Intel DK440LX User Manual

DK440LX Motherboard

Technical Product Specification

October 1997 Order Number 682717-001

The DK440LX motherboard may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are documented in the DK440LX Motherboard Specification Update.

Revision History

Revision Revision History Date

-001 Release -001 of the DK440LX Motherboard Technical Product Specification

This product specification applies only to standard DK440LX motherboards with BIOS identifier 4D4KL0x0.86A.

Changes to this specification will be published in the DK440LX 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.

October 1997

Intel retains the right to make changes to specifications and product descriptions at any time, without notice. The DK440LX 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 7641 Mt. Prospect, IL 60056-7641

or call in North America 1-800-879-4683, Europe 44-0-1793-431-155, France 44-0-1793-421-777, Germany 44-0-1793-421-333, other Countries 708-296-9333.

†

Third-party brands and names are the property of their respective owners.

††

Wake on LAN is a trademark of IBM Corporation.

1 Motherboard Description

1.1 Overview......................................................................................................................9

1.2 Manufacturing Subsystem Options ............................................................................11

1.3 Motherboard Components..........................................................................................12

1.4 Custom Form Factor ..................................................................................................14

1.5 I/O Shield ...................................................................................................................15

1.6 Processor...................................................................................................................16

1.6.1 Processor Packaging...................................................................................16

1.6.2 Second Level Cache....................................................................................16

1.6.3 Processor Upgrades....................................................................................16

1.7 Memory......................................................................................................................17

1.7.1 Main Memory...............................................................................................17

1.7.2 SDRAM........................................................................................................18

1.7.3 ECC Memory ...............................................................................................18

1.8 Chipset.......................................................................................................................18

1.8.1 Intel 82443LX PCI/A.G.P. Controller (PAC).................................................18

1.8.2 Intel 82371AB PCI ISA IDE Xcelerator (PIIX4)............................................19

1.8.3 Intel 82093AA I/O Advanced Programmable Interrupt Controller (IOAPIC).20

1.8.4 Accelerated Graphics Port (A.G.P.).............................................................20

1.8.5 Universal Serial Bus (USB)..........................................................................20

1.8.6 IDE Support.................................................................................................21

1.8.7 Real-Time Clock, CMOS SRAM, and Battery ..............................................21

1.9 SuperI/O Controller ....................................................................................................22

1.9.1 Serial Ports ..................................................................................................22

1.9.2 Parallel Port .................................................................................................22

1.9.3 Floppy Controller..........................................................................................23

1.9.4 Keyboard and Mouse Interface....................................................................23

1.10 Audio Subsystem.......................................................................................................24

1.10.1 Audio Subsystem Performance....................................................................25

1.10.2 Audio Drivers and Utilities............................................................................25

1.10.3 Audio Connectors ........................................................................................25

1.10.4 Hardware Wavetable Support......................................................................26

1.11 Hardware Monitor Subsystem....................................................................................26

1.12 EtherExpress PRO/100WfM PCI LAN Subsystem...................................................27

1.12.1 Intel 82557 LAN Controller...........................................................................28

1.12.2 10 / 100 Mbit/sec Physical Layer Interface ..................................................28

1.12.3 Wake on LAN ASIC .....................................................................................28

1.12.4 LAN Subsystem Software............................................................................29

1.13 Wake on LAN Header ................................................................................................29

1.14 Wake on Modem........................................................................................................29

1.15 SCSI Subsystem........................................................................................................30

1.15.1 SCSI Drivers and Utilities.............................................................................30

1.15.2 SCSI Interface .............................................................................................30

1.15.3 SCSI Bus.....................................................................................................30

1.15.4 SCSI

1.15.5 Adaptec RAID

1.16 Motherboard Connectors............................................................................................34

1.16.1 Power Supply Connector.............................................................................43

1.16.2 Auxiliary Power Supply Connector...............................................................43

1.16.3 Front Panel Connectors...............................................................................44

1.16.4 Back Panel Connectors ...............................................................................47

1.16.5 Add-in Board Expansion Connectors...........................................................50

1.17 Connector Part Numbers............................................................................................53

1.18 Jumper Settings.........................................................................................................55

1.18.1 Normal Mode ...............................................................................................56

1.18.2 Configure Mode ...........................................................................................56

1.18.3 Recovery Mode............................................................................................56

1.19 Reliability....................................................................................................................57

1.20 Environmental Specifications.....................................................................................57

1.21 Power Consumption...................................................................................................58

1.22 Power Supply Considerations....................................................................................58

1.23 Thermal Considerations.............................................................................................59

1.24 Regulatory Compliance..............................................................................................59

1.24.1 Safety...........................................................................................................59

1.24.2 Electromagnetic Compatibility (EMC)...........................................................60

1.24.3 Product Certification Markings.....................................................................60

Select

and SCSI Disk Utilities..............................................................33

........................................................................................33

port

2 Motherboard Resources

2.1 Memory Map ..............................................................................................................61

2.2 DMA Channels...........................................................................................................61

2.3 I/O Map ......................................................................................................................61

2.4 PCI Configuration Space Map....................................................................................64

2.5 Interrupts....................................................................................................................64

2.6 PCI Interrupt Routing Map..........................................................................................65

3 Overview of BIOS Features

3.1 BIOS Upgrades..........................................................................................................67

3.2 BIOS Flash Memory Organization..............................................................................68

3.3 Plug and Play: PCI Autoconfiguration.......................................................................68

3.4 PCI IDE Support.........................................................................................................69

3.5 ISA Plug and Play......................................................................................................69

3.6 ISA Legacy Devices...................................................................................................69

3.7 Desktop Management Interface (DMI) .......................................................................70

3.8 Advanced Power Management (APM).......................................................................70

3.9 Language Support ....................................................................................................71

3.10 Boot Options ..............................................................................................................71

3.11 OEM Logo or Scan Area............................................................................................71

3.12 USB Legacy Support..................................................................................................71

3.13 BIOS Security Features..............................................................................................72

3.14 Recovering BIOS Data...............................................................................................73

4 BIOS Setup Program

4.1 Maintenance Menu.....................................................................................................76

4.2 Main Menu .................................................................................................................76

4.2.1 Floppy Options Submenu ............................................................................77

4.2.2 IDE Device Configuration Submenus...........................................................78

4.3 Advanced Menu.........................................................................................................79

4.3.1 Resource Configuration Submenu...............................................................80

4.3.2 Peripheral Configuration Submenu..............................................................81

4.3.3 Keyboard Configuration Submenu...............................................................83

4.3.4 Video Configuration Submenu.....................................................................83

4.3.5 DMI Event Logging Submenu......................................................................84

4.4 Security Menu............................................................................................................84

4.5 Power Menu...............................................................................................................85

4.6 Boot Menu..................................................................................................................86

4.6.1 Hard Drive Submenu ...................................................................................87

4.6.2 Removable Devices Submenu.....................................................................87

4.7 Exit Menu...................................................................................................................87

5 SCSI

5.1 SCSI

5.2 SCSI Disk Utilities ......................................................................................................94

Select

5.1.1 Main Screen.................................................................................................89

5.1.2 Configuration Menu......................................................................................89

5.1.3 Boot Device Configuration...........................................................................90

5.1.4 SCSI Device Configuration Menu ................................................................91

5.1.5 Advanced Configuration Options.................................................................92

5.2.1 Format Disk..................................................................................................94

5.2.2 Verify Disk Media.........................................................................................95

and SCSI Disk Utilities

Select

Utility.......................................................................................................89

6 Error Messages and Beep Codes

6.1 BIOS Error Messages ................................................................................................97

6.2 Port 80h POST Codes ...............................................................................................99

6.3 BIOS Beep Codes ....................................................................................................104

7 Specifications and Customer Support

7.1 Online Support.........................................................................................................105

7.2 Specifications...........................................................................................................105

Figures

1. Motherboard Components..........................................................................................12

2. Motherboard Dimensions...........................................................................................14

3. Back Panel I/O Shield Dimensions (ATX Chassis-Independent)................................15

4. Block Diagram of Hardware Management Subsystem...............................................27

5. LAN Subsystem Block Diagram .................................................................................28

6. Single-channel SCSI Bus Topology...........................................................................31

7. Motherboard Connectors............................................................................................34

8. Front Panel I/O Connectors........................................................................................44

9. Back Panel I/O Connectors........................................................................................47

10. Configuration Jumper Block.......................................................................................55

Tables

1. Supported DIMM Sizes ..............................................................................................17

2. Audio Subsystem Resources.....................................................................................24

3. Audio Subsystem Performance..................................................................................25

4. EtherExpress PRO/100WfM PCI Drivers....................................................................29

5. Chassis Security Header (J0A1) ................................................................................35

6. ATAPI CD Audio Connector (J1F1)............................................................................35

7. ATAPI-Style Telephony Connector (J0E1).................................................................35

8. ATAPI-Style Line In Connector (J0F2).......................................................................35

9. 2 mm CD Audio Header (J1E1) ..................................................................................35

10. MIDI/Game Port Header (J2E2).................................................................................36

11. Front Chassis 2 Fan Header (J12B2).........................................................................36

12. CPU 2 Fan Header (J3F2) .........................................................................................36

13. Rear Chassis Fan Header (J1M1)..............................................................................36

14. CPU 1 Fan Header (J2E1).........................................................................................37

15. Front Chassis 1 Fan Header (J12A1).........................................................................37

16. Hard Drive LED Input Header (J10A1).......................................................................37

17. Hard Drive LED Input Header (J11B1).......................................................................37

18. Wake on LAN Header (J6D1).....................................................................................37

19. Wake-on-Modem Header (J9A1)................................................................................37

20. Floppy Drive Connector (J8F2) ..................................................................................38

21. PCI IDE Connectors (J9F1, J8F1)..............................................................................38

22. Wide (16-bit) Ultra SCSI Connectors (J10F1, J10D1)................................................39

23. Narrow (8-bit) SCSI Connector (J10E1).....................................................................39

24. RAID

25. A.G.P. Connector (J2E3)............................................................................................41

26. Serial Port 2 Header (J1E2).......................................................................................42

27. Sleep LED Header (J12D1)........................................................................................42

28. Power Supply Connector (J5M1)................................................................................43

29. Auxiliary Power Supply Connector (J1M2).................................................................43

30. Front Panel I/O Connectors........................................................................................45

31. PS/2 Keyboard/Mouse Connectors............................................................................48

32. USB Connectors ........................................................................................................48

33. Serial Port Connectors...............................................................................................48

34. Audio Line Out Connector..........................................................................................48

Connector (J4D1) .......................................................................................40

port

35. Audio Line In Connector.............................................................................................48

36. Audio Mic In Connector..............................................................................................49

37. Parallel Port Connector..............................................................................................49

38. LAN Connector...........................................................................................................49

39. PCI Bus Connectors...................................................................................................50

40. ISA Bus Connectors...................................................................................................51

41. Connector/Jumper Block Part Numbers.....................................................................53

42. System Configuration Jumper Settings......................................................................55

43. Environmental Specifications.....................................................................................57

44. Power Usage..............................................................................................................58

45. DC Voltage Tolerances.............................................................................................58

46. Thermal Considerations for Components...................................................................59

47. Memory Map ..............................................................................................................61

48. DMA Channels...........................................................................................................61

49. I/O Map ......................................................................................................................62

50. PCI Configuration Space Map....................................................................................64

51. Interrupts....................................................................................................................64

52. PCI Interrupt Routing Map..........................................................................................65

53. Flash Memory Organization .......................................................................................68

54. Recommendations for Configuring an ATAPI Device.................................................69

55. Supervisor and User Password Functions .................................................................73

56. Setup Menu Bar.........................................................................................................75

57. Setup Function Keys..................................................................................................75

58. Maintenance Menu.....................................................................................................76

59. Main Menu .................................................................................................................76

60. Floppy Options Submenu...........................................................................................77

61. IDE Device Configuration Submenus.........................................................................78

62. Advanced Menu.........................................................................................................79

63. Resource Configuration Submenu.............................................................................80

64. Peripheral Configuration Submenu............................................................................81

65. Keyboard Features Submenu ....................................................................................83

66. Video Configuration Submenu ...................................................................................83

67. DMI Event Logging Submenu ....................................................................................84

68. Security Menu............................................................................................................84

69. Power Menu...............................................................................................................85

70. Boot Menu..................................................................................................................86

71. Hard Drive Submenu..................................................................................................87

72. Removable Devices Submenu...................................................................................87

73. Exit Menu...................................................................................................................87

74. Overview of the SCSI

Select

Keys..............................................................................89

75. BIOS Error Messages ................................................................................................97

76. Port 80h Codes..........................................................................................................99

77. Beep Codes .............................................................................................................104

78. Compliance with Specifications................................................................................105

1 Motherboard Description

1.1 Overview

The DK440LX motherboard supports the following features: Custom ATX form factor Processor



• Single or dual Pentium

• 66 MHz bus speed

• Supports all published Pentium II processor speeds and voltages

• 512 KB second-level cache on the Single Edge Contact (S.E.C.) cartridge

• S.E.C. cartridge Slot 1 connectors

Main Memory

• Four 168-pin DIMM sockets

• Supports up to 512 MB of synchronous DRAM (SDRAM) or 1 GB of extended data out

(EDO) memory

• ECC memory support

II processor support

Intel 440LX AGPset and PCI/IDE Interface

• Intel 82443LX PCI/A.G.P. controller (PAC)  Integrated PCI bus mastering controller  Integrated Accelerated Graphics Port (A.G.P.) bus controller

• Intel 82371AB PCI/ISA/IDE Xcelerator (PIIX4)  Supports up to four IDE drives or devices  Multifunction PCI-to-ISA bridge  USB and DMA controllers  Two fast IDE interfaces  Power management logic  Real-time clock

SCSI Subsystem

†

• Adaptec

• Dual channel

• 8-bit Narrow, 8-bit Fast, 16-bit Wide, and 16-bit Ultra Wide SCSI, providing 10 MB/sec to

40 MB/sec sustained throughput per channel

• Supports burst data transfers on the PCI bus up to 133 MB/sec

• Two Ultra Wide 68-pin connectors and one 50-pin connector

• RAIDport

AIC-7895 PCI Bus Master Multichannel SCSI Host Adapter

†

interface connector

DK440LX Motherboard Technical Product Specification

Other I/O Features

†

• National PC97307 SuperI/O

controller

• Integrates standard I/O functions: floppy-drive interface, one multimode parallel port, two FIFO serial ports, keyboard and mouse controller

• Two Universal Serial Bus (USB) interfaces with legacy keyboard mode and mouse support

Optional LAN Subsystem

• Integrates a complete LAN interface onboard using the Intel 82557 LAN controller

††

• Includes Wake on LAN

technology implemented via a remote wakeup ASIC

Manageability

• WfM compliant

• National Semiconductor LM79 Microprocessor System Hardware Monitor

• Management Level 3 support

• Wake on LAN header for use with add-in network interface cards (NICs)

Optional Audio Subsystem

• Optional Crystal CS4236B single-chip solution

†

• AdLib

, Sound Blaster Pro† 2.0, Windows Sound System, and MPU-401 support

Six Expansion Slots:

• One ISA slot

• Three PCI slots

• One shared PCI/ISA slot

• One A.G.P. slot

Other Features

• Intel/Phoenix BIOS

• Plug and Play compatible

• Single-jumper configuration

• Advanced Power Management (APM) support

Software drivers and utilities are available from Intel.

