive (non-amplified) speakers to this output, as poor audio quality and/or damage to the motherboard may occur.

1.9.3 Audio Drivers and Utilities

Audio software and utilities are available from Intel’s World Wide Web site (see Section 6.1). Audio driver support is provided for Microsoft Windows 3.1, Microsoft Windows 95, and Microsoft Windows NT operating systems.

Motherboard Description

1.10 Graphics Subsystem

The graphics subsystem features the ATI Rage† Pro Turbo 2X graphics controller. See Intel’s World Wide Web site (see Section 6.1) for graphics drivers.

1.10.1 ATI Rage Pro Turbo 2X Graphics Controller

The ATI Rage Pro Turbo 2X Graphics Controller provides the following features:

Comprehensive A.G.P. support, including 1X (66 MHz) and 2X (133 MHz) fully pipelined operation and sideband support

Full bus mastering support

Triple 8-bit palette DAC with gamma correction. Pixel rates up to 230 MHz

Supports DDC1 and DDC2B+ for Plug and Play monitors

†

Game acceleration including support for Microsoft’s DirectDraw sprites, transparent blit, masked blit, and context chaining

4 KB on-chip texture cache

†

Direct3D

4 MB of 100 MHz SGRAM on the motherboard

texture lighting

: double buffering, virtual

1.10.1.1 Motion Video Acceleration

The ATI Rage Pro Turbo 2X supports motion video acceleration by providing:

Multistream video for video conferencing

Filtered horizontal/vertical, up/down, scaling enhances playback quality

Enhanced line buffer allows vertical filtering of native MPEG-2 size (720 x 480) images

DVD/MPEG-2 decode assist

Filter circuitry that eliminates video artifacts caused by displaying interlaced video on noninterlaced displays

Hardware mirroring for flipping video images in video conferencing systems

Bidirectional bus mastering engine with planar YUV-to-packed format converter

YUV to RGB color space converter with support for both packed and planar YUV:



YUV 4:2:2, YUV 4:1:0, and YUV 4:2:0



RGB 32, RGB 16/15, RGB 8, and monochrome

1.10.1.2 Disabling On-Board A.G.P.

To provide an upgrade path, the on-board A.G.P. is disabled if an A.G.P. add-in card is used. Only half-length NLX A.G.P. cards can be used with this motherboard.

JN440BX Motherboard Technical Product Specification

1.11 Hardware Monitor

The management extension hardware provides low-cost instrumentation capabilities on a chip. The features include:

Integrated temperature sensor

Fan speed sensors

Power supply voltage monitoring to detect levels above or below acceptable values

Remote reset capabilities from a remote peer or server through LANDesk Version 3.3 and service layers

Client Manager,

1.12 Onboard Networking

The onboard networking subsystem is an Ethernet† LAN interface that provides both 10Base-T and 100Base-TX connectivity. Onboard LAN can be enabled or disabled in the Setup program. Features include:

32-bit direct bus mastering on the PCI bus

Shared memory structure in the host memory that copies data directly to/from host memory

10Base-T and 100Base-TX capability using a single RJ-45 connector

IEEE 802.3P Auto-Negotiation for the fastest available connection

Jumperless configuration; the LAN subsystem is completely software configurable

Remote wake up controller

1.12.1 Intel® 82558 LAN Controller

This device is the heart of the LAN subsystem. It provides the following functions:

CSMA/CD protocol engine

PCI compatibility

DMA engine for movement of commands, status, and network data across the PCI bus

Standard MII interface for access to IEEE 802.3P -compliant physical layer devices

Motherboard Description

1.12.2 Alert On LAN Component

The Alert on LAN component is a companion device to the Intel® 82558 LAN controller. Together, these devices provide a management interface between a remote management console (or management server) and a client system monitoring instrumentation. When an alert input is asserted, the Alert on LAN component transmits Ethernet packets to the 82558 through an 8-bit dedicated data path. Examples of events that can trigger alert messages to a management server include:

Chassis intrusion

System BIOS hang (transmits POST code error)

LAN leash (transmits an alert that the LAN cable was disconnected)

Processor missing signal

Sensing an interrupt from the hardware monitor

1.12.3 LAN Software

The software for the LAN subsystem, including setup/diagnostic software and a readme file viewer that lists supported drivers, is available on the Intel web site. See Section 6.1.

JN440BX Motherboard Technical Product Specification

1.13 Motherboard Connectors

Figure 5 shows the connectors on the motherboard.

B66

DIMM Sockets(3)

A. G. P

J1K1

A66

J1D1, J2D1

J2D2

J8M1

CD-ROM Audio

Table 1. CD-ROM Connector (J8M1)

Pin Signal Name

1 Ground 2 CD-Left 3 Ground 4 CD-Right

Fan

1 3

CPU Slot

J4D1

J2A1

Figure 5. Motherboard Connectors

OM07091

Motherboard Description

Table 2. Processor Fan (J2A1)

Pin Signal Name

1 GND 2 FAN_CTL 3 Tachometer

Table 3. Accelerated Graphics Port (J1K1)

Pin Signal Name Pin Signal Name Pin Signal Name Pin Signal Name

A1 +12V B1 No Connect A34 Vcc3.3 B34 Vcc3.3 A2 No Connect B2 Vcc A35 AGP_AD22 B35 AGP_AD21 A3 Reserved B3 Vcc A36 AGP_AD20 B36 AGP_AD19 A4 No Connect B4 No Connect A37 Ground B37 Ground A5 Ground B5 Ground A38 AGP_AD18 B38 AGP_AD17 A6 PIRQ0# B6 PIRQ1# A39 AGP_AD16 B39 AGP_CBE2 A7 RST# B7 HCLK_AGP A40 Vcc3.3 B40 Vcc3.3 A8 AGP_GNT1# B8 AGP_REQ1 A41 AGP_FRAME# B41 AGP_IRDY# A9 Vcc3.3 B9 Vcc3.3 A42 Reserved B42 PM_3V A10 AGP_ST1 B10 AGP_ST0 A43 Ground B43 Ground A11 Reserved B11 AGP_ST2 A44 Reserved B44 Reserved A12 AGP_PIPE# B12 AGP_DBF# A45 Vcc3.3 B45 Vcc3.3 A13 Ground B13 Ground A46 AGP_TRDY# B46 AGP_DEVSEL# A14 No Connect B14 No Connect A47 AGP_STOP# B47 Vcc3.3 A15 SBA1 B15 SBA0 A48 PCI_PM# B48 AGP_PERR# A16 Vcc3.3 B16 Vcc3.3 A49 Ground B49 Ground A17 SBA3 B17 SBA2 A50 AGP_PAR B50 AGP_SERR# A18 Reserved B18 SB_STB A51 AGP_AD15 B51 AGP_CBE1 A19 Ground B19 Ground A52 Vcc3.3 B52 Vcc3.3 A20 SBA5 B20 SBA4 A53 AGP_AD13 B53 AGP_AD14 A21 SBA7 B21 SBA6 A54 AGP_AD11 B54 AGP_AD12 A22 Key B22 Key A55 Ground B55 Ground A23 Key B23 Key A56 AGP_AD9 B56 AGP_AD10 A24 Key B24 Key A57 AGP_CBE0 B57 AGP_AD8 A25 Key B25 Key A58 Vcc3.3 B58 Vcc3.3 A26 AGP_AD30 B26 AGP_AD31 A59 Reserved B59 AD_STBA A27 AGP_AD28 B27 AGP_AD29 A60 AGP_AD6 B60 AGP_AD7 A28 Vcc3.3 B28 Vcc3.3 A61 Ground B61 Ground A29 AGP_AD26 B29 AGP_AD27 A62 AGP_AD4 B62 AGP_AD5 A30 AGP_AD24 B30 AGP_AD25 A63 AGP_AD2 B63 AGP_AD3 A31 Ground B31 Ground A64 Vcc3.3 B64 Vcc3.3 A32 Reserved B32 AD_STBB A65 AGP_AD0 B65 AGP_AD1 A33 AGP_CBE3 B33 AGP_AD23 A66 SMDATA B66 SMBCLK

JN440BX Motherboard Technical Product Specification

1.14 Back Panel Connectors

Figure 6 shows the general configuration of the I/O connectors on the back panel.

Line In Line Out

Mic

RJ-45 LAN

Parallel Port

USB

Keyboard

Serial Port ASerial Port B

Mouse/

Figure 6. Back Panel I/O Connectors

Video

OM07092

Table 4. Line-In Connector (1/8” Stereo jack) (J9P1)

Pin Signal I/O Description

TIP LLINE_IN I Analog Line-In Left Audio RING RLINE_IN I Analog Line-In Right Audio SLEEVE GND - Ground

Table 5. Line-Out Connector (1/8” Stereo jack) (J8P1)

Pin Signal I/O Description

TIP LLINE_OUT O Analog Line-Out Left Audio RING RLINE_OUT O Analog Line-Out Right Audio SLEEVE GND - Ground

Table 6. Microphone Connector (1/8” Stereo jack) (J8P2)

Pin Signal I/O Description

TIP MIC_IN I Analog Microphone audio signal RING V_REF O Microphone Bias Voltage SLEEVE GND - Ground

Motherboard Description

Table 7. RJ-45 LAN Connector (J7P2)

Pin Signal Name

1 TX2 TX3 RX4 No connect 5 No connect 6 RX7 No connect 8 No connect

JN440BX Motherboard Technical Product Specification

Table 8. USB Connector (J6P1)

Pin Signal I/O Description

1 +5V O Fused +5V 2 USB_D- I/O 3.3V differential USB signal D3 USB_D+ I/O 3.3V differential USB signal D+ 4 GND - Ground

Table 9. Serial Port A and B Connectors (J3P1 and J5P1)

Pin Signal I/O Description

1 DCD I Carrier Detect 2 SIN I Serial Data In 3 SOUT O Serial Data Out 4 DTR O Data Terminal Ready 5 GND - Ground 6 DSR I Data Set Ready 7 RTS O Request to Send 8 CTS I Clear to Send 9 RI I Ring Indicator

Table 10. Keyboard/Mouse Connectors (J4P1)

Pin Signal I/O Description

1 DATA I/O Keyboard/mouse data signal 2 Not connected - Not connected 3 GND - Ground 4 +5V O Fused +5V power 5 CLOCK I/O Keyboard/mouse clock signal 6 Not connected - Not connected

Motherboard Description

Table 11. Parallel Port Connector (J2P1)

Pin Std Signal ECP Signal EPP Signal I/O

1 STROBE# STROBE# WRITE# I/O 2 PD0 PD0 PD0 I/O 3 PD1 PD1 PD1 I/O 4 PD2 PD2 PD2 I/O 5 PD3 PD3 PD3 I/O 6 PD4 PD4 PD4 I/O 7 PD5 PD5 PD5 I/O 8 PD6 PD6 PD6 I/O 9 PD7 PD7 PD7 I/O 10 ACK# ACK# INTR I 11 BUSY BUSY#, PERIPHACK WAIT# I 12 PE PE, ACKREVERSE# PE I 13 SELECT SELECT SELECT I 14 AUTOFD# AUTOFD#, HOSTACK DATASTB# O 15 FAULT# FAULT#, PERIPHREQST# FAULT# I 16 INIT# INIT#, REVERSERQST# RESET# O 17 SLCTIN# SLCTIN# ADDRSTB# O 18 - 25 GND GND GND -

Table 12. VGA† Connector (J1P1)

Pin Signal I/O Description

1 RED I Analog RED 2 GREEN I Analog GREEN 3 BLUE I Analog BLUE 4 Not connected - Not connected 5 GND - Return for RED 6 GND - Return for GREEN 7 GND - Return for BLUE 8 GND 9 FUSED_+5V O Fused +5V 10 GND 11 Not connected - Not connected 12 DDC_DAT I/O DDC Data signal / MON_ID1 13 HSYNC O Horizontal Sync signal 14 VSYNC O Vertical Sync signal 15 DDC_CLK I/O DDC clock signal / MON_ID2

JN440BX Motherboard Technical Product Specification

1.15 Configuration Jumper

Figure 7 shows the location of the configuration jumper block on the motherboard. Table 13 summarizes the settings.

Config Select

3 1

J5G1

OM07093

Figure 7. Configuration Jumper Block

Table 13. Configuration Jumper Settings (J5G1)

Function Jumper Configuration

Normal 1-2 The BIOS uses current configuration information and passwords for booting. Configure 2-3 After the POST runs, Setup is run automatically, using BIOS defaults. The

maintenance menu is displayed.