1.2 Manufacturing Subsystem Options

The following are manufacturing subsystem options:

• Audio

• Onboard LAN

• Serial port 2 header

• Hardware wavetable support

Motherboard Description

DK440LX Motherboard Technical Product Specification

1.3 Motherboard Components

DD CC

B C

RS Q P

HA D

I J

K L

M N

W V UXYZ

OM06271

Figure 1. Motherboard Components

Motherboard Description

A Serial port 2 header (optional) U Narrow (8-bit) SCSI connector B Rear chassis fan header V Sleep LED header C ATAPI CD audio connector (optional) W Front panel I/O header D ATAPI-style telephony connector (optional) X AIC-7895 SCSI Host Adapter E ATAPI-style Line In connector (optional) Y HDD LED input header (4-pin) F 2 mm CD audio connector (optional) Z Front chassis 2 fan header G CPU 2 fan header AA Front chassis 1 fan header H Back panel I/O connectors BB Speaker I CPU 1 fan header CC Battery J Auxiliary power connector DD HDD LED header (2-pin) K Boot processor Slot 1 EE Wake-on-Modem header L Intel 82443LX PAC FF PC97307 SuperI/O Controller M ATX power connector GG Wake on LAN header

port

N Application processor Slot 1 HH SCSI PCI RAID O DIMM sockets II Intel 82557 PCI LAN Controller P Configuration jumper block JJ A.G.P. connector Q IDE connectors KK MIDI/Game Port connector (optional) R Floppy drive connector LL PCI slots S Intel 82371AB PIIX4 MM ISA slots T Ultra-wide (16-bit) SCSI connectors NN Chassis security header

connector

DK440LX Motherboard Technical Product Specification

1.4 Custom Form Factor

The motherboard is designed to fit into an ATX form-factor chassis. Figure 2 shows that the I/O connector locations and the mounting hole locations are in compliance with the ATX specification (see Section 7.2).

0.20 3.30

12.70

12.30

11.40

0.30

0.00

5.10

5.350.45

Figure 2. Motherboard Dimensions

11.30

6.20

3.35

11.55

3.10

OM06273

Motherboard Description

1.5 I/O Shield

The back panel I/O shield for the motherboard must meet specific dimension and material requirements. Systems based on this motherboard need the back panel I/O shield to pass EMI compliance verification. Figure 3 shows the critical dimensions of a chassis-independent I/O shield and the location of the EMI gasket on the I/O shield. Additional design considerations for I/O shields relative to chassis requirements are described in the ATX specification. See Section 7.2 for information about the ATX specification.

0.201

0.00

0.461

1.209

1.216

1.433

1.689

0.207

0.00

0.409

0.773

1.534

1.803

Outside(Rear) View of Shield

2.959

4.180

5.184

EMI Gasket

5.785

5.975

0.617

1.207

1.450

1.489

6.183

OM06888

Figure 3. Back Panel I/O Shield Dimensions (ATX Chassis-Independent)

DK440LX Motherboard Technical Product Specification

1.6 Processor

The motherboard supports configurations of one or two Pentium II processors. The processor’s VID pins automatically program the voltage regulator on the motherboard to the required processor voltage. The motherboard currently supports processors that run internally at 233 MHz, 266 MHz, or 300 MHz , have a 512 KB second-level cache, and identical processor voltages. In order to ensure reliable motherboard operation across the widest possible range of processor and chassis combinations, it is recommended that only Pentium II processors with fan/heatsinks be installed on the DK440LX motherboard.

1.6.1 Processor Packaging

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

The processor connects to the motherboard through the Slot 1 connector, a 242-pin edge connector. When mounted in a Slot 1 connector, the processor is secured by a retention mechanism attached to the motherboard.

1.6.2 Second Level Cache

The second-level cache is located on the substrate of the S.E.C. cartridge. The ECC cache includes burst pipelined synchronous static RAM (BSRAM) and tag RAM. There are four BSRAM components totaling 512 KB in size. Only up to 512 MB of system memory is cacheable.

1.6.3 Processor Upgrades

NOTE

✏

In a uniprocessor configuration, the processor must be installed in the boot processor slot (the slot closest to the back panel) and a termination card must be installed in the application processor slot. If the processor is installed in the application processor slot, the computer will not boot.

Two microprocessor upgrades are available:

• Upgrade to a higher speed processor(s)

• Single to dual processors

If you are installing two processors, the following values must be identical for both processors:

• L2 cache size and type (ECC or non-ECC)

• Operating voltages

• Bus and core frequencies

The core stepping value may differ by one step, such as C0 to C1. These values can be determined by checking the parameters of the s-spec number. The s-spec number is a five-character code, for example, SL28R, printed on the top edge of the S.E.C.

For information about s-spec parameters, refer to the Pentium II processor quick reference guide at the Intel developer’s web site.

Motherboard Description

CAUTION

If the operating voltages do not match, the computer will not boot.

When upgrading the processor, use the BIOS configuration mode to change the processor speed if necessary (see Section 1.18.2).

1.7 Memory

1.7.1 Main Memory

The motherboard has four dual inline memory module (DIMM) sockets. Minimum memory size is 16 MB; maximum memory size is 512 MB with SDRAM and 1 GB with EDO DRAM. The BIOS automatically detects memory type, size, and speed.

The motherboard supports the following memory features:

• JEDEC MO-161 compliant 168-pin DIMMs with gold-plated contacts (see Section 7.2 for information about this specification)

• Unbuffered 66-MHz ECC/non-ECC SDRAM or 60-ns EDO ECC/non-ECC DIMMs

• 3.3 V memory only

• Single- or double-sided DIMMs in the sizes listed in Table 1

Table 1. Supported DIMM Sizes

DIMM Size Configuration

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

128 MB 16 Mbit x 72/64 256 MB (EDO DRAM only) 32 Mbit x 72/64

Memory can be installed in one, two, three, or four sockets. Memory type, size, and speed can vary between sockets, so EDO and SDRAM DIMMs can be installed on the same motherboard.

NOTE

✏

There may be mechanical interference with the DIMM 0 socket (J6G3) and the DIMM 1 (J6G2) socket in some combinations of ATX chassis and peripherals, such as CD-ROMs.

NOTE

✏

The DK440LX motherboard supports DIMMs with both asymmetrically and symmetrically addressable DRAMs.

DK440LX Motherboard Technical Product Specification

1.7.2 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.

1.7.3 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.

1.8 Chipset

The Intel 440LX AGPset is designed for the Pentium II processor and the Accelerated Graphics Port (A.G.P.). It consists of the Intel 82443LX PCI/A.G.P. controller (PAC) and the Intel 82371AB PCI/ISA IDE Xccelerator (PIIX4) bridge chip.

1.8.1 Intel 82443LX 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  Processor host bus speed at 66 MHz  Support for dual Pentium II processor configurations  32-bit addressing  GTL+ compliant host bus interface

• Integrated DRAM controller  Supports synchronous DRAM (SDRAM) and EDO  64/72-bit path-to-memory  Auto detection of memory type  Supports 4-, 16-, 64-Mbit DRAM devices  Symmetrical and asymmetrical DRAM addressing  Supports 3.3 V DRAMs

• Accelerated Graphics Port Interface  Complies with A.G.P. specification (see Section 7.2 for specification information)  Supports 3.3 V A.G.P. devices with data transfer rates up to 532 MB/sec  Synchronous coupling to the host-bus frequency

• Fully-synchronous PCI bus interface  Complies with PCI specification (see Section 7.2 for specification information)  PCI-to-DRAM access greater than 100 MB/sec  Supports five PCI bus masters in addition to the host and PCI-to-ISA I/O bridge  Delayed transactions

Motherboard Description

• Data Buffering  Host-to-DRAM, PCI-to-DRAM, and A.G.P.-to-DRAM write-data buffering  Write-combining for host-to-PCI burst writes  Supports concurrent host, PCI, and A.G.P. transactions to main memory

• Supports system management mode (SMM)

1.8.2 Intel 82371AB PCI ISA IDE Xcelerator (PIIX4)

The PIIX4 is a multifunction PCI device implementing the PCI-to-ISA bridge, PCI IDE functionality, Universal Serial Bus (USB) host/hub function, and enhanced power management. The PIIX4 features:

• Multifunction PCI-to-ISA bridge  Supports the PCI bus at 33 MHz  Complies with PCI specification (see Section 7.2 for specification information)  Full ISA bus support

• USB controller  Two USB ports (see Section 7.2 for specification information)  Supports legacy keyboard and mouse  Supports UHCI Design Guide, revision 1.1, interface

• Integrated dual-channel enhanced IDE interface  Supports up to four IDE devices  PIO Mode 4 transfers at up to 14 MB/sec  Supports 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  Supports 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  Supports 15 interrupts  Programmable for edge/level sensitivity

• Power management logic  Sleep/resume logic  Supports Wake-on-Modem, Wake on LAN technology, and wake on PME

• Real-Time Clock  256 byte battery-backed CMOS SRAM  Includes date alarm

• 16-bit counters/timers based on 82C54

DK440LX Motherboard Technical Product Specification

1.8.3 Intel 82093AA I/O Advanced Programmable Interrupt Controller (IOAPIC)

The Intel 82093AA I/O Advanced Programmable Interrupt Controller (IOAPIC) provides interrupt management and incorporates both static and dynamic symmetric interrupt distribution across all processors in a multiprocessor system. The 82093AA IOAPIC features 24 interrupts as follows:

• 13 ISA interrupts

• Four PCI interrupts

• One Interrupt/SMI# rerouting

• Two motherboard interrupts

• One interrupt used for INTR input

• Three general purpose interrupts

1.8.4 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 533 MB/sec

See Section 7.2 for more information about the A.G.P. specification.

1.8.5 Universal Serial Bus (USB)

The motherboard has two USB ports; one USB peripheral can be connected to each port. For more than two USB devices, an external hub can be connected to either port. The motherboard fully supports the universal host controller interface (UHCI) and uses UHCI-compatible software drivers. See Section 7.2 for information about the USB specification. USB features include:

• Self-identifying, hot pluggable peripherals

• Automatic mapping of function to driver and configuration

• Support of isochronous and asynchronous transfer types

• Support for a maximum of 127 physical devices

• Guaranteed bandwidth and low latencies appropriate for telephony, audio, and other

applications

• Error handling and fault recovery mechanisms built into protocol

NOTE

✏

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

Motherboard Description

1.8.6 IDE Support

The motherboard has two independent bus-mastering IDE interfaces. These interfaces support PIO Mode 3, PIO Mode 4, ATAPI devices (e.g., CD-ROM), and Ultra DMA 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 and translation mode.

The motherboard supports LS-120 diskette technology through its IDE interfaces. LS-120 diskette technology enables users to store 120 MB of data on a single, 3.5-inch removable diskette. LS-120 technology is backward (both read and write) compatible with 1.44 MB and 720 KB DOS-

†

formatted diskettes and is supported by Windows

95 and Windows NT† operating systems.

The motherboard allows connection of an LS-120 compatible drive and a standard 3.5-inch diskette drive. If an LS-120 drive is connected to an IDE connector and configured as the A drive and a standard 3.5-inch floppy is configured as a B drive, the standard floppy must be connected to the floppy drive cable's "A" connector (the connector at the end of the cable). The LS-120 drive can be configured as a boot device, if selected in the BIOS setup utility.

1.8.7 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 CMOS SRAM in two banks that are reserved for BIOS use.

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

An external coin-cell battery powers the real-time clock and CMOS memory. 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 3 V standby current from the power supply extends the life of the battery. The clock is accurate to ± 13 minutes/year at 25 ºC with 5 V applied.

DK440LX Motherboard Technical Product Specification

1.9 SuperI/O Controller

The PC97307 SuperI/O controller from National Semiconductor is an ISA Plug and Play compatible (see Section 7.2), multifunction I/O device that provides the following features:

• Serial ports  Two 16450/16550A-software compatible UARTs  Internal send/receive 16-byte FIFO buffer  Four internal 8-bit DMA options for the UART with SIR support (USI)

• Multimode bidirectional parallel port  Standard mode: IBM and Centronics compatible  Enhanced parallel port (EPP) mode with BIOS and driver support  High-speed extended capabilities port (ECP) mode

• Floppy disk controller  DP8473 and N82077 compatible  16-byte FIFO buffer

†

 PS/2  High-performance digital data separator (DDS)  PC-AT

• Keyboard and mouse controller  Industry standard 8042A compatible  General-purpose microcontroller  8-bit internal data bus

diagnostic-register support

†

, PS/2, and 3-mode floppy disk drive-mode support

By default, the I/O controller interfaces are automatically configured during boot up. The I/O controller can also be manually configured in the Setup program.

1.9.1 Serial Ports

The two 9-pin D-Sub serial port connectors on the back panel are compatible with 16450 and 16550A UARTs. An optional onboard keyed 10-pin header is available for internal cabling of serial port 2. If the optional onboard serial port 2 header is installed, the 9-pin D-Sub serial port 2 connector is not installed.

1.9.2 Parallel Port

The connector for the multimode bidirectional parallel port is a 25-pin D-Sub connector located on the back panel. In the Setup program, the parallel port can be configured for the following:

• Compatible (standard mode)

• Bidirectional (PS/2 compatible)

• Extended Parallel Port (EPP)

• Enhanced Capabilities Port (ECP)

Motherboard Description

1.9.3 Floppy Controller

The I/O controller is software compatible with the DP8473 and N82077 floppy drive controllers and supports both PC-AT and PS/2 modes. In the Setup program, the floppy interface can be configured for the following floppy drive capacities and sizes:

• 360 KB, 5.25-inch

• 1.2 MB, 5.25-inch

• 720 KB, 3.5-inch

• 1.2 MB, 3.5-inch (driver required)

• 1.25/1.44 MB, 3.5-inch

• 2.88 MB, 3.5-inch

1.9.4 Keyboard and Mouse Interface

PS/2 keyboard and mouse connectors are located on the back panel. The 5 V lines to these connectors are protected with a PolySwitch connection after an over-current condition is removed.

NOTE

✏

The mouse and keyboard can be plugged into either of the PS/2 connectors. Power to the computer should be turned off before a keyboard or mouse is connected or disconnected.

The keyboard controller contains the AMI Megakey keyboard and mouse controller code, provides the keyboard and mouse control functions, and supports password protection for power on/reset. A power on/reset password can be specified in Setup.

The keyboard controller also supports the hot-key sequence <Ctrl><Alt><Del> for a software reset. This key sequence resets 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, reestablishes the

DK440LX Motherboard Technical Product Specification

1.10 Audio Subsystem

The optional onboard audio subsystem features the Crystal CS4236B, an audio codec with an integrated FM synthesizer. The audio subsystem provides all the digital audio and analog mixing functions needed for recording and playing sound on personal computers. Together, these components feature the following:

• Stereo analog-to-digital and digital-to-analog converters

• Analog mixing, anti-aliasing, and reconstruction filters

• Line and microphone level inputs

• ADPCM, A-law, or µlaw digital audio compression/decompression

• Full digital control of all mixer and volume control functions

• High-quality, 16-bit, MPC-II compliant onboard audio

• Full duplex operation

• AdLib, Sound Blaster Pro 2.0, Windows Sound System, and MPU-401 support

• Full DOS games compatibility

• MIDI/Game port support

• OPL3 compatible FM synthesizer

• BIOS Setup-based enable/disable

• Onboard Crystal CS9236 Wavetable Music Synthesizer (optional)

The audio subsystem requires up to two DMA channels and one IRQ. Table 2 shows the IRQ, DMA channel, and base I/O address options. These options are automatically chosen by the Plug and Play interface, so there are no default settings.

Table 2. Audio Subsystem Resources

IRQ

Resource

Sound Blaster (DMA playback, DMA / IRQ shared with Windows Sound System capture)

Windows Sound System (DMA playback)

MPU-401 (IRQ shared with Sound Blaster)

MIDI 200-207h FM Synthesis 388-38Dh

†

(Options)

5 (best choice) 7 10 (best choice) 11

5 7 10 (best choice) 11

5 (best choice) 7 10 (best choice) 11

DMA Channel (Options)

0 (best choice)3210-21Fh

0 1 (best choice) 3

I/O Address (Options)

220-22Fh (best choice) 230-234h 240-24Fh 250-25Fh 260-26Fh

534-537h (best choice) 608-60Bh

300-301h 330-331h (best choice) 332-333h 334-335h

CS4236B Control FF0-FFFh

1.10.1 Audio Subsystem Performance

Table 3 lists the performance characteristics of the audio subsystem.

Table 3. Audio Subsystem Performance

Characteristic Test Result

Frequency Response -1.3 dB @ 20 Hz

-0.6 dB @ 20 kHz Signal-to-Noise Ratio -91.05 dB Total Harmonic Distortion vs. Amplitude 0.0044% @ -4.813 dB Total Harmonic Distortion vs. Frequency 0.0042% @ 9355 Hz Crosstalk L-to-R -92.69 dB Crosstalk R-to-L -93.12 dB

1.10.2 Audio Drivers and Utilities

Motherboard Description

Audio software and utilities are available from Intel’s World Wide Web site (see Section 7.1). Audio driver support is provided for the Microsoft Windows NT

†

Windows 95, and IBM OS/2

Warp† (versions 3.0 and 4.0) operating systems.

(versions 3.51 and 4.0), Microsoft

1.10.3 Audio Connectors

The audio connectors include the following:

• Back panel connectors: Line In, Line Out, Mic In (see Section 1.16.4)

• CD-ROM audio (ATAPI or 2 mm)

• Telephony (ATAPI style)

• MIDI/Game port header

• Line In (ATAPI style)

See Section 1.16.4 for the location and pinouts of the audio connectors.

1.10.3.1 CD-ROM Audio

An optional 1 x 4-pin ATAPI-style (J1F1) or 1 x 4-pin 2 mm (J1E1) connector is available for connecting an internal CD-ROM drive to the audio mixer.

1.10.3.2 Telephony

An optional 1 x 4-pin ATAPI-style connector (J0E1) is available for connecting the monaural audio signals of an internal telephony device, such as a modem, to the audio subsystem. A monaural audio-in and audio-out signal interface is necessary for telephony applications such as speakerphones, modem, and answering machines.

1.10.3.3 MIDI/Game Port Header

An optional 2 x 8-pin MIDI/Game port header (J2E2) is available for connecting MIDI devices and joysticks.

DK440LX Motherboard Technical Product Specification

1.10.3.4 Line In

An optional 1 x 4-pin ATAPI-style Line In connector (J0F2) is available for connecting the left and right channel signals of an internal audio device to the audio subsystem. An audio-in signal interface of this type is useful in applications such as TV tuners.

1.10.4 Hardware Wavetable Support

The optional hardware wavetable support is implemented with a Crystal CS9236 Wavetable Music Synthesizer. The CS9236 device is a complete General MIDI wavetable music synthesizer on a single chip. The MIDI interpreter, synthesis engine, effects processing, and all RAM and ROM (including the wavetable sample ROM) are included on-chip. The CS9236 includes the following features:

• General MIDI compliant

• 32-note polyphony at 44.1 kHz rate

• Independent reverb and chorus levels for each MIDI channel

1.11 Hardware Monitor Subsystem

The hardware monitor subsystem includes a National Semiconductor LM79 Microprocessor System Hardware Monitor, an analog multiplexer, and a chassis security header. Its features include:

• Management Level 3 functionality.

• Integrated temperature and voltage sense monitoring to detect levels above or below acceptable

values (+12 V, -12 V, +5 V, -5 V, and +3.3V). When suggested ratings for temperature, fan speed, or voltage are exceeded, an interrupt is activated.

• Fan speed sensors for up to five fans with the onboard analog multiplexer.

• Header for an external chassis security feature.

• 8-bit I/O map to ISA bus or access from SMBus.

Figure 4 shows a block diagram of the hardware monitor subsystem.

LM79

Motherboard Description

Rear Chassis Fan Front Chassis 1 Fan Front Chassis 2 Fan

Control 3(8)

Status 4(8)

Limit 1(8)

Limit 2 (8)

Limit 17(8)

FAN Intvl

Timers (3)

POST Regs

(32 x 8)

Port 80/84

Shadow

I C I/F Slave

CPU 1 Fan CPU 2 Fan

Multi-

plexer

2 Pulse/Rev 2 Pulse/Rev 2 Pulse/Rev

Chassis Security

Header

Power Switch

(Bypass)

BTI

VOLTAGE

+5 Sense

-5 +12

-12 +3.3 +2.5A +2.5B

Temp

Sensor

Security

RESET

8 Bit 8 Ch

MUX

A/D

Figure 4. Block Diagram of Hardware Management Subsystem

SDA SCL

VID[0...3]

OM06922

The 1 x 2-pin chassis security header (J0A1) can be connected to a normally-open mechanical switch on the chassis. See Section 1.16 for the location and pinouts of the chassis security header.

1.12 EtherExpress PRO/100WfM PCI LAN Subsystem

The optional Intel EtherExpress PRO/100WfM PCI LAN subsystem (see Figure 5) is an Ethernet include:

•

†

LAN interface that provides both 10Base-T and 100Base-TX connectivity. Features

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 with connection and

activity status LEDs IEEE 802.3µ Auto-Negotiation for the fastest available connection Jumperless configuration; the LAN subsystem is completely software configurable

DK440LX Motherboard Technical Product Specification

RJ-45

Common Magnetic

Module

Connector

10 Mbit/sec

Xmit/Rcv

100 Mbit/sec

Xmit/Rcv

PCI Local Bus

Intel

82555

PHY

Intel

82557

PHY_RST# MP_WAKEUP

MII

EEPROM

Wake on

LAN

ASIC

Figure 5. LAN Subsystem Block Diagram

1.12.1 Intel 82557 LAN Controller

The Intel 82557 LAN Controller 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 802.3µ-compliant physical layer devices

(PIIX4)

OM06270A

1.12.2 10 / 100 Mbit/sec Physical Layer Interface

The physical layer interface is implemented by the Intel 82555 Physical Layer Interface (PHY) device. This device provides:

• Complete functionality necessary for the 10Base-T and 100Base-TX interfaces; when in

10 Mbit/sec mode, the interface drives the cable directly

• A complete set of MII management registers for control and status reporting

• 802.3µ Auto-Negotiation for automatically establishing the best operating mode when

connected to other 10Base-T or 100Base-TX devices

1.12.3 Wake on LAN ASIC

The Wake on LAN ASIC performs remote wakeup of the motherboard via the onboard LAN interface. When the system is powered off, the Wake on LAN ASIC remains powered by the 5 V standby voltage. The ASIC monitors network traffic at the MII interface and when it detects a Magic Packet

†

it asserts a wakeup signal that powers up the computer.

Motherboard Description

1.12.4 LAN Subsystem Software

The EtherExpress PRO/100WfM PCI LAN software provided includes setup/diagnostic software (SETUP.EXE), a readme file viewer (README.EXE) and the drivers listed in Table 4. The LAN software is available from Intel’s World Wide Web site (see Section 7.1).

Table 4. EtherExpress PRO/100WfM PCI Drivers

Driver Description Environment(s)

E100BODI.COM Novell† ODI NetWare† DOS Client E100BODI.SYS Novell ODI NetWare OS/2 Client E100B.LAN Novell ODI NetWare 3.11 Server

NetWare 3.12 Server NetWare 4.0x Server NetWare NT Requester NetWare for OS/2

E100B.DOS NDIS 2.0.1 Windows for Workgroups 3.11

MS-DOS

E100B.OS2 NDIS 2.0.1 MS OS/2 1.3

IBM OS/2 2.11 IBM OS/2 Warp

E100B.SYS NDIS 3.X Windows 95

Windows NT 3.5x

E100BNT.SYS NDIS 4.0 Windows NT 4.0

†

LANMAN 2.1

1.13 Wake on LAN Header

Header J6D1 is used to implement the Wake on LAN feature. Connect this header to a network interface card (NIC) that supports the Wake on LAN technology. The NIC monitors network traffic. When the NIC detects a Magic Packet, it asserts a signal through the Wake on LAN header to wake up the computer. This signal can wake up the computer only when the power cord is still plugged into the socket and the computer is turned off. Wake on LAN can be enabled through the BIOS Setup program.

NOTE

✏

The computer’s power supply must provide sufficient +5 VSB current to the NIC; without enough +5 VSB current, the Wake on LAN feature will not function and the motherboard may not boot. Check the NIC’s documentation for its +5 VSB current requirements. See Section 1.22 for information on the motherboard’s power requirements.

1.14 Wake on Modem

The Wake-on-Modem feature allows the computer to wake from Sleep mode when a call is received on a telephony device, such as a modem. The first incoming call will power up the motherboard, but a second call must be made to access the computer.

DK440LX Motherboard Technical Product Specification

1.15 SCSI Subsystem

The onboard SCSI subsystem features the Adaptec AIC-7895, which contains a dual-channel SCSI controller and a PCI bus master interface. The AIC-7895 supports the following:

• Narrow (8-bit, 50-pin) or Wide (16-bit, 68-pin) Fast SCSI providing 10-20 MB/sec throughput

per channel

• Narrow (8-bit, 50-pin) or Wide (16-bit, 68-pin) Ultra SCSI providing 20-40 MB/sec

throughput per channel

• Burst data transfers on the PCI bus up to the maximum rate of 133 MB/sec per channel using

the on-chip 256-byte FIFO buffer

• RAIDport connector interface

• Two Wide 68-pin connectors

• One Narrow 50-pin connector

• Subsystem Vendor and Device ID support

• Spin down of SCSI drive

• SCAM (SCSI Configured Automatically) Level 2

1.15.1 SCSI Drivers and Utilities

SCSI drivers are available from Intel’s World Wide Web site (see Section 7.1). SCSI driver support is provided for the Microsoft Windows NT Windows 95, and IBM OS/2 Warp (versions 3.0 and 4.0) operating systems.