Recovery none The BIOS attempts to recover the BIOS configuration. A recovery diskette

is required.

CAUTION

Moving the jumper with the power on can damage your computer. Always turn off the power and unplug the power cord from the computer before changing the jumper.

Motherboard Description

1.15.1 Normal Mode

This mode is for normal computer booting and operations. To enable this mode, pins 1 and 2 must be connected on the configuration jumper (J5G1). Access to the Setup program can be restricted using a supervisor or user password.

1.15.2 Configuration Mode

This mode is for configuring special BIOS settings, including processor speed and special maintenance options. This mode is used when upgrading the BIOS, upgrading the processor, or clearing the passwords. To enable this mode, pins 2 and 3 must be connected on the configuration jumper (J5G1). In this mode, Setup automatically executes after the POST runs. No password is required, and this mode overrides any passwords that are set. The Maintenance menu is the first menu displayed. This menu provides options for setting the processor speed and clearing passwords. User and supervisor settings are preserved and used when the computer is rebooted.

For the configuration changes to take effect after exiting the Setup program, power down the computer, set the configuration jumper to normal mode (see Section 1.15.1), and boot the computer.

1.15.3 Recovery Mode

This mode is for recovering BIOS data. To enable this mode, no pins are connected on the configuration jumper (J5G1). After the computer is powered-on, the BIOS attempts to upgrade or recover the BIOS data from a diskette in the drive. If a diskette is not in the boot drive, the BIOS runs the POST, does not boot the operating system, and sounds a 4 - 4 - 2 - 4 beep code. Continuos beeps indicate failed recovery attempt. For a full list of beep codes please refer to Section 5.3.

For the configuration changes to take effect after a successful recovery, power down the computer, set the configuration jumper to normal mode (see Section 1.15.1), and boot the computer.

JN440BX Motherboard Technical Product Specification

1.16 NLX Card Edge Connector

The NLX riser connector on the motherboard consists of a 340 (2 x 170) position and a supplemental 26 (2 x 13) position gold finger contact. All edge connector pin definitions are defined in the NLX specification, version 1.2.

According to the NLX specification, the motherboard edge connector provides the following:

PCI signals (the motherboard supports up to four PCI devices)

ISA signals

Two IDE channels

One diskette drive interface

Infrared signals

Miscellaneous front panel signals

Power connection for the motherboard

See Section 6.2 for information about the NLX Specification. Table 14, Table 15, and Table 16 specify the pinouts located on the primary connector; Table 17

specifies the pinouts located on the supplemental connector. All edge connector pin definitions are defined in the NLX specification, version 1.2.

Table 14. PCI Segment, Riser Interconnect

Pin Signal Name Type I/O Termination Pin Signal Name Type I/O Termination

A1 -12V PWR NA NA B1 PCSPKR_RT AUDIO O NA A2 REQ4#* PCI I RIS B2 +12V PWR NA NA A3 +12V PWR NA NA B3 PCSPKR_LFT AUDIO O NA A4 GNT4#* PCI O RIS B4 +12V PWR NA NA A5 3.3VDC PWR NA NA B5 PCICLK0 PCI O MB A6 PCIINT3# PCI I RIS B6 GND PWR NA NA A7 3.3VDC PWR NA NA B7 PCICLK1 PCI O MB A8 PCIINT0# PCI I RIS B8 SER_IRQ MISC I/O MB A9 PCIINT1# PCI I RIS B9 PCIINT2# PCI I RIS A10 PCICLK2 PCI O MB B10 3.3VDC PWR NA NA A11 3.3VDC PWR NA NA B11 PCICLK3 PCI O MB A12 PCI_RST# PCI O MB B12 GND PWR NA NA A13 GNT0# PCI O RIS B13 GNT3# PCI O RIS A14 PCICLK4 PCI O MB B14 3.3VDC PWR NA NA A15 GND PWR NA NA B15 GNT2# PCI O RIS A16 GNT1# PCI O RIS B16 AD[31] PCI I/O RIS

* Not supported

continued

Motherboard Description

Table 14. PCI Segment, Riser Interconnect

Pin Signal Name Type I/O Termination Pin Signal Name Type I/O Termination

(continued)

A17 3.3VDC PWR NA NA B17 REQ0# PCI I RIS A18 REQ2# PCI I RIS B18 GND PWR NA NA A19 REQ3# PCI I RIS B19 AD[29] PCI I/O RIS A20 AD[30] PCI I/O RIS B20 AD[28] PCI I/O RIS A21 GND PWR NA NA B21 AD[26] PCI I/O RIS A22 AD[25] PCI I/O RIS B22 3.3VDC PWR NA NA A23 REQ1# PCI I RIS B23 AD[24] PCI I/O RIS A24 AD[27] PCI I/O RIS B24 C/BE[3]# PCI I/O RIS A25 3.3VDC PWR NA NA B25 AD[22] PCI I/O RIS A26 AD[23] PCI I/O RIS B26 GND PWR NA NA A27 AD[20] PCI I/O RIS B27 AD[21] PCI I/O RIS A28 AD[18] PCI I/O RIS B28 AD[19] PCI I/O RIS A29 GND PWR NA NA B29 AD[16] PCI I/O RIS A30 AD[17] PCI I/O RIS B30 3.3VDC PWR NA NA A31 IRDY# PCI I/O RIS B31 C/BE[2]# PCI I/O RIS A32 DEVSEL# PCI I/O RIS B32 FRAME# PCI I/O RIS A33 3.3VDC PWR NA NA B33 TRDY# PCI I/O RIS A34 STOP# PCI I/O RIS B34 GND PWR NA NA A35 PERR# PCI I/O RIS B35 SDONE PCI I/O RIS A36 SERR# PCI I/O RIS B36 LOCK# PCI I/O RIS A37 GND PWR NA NA B37 SBO# PCI I/O RIS A38 C/BE[1]# PCI I/O RIS B38 3.3VDC PWR NA NA A39 AD[13] PCI` I/O RIS B39 AD[15] PCI I/O RIS A40 AD[10] PCI I/O RIS B40 PAR PCI I/O RIS A41 GND PWR NA NA B41 AD[14] PCI I/O RIS A42 C/BE[0]# PCI I/O RIS B42 GND PWR NA NA A43 AD[00] PCI I/O RIS B43 AD[11] PCI I/O RIS A44 AD[06] PCI I/O RIS B44 AD[12] PCI I/O RIS A45 3.3VDC PWR NA NA B45 AD[09] PCI I/O RIS A46 AD[05] PCI I/O RIS B46 3.3VDC PWR NA NA A47 AD[01] PCI I/O RIS B47 AD[08] PCI I/O RIS A48 AD[03] PCI I/O RIS B48 AD[07] PCI I/O RIS A49 GND PWR NA NA B49 AD[04] PCI I/O RIS A50 AD[02] PCI I/O RIS B50 GND PWR NA NA A51 5VDC PWR NA NA B51 PCI_PM# PCI I/O MB

I/O Column Definitions Relative to Motherboard

O = Output from motherboard to riser I = Input from riser to motherboard

Termination Column Definitions:

MB = Termination/Pullup/Pulldown/debounce is on motherboard RIS = Termination/Pullup/Pulldown is on riser card

N/A = Not on motherboard or riser

JN440BX Motherboard Technical Product Specification

Table 15. ISA Segment, Riser Interconnect

Pin Signal Name Type I/O Termination Pin Signal Name Type I/O Termination

A52 RSTDRV ISA O MB B52 5VDC PWR NA NA A53 IOCHK# ISA I MB B53 IRQ9 ISA O MB A54 SD[6] ISA I/O MB B54 DRQ2 ISA I MB A55 SD[7] ISA I/O MB B55 SD[3] ISA I/O MB A56 SD[4] ISA I/O MB B56 0WS# ISA I MB A57 5VDC PWR NA NA B57 SD[1] ISA I/O MB A58 SD[2] ISA I/O MB B58 AEN ISA O MB A59 SD[5] ISA I/O MB B59 IOCHRDY ISA I MB A60 SD[0] ISA I/O MB B60 SA[18] ISA I/O MB A61 SMEMW# ISA O MB B61 SMEMR# ISA O MB A62 SA[19] ISA I/O MB B62 SA[16] ISA I/O MB A63 IOW# ISA I/O MB B63 IOR# ISA I/O MB A64 SA[17] ISA I/O MB B64 DRQ3 ISA I MB A65 GND PWR NA NA B65 SA[15] ISA I/O MB A66 DACK#3 ISA O MB B66 GND PWR NA NA A67 SA[14] ISA I/O MB B67 SA[13] ISA I/O MB A68 DACK1# ISA O MB B68 5VDC PWR NA NA A69 DRQ1 ISA I MB B69 REFRESH# ISA I/O MB A70 SA[12] ISA I/O MB B70 SA[11] ISA I/O MB A71 SYSCLK ISA O MB B71 SA[10] ISA I/O MB A72 SA[9] ISA I/O MB B72 IRQ7 ISA I MB A73 5VDC PWR NA NA B73 IRQ6 ISA I MB A74 IRQ5 ISA I MB B74 SA[8] ISA I/O MB A75 SA[7] ISA I/O MB B75 SA[6] ISA I/O MB A76 IRQ3 ISA I MB B76 DACK2# ISA O MB A77 IRQ4 ISA I MB B77 SA[4] ISA I/O MB A78 SA[5] ISA I/O MB B78 GND PWR NA NA A79 TC ISA O MB B79 SA[3] ISA I/O MB A80 BALE ISA O MB B80 SA[2] ISA I/O MB A81 GND PWR NA NA B81 SA[1] ISA I/O MB A82 OSC ISA O MB B82 SA[0] ISA I/O MB A83 IOCS16# ISA I MB B83 SBHE# ISA I/O MB A84 MEMCS16# ISA I MB B84 LA[23] ISA I/O MB A85 IRQ11 ISA I MB B85 LA[22] ISA I/O MB A86 IRQ10 ISA I MB B86 LA[21] ISA I/O MB A87 IRQ15 ISA I MB B87 LA[20] ISA I/O MB

continued

Motherboard Description

Table 15. ISA Segment, Riser Interconnect

Pin Signal Name Type I/O Termination Pin Signal Name Type I/O Termination

(continued)

A88 IRQ12 ISA I MB B88 LA[19] ISA I/O MB A89 GND PWR NA NA B89 LA[18] ISA I/O MB A90 IRQ14 ISA I MB B90 LA[17] ISA I/O MB A91 DRQ0 ISA I MB B91 DACK0# ISA O MB A92 MEMR# ISA I/O MB B92 DACK5# ISA O MB A93 MEMW# ISA I/O MB B93 SD[8] ISA I/O MB A94 SD[9] ISA I/O MB B94 DACK6# ISA O MB A95 DRQ5 ISA I MB B95 SD[10] ISA I/O MB A96 DRQ6 ISA I MB B96 5VDC PWR NA NA A97 5VDC PWR NA NA B97 SD[11] ISA I/O MB A98 SD[12] ISA I/O MB B98 DRQ7 ISA I MB A99 DACK7# ISA O MB B99 SD[13] ISA I/O MB A100 SD[14] ISA I/O MB B100 SD[15] ISA I/O MB A101 MASTER# ISA I MB B101 GND PWR NA NA

I/O Column Definitions Relative to Motherboard

O = Output from motherboard to riser I = Input from riser to motherboard

Termination Column Definitions:

MB = Termination/Pullup/Pulldown/debounce is on motherboard RIS = Termination/Pullup/Pulldown is on riser card

N/A = Not on motherboard or riser

Table 16. IDE, Floppy, and Front Panel Section, Riser Interconnect

Pin Signal Name Type I/O Termination Pin Signal Name Type I/O Termination

A102 IDEA_DD8 IDE I/O MB B102 GND PWR NA NA A103 IDEA_RESET# IDE O MB B103 IDEA_DD7 IDE I/O MB A104 IDEA_DD9 IDE I/O MB B104 IDEA_DD6 IDE I/O MB A105 5VDC PWR NA NA B105 IDEA_DD5 IDE I/O MB A106 IDEA_DD4 IDE I/O MB B106 IDEA_DD11 IDE I/O MB A107 IDEA_DD10 IDE I/O MB B107 IDEA_DD12 IDE I/O MB A108 IDEA_DD3 IDE I/O MB B108 GND PWR NA NA A109 IDEA_DD13 IDE I/O MB B109 IDEA_DD14 IDE I/O MB A110 IDEA_DD1 IDE I/O MB B110 IDEA_DD2 IDE I/O MB A111 GND PWR NA NA B111 IDEA_DD0 IDE I/O MB A112 IDEA_DIOW# IDE O MB B112 IDEA_DD15 IDE I/O MB

continued

JN440BX Motherboard Technical Product Specification

Table 16. IDE, Floppy, and Front Panel Section, Riser Interconnect

Pin Signal Name Type I/O Termination Pin Signal Name Type I/O Termination

A113 IDEA_DMARQ IDE I MB B113 IDEA_DIOR# IDE O MB A114 IDEA_IORDY IDE I MB B114 IDEA_CSEL IDE O MB A115 IDEA_DMACK# IDE O MB B115 IDEA_INTRQ IDE I MB A116 RESERVED RES NA NA B116 5VDC PWR NA NA A117 IDEA_DA2 IDE O MB B117 IDEA_DA1 IDE O MB A118 IDEA_CS0# IDE O MB B118 IDEA_DA0 IDE O MB A119 5VDC PWR NA NA B119 IDEA_CS1# IDE O MB A120 IDEA_DASP# IDE I RIS B120 IDEB_DD8 IDE I/O MB A121 IDEB_RESET# IDE O MB B121 IDEB_DD7 IDE I/O MB A122 IDEB_DD9 IDE I/O MB B122 GND PWR NA NA A123 IDEB_DD6 IDE I/O MB B123 IDEB_DD10 IDE I/O MB A124 IDEB_DD5 IDE I/O MB B124 5VDC PWR NA NA A125 IDEB_DD11 IDE I/O MB B125 IDEB_DD4 IDE I/O MB A126 IDEB_DD12 IDE I/O MB B126 IDEB_DD3 IDE I/O MB A127 GND PWR NA NA B127 IDEB_DD13 IDE I/O MB A128 IDEB_DD2 IDE I/O MB B128 IDEB_DD14 IDE I/O MB A129 IDEB_DD15 IDE I/O MB B129 IDEB_DD1 IDE I/O MB A130 IDEB_DIOW# IDE I/O MB B130 IDEB_DD0 IDE I/O MB A131 IDEB_DMARQ IDE I MB B131 IDEB_DIOR# IDE O MB A132 IDEB_IORDY IDE I MB B132 IDEB_CSEL IDE O MB A133 GND PWR NA NA B133 IDEB_INTRQ IDE I MB A134 IDEB_DMACK# IDE O MB B134 IDEB_DA1 IDE O MB A135 RESERVED RES NA NA B135 IDEB_DA2 IDE O MB A136 IDEB_DA0 IDE O MB B136 IDEB_CS1# IDE O MB A137 IDEB_CS0# IDE O MB B137 IDEB_DASP# IDE I RIS A138 DRV2# FLOPPY GND NA B138 GND PWR NA NA A139 5VDC PWR NA NA B139 DRATE0 FLOPPY O NA A140 RESERVED RES NA NA B140 FDS1# FLOPPY O NA A141 DENSEL FLOPPY O NA B141 FDS0# FLOPPY O NA A142 FDME0# FLOPPY O NA B142 DIR# FLOPPY O NA A143 INDX# FLOPPY I RIS B143 MSEN1 FLOPPY I NA

(continued)

continued

Motherboard Description

Table 16. IDE, Floppy, and Front Panel Section, Riser Interconnect

(continued)

Pin Signal Name Type I/O Termination Pin Signal Name Type I/O Termination

A144 FDME1# FLOPPY O NA B144 GND PWR NA NA A145 GND PWR NA NA B145 WRDATA# FLOPPY O NA A146 WE# FLOPPY O NA B146 TRK0# FLOPPY I RIS A147 STEP# FLOPPY O NA B147 MSEN0 FLOPPY I NA A148 WP# FLOPPY I RIS B148 RDDATA# FLOPPY I RIS A149 HDSEL# FLOPPY O NA B149 DSKCHG# FLOPPY I RIS A150 SDA MISC I/O MB B150 GND PWR NA NA A151 SCL MISC O MB B151 IRSL0 MISC I/O NA A152 FAN_TACH1 MISC I NA B152 IRSL1 MISC I/O NA A153 FAN_TACH2 MISC I NA B153 IRSL2 MISC I/O NA A154 FAN_TACH3 MISC I NA B154 IRTX MISC I/O NA A155 FAN_CTL MISC I NA B155 IRRX MISC I/O NA A156 5VDC PWR NA NA B156 FP_SLEEP MISC I MB A157 USB1/3_N MISC I/O RIS B157 FP_RST# MISC I MB A158 USB1/3_P MISC I/O RIS B158 GND PWR NA NA A159 USB1/3_OC# MISC I RIS B159 PWRLED#* MISC O RIS A160 USB2/4_N MISC I/O RIS B160 PWOK PWR I NA A161 USB2/4_P MISC I/O RIS B161 SOFT_ON/OFF# PWR I MB A162 USB2/4_OC# MISC I RIS B162 PS_ON# PWR O NA A163 GND PWR NA NA B163 LAN_WAKE MISC I MB A164 VBAT MISC O RIS B164 LAN_ACTVY_

MISC O NA

LED# A165 TAMP_DET# MISC I MB B165 MDM_WAKE# MISC I MB A166 MSG_WAIT_

MISC O RIS B166 1394_PWR PWR I NA

LED# A167 1394_GND PWR O NA B167 RESERVED RES NA NA A168 RESERVED RES NA NA B168 RESERVED RES NA NA A169 5VSB PWR I NA B169 RESERVED RES NA NA A170 3.3VSENSE PWR O NA B170 -5V PWR NA NA

I/O Column Definitions Relative to Motherboard

O = Output from motherboard to riser I = Input from riser to motherboard

Termination Column Definitions:

MB = Termination/Pullup/Pulldown/debounce is on motherboard RIS = Termination/Pullup/Pulldown is on riser card

N/A = Not on motherboard or riser * High (sleep) Low (normal) is a board specific implementation

JN440BX Motherboard Technical Product Specification

Table 17. Signals, NLX Riser with Supplemental Connector

Pin Signal Name Type I/O * Description Signal Type

X1 CD_IN_LT AUDIO I CD-ROM Line-in left. Analog

X2 AGND PWR NA Low pass filtered ground for audio circuitry on

the riser.

X3 MIC_IN AUDIO I Pre-amplified microphone input. Pre-amp

circuitry to reside on riser or in microphone.

X4 LINE_OUT_LT AUDIO O Analog Line-out left. Analog

X5 FP_SPKR_EN ** AUDIO I This signal indicates if headphones have

been plugged into the front panel LINE-OUT jack. The signal is connected to one of the wipers on the audio jack and is HIGH when the headphones are plugged into the front audio jack and LOW when they are not. The signal is pulled high through a pull-up on the motherboard (Typically 100K).

X6 VOL_DN# ** AUDIO I Connects to Volume Down switch on front

panel, appropriate pull-up resistor on motherboard. The motherboard provides

debounce protection and a pull-up resistor. X7 GND PWR NA Ground NA X8 SMI# ** SYS I System Management Interrupt that is an input

to the motherboard. X9 RESERVED RES NA Reserved NA X10 RESERVED RES NA Reserved NA X11 RESERVED RES NA Reserved NA X12 AGND PWR NA Low pass filtered ground for audio circuitry on

the riser. X13 MODEM_MIC AUDIO O Pre-amplified microphone mono output signal

from motherboard to telephony device.

CD_IN_RT AUDIO I CD-ROM Line-in right. Analog

CD_IN_GND PWR I Isolated CD-ROM ground. NA

AVCC PWR O Clean power from the motherboard to audio

circuitry on the NLX riser; could be an

isolated power source; 1.5 Ampere max.

limitation because of the connector / gold

finger limitation. Y4 LINE_OUT_RT AUDIO O Analog Line-out right. Analog

1 V RMS NA

Analog 1 V RMS

1 V RMS TTL

TTL

open drain

Analog 1 V RMS

1 V RMS

5-9 V DC

1 V RMS

continued

Motherboard Description

Table 17. Signals, NLX Riser with Supplemental Connector

Pin Signal Name Type I/O * Description Signal Type

Y5 FP_MIC_EN ** AUDIO I This signal indicates if a microphone has

been plugged into the front panel MIC_IN jack. The signal is connected to a wiper on the MIC_IN jack and is LOW when the microphone is plugged in and HIGH when it is not. The signal is pulled LOW through a pull down on the motherboard (Typically 100K).

Y6 VOL_UP# ** AUDIO I Connects to Volume Up switch on front

panel, appropriate pull-up resistor on motherboard. The motherboard provides

debounce protection and a pull-up resistor. Y7 AC_RST# ** AC’97 O AC’97 master H/W reset. TTL Y8 AC_SD_IN ** AC’97 I Serial, time division, multiplexed, AC’97 input

stream to the motherboard from the codec on

the riser (output from the codec). Y9 GROUND PWR NA Digital (main motherboard) ground plane. NA Y10 AC_SD_OUT ** AC’97 O Serial, time division, multiplexed, AC’97

output from the motherboard to the codec on

the riser (input to the codec). Y11 AC_SYNC ** AC’97 O 48 KHz fixed rate sample sync signal from

the motherboard to the codec on the riser. Y12 AC_BIT_CLK ** AC’97 I 12.288 MHz serial data clock. TTL Y13 MODEM_SPKR AUDIO O Analog mono output signal from telephony

device to motherboard.

* I/O column: relative to motherboard, “O” = output, from motherboard to riser; “I” = input, from riser to motherboard. ** These signals are not supported.

(continued)

TTL

Analog 1 V RMS

1.17 Reliability

The mean time between failures (MTBF) prediction is calculated using component and subassembly random failure rates. The calculation is based on the Bellcore Reliability Prediction Procedure, TR-NWT-000332, Issue 4, September 1991. The MTBF prediction is for estimating repair rates and spare parts requirements.

The Mean Time Between Failures (MTBF) data is calculated from predicted data at 55 ºC. Motherboard MTBF: 173,814 hours

JN440BX Motherboard Technical Product Specification

1.18 Environmental

Table 18. Motherboard Environmental Specifications

Parameter Specification

Temperature Non-Operating -40 qC to +70 qC Operating 0 qC to +55 qC Shock Unpackaged 50 G trapezoidal waveform

Velocity change of 170 inches/second

Packaged Half sine 2 millisecond

Product Weight Free Fall (inches) Velocity Change (inches/sec) <20 lbs. 36 167 21-40 lbs. 30 152 41-80 lbs. 24 136

81-100 lbs. 18 118 Vibration Unpackaged 5 Hz to 20 Hz : 0.01g² Hz sloping up to 0.02 g² Hz

20 Hz to 500 Hz : 0.02g² Hz (flat) Packaged 10 Hz to 40 Hz : 0.015g² Hz (flat)

40 Hz to 500 Hz : 0.015g² Hz sloping down to 0.00015 g² Hz

Motherboard Description

1.19 Power Consumption

Tables 19 and 20 list voltage and current specifications for a computer that contains the motherboard, a 350 MHz Pentium II processor, 32 MB SDRAM, 512 KB cache, 3.5-inch diskette drive, 2.1 GB IDE hard disk drive, and a 6X IDE CD-ROM drive. This information is provided only as a guide for calculating approximate power usage with additional resources added.

Values for the Windows 95 desktop mode are measured at 640 x 480 x 256 colors and 60 Hz refresh rate. AC watts are measured with a typical 145 W supply, nominal input voltage and frequency, with true RMS wattmeter at the line input.

Table 19. DC Voltage

Voltage Acceptable Tolerance Wattage Current

+3.3V ± 5% 46W =13.94A +5V ± 5% 40W =8A

-5V ± 5% 0W =0A +12V ± 5% 9W =750mA

-12V ± 5% 3W =250mA 5V SB (Stand By) ± 5% 3.6W =720mA

Table 20. Power Usage

DC (amps) at:

Mode AC (watts) +3.3 V +5 V +12 V -12 V

DOS prompt, APM disabled 46 1.64 A 3.16 A 178 mA 16.55 mA Windows 95 desktop, APM disabled 47 1.59 A 3.17 A 190.5 mA 32.83 mA Windows 95 desktop, APM enabled, in

System Management Mode (SMM)

29 1.58 A 85 mA 156 mA 32.64 mA

For typical configurations, the motherboard is designed to operate with at least a 200 W NLX power supply (see Section 6.2 for the specification). Use a higher wattage supply for heavily loaded configurations. The power supply must comply with the NLX power supply recommendations.