(versions 3.51 and 4.0), Microsoft

1.15.2 SCSI Interface

The AIC 7895 also offers active negation outputs and a disk activity output signal. Active negation outputs reduce the chance of data errors by actively driving both polarities of the SCSI bus, avoiding indeterminate voltage levels. The SCSI output drivers can directly drive a 48 mA single-ended SCSI bus with no additional drivers. Synchronous SCSI can handle up to 15 REQ control signals simultaneously.

1.15.3 SCSI Bus

Each channel’s SCSI data bus is 8- or 16-bits wide with odd ECC generated per byte. SCSI control signals are the same for either bus width. The motherboard has three onboard SCSI connectors. Channel A has a high-density 68-pin Wide connector, while channel B has a highdensity 68-pin Wide connector as well as a 50-pin Narrow connector (see Figure 7). On a 16-bit wide SCSI bus, the AIC-7895 assigns the highest arbitration priority to the low byte of the 16-bit word. This way, 16-bit targets can be mixed with 8-bit targets if the 8-bit devices are placed on the low data byte. During chip powerdown, all inputs are disabled to reduce power consumption.

Motherboard Description

1.15.3.1 SCSI Bus Topology

Figure 6 shows a typical single-channel SCSI bus implementation with internal and external devices.

Last

Internal

Device

Chassis

Single-or Dual-

Connector

External SCSI

Cable

External

SCSI

Device

Single-or Dual-Connector

Terminator Card

Motherboard

Internal

SCSI

Cable(s)

Internal SCSI Devices

OM06274A

Figure 6. Single-channel SCSI Bus Topology

From end to end, a SCSI cable is routed, in a daisy chain fashion, from the last internal SCSI device to each subsequent internal device including the onboard host controller. The cable can then continue to an optional terminator card installed in an unused I/O slot of the chassis. From the terminator card, an optional external SCSI cable can be used to connect external SCSI devices.

1.15.3.2 SCSI Cable

For proper operation of ultra/wide SCSI devices, the overall length of the SCSI cable from the last internal device to the last external device should not exceed 3 meters with four Ultra Wide SCSI peripherals and 1.5 meters with eight peripherals per channel (within constraints defined by the ANSI SCSI-3 Specification).

DK440LX Motherboard Technical Product Specification

1.15.3.3 Channel A SCSI Bus Termination

Terminate the extreme ends of the SCSI bus (cable), typically by connecting a terminated device to the end connectors of the cable:

• On the last connector of the internal cable (farthest from the motherboard), attach either a

terminated 16-bit device or some other type of 16-bit termination.

• If the internal cable ends at the motherboard, enable motherboard termination in the SCSI

BIOS (on bootup press <Ctrl><A> to enter the SCSISelect

• If the internal cable does not end at the motherboard, but continues on to the external

termination card, disable motherboard termination in the SCSI BIOS (using SCSISelect).

• If an external SCSI cable is attached to the terminator card, the terminator card’s termination is

disabled automatically. On the last connector of the external cable, attach either a terminated 16-bit device or some other type of 16-bit termination.

When using 16-bit SCSI devices on channel A:

• Use the onboard 68-pin Wide connector for cabling to 16-bit devices.

• Enable termination only on the last device on the SCSI cable (internal and/or external).

• Remove or disable termination on all other devices.

†

utility).

1.15.3.4 Channel B SCSI Bus Termination

Terminate the extreme ends of the SCSI bus (cable), typically by connecting a terminated device to the end connectors of the cable:

• On the last connector of the internal cable (farthest from the motherboard), attach either a

terminated 16-bit device or some other type of 16-bit termination.

• If the internal cable ends at the motherboard, enable motherboard termination in the SCSI

BIOS (on bootup press <Ctrl><A> to enter the SCSISelect

• If the internal cable does not end at the motherboard, but continues on to the external

termination card, disable motherboard termination in the SCSI BIOS (using SCSISelect).

• If an external SCSI cable is attached to the terminator card, the termination card’s termination

is disabled automatically. On the last connector of the external cable, attach either a terminated 16-bit device or some other type of 16-bit termination.

When using 16-bit SCSI devices on channel B:

• Use the onboard 68-pin Wide connector for cabling to 16-bit devices.

• Enable termination only on the last device on the SCSI cable (internal and/or external).

• Remove or disable termination on all other devices.

When using 8-bit SCSI devices on channel B:

• Use the onboard 50-pin connector for cabling to 8-bit devices.

• If the cable does not end at the motherboard, but continues to external devices, disable onboard

SCSI termination through the SCSISelect utility and the Channel B termination option in BIOS setup.

utility).

Motherboard Description

1.15.4 SCSI

See Chapter 5.

Select

1.15.5 Adaptec RAID

The onboard RAIDport connector, in conjunction with an ARO†-1130CA-B Adaptec RAIDport card and the SCSI controller, provides a complete client RAID solution. The RAIDport card supports the following features for enhancing performance, data redundancy, and data availability:

• RAID coprocessor

• Support for RAID levels 0 (data striping), 1 (mirroring), and 0/1

• Hot-swap drive support

• Hot-spare standby

• Dynamic sector repairing

For information on obtaining a RAIDport card, visit Adaptec’s web page at http://www.adaptec.com.

and SCSI Disk Utilities

port

DK440LX Motherboard Technical Product Specification

1.16 Motherboard Connectors

The following figure shows the location of the motherboard connectors.

Chassis Security

J2E3

B66

A.G.P.

Front Chassis 1

J12A1

Serial

Port 2

J0A1

J1E2

J2E2

MIDI/

Game

Port

B01

A01

Modem

B30

RAID

A30

port

J4D1

J12D1

A66

Sleep LED

Fan

J12E1

Front Panel I/O

Rear

Chassis

Fan

J2E1

ISA

Slots(2)

1615

PCI

Slots(4)

Wake-

on-

J9A1

HDD

LED

J10A1

Front Chassis 2

Fan

J12B2

J1E1

CD Audio

J1F1

ATAPI CD

Audio

J11B1

HDD

LED

Narrow

SCSI

Channel B

J10E1

J0F2

Line-In

49 50

Boot

Processor

Application

Processor

Slot 1

135

6834

Wide Ultra

SCSI

Channel

A & B

J10F1

J10D1

J0E1

Telephony

CPU 1

Auxiliary

Power

J1M2

Fan

Slot 1

J1M1

CPU 2

Fan

J3F2

J5M1

DIMM Sockets(4)

Bank 3 J5G1 Bank 2 J6G1 Bank 1 J6G2 Bank 0 J6G3

Wake

Power

on LAN

J6D1

IDE(2)

139

J8F1-Secondary

40202

J9F1-Primary

J8F2

234

Floppy

335

OM06921

Figure 7. Motherboard Connectors

Table 5. Chassis Security Header (J0A1)

Pin Signal Name

1 Ground 2 TAMPER_DETECT#

Table 6. ATAPI CD Audio Connector (J1F1)

Pin Signal Name

1 Left CD In 2 CD_common 3 CD_common 4 Right CD In

Table 7. ATAPI-Style Telephony Connector

(J0E1)

Pin Signal Name

1 MONO_IN (from external device) 2 Ground 3 Ground 4 TEL_MICIN

Motherboard Description

Table 8. ATAPI-Style Line In Connector

(J0F2)

Pin Signal Name

1 Left Line In 2 Ground 3 Ground 4 Right Line In (monaural)

Table 9. 2 mm CD Audio Header (J1E1)

Pin Signal Name

1 Right CD In 2 CD_common 3 Left CD In 4 CD_common

DK440LX Motherboard Technical Product Specification

Table 10. MIDI/Game Port Header (J2E2)

Pin Signal Name

1 +5 V (fused) 2 +5 V (fused) 3 JAB1 4 JABB1 5 JACX 6 JBCX 7 Ground 8 MIDI-OUT 9 Ground

10 JBCY 11 JACY 12 JBB2 13 JAB2 14 MIDI-IN 15 +5 V (fused) 16 MIDI-PRESENT GP

Table 11. Front Chassis 2 Fan Header

(J12B2)

Pin Signal Name

1 FAN_SEN 2 +12 V 3 Ground

Table 12. CPU 2 Fan Header (J3F2)

Pin Signal Name

1 FAN_SEN 2 +12 V 3 Ground

Table 13. CPU 1 Fan Header (J1M1)

Pin Signal Name

1 FAN_SEN 2 +12 V 3 Ground

Table 14. Rear Chassis Fan Header (J2E1)

Pin Signal Name

1 FAN_SEN 2 +12 V 3 Ground

Table 15. Front Chassis 1 Fan Header

(J12A1)

Pin Signal Name

1 FAN_SEN 2 +12 V 3 Ground

Table 16. Hard Drive LED Input Header

(J10A1)

Pin Signal Name

1 Ground 2 DRV_ACT#

Motherboard Description

Table 17. Hard Drive LED Input Header

(J11B1)

Pin Signal Name

1 Ground 2 DRV_ACT# 3 DRV_ACT# 4 Ground

Table 18. Wake on LAN Header (J6D1)

Pin Signal Name

1 +5 VSB 2 Ground 3 MP_WAKEUP

Table 19. Wake-on-Modem Header (J9A1)

Pin Signal Name

1 SLOT_RI_N 2 Ground

DK440LX Motherboard Technical Product Specification

Table 20. Floppy Drive Connector (J8F2)

Pin Signal Name Pin Signal Name

1 Ground 2 DENSEL 3 Ground 4 Reserved 5 Key 6 FDEDIN 7 Ground 8 FDINDX# (Index) 9 Ground 10 FDM00# (Motor Enable A) 11 Ground 12 FDDS1# (Drive Select B) 13 Ground 14 FDDS0# (Drive Select A) 15 Ground 16 FDM01# (Motor Enable B) 17 MSEN1 18 FDDIR# (Stepper Motor Direction) 19 Ground 20 FDSTEP# (Step Pulse) 21 Ground 22 FDWD# (Write Data) 23 Ground 24 FDWE# (Write Enable) 25 Ground 26 FDTRK0# (Track 0) 27 MSEN0 28 FDWPD# (Write Protect) 29 Ground 30 FDRDATA# (Read Data) 31 Ground 32 FDHEAD# (Side 1 Select) 33 Ground 34 DSKCHG# (Diskette Change)

Table 21. PCI IDE Connectors (J9F1, J8F1)

Pin Signal Name Pin Signal Name

1 Reset IDE 2 Ground 3 Data 7 4 Data 8 5 Data 6 6 Data 9 7 Data 5 8 Data 10 9 Data 4 10 Data 11 11 Data 3 12 Data 12 13 Data 2 14 Data 13 15 Data 1 16 Data 14 17 Data 0 18 Data 15 19 Ground 20 Key 21 DDRQ0 [DDRQ1] 22 Ground 23 I/O Write# 24 Ground 25 I/O Read# 26 Ground 27 IOCHRDY 28 P_ALE (Cable Select pullup) 29 DDACK0# [DDACK1#] 30 Ground 31 IRQ 14 [IRQ 15] 32 Reserved 33 Address 1 34 Reserved 35 Address 0 36 Address 2 37 Chip Select 1P# [Chip Select 1S#] 38 Chip Select 3P# [Chip Select 3S#] 39 Activity# 40 Ground

NOTE: Signal names in brackets ([ ]) are for the secondary IDE connector.

Motherboard Description

Table 22. Wide (16-bit) Ultra SCSI Connectors (J10F1, J10D1)

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

1 GND 18 TERM_PWR 35 SCSI_D12 52 TERM_PWR 2 GND 19 N/C 36 SCSI_D13 53 N/C 3 GND 20 GND 37 SCSI_D14 54 GND 4 GND 21 GND 38 SCSI_D15 55 SCSI_ATN# 5 GND 22 GND 39 SCSI_DPH# 56 GND 6 GND 23 GND 40 SCSI_D0 57 SCSI_BSY# 7 GND 24 GND 41 SCSI_D1 58 SCSI_ACK# 8 GND 25 GND 42 SCSI_D2 59 SCSI_RST# 9 GND 26 GND 43 SCSI_D3 60 SCSI_MSG# 10 GND 27 GND 44 SCSI_D4 61 SCSI_SEL# 11 GND 28 GND 45 SCSI_D5 62 SCSI_CD# 12 GND 29 GND 46 SCSI_D6 63 SCSI_REQ 13 GND 30 GND 47 SCSI_D7 64 SCSI_IO# 14 GND 31 GND 48 SCSI_DPL# 65 SCSI_D8 15 GND 32 GND 49 GND 66 SCSI_D9 16 GND 33 GND 50 GND 67 SCSI_D10 17 TERM_PWR 34 GND 51 TERM_PWR 68 SCSI_D11

Table 23. Narrow (8-bit) SCSI Connector (J10E1)

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

1 Ground 14 Data6 27 No connect 40 RST 2 DATA0 15 Ground 28 No connect 41 Ground 3 Ground 16 Data7 29 Ground 42 MSG 4 DATA1 17 Ground 30 Ground 43 Ground 5 Ground 18 Data8 31 Ground 44 SEL 6 DATA2 19 Ground 32 ATTN 45 Ground 7 Ground 20 Ground 33 Ground 46 -CD 8 DATA3 21 Ground 34 Ground 47 Ground 9 Ground 22 Ground 35 Ground 48 REQ 10 Data4 23 No connect 36 BSY 49 Ground 11 Ground 24 No connect 37 Ground 50 IO 12 Data5 25 No connect 38 ACK 13 Ground 26 No connect 39 Ground

DK440LX Motherboard Technical Product Specification

Table 24. RAID

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

B01 No connect B16 MD[0] A01 No connect A16 MDP B02 No connect B17 MD[2] A02 No connect A17 MD[1] B03 Ground B18 MD[4] A03 No connect A18 RAMPS# B04 No connect B19 Ground A04 No connect A19 MD[3] B05 REQ[A]# B20 MD[6] A05 ACK[A]# A20 MD[5] B06 RSVD B21 MA[14] A06 RSVD A21 MA[13] B07 REQ[B]# B22 MA[12] A07 ACK[B]# A22 MD[7] B08 REQ[C]# B23 MA[10] A08 ACK[C]# A23 MA[11] B09 LED[A]# B24 MA[8] A09 IDDAT A24 MA[9] B10 No connect B25 PRSNT1 A10 No connect A25 MA[7] B11 No connect B26 MA[6] A11 No connect A26 Ground B12 RSVD B27 MA[4] A12 SY_RST# A27 MA[5] B13 CLK40 B28 Ground A13 ROMCS[A]# A28 MA[3] B14 Ground B29 MA[2] A14 RAMCS# A29 SEECS[A] B15 MRW B30 MA[0] A15 Ground A30 MA[1]

port

Connector (J4D1)

Motherboard Description

Table 25. A.G.P. Connector (J2E3)

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 Reserved A10 AGP_ST1 B10 AGP_ST0 A43 Ground B43 Ground A11 Reserved B11 AGP_ST2 A44 Reserved B44 Reserved A12 AGP_PIPE# B12 AGP_RBF# 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 No Connect 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_STB0 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_STB1 A65 AGP_AD0 B65 AGP_AD1 A33 AGP_CBE3# B33 AGP_AD23 A66 No Connect B66 No Connect

DK440LX Motherboard Technical Product Specification

Table 26. Serial Port 2 Header (J1E2)

Pin Signal Name

1 DCD# 2 DSR# 3 SIN# 4 RTS# 5 SOUT# 6 CTS# 7 DTR# 8RI 9 Ground 10 Key

Table 27. Sleep LED Header (J12D1)

Pin Signal Name

1 Ground 2 Yellow/Green 3 Green/Yellow

Motherboard Description

1.16.1 Power Supply Connector

When used with an ATX-compliant power supply that supports remote power on/off, the motherboard can turn off the system power through software control. See Section 7.2 for information about the ATX specification.

Table 28. Power Supply Connector (J5M1)

Pin Signal Name

1 +3.3 V 2 +3.3 V 3 Ground 4 +5 V 5 Ground 6 +5 V 7 Ground 8 PWRGD (Power Good) 9 +5 VSB 10 +12 V 11 +3.3 V 12 -12 V 13 Ground 14 PW_ON# (power supply remote on/off

control) 15 Ground 16 Ground 17 Ground 18 -5 V 19 +5 V 20 +5 V

1.16.2 Auxiliary Power Supply Connector

Table 29. Auxiliary Power Supply Connector

(J1M2)

Pin Signal Name

1 Ground 2 Ground 3 Ground 4 +3.3 V 5 +3.3 V 6 +5 V (keyed)

DK440LX Motherboard Technical Product Specification

1.16.3 Front Panel Connectors

The front panel connector includes headers for these connections:

• Speaker

• Reset switch

• Power/Sleep LED

• Hard disk drive activity LED

• Infrared

• Sleep switch

• Power on switch

J12E1

Speaker Reset

27 1

Power/Sleep

LED

HDD LED Sleep

Infrared

Power

OM06274

Figure 8. Front Panel I/O Connectors

Motherboard Description

Table 30. Front Panel I/O Connectors

Connector Pin Signal Name Connector Pin Signal Name

Speaker 27 SPKR_HDR Infrared 11 IRLS1

26 PIEZO_IN 10 Ir TX 25 Key 9 Ground 24 Ground 8 Ir RX

Reset 23 SW_RST 7 Key

22 Ground 6 +5 V 21 Key 5 Key

Power/Sleep LED 20 PWR_LED Sleep/Resume

Switch

19 Key 3 SLEEP 18 PWR_LED Power On 2 Ground

17 Key 1 SW_ON#

Hard Drive LED 16 HD_PWR

15 HD Active# 14 Key 13 HR_PWR

4 SLEEP_PU (pullup)

12 Key

1.16.3.1 Speaker

The onboard piezo speaker is enabled by a jumper on pins 26-27 of the front panel connector. The onboard speaker can be disabled by removing the jumper, and an offboard speaker can be connected in its place. The speaker (onboard or offboard) provides error beep code information during the POST in the event that the computer cannot use the video interface. The speaker is not connected to the audio subsystem and does not receive output from the audio subsystem.

1.16.3.2 Reset

This header can be connected to a momentary SPST type switch that is normally open. When the switch is closed, the motherboard resets and runs the POST.

1.16.3.3 Power/Sleep LED

This header can be connected to multicolor LED that lights when the computer is powered on or in sleep mode. The possible states for this LED are:

LED State Indication

Off Power off Green Power on Yellow Sleep

Header J12D1 can be used in the same manner as this front panel header. See Table 27 for the pinout for J12D1.

DK440LX Motherboard Technical Product Specification

1.16.3.4 Hard Drive LED

This header can be connected to an LED to provide a visual indicator that data is being read from or written to an IDE or SCSI hard drive, as well as add-in cards that provide an activity signal. For the LED to function properly, the IDE drive must be connected to the onboard IDE controller. This LED will also show activity for devices connected to the hard drive LED header.

1.16.3.5 Infrared Connector

Serial Port 2 can be configured to support an IrDA module connected to the front panel infrared connector. After the IrDA interface is configured, files can be transferred to or from portable devices such as laptop computers, PDAs, and printers using application software.

1.16.3.6 Sleep/Resume Switch

When APM is enabled in the system BIOS, and the operating system’s APM driver is loaded, the system can enter sleep (standby) mode in one of the following ways:

• Optional front panel sleep/resume button

• Prolonged system inactivity using the BIOS inactivity timer feature (see Section 4.5)

The 2-pin header located on the front panel I/O connector supports a front panel sleep/resume switch, which must be a momentary SPST type that is normally open.

Closing the sleep/resume switch sends a System Management Interrupt (SMI) to the processor, which immediately goes into System Management Mode (SMM). While the computer is in sleep mode it is fully capable of responding to and servicing external interrupts (such as an incoming fax) even though the monitor turns on only if a keyboard or mouse interrupt occurs. The yellow LED lights when the computer is in sleep mode. To reactivate or resume the system, the sleep/resume switch must be pressed again, or the keyboard or mouse must be used.

1.16.3.7 Power On Connector

This header can be connected to a front panel power switch. Because of debounce circuitry on the motherboard, the switch must pull the SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or off. At least two seconds must pass before the power supply will recognize another on/off signal.

CAUTION

If you need to turn off the computer during POST, hold the power switch in for four seconds; otherwise the computer will not switch off.

1.16.4 Back Panel Connectors

Figure 9 shows the location of the back panel I/O connectors, which include:

• PS/2-style keyboard and mouse connectors

• Two USB connectors

• LAN connector with connection and activity status LEDs (optional)

• External audio jacks: Line In, Line Out, and Mic In (optional)

• Two serial ports

• One parallel port

Motherboard Description

Mouse

USB 1

Keyboard Serial

USB 0

Port 1

Figure 9. Back Panel I/O Connectors

Parallel Port

Serial Port 2

Line In

LAN Mic In

Line Out

OM06272

DK440LX Motherboard Technical Product Specification

Table 31. PS/2 Keyboard/Mouse Connectors

Pin Signal Name

1 Data 2 No connect 3 Ground 4 +5 V (fused) 5 Clock 6 No connect

Table 32. USB Connectors

Pin Signal Name

1 Power (fused) 2 USBP0# [USBP1#] 3 USBP0 [USBP1] 4 Ground

Table 33. Serial Port Connectors

Pin Signal Name

1 DCD 2 Serial In# 3 Serial Out# 4 DTR# 5 Ground 6 DSR# 7 RTS# 8 CTS# 9 RI#

Table 34. Audio Line Out Connector

Pin Signal Name

Sleeve Ground Tip Audio Left Out Ring Audio Right Out

Table 35. Audio Line In Connector

Pin Signal Name

Sleeve Ground Tip Audio Left In Ring Audio Right In

Table 36. Audio Mic In Connector

Pin Signal Name

Sleeve Ground Tip Mono In Ring Electret Bias Voltage

Table 37. Parallel Port Connector

Pin Signal Name Pin Signal Name

1 Strobe# 14 Auto Feed# 2 Data bit 0 15 Fault# 3 Data bit 1 16 INIT# 4 Data bit 2 17 SLCT IN# 5 Data bit 3 18 Ground 6 Data bit 4 19 Ground 7 Data bit 5 20 Ground 8 Data bit 6 21 Ground 9 Data bit 7 22 Ground 10 ACK# 23 Ground 11 Busy 24 Ground 12 Error 25 Ground 13 Select

Motherboard Description

Table 38. LAN Connector

Pin Signal Name

1 TX+ 2 TX3 RX+ 4 No connect 5 No connect 6 RX7 No connect 8 No connect

DK440LX Motherboard Technical Product Specification

1.16.5 Add-in Board Expansion Connectors

There are three PCI slots, one ISA slot, and one shared slot (for a PCI or ISA card). The PCI bus supports up to four bus masters through the four PCI connectors (see Section 7.2 for information about compliance with the PCI specification). Note that all the PCI slots are bus master slots.

Table 39. PCI Bus Connectors

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

A1 +5 V (TRST#)* B1 -12 V A32 AD16 B32 AD17 A2 +12 V B2 Ground (TCK)* A33 +3.3 V B33 C/BE2# A3 +5 V (TMS)* B3 Ground A34 FRAME# B34 Ground A4 +5 V (TDI)* B4 no connect (TDO)* A35 Ground B35 IRDY# A5 +5 V B5 +5 V A36 TRDY# B36 +3.3 V A6 INTA# B6 +5 V A37 Ground B37 DEVSEL# A7 INTC# B7 INTB# A38 STOP# B38 Ground A8 +5 V B8 INTD# A39 +3.3 V B39 LOCK# A9 Reserved B9 PRSNT1# A40 SDONE B40 PERR# A10 +5 V (I/O) B10 Reserved A41 SBO# B41 +3.3 V A11 Reserved B11 PRSNT2# A42 Ground B42 SERR# A12 Ground B12 Ground A43 PAR B43 +3.3 V A13 Ground B13 Ground A44 AD15 B44 C/BE1# A14 Reserved B14 Reserved A45 +3.3 V B45 AD14 A15 RST# B15 Ground A46 AD13 B46 Ground A16 +5 V (I/O) B16 CLK A47 AD11 B47 AD12 A17 GNT# B17 Ground A48 Ground B48 AD10 A18 Ground B18 REQ# A49 AD09 B49 Ground A19 PME# B19 +5 V (I/O) A50 Key B50 Key A20 AD30 B20 AD31 A51 Key B51 Key A21 +3.3 V B21 AD29 A52 C/BE0# B52 AD08 A22 AD28 B22 Ground A53 +3.3 V B53 AD07 A23 AD26 B23 AD27 A54 AD06 B54 +3.3 V A24 Ground B24 AD25 A55 AD04 B55 AD05 A25 AD24 B25 +3.3 V A56 Ground B56 AD03 A26 IDSEL B26 C/BE3# A57 AD02 B57 Ground A27 +3.3 V B27 AD23 A58 AD00 B58 AD01 A28 AD22 B28 Ground A59 +5 V (I/O) B59 +5 V (I/O) A29 AD20 B29 AD21 A60 REQ64C# B60 ACK64C# A30 Ground B30 AD19 A61 +5 V B61 +5 V A31 AD18 B31 +3.3 V A62 +5 V B62 +5 V

* These signals (in parentheses) are optional in the PCI specification and are not currently implemented.

Motherboard Description

Table 40. ISA Bus Connectors

Pin Signal Name Pin Signal Name

B1 Ground A1 IOCHK# (IOCHCK#) B2 RESET (RESDRV) A2 SD7 B3 +5 V A3 SD6 B4 IRQ9 A4 SD5 B5 -5 V A5 SD4 B6 DRQ2 A6 SD3 B7 -12 V A7 SD2 B8 SRDY# (NOWS#) A8 SD1 B9 +12 V A9 SD0 B10 Ground A10 IOCHRDY (CHRDY) B11 SMEMW# (SMWTC#) A11 AEN B12 SMEMR# (SMRDC#) A12 SA19 B13 IOW# (IOWC#) A13 SA18 B14 IOR# (IORC#) A14 SA17 B15 DACK3# A15 SA16 B16 DRQ3 A16 SA15 B17 DACK1# A17 SA14 B18 DRQ1 A18 SA13 B19 REFRESH# A19 SA12 B20 BCLK A20 SA11 B21 IRQ7 A21 SA10 B22 IRQ6 A22 SA9 B23 IRQ5 A23 SA8 B24 IRQ4 A24 SA7 B25 IRQ3 A25 SA6 B26 DACK2# A26 SA5 B27 TC A27 SA4 B28 BALE A28 SA3 B29 +5 V A29 SA2 B30 OSC A30 SA1 B31 Ground A31 SA0 Key Key D1 MEMCS16# (M16#) C1 SBHE# D2 IOCS16# (IO16#) C2 LA23 D3 IRQ10 C3 LA22

Note: Items in parentheses are alternate versions of signal names.

continued

☛

DK440LX Motherboard Technical Product Specification

Table 40. ISA Bus Connectors

Pin Signal Name Pin Signal Name

D4 IRQ11 C4 LA21 D5 IRQ12 C5 LA20 D6 IRQ15 C6 LA19 D7 IRQ14 C7 LA18 D8 DACK0# C8 LA17 D9 DRQ0 C9 MEMR# (MRDC#) D10 DACK5# C10 MEMW# (MWTC#) D11 DRQ5 C11 SD8 D12 DACK6# C12 SD9 D13 DRQ6 C13 SD10 D14 DACK7# C14 SD11 D15 DRQ7 C15 SD12 D16 +5 V C16 SD13 D17 Master16# (MASTER#) C17 SD14 D18 Ground C18 SD15

Note: Items in parentheses are alternate versions of signal names.