Table 21 shows the max DC power requirements for systems in either Sleep or Normal operating modes. Power consumption is independent of the operating system used and other variables.

Table 21. Processor Fan DC Power Requirements (J2A1)

Mode Voltage Max Amps

Sleep 6.7 1 Normal 9.1 1

JN440BX Motherboard Technical Product Specification

1.20 Regulatory Compliance

This motherboard complies with the following safety and EMC regulations when correctly installed in a compatible host system.

Table 22. Safety Regulations

Regulation Title

UL 1950 - CSA 950-95, 3rd edition, Dated 07-28-95

EN 60 950, 2nd Edition, 1992 (with Amendments 1, 2 & 3)

IEC 950, 2nd edition, 1991 (with Amendments 1, 2, 3, and 4)

EMKO-TSE (74-SEC) 207/94 Summary of Nordic deviations to EN 60 950. (Norway, Sweden,

The Standard for Safety of Information Technology Equipment including Electrical Business Equipment. (USA & Canada)

The Standard for Safety of Information Technology Equipment including Electrical Business Equipment. (European Union)

The Standard for Safety of Information Technology Equipment including Electrical Business Equipment. (International)

Denmark & Finland)

Table 23. EMC Regulations

Regulation Title

FCC Class B Title 47 of the Code of Federal Regulations, Parts 2 & 15, Subpart B,

pertaining to unintentional radiators. (USA)

CISPR 22, 2nd Edition, 1993 Limits and methods of measurement of Radio Interference

Characteristics of Information Technology Equipment. (International)

EN 55 022, 1995 Limits and methods of measurement of Radio Interference

Characteristics of Information Technology Equipment. (Europe)

EN 50 082-1 (1992) Generic Immunity Standard; Currently compliance is determined via

testing to IEC 801-2, -3, and -4. (Europe)

VCCI Class B (ITE) Implementation Regulations for Voluntary Control of Radio Interference

by Data Processing Equipment and Electronic Office Machines. (Japan)

ICES-003, Issue 2 Interference-Causing Equipment Standard, Digital Apparatus. (Canada)

1.20.1 Product Certification Markings

This motherboard has the following product certification markings:

European CE Marking: Consists of a marking on the board and shipping container.

UL Recognition Mark: Consists of the UL File No. E139761 on the component side of the board and the PB No. on the solder side of the board. Board material flammability is 94V-1 or -0.

Each board will be marked with an FCC Declaration of Conformity.

Canadian Compliance: Consists of small c followed by a stylized backward UR on component side of the board.

2 Motherboard Resources

2.1 Memory Map

Table 24. System Memory Map

Address Range (decimal) Address Range (hex) Size Description

1024 K - 393216 K 100000 - 18000000 383 MB Extended memory 1008 K - 1024 K FC000 - FFFFF 16 KB Boot block 1000 K - 1008 K FA000 - FBFFF 8 KB ESCD (Plug and Play configuration and

996 K - 1000 K F9000 - F9FFF 4 KB Reserved for BIOS 992 K - 996 K F8000 - F8FFF 4 KB OEM Logo or Scan User Flash 928 K - 992 K E8000 - F7FFF 64 KB POST BIOS 896 K - 928 K E0000 - E7FFF 32 KB POST BIOS (Available as UMB) 800 K - 896 K C8000 - DFFFF 96 KB Available high DOS memory (open to ISA

640 K - 800 K A0000 - C7FFF 160 KB Video memory and BIOS 639 K - 640 K 9FC00 - 9FFFF 1 KB Extended BIOS data (movable by memory

512 K - 639 K 80000 - 9FBFF 127 KB Extended conventional memory 0 K - 512 K 00000 - 7FFFF 512 KB Conventional memory

DMI)

and PCI bus)

manager software)

2.2 DMA Channels

Table 25. DMA Channels

DMA Channel Number Data Width System Resource

0 8- or 16-bits Audio 1 8- or 16-bits Audio / Parallel Port 2 8- or 16-bits Diskette Drive 3 8- or 16-bits Parallel Port (for ECP or EPP) / Audio 4 Reserved - Cascade Channel 5 16-bits Open 6 16-bits Open 7 16-bits Open

JN440BX Motherboard Technical Product Specification

2.3 I/O Map

Table 26. I/O Map

Address (hex) Size Description

0000 - 000F 16 bytes PIIX4- DMA 1 0020 - 0021 2 bytes PIIX4 - interrupt controller 1 002E - 002F 2 bytes I/O controller configuration registers 0040 - 0043 4 bytes PIIX4 - Counter/Timer 1 0048 - 004B 4 bytes PIIX4- Counter/Timer 2 0060 1 byte Keyboard Controller Byte - Reset IRQ 0061 1 byte PIIX4 - NMI, Speaker Control 0064 1 byte Keyboard controller, CMD/STAT Byte 0070, bit 7 1 bit PIIX4 - enable NMI 0070, bits 6:0 7 bits PIIX4 - real time clock, address 0071 1 byte PIIX4 - real time clock, data 0078 1 byte Reserved - motherboard configuration 0079 1 byte Reserved - motherboard configuration 0080 - 008F 16 bytes PIIX4 - DMA page registers 00A0 - 00A1 2 bytes PIIX4 - interrupt controller 2 00B2 - 00B3 2 bytes APM control 00C0 - 00DE 31 bytes PIIX4 - DMA 2 00F0 1 byte Reset numeric error 0170 - 0177 8 bytes Secondary IDE channel 01F0 - 01F7 8 bytes Primary IDE channel 0220 - 022F 16 bytes Audio (Sound Blaster compatible) 0240 - 024F 16 bytes Audio (Sound Blaster compatible) 0278 - 027F 8 bytes LPT2 02E8 - 02EF 8 bytes COM4/Video (8514A) 02F8 - 02FF 8 bytes COM2 0300 - 0301 2 bytes MPU-401 (MIDI) 0330 - 0331 2 bytes MPU-401 (MIDI) 0332 - 0333 2 bytes MPU-401 (MIDI) 0334 - 0335 2 bytes MPU-401 (MIDI) 0376 1 byte Secondary IDE channel command port 0377, bits 6:0 7 bits Secondary IDE channel status port 0378- 037F 8 bytes LPT1

continued

Motherboard Resources

Table 26. I/O Map

Address (hex) Size Description

0388- 038D 6 bytes AdLib† (FM synthesizer) 03B4 - 03B5 2 bytes Video (VGA) 03BA 1 byte Video (VGA) 03BC - 03BF 4 bytes LPT3 03C0 - 03CA 11 bytes Video (VGA) 03CC 1 byte Video (VGA) 03CE - 03CF 2 bytes Video (VGA) 03D4 - 03D5 2 bytes Video (VGA) 03DA 1 byte Video (VGA) 03E8 - 03EF 8 bytes COM3 03F0 - 03F5 6 bytes Diskette Channel 1 03F6 1 byte Primary IDE channel command port 03F7 (Write) 1 byte Diskette channel 1 command 03F7, bit 7 1 bit Diskette change channel 1 03F7, bits 6:0 7 bits Primary IDE channel status port 03F8 - 03FF 8 bytes COM1 04D0 - 04D1 2 bytes Edge/level triggered PIC 0530 - 0537 8 bytes Windows Sound System 0604 - 060B 8 bytes Windows Sound System LPTn + 400h 8 bytes ECP port, LPTn base address + 400h 0CF8 - 0CFB* 4 bytes PCI configuration address register 0CF9** 1 byte Turbo and reset control register 0CFC - 0CFF 4 bytes PCI configuration data register 0E80 - 0E87 8 bytes Windows Sound System 0F40- 0F47 8 bytes Windows Sound System FF00 - FF07 8 bytes IDE bus master register FFA0 - FFA7 8 bytes Primary bus master IDE registers FFA8 - FFAF 8 bytes Secondary bus master IDE registers

* DWORD access only ** Byte access only

(continued)

JN440BX Motherboard Technical Product Specification

2.4 PCI Configuration Space Map

Table 27. PCI Configuration Space Map

Bus Number (hex)

00 00 00 Intel 82440BX (PAC) 00 01 00 Intel 82440BX PCI/A.G.P. bridge 00 07 00 Intel 82371EB (PIIX4E) PCI/ISA bridge 00 07 01 Intel 82371EB (PIIX4E ) IDE bus master 00 07 02 Intel 82371EB (PIIX4E) USB 00 07 03 Intel 82371EB (PIIX4E) power management 00 14 00 PCI expansion slot 1 00 12 00 PCI expansion slot 2 00 10 00 PCI expansion slot 3 00 0D 00 PCI expansion slot 4 00 06 00 Intel 82558 PCI Ethernet Controller (LAN) 01 00 00 On-board A.G.P. or A.G.P. connector (J1K1)

Device Number (hex)

2.5 Interrupts

Table 28. Interrupts

IRQ System Resource

NMI I/O Channel Check 0 Reserved, Interval Timer 1 Reserved, Keyboard Buffer Full 2 Reserved, Cascade Interrupt From Slave PIC 3 COM2* 4 COM1* 5 LPT2 (Plug and Play option) / Audio / User available 6 Diskette Drive 7 LPT1* 8 Real Time Clock 9 Reserved for PIIX4E system management bus 10 User available 11 Windows Sound System* / User available 12 Onboard Mouse Port (if present, else user available) 13 Reserved, Math Coprocessor 14 Primary IDE (if present, else user available) 15 Secondary IDE (if present, else user available)

* Default, but can be changed to another IRQ

Function Number (hex) Description

‡ ‡ ‡ ‡

Motherboard Resources

2.6 PCI Interrupt Routing Map

This section describes interrupt sharing and how the interrupt signals are connected between the

‡

PCI expansion slots be shared between devices attached to the PCI bus. In most cases, the small amount of latency added by interrupt sharing does not affect the operation or throughput of the devices. In some special cases where maximum performance is needed from a device, a PCI device should not share an interrupt with other PCI devices. Use the following information to avoid sharing an interrupt with a PCI add-in card.

PCI devices are categorized as follows to specify their interrupt grouping:

INTA: By default, all add-in cards that require only one interrupt are in this category. For almost all cards that require more than one interrupt, the first interrupt on the card is also classified as INTA.

INTB: Generally, the second interrupt on add-in cards that require two or more interrupts is classified as INTB. (This is not an absolute requirement.)

INTC and INTD: Generally, a third interrupt on add-in cards is classified as INTC and a fourth interrupt is classified as INTD.

and onboard PCI devices. The PCI specification specifies how interrupts can

The PIIX4E PCI-to-ISA bridge has four programmable interrupt request (PIRQ) input signals. Any PCI interrupt source (either onboard or from a PCI add-in card) connects to one of these PIRQ signals. Because there are only four signals, some PCI interrupt sources are mechanically tied together on the motherboard and therefore share the same interrupt. Table 29 lists the PIRQ

‡

signals and shows how the signals are connected to the PCI expansion slots

and to onboard PCI

interrupt sources.

Table 29. PCI Interrupt Routing Map

First PCI PIIX4 PIRQ Signal

PIRQA INTA INTB INTC PIRQB INTB INTC INTD INTA INTA PIRQC INTC INTD INTA INTB PIRQD INTD INTA INTB INTA INTA

Expansion

‡

Slot

Second PCI Expansion

‡

Slot

Third PCI Expansion

‡

Slot

Onboard Video

AGP Card USB

Ethernet LAN Controller

For example, assume an add-in card has one interrupt (group INTD) into the second PCI slot. In this slot, an interrupt source from group INTA connects to the PIRQD signal, which is already connected to the onboard video and USB PCI sources. The add-in card shares an interrupt with these onboard interrupt sources.

NOTE

✏

The PIIX4E can connect each PIRQ line internally to one of the IRQ signals (3, 4, 5, 7, 11, 14, 15). Typically, a device that does not share a PIRQ line will have a unique interrupt. However, in certain interrupt-constrained situations, it is possible for two or more of the PIRQ lines to be connected to the same IRQ signal.

JN440BX Motherboard Technical Product Specification

3 Overview of BIOS Features

The motherboard uses an Intel/Phoenix BIOS, which is stored in flash memory and can be upgraded using a disk-based program. In addition to the BIOS, the flash memory contains the Setup program, Power-On Self Test (POST), Advanced Power Management (APM) software, the PCI auto-configuration utility, and Windows 95-ready Plug and Play. See Section 6.2 for the supported versions of these specifications.