(continued)

Motherboard Description

1.17 Connector Part Numbers

This section lists the manufacturer’s part numbers for the connectors and jumper blocks on the motherboard.

Table 41. Connector/Jumper Block Part Numbers

Connector Description Manufacturer* Part Number

J0A1 Chassis security Foxconn/Hon Hai HF06020-P1 J0A2 ISA Foxconn/Hon Hai EQ04901-S0 J0A3 ISA Foxconn/Hon Hai EQ04901-S0 J0E1 ATAPI telephony AMP 104450-3 J0F1 Mic In Foxconn/Hon Hai JA1333L-100 J0F2 ATAPI Line In AMP 104450-3 J0G1 Line In/Line Out Hesiden HSJ1001-01-1010 J0H1 Ethernet AMP 406549-4 J0J1 Serial Foxconn/Hon Hai DM10126-R9 J0J2 Parallel Foxconn/Hon Hai DM1356-R1 J0K1 Serial Foxconn/Hon Hai DM10126-R9 J0L1 USB Foxconn/Hon Hai UB1112C-D1 J0M1 PS/2 mouse and keyboard Foxconn/Hon Hai MH11067-D2 J1B1 PCI Foxconn/Hon Hai EH06011-PC-W J1C1 PCI Foxconn/Hon Hai EH06011-PC-W J1D1 PCI Foxconn/Hon Hai EH06011-PC-W J1D2 PCI Foxconn/Hon Hai EH06011-PC-W J1E1 2 mm CD audio Foxconn/Hon Hai HF55040-P1 J1E2 Serial port 2 Foxconn/Hon Hai Hc1905G-P3 J1F1 ATAPI CD audio AMP 104450-3 J1M1 CPU 1 fan Foxconn/Hon Hai HF08030-P1 J1M2 Auxiliary power supply Foxconn/Hon Hai HZ50060-P4 J2E1 Rear chassis fan Foxconn/Hon Hai HF08030-P1 J2E2 MIDI/game port Foxconn/Hon Hai EQ04901-50 J2E3 A.G.P. AMP 145263-1 J3F2 CPU 2 fan Foxconn/Hon Hai HF08030-P1 J4D1 Raid J5G1 DIMM Foxconn/Hon Hai AT08413-K8 J5M1 Power supply Foxconn/Hon Hai HC1919G-L2 J6D1 Wake on LAN Foxconn/Hon Hai HF57030-C1 J6G1 DIMM Foxconn/Hon Hai AT08413-K8

port

Framatome Connectors, USA CEE2X30SBC

continued

☛

DK440LX Motherboard Technical Product Specification

Table 41. Connector/Jumper Block Part Numbers

Connector Description Manufacturer* Part Number

J6G2 DIMM Foxconn/Hon Hai AT08413-K8 J6G3 DIMM Foxconn/Hon Hai AT08413-K8 J7E1 Configuration jumper Foxconn/Hon Hai HB1903G J8F1 IDE AMP 2540-60Y2UG J8F2 Floppy drive AMP 2540-60V2UG J9A1 Wake on modem Foxconn/Hon Hai HF06020-P1 J9F1 IDE AMP 2540-60Y2UG J10A1 HD LED (2 pin) Foxconn/ Hon Hai HF06020-P1 J10D1 16-bit SCSI Foxconn/ Hon Hai QA01343-P4 J10E1 8-bit SCSI Foxconn/ Hon Hai HL03257 J10F1 16-bit SCSI Foxconn/ Hon Hai QA01343-P4 J11B1 HD LED (4 pin) Foxconn/ Hon Hai HF08040-O1 J12A1 Front chassis 1 fan Foxconn/ Hon Hai HF08030-P1 J12B2 Front chassis 2 fan Foxconn/ Hon Hai HF08030-P1 J12D1 Sleep LED Foxconn/Hon Hai HB1903G J12E1 Front panel Molex 22-05-3277 Slot 1 (2) Processor AMP 145251

* Or equivalent.

(continued)

Motherboard Description

1.18 Jumper Settings

The system configuration jumper block (J7E1) requires a single jumper to set the configuration mode for the Setup program. This allows all motherboard configuration to be done in Setup. Figure 10 shows the location of the configuration jumper block on the motherboard.

J7E1

OM06335

Figure 10. Configuration Jumper Block

Table 42. System Configuration Jumper Settings

Function Jumper J7E1 Configuration

Normal 1-2 The BIOS uses current configuration information and passwords for booting.

(default)

Configure 2-3 After the POST runs, Setup runs automatically. The maintenance menu is

displayed.

Recovery none The BIOS attempts to recover the BIOS from a floppy disk. A recovery

diskette is required.

CAUTION

Do not move the jumper with the power on. Always turn off the power and unplug the power cord from the computer before changing the jumper.

DK440LX Motherboard Technical Product Specification

NOTE

✏

There is no jumper setting for configuring the processor speed or bus frequency. The feature for configuring the processor speed is in the Setup program using configure mode. See Section 1.18.2 for information about configure mode.

1.18.1 Normal Mode

This mode is for normal computer booting and operations. Connect pins 1 and 2 with a jumper on the configuration jumper block (J7E1) to enable the mode. The BIOS uses the current bus/processor frequency ratio, configuration information, and passwords to boot the computer. Access to the Setup program can be restricted using a supervisor or user password.

In normal mode, the BIOS attempts an automatic recovery if the configuration information in flash memory is corrupted.

1.18.2 Configure Mode

This mode is for configuring the processor speed and clearing passwords. Connect pins 2 and 3 with a jumper on the configuration jumper block (J7E1) to enable the mode. In this mode, Setup automatically executes after the POST runs, and no password is required. Setup provides the Maintenance menu with options for setting the processor speed and clearing passwords. All other Setup screens are also available. Configure mode uses the default BIOS settings for booting, not the current user or supervisor settings. The default settings include the lowest bus/processor frequency ratio the processor supports. When the computer is rebooted, Setup uses the original user and supervisor settings with the exception of the options that were changed.

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 1.18.1), and boot the computer.

In configure mode, the BIOS attempts an automatic recovery if the configuration information flash memory is corrupted.

1.18.3 Recovery Mode

This mode is for recovering BIOS data. Remove the jumper (no pins connected) from the configuration jumper block (J7E1) to enable this mode. After the computer is powered-on, the BIOS attempts to upgrade or recover the BIOS data from a diskette in the floppy drive. If the recovery fails with a diskette in the boot drive, a beep code indicates that the recovery failed (see Table 77). If a diskette is not in the boot drive, the BIOS attempts to run the POST, does not boot the operating system, and displays a message that the jumper is not properly installed.

For the configuration changes to take effect after a successful recovery, power down the computer, set the configuration jumper to normal mode (see Section 1.18.1), and boot the computer.

Motherboard Description

1.19 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 can be used when:

• Redesigning the motherboard for alternate components if failure rates exceed reliability

expectations

• Estimating repair rates and spare parts requirements MTBF data is calculated from predicted data @ 55 °C. The MTBF prediction for the motherboard is 85051 hours.

1.20 Environmental Specifications

Table 43. Environmental Specifications

Parameter Specification Temperature

Nonoperating Operating

Shock

Unpackaged 50 G trapezoidal waveform

Packaged Half sine 2 millisecond

Vibration

Unpackaged 5 Hz to 20 Hz : 0.01g² Hz sloping up to 0.02 g² Hz

Packaged 10 Hz to 40 Hz : 0.015g² Hz (flat)

-40 °C to +70 °C 0 °C to +55 °C

Velocity change of 170 inches/sec

Product Weight

<20 lbs 36 167 21-40 lbs 30 152 41-80 lbs 24 136 81-100 lbs 18 118

20 Hz to 500 Hz : 0.02g² Hz (flat)

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

Free Fall (inches) Velocity Change (inches/sec)

DK440LX Motherboard Technical Product Specification

1.21 Power Consumption

Table 44 lists the power specifications for a computer that contains a motherboard with one 266 MHz Pentium II processor, 64 MB SDRAM, a 3.5-inch floppy drive, a Quantum Fireball

6.4 GB Ultra ATA hard drive, a Sony CDU-611 24X IDE CD-ROM, and an ATI 3D Rage Pro A.G.P. graphics card. 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 1024 x 768 x 256 colors and 70 Hz refresh rate. AC watts are measured with a typical 250 W supply, nominal input voltage and frequency, with true RMS wattmeter at the line input.

Table 44. Power Usage

Mode Watts (AC) Out of 110 VAC Wall Outlet

Windows 95 desktop, APM disabled 51 watts Windows 95 desktop, APM enabled, in SMM 46 watts

1.22 Power Supply Considerations

For typical configurations, the motherboard is designed to operate with at least a 250 W power supply (see Section 7.2 for the ATX specification). A higher-wattage power supply should be used for heavily-loaded configurations. The power supply must comply with the following recommendations found in the indicated sections of that specification:

• The potential relation between 3.3VDC and +5VDC power rails (Section 4.2)

• The current capability of the +5VSB line (Section 4.2.1.2)

• All timing parameters (Section 4.2.1.3)

†

Table 45 lists the DC voltage for the motherboard.

Table 45. DC Voltage Tolerances

DC Voltage Acceptable Tolerance

✏

+3.3 V +5 V +5 VSB (standby)

-5 V +12 V

-12 V

NOTE

10%

Some heavily loaded configurations could require additional +3.3 V and +5 V power for peripherals. Use the auxiliary power connector at J1M2 for this purpose.

Motherboard Description

1.23 Thermal Considerations

Table 46 provides maximum component case temperatures for motherboard components that could be sensitive to thermal changes. Case temperatures could be affected by the operating temperature, current load, or operating frequency. Maximum case temperatures are important when considering proper airflow to cool the motherboard.

CAUTION

An ambient temperature that exceeds the board’s maximum operating temperature by 5 oC to 10 oC might cause components to exceed their maximum case temperature. For information about the maximum operating temperature, see the environmental specifications in Section 1.20.

Table 46. Thermal Considerations for Components

Component Maximum Case Temperature Motherboard Location

Pentium II processor 72 oC at 300 MHz (thermal plate) Slot 1 connectors Intel 82443LX (PAC) 100 oC U2H1 Intel 82371AB (PIIX4) 85 oC U8E1

1.24 Regulatory Compliance

This section describes the safety and Electromagnet Compatibility (EMC) standards and regulations with which the DK440LX motherboard complies.

1.24.1 Safety

This printed circuit assembly complies with the following safety regulations when correctly installed in a compatible host system. Certification reports for this printed circuit assembly are maintained under File E139761, Vol. 11, Sec. 2.

1.24.1.1 UL 1950 - CSA 950-95, 3rd edition, Dated July 28, 1995

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

1.24.1.2 UL Classified to IEC 950

See Section 1.24.1.3.

1.24.1.3 IEC 950, 2nd edition (with Amendments 1-4)

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

DK440LX Motherboard Technical Product Specification

1.24.2 Electromagnetic Compatibility (EMC)

This printed circuit assembly complies with the following EMC regulations when correctly installed in a compatible host system.

NOTE

✏

To comply with FCC Class B and other worldwide EMI regulatory requirements, it might be necessary to install an EMI gasket behind the I/O shield (covering the audio connectors). See Section 1.5, Figure 3 for additional information.

1.24.2.1 CFR 47, Parts 2 and 15

Title 47, Code of Federal Regulations; General Rules and Regulations, Radio Frequency Devices. Product compliance is verified using limits from CSIPR 22 (frequencies to 1 GHz), FCC Rules, Section 15.109(a) (frequencies above 1 GHz), and test criteria as defined in ANSI C63.4 and FCC Rules, Section 15.32(a).

1.24.2.2 CISPR 22 / EN 55 022, Dated 1993/1995, Class B

Limits and methods of measurement of Radio Interference Characteristics of Information Technology Equipment (International/Europe).

1.24.2.3 EN 50 082-1, Dated 1992

Generic Immunity Standard. Currently compliance is determined via testing to IEC 801-2, -3, and -4 (Europe).

1.24.3 Product Certification Markings

This printed circuit assembly has the following product certification markings:

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

• UL Recognition Mark: UL Safety certification is identified with the UL File No. E139761 on

the component side of the motherboard and the PB number on the solder side of the motherboard. Motherboard material flammability is compliant with UL 94 and is rated V-1 or V-0.

• FCC Compliance: Consists of the Declaration of Conformity label, located between C8K1 and

C8K2 on the motherboard.

• Canadian Compliance: Consists of small c followed by a stylized backward UR on the

component side of the motherboard.

2 Motherboard Resources

NOTE

✏

For more detailed information about the resources used for onboard audio, see Section 1.10.