This motherboard supports system BIOS shadowing, allowing the BIOS to execute from 64-bit onboard write-protected DRAM.

The BIOS displays a message during POST identifying the type of BIOS and a the revision code. The initial production BIOS is identified as 4J4NB0X1.

3.1 BIOS Upgrades

A new version of the BIOS can be upgraded from a diskette using the Intel® Flash Memory Update utility that is available from Intel. This utility does BIOS upgrades as follows:

Updates the flash BIOS from a file on a disk

Updates the language section of the BIOS

Makes sure that the upgrade BIOS matches the target system to prevent accidentally installing a BIOS for a different type of system

BIOS upgrades and the update utility are available from Intel through the Intel World Wide Web site. See Section 6.1 for information about this site.

NOTE

✏

Please review the instructions distributed with the update utility before attempting a BIOS upgrade.

JN440BX Motherboard Technical Product Specification

3.2 4 Mbit E28F004S5 Symmetrical Flash Memory

The Intel® E28F004S5 is a high performance 4 Mbit (512 KB) symmetrical flash memory device. Internally, the device is grouped into eight 64-KB blocks that are individually erasable, lockable, and unlockable. Figure 8 shows the organization of the flash memory.

080000 07FFFF 070000 06FFFF 060000 05FFFF 050000 04FFFF 040000 03FFFF 030000 02FFFF 020000 01FFFF 010000 00FFFF 000000

64 KB Block 64 KB Block 64 KB Block 64 KB Block 64 KB Block 64 KB Block 64 KB Block 64 KB Block

6 5 4 3

2 1 0

Boot Block

Main System BIOS

Fault Tolerance

Backup

8 KB - Parameter Block 2 8 KB - Parameter Block 1

48 KB - Unused

OM08098

Figure 8. Memory Map of the Flash Device

Symmetrical flash memory allows both the boot and the fault tolerance blocks to increase in size from 16 KB to 64 KB. This increase allows the addition of features such as flash memory manager (FMM), dynamic memory detection, LS-120 recovery code, and extended security features.

The first two 8 KB blocks of the fault tolerance area are the parameter blocks. These blocks contain data such as microcode patches, vital product data (VPD), logo, SMBIOS interface, and ESCD information. The backup block contains a copy of the fault tolerance block.

The 4-Mbit flash component is organized as 512 KB x 8 bits and is divided into areas as described in Table 30. The table shows the addresses in the ROM image in normal mode.

Table 30. Flash Memory Organization

Address (Hex) Size Description

FFFF0000 - FFFFFFFF 64 KB Boot Block FFFA0000 - FFFEFFFF 256 KB Main BIOS Block FFF9F000 - FFF9FFFF 8 KB Used by BIOS (for Event Logging, as an example) FFF9E000 - FFF9EFFF 8 KB OEM logo or Scan Flash Area FFF9C000 - FFF9DFFF 16 KB Vital Product Data (VPD) Extended System Configuration Data

(ESCD) (DMI configuration data/Plug and Play Data) FFF90000 - FFF9BFFF 96 KB Fault Tolerant Storage FFF80000 - FFF8FFFF 64 KB Fault Tolerant Backup Block

Overview of BIOS Features

3.3 Plug and Play: PCI Autoconfiguration

The BIOS automatically configures PCI devices and Plug and Play devices. PCI devices may be onboard or add-in cards. Plug and Play devices are ISA add-in cards built to meet the Plug and Play specification. Autoconfiguration lets a user insert or remove PCI or Plug and Play cards without having to configure the system. When a user turns on the system after adding a PCI or Plug and Play card, the BIOS automatically configures interrupts, the I/O space, and other system resources. Any interrupts set to Available in Setup are considered to be available for use by the add-in card.

PCI interrupts are distributed to available ISA interrupts that have not been assigned to an ISA card or to system resources. The assignment of PCI interrupts to ISA IRQs is non-deterministic. PCI devices can share an interrupt, but an ISA device cannot share an interrupt allocated to PCI or to another ISA device. Autoconfiguration information is stored in the extended system configuration data (ESCD) format.

For information about the versions of PCI and Plug and Play supported by this BIOS, see Section 6.2. Copies of the specifications can be obtained from the Intel World Wide Web site (see Section 6.1).

3.4 PCI IDE Support

If Auto is selected as a primary or secondary IDE device (see Section 4.3.2) in Setup, the BIOS automatically sets up the two local-bus IDE connectors with independent I/O channel support. The IDE interface supports hard disk drives up to PIO Mode 4 and recognizes any ATAPI devices, including CD-ROM drives and tape drives (see Section 6.2 for the supported version of ATAPI). The BIOS determines the capabilities of each drive and configures them so as to optimize capacity and performance. To take advantage of the high-capacity storage devices, hard disk drives are automatically configured for logical block addressing (LBA) and to PIO Mode 3 or 4, depending on the capability of the drive. To override the autoconfiguration options, use the specific IDE device options in Setup. The ATAPI specification recommends that ATAPI devices be configured as shown in Table 31.

Table 31. Recommendations for Configuring an ATAPI Device

Primary Cable Secondary Cable

Configuration Drive 0 Drive 1 Drive 0 Drive 1 Normal, no ATAPI ATA Disk and CD-ROM for enhanced IDE systems ATA ATAPI Legacy IDE system with only one cable ATA ATAPI Enhanced IDE with CD-ROM and a tape or two CD-ROMs ATA ATAPI ATAPI

JN440BX Motherboard Technical Product Specification

3.5 ISA Plug and Play

If Plug and Play operating system (see Section 4.3) is selected in Setup, the BIOS autoconfigures only ISA Plug and Play cards that are required for booting (IPL devices). If Plug and Play operating system is not selected in Setup, the BIOS autoconfigures all Plug and Play ISA cards.

3.6 ISA Legacy Devices

Since ISA legacy devices are not autoconfigurable, the resources for them must be reserved. Resources can be reserved in the Setup program.

3.7 Desktop Management Interface (DMI)

Desktop Management Interface (DMI) is an interface for managing computers in an enterprise environment. The main component of DMI is the management information format (MIF) database, which contains information about the computing system and its components. Using DMI, a system administrator can obtain the system types, capabilities, operational status, and installation dates for system components. The MIF database defines the data and provides the method for accessing this information. The BIOS enables applications such as Intel Client Manager to use DMI. The BIOS stores and reports the following DMI information:

BIOS data, such as the BIOS revision level

Fixed-system data, such as peripherals, serial numbers, and asset tags

Resource data, such as memory size, cache size, and processor speed

Dynamic data, such as event detection and error logging

LANDesk

OEMs can use a utility that programs flash memory so the BIOS can report on system and chassis information. This utility is available through Intel sales offices. See Section 6.1 for information about contacting a local Intel sales office. See Section 6.2 for information about the latest DMI specification.

DMI does not work directly under non-Plug and Play operating systems (for example, Windows NT). However, the BIOS supports a DMI table interface for such operating systems. Using this support, a DMI service-level application running on a non-Plug and Play operating systems can access the DMI BIOS information.

Overview of BIOS Features

3.8 Advanced Power Management (APM)

The BIOS supports APM and standby mode. See Section 6.2 for the version of the APM specification that is supported. The energy saving standby mode can be initiated in the following ways:

Time-out period specified in Setup

Suspend/resume switch connected to the front panel sleep connector

From the operating system, such as the Suspend menu item in Windows 95

In standby mode, the motherboard reduces power consumption by using SMM capabilities,

†

spinning down hard disk drives, and reducing power to, or turning off, VESA monitors. Power-management mode can be enabled or disabled in Setup (see Section 4).

While in standby mode, the system retains the ability to respond to external interrupts and service requests, such as incoming faxes or network messages. Any keyboard or mouse activity brings the system out of standby mode and immediately restores power to the monitor.

The BIOS enables APM by default; but the operating system must support an APM driver for the power-management features to work. For example, Windows 95 supports the power-management features upon detecting that APM is enabled in the BIOS.

DPMS-compliant

3.9 Advanced Configuration and Power Interface (ACPI)

ACPI gives the operating system direct control over the power management and Plug and Play functions of a computer. ACPI requires an ACPI-aware operating system such as Windows NT 5.0 or Windows 98. ACPI features include:

Plug and Play (including bus and device enumeration) and Advanced Power Management (APM) functionality normally contained in the BIOS

Power management control of individual devices, add-in boards (some add-in boards may require an ACPI-aware driver), video displays, and hard disk drives

Methods for achieving less than 30-watt system operation in the Power On Suspend sleeping state, and less than 5-watt system operation in the Suspend to Disk sleeping state

A Soft-off feature that enables the operating system to power off the computer

Support for multiple wake up events (see Table 34)

Support for a front panel power and sleep mode switch. Table 32 describes the system states based on how long the switch is pressed

Table 32. Effects of Pressing the Power Switch

…and the power switch is

If the system is in this state…

Off Less than four seconds Power on to G0 state On Less than four seconds Power off to G2 state On More than four seconds Power off to G2 state Sleep Less than four seconds Wake up to G0 state

pressed for …the system enters this state

JN440BX Motherboard Technical Product Specification

3.9.1 System States and Power States

Under ACPI, the operating system directs all system and device power state transitions. The operating system puts devices in and out of low-power states based on user preferences and knowledge of how devices are being used by applications. Devices that are not being used can be turned off. The operating system uses information from applications and user settings to put the system as a whole into a low-power state. Table 33 lists the power states supported by the motherboard along with the associated system power targets. See the ACPI specification for a complete description of the various system and power states.

Table 33. Power States and Targeted System Power

Global States Sleeping States Processor States Device States Targeted System Power *

G0 - working state

G1 - sleeping state

G2/S5 S5 - Soft off.

G3 -mechanical off.

The power supply switch is off.

* Total system power is dependent on the system configuration, including add-in boards and peripherals powered by the

system chassis’ power supply. ** Dependent on the standby power consumption of wake-up devices used in the system. *** S3 and S4BIOS states are entered at the same time to preserve system context. In normal operation, the system

restores context from RAM. In case of power failure, the system restores context from disk.

S0 - working C0 - working D0 - working

state

S1 - Processor stopped

S2 - power on suspend

S3 - suspend to RAM. Not supported.

S4BIOS suspend to disk***. Not supported.

Context not saved. Cold boot is required.

No power to the system.

C1 - stop grant D1, D2, D3-

device specification specific

C2 - clock stopped

No power D3 - no power

D2, D3- device specification specific

except for wake up logic

for wake up logic, except when provided by battery or external source

Full power > 60 W

5 W < power < 30 W

power < 5 W **

No power to the system so that service can be performed.

Overview of BIOS Features

3.9.2 Wake Up Devices and Events

The table below describes which devices or specific events can wake the computer from specific states. Sleeping states S3, S4BIOS, and S5 are the same for the wake up events.

Table 34. Wake Up Devices and Events

These devices/events can wake up the computer… …from this state

Power switch S1, S2, S3, S4BIOS, S5 RTC alarm S1, S2, S3, S4BIOS, S5 LAN S1, S2, S3, S4BIOS, S5 Modem S1, S2, S3, S4BIOS, S5 Thermal event S1, S2, S3, S4BIOS IR command S1, S2 Voice S1, S2 USB S1, S2 PS/2 keyboard S1, S2 PS/2 mouse S1, S2 IEEE-1394.95/a/b high-speed

serial bus

none

3.9.3 Plug and Play

In addition to power management, ACPI provides controls and information so that the operating system can facilitate Plug and Play device enumeration and configuration. ACPI is used only to enumerate and configure motherboard devices that do not have other hardware standards for enumeration and configuration. PCI devices on the motherboard, for example, are not enumerated by ACPI.

3.9.4 BIOS Support

The BIOS supports both APM and ACPI. If the board is used with an ACPI-aware operating, the BIOS provides ACPI support. Otherwise, it defaults to APM support.

3.10 Language Support

Five languages will be available: American English, German, Italian, French, and Spanish. The BIOS includes extensions to support the Kanji character set and other non-ASCII character sets. Translations of other languages may become available at a later date.

The default language is American English, which is always present unless another language is programmed into the BIOS using the flash memory update utility. See Section 3.1 for information about the BIOS update utility.

JN440BX Motherboard Technical Product Specification

3.11 Boot Options

In the Setup program, the user can choose to boot from a diskette drive, hard disk drive, CD-ROM, or the network. The default setting is for the diskette drive to be the primary boot device and the hard disk drive to be the secondary boot device. By default the third and fourth devices are disabled.