2.1 Memory Map

Table 47. Memory Map

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

1024 K - 1048576 K 100000 - 3FFFFFFF 1023 MB Extended memory (EDO memory) 1024 K - 524288 K 100000 - 1FFFFFFF 511 MB Extended memory (SDRAM) 928 K - 1024 K E8000 - FFFFF 96 KB System BIOS 800 K - 928 K C8000 - E7FFF 128 KB Available high DOS memory (open to ISA

and PCI bus) 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

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

2.2 DMA Channels

Table 48. 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 Floppy drive 3 8 or 16 bits Parallel port (for ECP)/audio 4 Reserved - cascade channel 5 16 bits Open 6 16 bits Open 7 16 bits Open

DK440LX Motherboard Technical Product Specification

2.3 I/O Map

Table 49. 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 Super 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 0200 - 0207 8 bytes Audio / game port 0220 - 022F 16 bytes Audio (Sound Blaster compatible) 0240 - 024F 16 bytes Audio (Sound Blaster compatible) 0278 - 027F 8 bytes LPT2 0290 - 0297 8 bytes Hardware monitor 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 1 byte Floppy channel 2 command 0377, bit 7 1 bit Floppy disk change, channel 2 0377, bits 6:0 7 bits Secondary IDE channel status port

continued

☛

Motherboard Resources

Table 49. I/O Map

(continued)

Address (hex) Size Description

0378 - 037F 8 bytes LPT1 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 Floppy Channel 1 03F6 1 byte Primary IDE channel command port 03F7 (Write) 1 byte Floppy channel 1 command 03F7, bit 7 1 bit Floppy disk 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 0FF0 - 0FF7 8 bytes CS4236B audio control 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

007C, bits 5:4 2 bits Chassis fan RPM sense selection (see Figure 4)

* DWORD access only ** Byte access only

DK440LX Motherboard Technical Product Specification

2.4 PCI Configuration Space Map

Table 50. PCI Configuration Space Map

Bus Number (hex)

00 00 00 Intel 82443LX (PAC) 01 00 00 Intel 82371AB (PAC) A.G.P. bus 00 02 00 Intel 82371AB (PIIX4) PCI/ISA bridge 00 02 01 Intel 82371AB (PIIX4) IDE bus master 00 02 02 Intel 82371AB (PIIX4) USB 00 02 03 Intel 82371AB (PIIX4) power management 00 03 00 Ethernet 00 09 00 SCSI 00 0D 00 PCI expansion slot 1 (J1D2) 00 0E 00 PCI expansion slot 2 (J1D1) 00 0F 00 PCI expansion slot 3 (J1C1) 00 10 00 PCI expansion slot 4 (J1B1)

Device Number (hex)

2.5 Interrupts

Table 51. 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 Floppy drive 7 LPT1* 8 Real time clock 9 Reserved 10 Windows Sound System* 11 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 and onboard PCI devices. The PCI specification specifies how interrupts can 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.

The PIIX4 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 52 lists the PIRQ signals and shows how the signals are connected to the PCI expansion slots and to onboard PCI interrupt sources.

Table 52. PCI Interrupt Routing Map

PIIX4 PIRQ Signal

PIRQA PIRQB PIRQC PIRQD

First PCI Expansion Slot: J1D2

INTD INTC INTB INTA INTA X INTA INTD INTC INTB INTB X INTB INTA INTD INTC INTC INTB INTA INTD X X

Second PCI Expansion Slot: J1D1

Third PCI Expansion Slot: J1C1

Fourth PCI Expansion Slot: J1B1 A.G.P. USB LAN SCSI

Power Mgmt

For example, assume an add-in card has one interrupt (group INTA) into the second PCI slot (J1D1). In this slot, an interrupt source from group INTA connects to the PIRQC signal, which is not connected to any onboard interrupt sources. If there are no other add-in cards, this card does not share its interrupt with any other devices.

Now, however, plug a second add-in card that has two interrupts (group INTA and INTB) into the first PCI slot (J1D2). INTA in the first slot is connected to signal PIRQB and INTB is connected to signal PIRQC. Therefore, the second device on the two-function add-in card in the first slot will share its interrupt with the single-function card in the second slot. In addition, the first device on the two-function add-in card in the first slot will share its interrupt with the on-board SCSI controller and second device on a multi-function A.G.P. add-in card.

DK440LX Motherboard Technical Product Specification

NOTE

✏

The PIIX4 can connect each PIRQ line internally to one of the IRQ signals (3, 4, 5, 7, 9, 10, 11, 12, 14, or 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. In the presence of an SMP operating system, the IOAPIC is used instead of the PIIX4 to distribute interrupts.

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), the PCI autoconfiguration utility, and Windows 95-ready Plug and Play code.

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 the revision code. The initial production BIOS is identified as 4D4KL0X0.86A.

3.1 BIOS Upgrades

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 7.1 for information about this site.

NOTE

✏

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

DK440LX Motherboard Technical Product Specification

3.2 BIOS Flash Memory Organization

The Intel E28F400B5 4-Mbit flash component is organized as 512 KB x 8 bits and is divided into areas as described in Table 53. The table shows the addresses in the ROM image in normal mode (the addresses change in BIOS Recovery Mode).

Table 53. Flash Memory Organization

Address (Hex) Size Description

FFFFC000 - FFFFFFFF 16 KB Boot Block FFFFA000 - FFFFBFFF 8 KB Vital Product Data (VPD) Extended System Configuration Data

(ESCD) (DMI configuration data / Plug and Play data) FFFF9000 - FFFF9FFF 4 KB Used by BIOS (e.g., for Event Logging) FFFF8000 - FFFF8FFF 4 KB OEM logo or Scan Flash Area FFF80000 - FFFF7FFF 480 KB Main BIOS Block

3.3 Plug and Play: PCI Autoconfiguration

The BIOS can be set to automatically configure 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 can automatically configure 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 dependent upon a number of factors including type and number of add-in cards, slot selection, and operating system. Any change to the hardware or system software configuration can cause a change to the interrupt configuration of existing devices. 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 7.2. Copies of the specifications can be obtained from the Intel World Wide Web site (see Section 7.1).

Overview of BIOS Features

3.4 PCI IDE Support

If Auto is selected as a primary or secondary IDE device (see Section 4.2.2) in Setup, the BIOS automatically sets up the two local-bus IDE connectors with independent I/O channel support. The IDE interface supports PIO Mode 3, PIO Mode 4, and Ultra DMA hard drives and recognizes any ATAPI devices, including CD-ROM drives, tape drives, and LS-120 diskette drives (see Section 7.2 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 drives are automatically configured for logical block addressing (LBA) and to PIO Mode 3, PIO Mode 4, or Ultra DMA 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 54.

Table 54. Recommendations for Configuring an ATAPI Device

Primary Cable Secondary Cable

Configuration

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

Drive 0 Drive 1 Drive 0 Drive 1

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 and PCI cards that are required for booting (IPL devices). If Plug & Play OS is not selected in Setup, the BIOS autoconfigures all Plug and Play ISA and PCI cards.

NOTE

✏

With Plug & Play OS selected in Setup, PCI or PnP add-in cards that are not required for booting will not be available unless they are initialized and assigned resources by the operating system or other program.

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 or with an ISA configuration utility. The ISA configuration utility can be downloaded from the Intel World Wide Web site (see Section 7.1).

DK440LX Motherboard Technical Product Specification

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 LANDesk 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

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 7.1 for information about contacting a local Intel sales office. See Section 7.2 for information about the latest DMI specification.



Client Manager to use DMI.

DMI does not work directly under non-Plug and Play operating systems (e.g., 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 OS can access the DMI BIOS information.

3.8 Advanced Power Management (APM)

The BIOS supports APM and standby mode. See Section 7.2 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/resume 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 drives, and reducing power to or turning off VESA monitors. Power-management mode can be enabled or disabled in Setup (see Section 4.5).

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

Overview of BIOS Features

3.9 Language Support

Five languages are available: American English, German, Italian, French, and Spanish. The default language is American English, which is 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.

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.

3.10 Boot Options

In the Setup program, the user can choose to boot from a floppy drive, hard drive, CD-ROM, or the network. The default setting is for the floppy drive to be the primary boot device and the hard 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 7.2 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.

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. The LANDesk Service Agent can be used to perform service boots if the network is equipped with a suitable LANDesk Configuration Manager server.

3.11 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 Intel to assist with installing a logo into the flash memory. Contact Intel customer support for further information. See Section 7.1 for information on contacting Intel customer support.

3.12 USB Legacy Support

USB legacy support enables USB keyboards and mice to be used even when no operating system USB drivers are in place. By default, USB legacy support is disabled. USB legacy support is only intended to be used in accessing BIOS Setup and installing an operating system that supports USB.

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).

DK440LX Motherboard Technical Product Specification

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 an operating system that supports USB, 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.

Notes on using USB legacy support:

• If USB legacy support is enabled, don't mix USB and PS/2 keyboards and mice. For example, do not use a PS/2 keyboard with a USB mouse, or a USB keyboard and a PS/2 mouse.

• Do not use USB devices with an operating system that does not support USB. USB legacy is not intended to 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.

3.13 BIOS Security Features

The BIOS includes security features that restrict access to the BIOS Setup program and who can boot the computer. A supervisor password and a user password can be set for the Setup program and for booting the computer, with the following restrictions:

• The supervisor password gives unrestricted access to view and change all the Setup options in the Setup program. This is supervisor mode.

• The user password gives restricted access to view and change Setup options in the Setup program. This is user mode.

• If only the supervisor password is set, pressing the <Enter> key at the password prompt of the Setup program allows the user restricted access to Setup.

• If both the supervisor and user passwords are set, users can enter either the supervisor password or the user password to access Setup. Users have access to Setup respective to which password is entered.

• Setting the user password restricts who can boot the computer. The password prompt will be displayed before the computer is booted. If only the supervisor password is set, the computer boots without asking for a password. If both passwords are set, the user can enter either password to boot the computer.

Overview of BIOS Features

Table 55 shows the effects of setting the supervisor password and user password. This table is for reference only and is not displayed on the screen.

Table 55. Supervisor and User Password Functions

Supervisor

Password Set

Neither Can change all

Supervisor only

User only N/A Can change all

Supervisor and user set

* If no password is set, any user can change all Setup options.

Mode User Mode Setup Options

options * Can change all

options

Can change all options

Can change all options *

Can change a limited number of options

options Can change a

limited number of options

None None None

Supervisor Password Supervisor None

Enter Password Clear User Password

Supervisor Password Enter Password

Password to Enter Setup

User User

Supervisor or user

See Section 4.4 for information about setting user and supervisor passwords.

3.14 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 1.18.3).

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 7.1 for information on contacting Intel customer support.

Password During Boot

Supervisor or user

NOTE

✏

If the computer is configured to boot from an LS-120 diskette (see Section 4.6), the BIOS recovery diskette must be a standard 1.44 MB diskette not a 120 MB diskette.

DK440LX 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 56 shows the menus available from the menu bar at the top of the Setup screen.

Table 56. 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 1.18.2 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 57 shows the function keys available for menu screens.

Table 57. Setup Function Keys

Setup Key Description

<F1> or <Alt-H> Brings up a help screen for the current item. <Esc> Exits the menu. <←> or <→> <↑> or <↓> <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. <+> or <-> Moves a device or class of devices up or down in the boot order.

Selects a different menu screen.

Moves cursor up or down.

DK440LX 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 1.18.2 for information about setting configure mode.

Table 58. Maintenance Menu

Feature Options Description

Processor Speed

Clear All Passwords No options Clears the user and supervisor passwords.

• 200

• 233

• 266

• 300

Specifies the processor speed in megahertz.

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 59. Main Menu

Feature Options Description

Processor 0 Type No options Displays processor type. Processor 1 Type No options Displays processor type. Processor Speed No options Displays processor speed. Cache RAM No options Displays size of second-level cache. Total Memory No options Displays the total amount of RAM on the motherboard. BIOS Version No options Displays the version of the BIOS. Language English (US) Selects the language used by the BIOS. System Time Hour, minute,

and second

System Date Month, day, and

year

Floppy Options, submenu

Primary IDE Master, submenu

Primary IDE Slave, submenu

Secondary IDE Master, submenu

Secondary IDE Slave, submenu

No option When selected, displays the Floppy Options submenu.

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

Specifies the current time.

Specifies the current date.

the Primary IDE Master submenu.

the Primary IDE Slave submenu.

the Secondary IDE Master submenu.

the Secondary IDE Slave submenu.

4.2.1 Floppy Options Submenu

This submenu is for configuring floppy drives.

Table 60. Floppy Options Submenu

Feature Options Description

Diskette A:

Diskette B:

Floppy Write Protect

• Disabled

• 360 KB, 5¼″

• 1.2 MB, 5¼″

• 720 KB, 3½″

• 1.44/1.25 MB, 3½″ (default)

• 2.88 MB, 3½″

• Disabled (default)

• 360 KB, 5¼″

• 1.2 MB, 5¼″

• 720 KB, 3½″

• 1.44/1.25 MB, 3½″

• 2.88 MB, 3½″

• Disabled (default)

• Enabled

BIOS Setup Program

Specifies the capacity and physical size of diskette drive A.

Specifies the capacity and physical size of diskette drive B.

Disables or enables write protect for the diskette drive(s).

DK440LX Motherboard Technical Product Specification

4.2.2 IDE Device Configuration Submenus

This submenu is for configuring IDE devices, including:

• Primary IDE master

• Primary IDE slave

• Secondary IDE master

• Secondary IDE slave

Table 61. IDE Device Configuration Submenus

Feature Options Description

Type

Cylinders 1 to Heads 1 to 16 Specifies number of disk heads. Sectors 1 to 64 Specifies number of disk sectors. Maximum Capacity No options Reports the maximum capacity for the hard disk.

Multi-Sector Transfers

LBA Mode Control

None

•

ATAPI Removable

•

CD-ROM

•

IDE Removable

•

Auto (default)

•

XXXX

Disabled

•

2 Sectors

•

4 Sectors

•

8 Sectors

•

16 Sectors (default)

•

Disabled

•

Enabled (default)

•

Specifies the IDE configuration mode for IDE devices.

IDE Removable allows the cylinders, heads, and sectors fields to be changed.

Auto automatically fills in the values for the cylinders, heads, and sectors fields.

Specifies number of disk cylinders.

Value calculated from number of cylinders, heads, and sectors.

Specifies number of sectors per block for transfers from the hard drive to memory.

Check the hard drive’s specifications for optimum setting.

Enables or disables logical block addressing (LBA) in place of the Cylinders, Heads, and Sectors fields.