Booting from CD-ROM is supported in compliance to the El Torito bootable CD-ROM format specification. See Section 6.2 for information about the El Torito specification. Under the Boot menu in the Setup program, CD-ROM is listed as a boot device. Boot devices are defined in priority order. If the CD-ROM is selected as the boot device, it must be the first device.

The network can be selected as a boot device. This selection allows booting from a network add-in card with a remote boot ROM installed.

3.12 OEM Logo or Scan Area

A 4 KB flash-memory user area at memory location FFFF8000h-FFFF8FFFh is for displaying a custom OEM logo during POST. A utility is available from the Intel web site (see Section 6.1) to assist with installing a logo into the flash memory. Contact Intel customer support for further information. See Section 6.1 for information on contacting Intel customer support.

3.13 USB Legacy Support

USB legacy support enables USB keyboards and mice to be used although no operating system drivers are in place. By default, USB legacy support is disabled. USB Legacy support is for use in accessing BIOS Setup and the installation of a USB aware operating system only.

This sequence describes how USB legacy support operates in the default (disabled) mode.

1. When you power up the computer, USB legacy support is disabled.

2. POST begins.

3. USB legacy support is temporarily enabled by the BIOS. This allows you to use a USB

keyboard to enter the Setup program or the maintenance mode.

4. POST completes and disables USB legacy support (unless it was set to Enabled while in

Setup).

5. The operating system loads. While the operating system is loading, USB keyboards and mice

are not recognized. After the operating system loads the USB drivers, the USB devices are

recognized. To install a USB aware operating system, enable USB Legacy support in BIOS Setup and follow

the operating system’s installation instructions. Once the operating system is installed and the USB drivers configured, USB Legacy Support is no longer used. USB Legacy Support can be left enabled in BIOS Setup if needed.

Overview of BIOS Features

Notes on using USB legacy support:

If USB legacy support is enabled, don't mix USB and PS/2 keyboards and mice. For example,

don't use a PS/2 keyboard with a USB mouse, or a USB keyboard and a PS/2 mouse.

It is not recommended to use USB devices with an operating system that does not support

USB. USB legacy does not support the use of USB devices in a non USB operating system.

USB legacy support is for keyboards and mice only. Hubs and other USB devices are not

supported in this special mode.

3.14 BIOS Setup Access

Access to the Setup program can be restricted using passwords. User and supervisor passwords can be set using the Security menu in Setup. The default is no passwords enabled. See Section 4.4 for information about setting user and supervisor passwords.

3.15 Recovering BIOS Data

Some types of failure can destroy the BIOS. For example, the data can be lost if a power outage occurs while the BIOS is being updated in flash memory. The BIOS can be recovered from a diskette using the BIOS recovery mode (see Section 1.15.3).

To create a BIOS recovery diskette, a bootable diskette must be created and the recovery files copied to it. The recovery files are available from Intel, contact Intel customer support for further information. See Section 6.1 for information on contacting Intel customer support.

JN440BX Motherboard Technical Product Specification

4 BIOS Setup Program

The Setup program is for viewing and changing the BIOS settings for a computer. Setup is accessed by pressing the <F2> key after the Power-On Self Test (POST) memory test begins and before the operating system boot begins.

Table 35 shows the menus available from the menu bar at the top of the Setup screen.

Table 35. Setup Menu Bar

Setup Menu Screen Description

Maintenance Specifies the processor speed and clears the Setup passwords. This

menu is only available in configure mode. Refer to Section 1.15 for

information about configure mode. Main Allocates resources for hardware components. Advanced Specifies advanced features available through the chipset. Security Specifies passwords and security features. Power Specifies power management features. Boot Specifies boot options and power supply controls. Exit Saves or discards changes to the Setup program options.

Table 36 shows the function keys available for menu screens.

Table 36. Setup Function Keys

Setup Key Description

<F1> or <Alt-H> Brings up a help screen for the current item. <Esc> Exits the menu. <m> or <o> Selects a different menu screen. <n> or <p> Moves cursor up or down. <Home> or <End> Moves cursor to top or bottom of the window. <PgUp> or <PgDn> Moves cursor to top or bottom of the window. <F5> or <-> Selects the previous value for a field. <F6> or <+> or <Space> Selects the next value for a field. <F9> Load the default configuration values for the current menu. <F10> Save the current values and exit Setup. <Enter> Executes command or selects the submenu.

JN440BX Motherboard Technical Product Specification

4.1 Maintenance Menu

This menu is for setting the processor speed and clearing the Setup passwords. Setup only displays this menu in configure mode. See Section 1.15 for information about setting configure mode.

Table 37. Maintenance Menu

Feature Options Description

Processor Speed (66 MHz Host Bus)

Processor Speed (100 MHz Host Bus)

Clear All Passwords No options Clears the user and administrative passwords

233 266 300 333 300 350

Specifies the processor speed in megahertz With a host bus operating at 66 MHz, the board supports processors

at the following speeds: 233, 266, 300, and 333 MHz

With a host bus operating at 100 MHz, the board supports processors at the following speeds: 300 and 333 MHz

4.2 Main Menu

This menu reports processor and memory information and is for configuring the system date, system time, floppy options, and IDE devices.

Table 38. Main Menu

Feature Options Description

BIOS Version No options Displays the version of the BIOS. Processor Type No options Displays processor type. Processor Speed No options Displays processor speed. Cache RAM No options Displays size of second-level cache. System Memory No options Displays the total amount of RAM on the motherboard. Memory Bank 0

Memory Bank 1 Memory Bank 2

Language

ECC Configuration

L2 Cache ECC Support

System Time Hour, minute, and

System Date Month, day, and year Specifies the current date.

No options Displays size and type of DIMM installed in each memory

bank.

English (US) (default)

Francais

Italiano

Deutch

Espanol

Non-ECC (default)

ECC

Enabled

Disabled (default)

second

Selects the default language used by the BIOS.

Specifies ECC memory operation.

If Enabled, allows error checking to occur on data accessed from L2 Cache.

Specifies the current time.

4.3 Advanced Menu

This menu is for setting advanced features that are available through the chipset.

Table 39. Advanced Menu

Feature Options Description

Plug & Play O/S No (default)

Yes

Reset Configuration Data No (default)

Yes

Numlock Auto (default)

On Off

Peripheral Configuration No options Configures peripheral ports and devices. When selected,

IDE Configuration No options Specifies type of connected IDE device. Floppy Configuration No options When selected, displays the Floppy Options submenu. DMI Event Logging No options Configures DMI Events Logging. When selected, displays

Video Configuration No options Configures video features. When selected, displays the

Resource Configuration No options Configures memory blocks and IRQs for legacy ISA devices.

Specifies if a Plug and Play operating system is being used.

lets the BIOS configure all devices.

Yes

lets the operating system configure Plug and Play devices. Not required with a Plug and Play operating system.

Clears the BIOS configuration data on the next boot.

Specifies the power on state of the Num Lock feature on the numeric keypad of the keyboard.

displays the Peripheral Configuration submenu.

the DMI Events Logging submenu.

Video Configuration submenu.

When selected, displays the Resource Configuration submenu.

BIOS Setup Program

JN440BX Motherboard Technical Product Specification

4.3.1 Peripheral Configuration Submenu

This submenu is used for configuring the computer peripherals.

Table 40. Peripheral Configuration Submenu

Feature Options Description

Serial port A

Base I/O address

Interrupt

Serial port B

Mode

Base I/O address

Interrupt

Parallel port

Disabled

Enabled

Auto (default)

3F8

2F8

3E8

2E8

IRQ 3

IRQ 4 (default)

Disabled

Enabled

Auto (default)

Normal (default)

IrDA

ASK-IR

3F8

2F8 (default)

3E8

2E8

IRQ 3 (default)

IRQ 4

Disabled

Enabled

Auto (default)

Configures serial port A.

Auto

assigns the first free COM port, normally COM1, the

address 3F8h, and the interrupt IRQ4. An * (asterisk) displayed next to an address indicates a

conflict with another device. Specifies the base I/O address for serial port A, if serial port A

is Enabled.

Specifies the interrupt for serial port A, if serial port A is Enabled.

Configures serial port B.

Auto

assigns the first free COM port, normally COM2, the

address 2F8h and the interrupt IRQ3. An * (asterisk) displayed next to an address indicates a

conflict with another device. If either serial port address is set, that address will not appear

in the list of options for the other serial port.

ATI mach32

If an active as an add-in card, the COM4, 2E8h address will not appear in the list of options for either serial port.

Specifies the mode for serial port B for normal (COM 2) or infrared applications. This option is not available if serial port B has been disabled.

Specifies the base I/O address for serial port B, if serial port B is Enabled.

Specifies the interrupt for serial port B, if serial port B is Enabled.

Configures the parallel port.

Auto

assigns LPT1 the address 378h and the interrupt IRQ7.

An * (asterisk) displayed next to an address indicates a conflict with another device.

†

or an

ATI mach64

†

video controller is

continued

BIOS Setup Program

Table 40. Peripheral Configuration Submenu

Feature Options Description

Mode

Base I/O address

Interrupt

Audio

LAN

Embedded PXE Support

Legacy USB Support

Output Only

Bi-directional (default)

EPP ECP

378

278

228

IRQ 5

IRQ 7

Disabled

xxEnabled (default)

Disabled

xxEnabled (default)

Disabled

xxEnabled (default)

Disabled (default)

Enabled

(continued)

Selects the mode for the parallel port. Not available if

the parallel port is disabled.

Output Only

Bi-directional

EPP

is Extended Parallel Port mode, a high-speed

bi - directional mode.

ECP

is Enhanced Capabilities Port mode, a high-speed

bi-directional mode.

Specifies the base I/O address for the parallel port, if the

parallel port is Enabled.

Specifies the interrupt for the parallel port, if the parallel

port is Enabled.

Enables or disables the onboard audio subsystem.

Enables or disables the onboard LAN device.

Enables or disables LANDesk service agent option.

Enables or disables USB legacy support.

(See Section 3.13 for more information.)

operates in AT†-compatible mode.

operates in PS/2-compatible mode.

4.3.2 IDE Configuration

Table 41. IDE Device Configuration

Feature Options Description

IDE Controller

Hard Disk Pre-Delay

Primary IDE Master No options Reports type of connected IDE device. When selected,

Primary IDE Slave No options Reports type of connected IDE device. When selected,

Secondary IDE Master No options Reports type of connected IDE device. When selected,

Secondary IDE Slave No options Reports type of connected IDE device. When selected,

Disabled

Primary

Secondary

Both (default)

xxDisabled (default)

3 Seconds

6 Seconds

9 Seconds

12 Seconds

15 Seconds

21 Seconds

30 Seconds

Specifies the integrated IDE controller.

Primary

Secondary

Both

Specifies the hard disk drive pre-delay.

displays the Primary IDE Master submenu.

displays the Primary IDE Slave submenu.

displays the Secondary IDE Master submenu.

displays the Secondary IDE Slave submenu.

enables only the Primary IDE Controller.

enables only the Secondary IDE Controller.

enables both IDE controllers.

JN440BX Motherboard Technical Product Specification

4.3.3 IDE Configuration Submenus

This submenu is for configuring IDE devices, including:

Primary IDE master

Primary IDE slave

Secondary IDE master

Secondary IDE slave

Table 42. IDE Configuration Submenus

Feature Options Description

Type

Maximum Capacity No options Reports the maximum capacity for the hard disk, if the

Multi-Sector Transfers

LBA Mode Control

Transfer Mode

Ultra DMA

Auto

None

ATAPI Removable

CD-ROM

IDE Removable

Other ATAPI

User

Disabled

2 Sectors

4 Sectors

8 Sectors

16 Sectors

Disabled Enabled

Standard

Fast PIO 1

Fast PIO 2

Fast PIO 3

Fast PIO 4

FPIO 3 / DMA 1

FPIO 4 / DMA 2

Disabled

Mode 0

Mode 1

Mode 2

Specifies the IDE configuration mode for IDE devices.

User

allows the cylinders, heads, and sectors fields to

be changed.

Auto

automatically fills in the values for the cylinders,

heads, and sectors fields.

type is User or Auto.

Specifies number of sectors per block for transfers from

the hard disk drive to memory.

Check the hard disk drive’s specifications for optimum

setting.

Enables or disables the LBA mode control.

Specifies the method for moving data to/from the drive.

Specifies the Ultra DMA mode for the drive.

The default values for these options is determined by the device being configured, as shown in the following table.

Table 43. Default Values By IDE Device Type

Primary IDE Master All other devices

Type Auto Auto Multi-Sector Transfers 16 Sectors Disabled LBA Mode Control Enabled Disabled Transfer Mode FPIO 4/DMA 2 Standard Ultra DMA Disabled Disabled

4.3.4 Floppy Options

This submenu is for configuring floppy drives.

Table 44. Floppy Options

Feature Options Description

Floppy Disk Controller

Diskette A:

Floppy Write Protect Disabled (default)

Disabled

Enabled (default)

Auto

Disabled

360 KB, 5¼

1.2 MB, 5¼

720 KB, 3½

1.44/1.25 MB, 3½

2.88 MB, 3½

Enabled

4.3.5 DMI Event Logging

(default)

BIOS Setup Program

Disables or enables the integrated floppy disk controller.

Specifies the capacity and physical size of diskette drive A.

Disables or enables write protect for the diskette drive.

This submenu is for configuring the DMI event logging features.

Table 45. DMI Event Logging Submenu

Feature Options Description

Event log capacity No options Indicates if there is space available in the event log. Event log validity No options Indicates if the contents of the event log are valid. View DMI event log [Enter] Displays the DMI event log. Clear all DMI event logs

Event Logging

ECC Event Logging

Mark DMI events as read

No (default)

Yes

Disabled

Enabled (default)

Disabled

Enabled (default)

[Enter] Marks all DMI events as read.

Clears the DMI event log after rebooting.

Enables logging of DMI events.

Enables logging of ECC events.

4.3.6 Video Configuration Submenu

This submenu is for configuring video features.

Table 46. Video Configuration Submenu

Feature Options Description

Palette Snooping

AGP Aperture Size

xxDisabled (default)

Enabled

xx64 MB (default)

256 MB

Controls the ability of a primary PCI graphics controller to share a common palette with an ISA add-in video card.

Specifies the aperture size for the A.G.P. video controller.

JN440BX Motherboard Technical Product Specification

4.3.7 Resource Configuration Submenu

This submenu is for configuring the memory and interrupts.

Table 47. Resource Configuration Submenu

Feature Options Description

Memory Reservation

IRQ Reservation

C800 - CBFF Available (default) | Reserved

CC00- CFFF Available (default) | Reserved

D000 - D3FF Available (default) | Reserved

D400 - D7FF Available (default) | Reserved

D800 - DBFF Available (default) | Reserved

DC00 - DFFF Available (default) | Reserved

IRQ3 Available (default) | Reserved

IRQ4 Available (default) | Reserved

IRQ5 Available (default) | Reserved

IRQ7 Available (default) | Reserved

IRQ10 Available (default) | Reserved

IRQ11 Available (default) | Reserved

Reserves specific upper memory blocks for use by legacy ISA devices.

Reserves specific IRQs for use by legacy ISA devices.

An * (asterisk) displayed next to an IRQ indicates an IRQ conflict.

4.4 Security Menu

This menu is for setting passwords and security features.

Table 48. Security Menu

Feature Options Description

User Password Is No options Reports if there is a user password set. Administrative Password Is No options Reports if there is a administrative

Set User Password Password can be up to seven

alphanumeric characters.

Set Administrative Password Password can be up to seven

alphanumeric characters. Clear User No Options Clears the user password. User Setup Access

Unattended Start

None

View Only (default)

Limited Access

Full

Disabled (default)

Enabled

password set. Specifies the user password.

Specifies the administrative password.

Establishes the user access level.

Enables the unattended start feature. When enabled, the computer boots, but the keyboard is locked. The user must enter a password to unlock the computer or boot from a floppy diskette.

4.5 Power Menu

This menu is for setting power management features.

Table 49. Power Menu

Feature Options Description

Power Management

Inactivity Timer

Hard Drive

VESA Video Power Down

Disabled

Enabled (default)

Off (default)

1 Minute

5 Minutes

10 Minutes

20 Minutes

30 Minutes

60 Minutes

120 Minutes

Disabled

Enabled (default)

Disabled

x xxStandby (default)

Suspend

Sleep

BIOS Setup Program

Enables or disables the BIOS power management feature.

Specifies the amount of time before the computer enters standby mode.

Enables power management for hard disks during standby and suspend modes.

Specifies power management for video during standby and suspend modes.

4.6 Boot Menu

This menu is for setting the boot features and the boot sequence.

Table 50. Boot Menu

Feature Options Description

Quick Boot Mode

Scan User Flash Area

After Power Failure

On Modem Ring

On LAN

Disabled

Enabled (default)

Disabled (default)

Enabled

Stay Off

Last State (default)

Power On

Stay Off

Power On (default)

Stay Off

Power On (default)

Enables the computer to boot without running certain POST tests.

Enables the BIOS to scan the flash memory for user binary files that are executed at boot time.

Specifies the mode of operation if an AC/Power loss occurs.

Power On Stay Off

pressed.

Last State

power loss occurred. Specifies how the computer responds to an incoming

call on an installed modem when the power is off. Specifies how the computer responds to a LAN

wakeup event when the power is off.

restores power to the computer.

keeps the power off until the power button is

restores the previous power state before

continued

JN440BX Motherboard Technical Product Specification

Table 50. Boot Menu

Feature Options Description

On PME

Hard Drive Pre-delay

First Boot Device Second Boot Device Third Boot Device Fourth Boot Device Fifth Boot Device

Hard Drive No options Lists available hard disk drives. When selected,

Removable Devices No options Lists available removable devices. When selected,

(continued)

xxStay Off (default)

Power On

Disabled (default)

3 Seconds

6 Seconds

9 Seconds

12 Seconds

15 Seconds

21 Seconds

30 Seconds

Removable devices

Hard Drive

ATAPI CD-ROM Drive

Network Boot

LANDesk Service Agent

Specifies how the computer responds to a PME wakeup event when the power is off.

Sets the hard disk drive pre-delay. When enabled, this option causes the BIOS to wait the specified time before it accesses the first hard drive. If the computer contains a hard drive and the drive type is not displayed during boot-up, but the drive type is displayed following a warm boot (<Ctrl><Alt><Del>), the hard drive may need more time before it is able to communicate with the controller. Setting a pre-delay provides additional time for the hard drive to initialize.

Specifies the boot sequence from the available devices. To specify boot sequence:

1. Select the boot device with <n> or <p>.

2. Press <+> to move the device up the list or <-> to move the device down the list.

The operating system assigns a drive letter to each boot device in the order listed. Changing the order of the devices changes the drive lettering.

displays the Hard Drive submenu.

displays the Removable Devices submenu.

4.6.1 Hard Drive Submenu

This submenu is for configuring the boot sequence for hard disk drives.

Table 51. Hard Drive Submenu

Options Description

Bootable Add in Card Specifies the boot sequence for the hard disk drives attached to the computer. To

specify boot sequence:

1. Select the boot device with <n> or <p>.

2. Press <+> to move the device up the list or <-> to move the device down the list.

The operating system assigns a drive letter to each device in the order listed. Changing the order of the devices changes the drive lettering.

4.6.2 Removable Devices Submenu

This submenu is for configuring the boot sequence for removable devices.

Table 52. Removable Devices Submenu

Options Description

Legacy Floppy Drives Specifies the boot sequence for the removable devices attached to the computer.

To specify boot sequence:

1. Select the boot device with <n> or <p>.

2. Press <+> to move the device up the list or <-> to move the device down the list.

The operating system assigns a drive letter to each device in the order listed. Changing the order of the devices changes the drive lettering.

4.7 Exit Menu

This menu is for exiting the Setup program, saving changes, and loading and saving defaults.

BIOS Setup Program

Table 53. Exit Menu

Feature Description

Exit Saving Changes Exits and saves the changes in CMOS SRAM. Exit Discarding Changes Exits without saving any changes made in Setup. Load Setup Defaults Loads the factory default values for all the Setup options. Load Custom Defaults Loads the custom defaults for Setup options. Save Custom Defaults Saves the current values as custom defaults. Normally, the BIOS reads the

Setup values from flash memory. If this memory is corrupted, the BIOS reads the custom defaults. If no custom defaults are set, the BIOS reads the factory defaults.

Discard Changes Discards changes without exiting Setup. The option values present when the

computer was turned on are used.

JN440BX Motherboard Technical Product Specification

5 Error Messages and Beep Codes

5.1 BIOS Error Messages

Table 54. BIOS Error Messages

Error Message Explanation

Diskette drive A error Drive A: is present but fails the POST diskette tests. Ensure that the drive

controller is enabled, the drive is correctly installed, and the drive type is properly defined in Setup.

Extended RAM Failed at

nnnn

offset: Failing Bits:

Fixed Disk 0 Failure or Fixed Disk 1 Failure or Fixed Disk Controller Failure

Incorrect Drive A type - run SETUP

Invalid NVRAM media type Problem with NVRAM (CMOS) access. Keyboard controller error The keyboard controller failed test. Try replacing the keyboard. Keyboard error Keyboard not working. Keyboard error nn BIOS discovered a stuck key and displays the scan code nn for the stuck key. Keyboard locked - Unlock

key switch Monitor type does not match

CMOS - Run SETUP Operating system not found Operating system cannot be located on either drive A or drive C. Enter Setup

Parity Check 1 Parity error found in the system bus. BIOS attempts to locate the address

Parity Check 2 Parity error found in the I/O bus. BIOS attempts to locate the address and

Press <F1> to resume, <F2> to Setup

nnnn

Extended memory not working or not configured properly at offset

The hexadecimal number (System, Extended, or Shadow memory) that failed the memory test. Each 1 in the map indicates a failed bit.

Fixed disk is not working or not configured properly. Check to see if fixed disk is installed properly. Run Setup be sure the fixed-disk type is correctly identified and enabled.

Type of floppy drive for drive A: not correctly identified in Setup.

Unlock the system to proceed.

Monitor type not correctly identified in Setup.

and see if fixed disk and drive A are properly identified.

and display it on the screen. If it cannot locate the address, it displays ????.

display it on the screen. If it cannot locate the address, it displays ????. Displayed after any recoverable error message. Press <F1> to start the boot

process or <F2> to enter Setup and change any settings.

nnnn

is a map of the bits at the RAM address

nnnn

Real time clock error Real-time clock fails BIOS test. May require motherboard repair.

continued

JN440BX Motherboard Technical Product Specification

Table 54. BIOS Error Messages

Error Message Explanation

Shadow RAM Failed at offset:

nnnn

System battery is dead Replace and run SETUP

System cache error - Cache disabled

System CMOS checksum bad run SETUP

System RAM Failed at offset:

nnnn

System timer error The timer test failed. Requires repair of system motherboard.

(continued)

Shadow RAM failed at offset was detected.

The CMOS clock battery indicator shows the battery is dead. Replace the battery and run Setup to reconfigure the system.

RAM cache failed the BIOS test. BIOS disabled the cache.

System CMOS RAM has been corrupted or modified incorrectly, perhaps by an application program that changes data stored in CMOS. Run Setup and reconfigure the system either by getting the default values and/or making your own selections.

System RAM failed at offset detected.

nnnn

of the 64 KB block at which the error

nnnn

of the 64 KB block at which the error was

5.2 Port 80h POST Codes

During the POST, the BIOS generates diagnostic progress codes (POST codes) to I/O port 80h. If the POST fails, execution stops and the last POST code generated is left at port 80h. This code is useful for determining the point where an error occurred.

Displaying the POST codes requires an add-in card (often called a POST card). The POST card can decode the port and display the contents on a medium such as a seven-segment display. These cards can be purchased from JDR Microdevices or other sources.

The following table provides the POST codes that can be generated by the BIOS. Some codes are repeated in the table because that code applies to more than one operation.

Table 55. Port 80h Codes

Code Description of POST Operation

02h Verify real mode 03h Disable non-maskable interrupt (NMI) 04h Get processor type 06h Initialize system hardware 08h Initialize chipset with initial POST values 09h Set IN POST flag 0Ah Initialize processor registers 0Bh Enable processor cache 0Ch Initialize caches to initial POST values 0Eh Initialize I/O component 0Fh Initialize the local bus IDE

continued

Error Messages and Beep Codes

Table 55. Port 80h Codes

Code Description of POST Operation Currently In Progress

10h Initialize power management 11h Load alternate registers with initial POST valuesnew 12h Restore processor control word during warm boot 13h Initialize PCI bus mastering devices 14h Initialize keyboard controller 16h BIOS ROM checksum 17h Initialize cache before memory autosize 18h 8254 timer initialization 1Ah 8237 DMA controller initialization 1Ch Reset programmable interrupt controller 20h Test DRAM refresh 22h Test keyboard controller 24h Set ES segment register to 4 GB 26h Enable A20 line 28h Autosize DRAM 29h Initialize POST memory manager 2Ah Clear 512 KB base RAM 2Ch RAM failure on address line 2Eh RAM failure on data bits 2Fh Enable cache before system BIOS shadow 30h RAM failure on data bits 32h Test processor bus-clock frequency 33h Initialize POST dispatch manager 34h Test CMOS RAM 35h Initialize alternate chipset registers 36h Warm start shut down 37h Reinitialize the chipset (MB only) 38h Shadow system BIOS ROM 39h Reinitialize the cache (MB only) 3Ah Autosize cache 3Ch Configure advanced chipset registers 3Dh Load alternate registers with CMOS valuesnew 40h Set Initial processor speed new 42h Initialize interrupt vectors 44h Initialize BIOS interrupts 45h POST device initialization 46h Check ROM copyright notice

(continued)

xxxx

of low byte of memory bus (See note on page 79)

xxxx

of high byte of memory bus (See note on page 79)

(See note on page 79)

continued

JN440BX Motherboard Technical Product Specification

Table 55. Port 80h Codes

Code Description of POST Operation Currently In Progress

47h Initialize manager for PCI option ROMs 48h Check video configuration against CMOS RAM data 49h Initialize PCI bus and devices 4Ah Initialize all video adapters in system 4Bh Display QuietBoot screen 4Ch Shadow video BIOS ROM 4Eh Display BIOS copyright notice 50h Display processor type and speed 51h Initialize EISA motherboard 52h Test keyboard 54h Set key click if enabled 56h Enable keyboard 58h Test for unexpected interrupts 59h Initialize POST display service 5Ah Display prompt "Press F2 to enter SETUP" 5Bh Disable processor cache 5Ch Test RAM between 512 and 640 KB 60h Test extended memory 62h Test extended memory address lines 64h Jump to UserPatch1 66h Configure advanced cache registers 67h Initialize multiprocessor APIC 68h Enable external and processor caches 69h Setup System Management Mode (SMM) area 6Ah Display external L2 cache size 6Ch Display shadow-area message 6Eh Display possible high address for UMB recovery 70h Display error messages 72h Check for configuration errors 74h Test real-time clock 76h Check for keyboard errors 7Ah Test for key lock on 7Ch Set up hardware interrupt vectors 7Eh Initialize coprocessor if present 80h Disable onboard Super I/O ports and IRQs 81h Late POST device initialization 82h Detect and install external RS232 ports 83h Configure non-MCD IDE controllers

(continued)

continued

Error Messages and Beep Codes

Table 55. Port 80h Codes

Code Description of POST Operation Currently In Progress

84h Detect and install external parallel ports 85h Initialize PC-compatible PnP ISA devices 86h Re-initialize onboard I/O ports 87h Configure motherboard configurable devices 88h Initialize BIOS Data Area 89h Enable Non-Maskable Interrupts (NMIs) 8Ah Initialize extended BIOS data area 8Bh Test and initialize PS/2 mouse 8Ch Initialize diskette controller 8Fh Determine number of ATA drives 90h Initialize hard-disk controllers 91h Initialize local-bus hard-disk controllers 92h Jump to UserPatch2 93h Build MPTABLE for multiprocessor boards 94h Disable A20 address line (Rel. 5.1 and earlier) 95h Install CD ROM for boot 96h Clear huge ES segment register 97h Fix up multiprocessor table 98h Search for option ROMs 99h Check for SMART Drive 9Ah Shadow option ROMs 9Ch Set up power management 9Eh Enable hardware interrupts 9Fh Determine number of ATA and SCSI drives A0h Set time of day A2h Check key lock A4h Initialize typematic rate A8h Erase F2 prompt Aah Scan for F2 key stroke Ach Enter SETUP Aeh Clear IN POST flag B0h Check for errors B2h POST done - prepare to boot operating system B4h One short beep before boot B5h Terminate QuietBoot B6h Check password (optional) B8h Clear global descriptor table B9h Clean up all graphics

(continued)

continued

JN440BX Motherboard Technical Product Specification

Table 55. Port 80h Codes

Code Description of POST Operation Currently In Progress

Bah Initialize DMI parameters BBh Initialize PnP Option ROMs BCh Clear parity checkers BDh Display MultiBoot menu Beh Clear screen (optional) BFh Check virus and backup reminders C0h Try to boot with INT 19h C1h Initialize POST Error Manager (PEM) C2h Initialize error logging C3h Initialize error display function C4h Initialize system error handler E0h Initialize the chipset E1h Initialize the bridge E2h Initialize the processor E3h Initialize system timer E4h Initialize system I/O E5h Check force recovery boot E6h Checksum BIOS ROM E7h Go to BIOS E8h Set huge segment E9h Initialize multiprocessor Eah Initialize OEM special code Ebh Initialize PIC and DMA Ech Initialize memory type Edh Initialize memory size Eeh Shadow boot block Efh System memory test F0h Initialize interrupt vectors F1h Initialize runtime clock F2h Initialize video F3h Initialize beeper F4h Initialize boot F5h Clear huge segment F6h Boot to mini-DOS F7h Boot to full DOS

(continued)

Error Messages and Beep Codes

NOTE

✏

If the BIOS detects error 2C, 2E, or 30 (base 512 K RAM error), it displays an additional wordbitmap (xxxx) indicating the address line or bits that failed. For example, "2C 0002" means address line 1 (bit one set) has failed. "2E 1020" means data bits 12 and 5 (bits 12 and 5 set) have failed in the lower 16 bits. The BIOS also sends the bitmap to the port-80 LED display. It first displays the check point code, followed by a delay, the high-order byte, another delay, and then the low-order byte of the error. It repeats this sequence continuously.

5.3 BIOS Beep Codes

Whenever a recoverable error occurs during power-on self test (POST), the BIOS displays an error message describing the problem. The BIOS also issues a beep code (one long tone followed by two short tones) during POST if the video configuration fails (a faulty video card or no card installed) or if an external ROM module does not properly checksum to zero.

An external ROM module (for example, a video BIOS) can also issue audible errors, usually consisting of one long tone followed by a series of short tones. For more information on the beep codes issued, check the documentation for that external device.

There are several POST routines that issue a POST terminal error and shut down the system if they fail. Before shutting down the system, the terminal-error handler issues a beep code signifying the test point error, writes the error to I/O port 80h, attempts to initialize the video and writes the error in the upper left corner of the screen (using both monochrome and color adapters).

If POST completes normally, the BIOS issues one short beep before passing control to the operating system.

Table 56. Beep Codes

Beeps 80h Code Description

1 B4h One short beep before boot 1-2 98h Search for option ROMs 1-2-2-3 16h BIOS ROM checksum 1-3-1-1 20h Test DRAM refresh 1-3-1-3 22h Test 8742 keyboard controller 1-3-4-1 2Ch RAM failure on address line 1-3-4-3 2Eh RAM failure on data bits 1-4-1-1 30h RAM failure on data bits 2-1-2-3 46h Check ROM copyright notice 2-2-3-1 58h Test for unexpected interrupts

xxxx

(See note on page 79)

xxxx

of low byte of memory bus (See note on page 79)

xxxx

of high byte of memory bus (See note on page 79)

JN440BX Motherboard Technical Product Specification

6 Specifications and Customer Support

6.1 Online Support

You will find information about Intel boards under “Product Info” or “Customer Support” at the following World Wide Web site:

http://www.intel.com/

6.2 Specifications

The motherboard complies with the following specifications:

Table 57. Specifications

Specification Description Revision Level

A.G.P. Accelerated Graphics Port

Interface Specification

APM Advanced Power Management

BIOS interface specification

ATA-3 Information Technology - AT

Attachment-3 Interface

ATAPI ATA Packet Interface for

CD-ROMs

Revision 1.0, August, 1996, Intel Corporation. The specification is available through the Accelerated Graphics Implementers Forum at:

http://www.agpforum.org/ Revision 1.2, February, 1996

Intel Corporation, Microsoft Corporation X3T10/2008D Revision 6

ATA Anonymous FTP Site: fission.dt.wdc.com SFF-8020i Revision 2.5

(SFF) Fax Access: (408) 741-1600

DMI Desktop Management Interface

BIOS specification

El Torito Bootable CD-ROM format

specification

EPP Enhanced Parallel Port IEEE 1284 standard, Mode [1 or 2], v1.7 IrDA Serial Infrared Physical Layer

Link specification

Version 2.1, June 16, 1997 American Megatrends Inc., Award Software International Inc., Dell Computer Corporation, Intel Corporation, Phoenix Technologies Ltd., SystemSoft Corporation

http://www.ptltd.com/techs/specs.html Version 1.0, January 25, 1995

Phoenix Technologies Ltd., IBM Corporation. The El Torito specification is available on the Phoenix Web site

http://www.ptltd.com/techs/specs.html

Version 1.1, October 17, 1995 Infrared Data Association. Phone: (510) 943-6546 Fax: (510) 943-5600

E-mail: irda@netcom.com

continued

JN440BX Motherboard Technical Product Specification

Table 57. Specifications

NLX NLX form factor specification Revision 1.2, February 1997, Intel Corporation

NLX Power Supply

PCI PCI Local Bus specification Revision 2.1, June 1, 1995, PCI Special Interest Group

Phoenix BIOS PhoenixBIOS Revision 4.0, February 27, 1997

Plug and Play Plug and Play BIOS

SDRAM DIMMs (64-and 72-bit)

SDRAM DIMMs (64- and 72-bit)

UHCI Universal Host Controller

NLX Power Supply Recommendations

specification

PC SDRAM Unbuffered DIMM specification PC SDRAM DIMM Specification PC Serial Presence Detect (SPD) Specification

PC SDRAM Unbuffered DIMM specification

Interface

(continued)

The specification is available at: http://www.teleport.com/~nlx/ Revision 1.1, May 1997, Intel Corporation

The recommendation is available at: http://www.teleport.com/~nlx/

http://www.pcisig.com/

Phoenix Technologies Ltd. Version 1.0a, May 5, 1994

Compaq Computer Corporation, Phoenix Technologies Ltd., Intel Corporation

Revision 1.0, February, 1998, Intel Corporation Revision 1.5, November, 1997, Intel Corporation

Revision 1.2A, December, 1997

Revision 0.9, October 22, 1997, Intel Corporation

Design Guide Revision 1.1, March 1996 Intel Corporation. The specification is available at:

http://www.usb.org

USB Universal serial bus

specification

Revision 1.0, January 15, 1996 Compaq Computer Corporation, Digital Equipment Corporation, IBM PC Company, Intel Corporation, Microsoft Corporation, NEC, Northern Telecom

http://www.intel.com/

This is a blank page

Intel JN440BX User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Revision History

Contents

1 Motherboard Description

1.7.3 Accelerated Graphics Port (A.G.P.)

1.7.4 Universal Serial Bus (USB)

1.7.6 Real-Time Clock, CMOS SRAM, and Battery

1.8.1 Keyboard and Mouse Interface

1.8.3 Diskette Drive Controller

Crystal Semiconductor CS4235 audio codec

1.9.3 Audio Drivers and Utilities

1.10.1 ATI Rage Pro Turbo 2X Graphics Controller

1.12.2 Alert On LAN Component

1.20.1 Product Certification Markings

2 Motherboard Resources

Table 25. DMA Channels

Table 26. I/O Map

Table 27. PCI Configuration Space Map

Table 28. Interrupts

Table 29. PCI Interrupt Routing Map

3 Overview of BIOS Features

3.9.1 System States and Power States

3.9.2 Wake Up Devices and Events

3.9.3 Plug and Play

4 BIOS Setup Program

Table 37. Maintenance Menu

Table 38. Main Menu

Table 39. Advanced Menu

4.3.1 Peripheral Configuration Submenu

4.3.3 IDE Configuration Submenus

Table 44. Floppy Options

4.3.5 DMI Event Logging

4.3.6 Video Configuration Submenu

4.3.7 Resource Configuration Submenu

Table 48. Security Menu

Table 49. Power Menu

Table 50. Boot Menu

4.6.1 Hard Drive Submenu

4.6.2 Removable Devices Submenu

Table 53. Exit Menu

5 Error Messages and Beep Codes

Table 54. BIOS Error Messages

6 Specifications and Customer Support

Table 57. Specifications