Transfer Mode

Ultra DMA

Standard

•

Fast PIO 1

•

Fast PIO 2

•

Fast PIO 3

•

Fast PIO 4

•

FPIO 3 & Bus

•

Mastering

FPIO 4 & Bus

•

Mastering (default) Disabled (default)

•

Mode 0

•

Mode 1

•

Mode 2

•

CAUTION

Changing the LBA Mode Control after a hard drive has been formatted can corrupt data on the drive.

Specifies method for transferring data between the hard drive and system memory.

Specifies the ultra DMA mode for the hard drive.

4.3 Advanced Menu

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

Table 62. Advanced Menu

Feature Options Description

Plug & Play O/S

Reset Configuration Data

ECC Configuration

MPS Version

Memory Bank 0 Memory Bank 1 Memory Bank 2 Memory Bank 3

Resource Configuration, submenu

Peripheral Configuration, submenu

Keyboard Configuration, submenu

Video Configuration, submenu

DMI Event Logging, submenu

• No (default)

• Yes

• No (default)

• Yes

• Non-ECC

• ECC (default)

• 1.1

• 1.4 (default)

No options Specifies size and type of DIMM installed.

No options Configures memory blocks and IRQs for legacy ISA

No options Configures peripheral ports and devices. When

No options Configures keyboard features. When selected,

No options Configures video features. When selected, displays

No options Configures DMI Events Logging. When selected,

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

No 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 ECC memory configuration.

Configures the MP Specification revision level. Some operating systems may require revision 1.1.

devices. When selected, displays the Resource Configuration submenu.

selected, displays the Peripheral Configuration submenu.

displays the Keyboard Configuration submenu.

the Video Configuration submenu.

displays the DMI Events Logging submenu.

BIOS Setup Program

DK440LX Motherboard Technical Product Specification

4.3.1 Resource Configuration Submenu

This submenu is for configuring the memory and interrupts.

Table 63. 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

• Memory hole Disabled (default) | Conventional | Extended

• 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.

Memory hole frees address space in RAM for legacy ISA devices.

Reserves specific IRQs for use by legacy ISA devices.

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

4.3.2 Peripheral Configuration Submenu

This submenu is for configuring the computer peripherals.

Table 64. Peripheral Configuration Submenu

Feature Options Description

Serial port A

Serial port B

Mode

Parallel port

Mode

Floppy disk controller

IDE controller

• Disabled

• Enabled

• Auto (default)

• Disabled

• Enabled

• Auto (default)

• Normal (default)

• IrDA

†

• ASK-IR

• Disabled

• Enabled

• Auto (default)

• Output Only

• Bi-directional (default)

• EPP

• ECP (default)

• Disabled

• Enabled (default)

• Disabled

• Primary

• Secondary

• Both (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. 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.

Selects the mode for serial port B.

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. Selects the mode for the parallel port. Output Only operates in AT Bi-directional operates in bidirectional PS/2-compatible

mode. EPP is Extended Parallel Port mode, a high-speed

bidirectional mode. ECP is Enhanced Capabilities Port mode, a high-speed

bidirectional mode. Configures the floppy disk controller.

Configures the IDE controller. Both specifies both the primary and secondary the

primary and secondary channel are used.

†

or an

BIOS Setup Program

ATI mach64

†

-compatible mode.

†

video controller is

continued

☛

DK440LX Motherboard Technical Product Specification

Table 64. Peripheral Configuration Submenu

Feature Options Description

Audio

Hardware Monitor

LAN

SCSI Controller

Channel B Termination

• Disabled

• Enabled (default)

• Disabled

• Enabled (default)

• Disabled

• Enabled (default)

• Disabled

• Enabled (default)

• Disabled

• Enabled (default)

(continued)

Enables or disables the onboard audio subsystem.

Enables or disables the onboard hardware monitor device.

Enables or disables the LAN.

Enables or disables the onboard SCSI controller.

Select “Enabled” when using 16 bit devices only. Select “Disabled” when mixing 8 and 16 bit devices.

CAUTION

Select “Enabled” if no devices are connected.

4.3.3 Keyboard Configuration Submenu

This submenu is for configuring the keyboard.

Table 65. Keyboard Features Submenu

Feature Options Description

Numlock

Key Click

Keyboard auto-repeat rate

Keyboard auto-repeat delay

• Auto (default)

• On

• Off

• Disabled (default)

• Enabled

• 30/sec (default)

• 26.7/sec

• 21.8/sec

• 18.5/sec

• 13.3/sec

• 10/sec

• 6/sec

• 2/sec

• ¼ sec

• ½ sec (default)

• ¾ sec

• 1 sec

BIOS Setup Program

Specifies the power on state of the Numlock feature on the numeric keypad of the keyboard.

Enables the key click option.

Selects the key repeat rate.

Selects the delay before key repeat.

4.3.4 Video Configuration Submenu

This submenu is for configuring video features.

Table 66. Video Configuration Submenu

Feature Options Description

Palette Snooping

• Disabled (default)

• Enabled

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

DK440LX Motherboard Technical Product Specification

4.3.5 DMI Event Logging Submenu

This submenu is for configuring the DMI event logging features.

Table 67. 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 No options Enables viewing of DMI event log. Clear all DMI event logs

Event Logging

ECC Event Logging

Prompt on POST errors

Mark DMI events as read No options Marks all DMI events as read.

• No (default)

• Yes

• Disabled

• Enabled (default)

• Disabled (default)

• Enabled

• Disabled

• Enabled (default)

Clears the DMI Event Log after rebooting.

Enables logging of DMI events.

Enables logging of ECC events.

If enabled, the BIOS prompts for input if an error occurs during power up.

4.4 Security Menu

This menu is for setting passwords and security features.

Table 68. Security Menu

Feature Options Description

User Password Is No options Reports if there is a user password set. Supervisor Password Is No options Reports if there is a supervisor password set. Set User Password Password can be up to seven

alphanumeric characters.

Set Supervisor Password Password can be up to seven

alphanumeric characters. Clear User Password No options Pressing <Enter> clears the user password. User Setup Access

Unattended Start

• Disabled

• Enabled (default)

• Disabled (default)

• Enabled

Specifies the user password.

Specifies the supervisor password.

Enables or disables user access to the Setup program.

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 69. Power Menu

Feature Options Description

Power Management

Inactivity Timer

Hard Drive

VESA Video Power Down

• Disabled

• Enabled (default)

• Off (default)

• 1 Minute

• 2 Minutes

• 4 Minutes

• 6 Minutes

• 8 Minutes

• 12 Minutes

• 16 Minutes

• Disabled

• Enabled (default)

• Disabled

• Enabled (default)

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.

Enables power management for video during standby and suspend modes.

DK440LX Motherboard Technical Product Specification

4.6 Boot Menu

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

Table 70. Boot Menu

Feature Options Description

Restore on AC/Power Loss

On Modem Ring

On LAN

On PME

Quick Boot Mode

Scan User Flash Area

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

Hard Drive, submenu No options Lists available hard drives. When selected, displays the

Removable Devices, submenu

• Stay Off

• Last State

(default)

• Power On

• Stay Off (default)

• Power On

• Stay Off

• Power On (default)

• Stay Off

• Power On (default)

• Enabled

• Disabled (default)

• Enabled

• Disabled (default)

• Removable devices

• Hard Drive

• ATAPI CD-ROM

Drive

• Network boot

No options Lists available removable devices. When selected,

Specifies how the computer responds following a power failure.

Stay Off keeps power off until power button pressed. Last State restores previous power state before a power

failure. Power On restores power without restoring previous

power state. 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. Specifies how the computer responds to a PCI power

management enable event when the power is off. 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 boot sequence from the available devices.

To specify boot sequence:

1. Select the boot device with <↑> or <↓>.

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.

Hard Drive submenu.

displays the Removable Devices submenu.

4.6.1 Hard Drive Submenu

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

Table 71. Hard Drive Submenu

Options Description

• Installed hard drive

• Bootable ISA Cards

Specifies the boot sequence for the hard drives attached to the computer. To specify boot sequence:

1. Select the boot device with <↑> or <↓>.

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 72. Removable Devices Submenu

BIOS Setup Program

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 <↑> or <↓>.

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.

Table 73. Exit Menu

Feature Description

Exit Saving Changes Exits and saves the changes in CMOS RAM. Exit Discarding Changes Exits without saving any changes made in Setup. Load Setup Defaults Loads the 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.

DK440LX Motherboard Technical Product Specification

5 SCSI

Select

and SCSI Disk Utilities

5.1 SCSI

The integrated SCSISelect Utility enables you to:

• Modify the SCSI controller's configuration (including termination)

• Change SCSI device settings that conflict with other device settings

• Perform a low-level format on SCSI devices connected to the motherboard

To enter the SCSISelect Utility, boot the computer and press <Ctrl><A> when the following message appears:

Press <Ctrl><A> for SCSISelect(TM) Utility!

Table 74 provides an overview of the function keys in the SCSISelect Utility. Following Table 74 are descriptions of the options in each screen of the utility.

Table 74. Overview of the SCSI

Press To

ESC Go back to previous screen / Exit the utility Enter Select an option

↑ ↓

F5 Switch between color and monochrome F6 Reset to defaults

Select

Move to the previous field Move to the next field

Utility

Select

Keys

5.1.1 Main Screen

Before the main screen is displayed, you must first select which SCSI channel to configure, A or B. After you select the channel and press <enter>, the main screen is displayed.

5.1.1.1 Configure/View Host Adapter Settings

When selected, this brings up the Configuration Menu.

5.1.1.2 SCSI Disk Utilities

When selected, this brings up the SCSI Disk Utilities Menu.

5.1.2 Configuration Menu

NOTE

✏

In the utility, an asterisk (*) indicates the default setting for a field.

DK440LX Motherboard Technical Product Specification

5.1.2.1 Host Adapter SCSI ID

Specifies the SCSI ID of the host adapter. The options are ID 0–15. The default is ID 7. For proper operation, use the default.

5.1.2.2 SCSI Parity Checking

Enables or disables parity checking. When enabled, the host adapter checks parity when reading from the SCSI bus to verify the correct transmission of data from the SCSI devices. Select disabled if any SCSI devices attached to the chain do not support SCSI parity. The options are:

• Enabled (default)

• Disabled

5.1.2.3 Host Adapter SCSI Termination

Enables or disables SCSI termination on the motherboard. The options are:

• Enabled (default)

• Default

5.1.2.4 Boot Device Options

When selected, this brings up the Boot Device Configuration Menu.

5.1.2.5 SCSI Device Configuration

When selected, this brings up the SCSI Device Configuration Menu.

5.1.2.6 Advanced Configuration Options

When selected, this brings up the Advanced Configuration Options Menu.

5.1.3 Boot Device Configuration

5.1.3.1 Boot Channel

Specifies the SCSI channel from which to boot first.

• A First (default)

• B First

5.1.3.2 Boot SCSI ID

Specifies the SCSI ID of the device from which you wish to boot. The SCSI ID selected will be installed as drive C. The options are ID 0–15. The default is ID 0.

The SCSI ID selected here must correspond to the ID configured on the boot device.

Error Messages and Beep Codes

5.1.3.3 Boot LUN Number

Sets which LUN (Logical Unit Number) to boot from on your boot device if your boot device has multiple LUNs and Multiple LUN Support is enabled (see pg. 92, Multiple LUN support). The options are ID 0–7. The default is ID 0.

5.1.4 SCSI Device Configuration Menu

These settings enable you to configure each device on the SCSI bus. You must know the SCSI ID of the device you want to configure.

5.1.4.1 Initiate Sync Negotiation

When Yes is selected, the motherboard initiates synchronous negotiation with the SCSI device. When No is selected, the motherboard does not initiate synchronous negotiation. If the SCSI device initiates synchronous negotiation, the motherboard always responds. Select No if you are using an old SCSI I device at this ID. The options are:

• Yes (default)

• No

5.1.4.2 Maximum Sync Transfer Rate

Sets the maximum synchronous data transfer rate in MB/second. The motherboard supports synchronous data transfer rates up to the Ultra Fast SCSI maximum rate of 40 MB/sec. Select the lowest value if you are using an old SCSI I device. The options are:

• 40 (default)

• 32

• 26.8

• 20.0

• 16.0

• 13.4

• 10.0

5.1.4.3 Enable Disconnection

Sets whether the motherboard allows SCSI devices to disconnect from the SCSI bus. Enabling disconnection allows the motherboard to perform other operations on the SCSI bus while the SCSI device is temporarily disconnected. If two or more SCSI devices are connected to the host adapter, select Yes. The options are:

• Yes (default)

• No

DK440LX Motherboard Technical Product Specification

5.1.4.4 Initiate Wide Negotiation

Specifies whether the motherboard attempts 16-bit instead of 8-bit data transfer. Selecting Yes enables Fast/Wide SCSI-2 hard drives to achieve their highest performance. Selecting No specifies 8-bit data transfer unless the SCSI device requests wide negotiation. Select No if you are using an old SCSI I device. The options are:

• Yes (default)

• No

5.1.4.5 Send Start Unit Command

Specifies whether the Start Unit Command is sent to a SCSI device at boot. Selecting Yes reduces the load on the computer's power supply by allowing the host adapter to start SCSI devices one at a time. Most devices require you to set a jumper before the device can respond to this command. The options are:

• Yes

• No (default)

5.1.4.6 BIOS Multiple LUN Support

Enables or disables support for booting from a SCSI device that has multiple LUNs. Enable this option if your boot device has multiple LUNs (e.g., multiple partitions on a hard disk). This field is ignored if the Host Adapter BIOS is disabled. The options are:

• Enabled

• Disabled (default)

5.1.4.7 Include in BIOS Scan

Specifies whether a device is included in the SCSI BIOS scan at boot. Selecting No removes the device from the scan. The device will not be assigned a SCSI ID. This option can be useful when changing boot order or if a device has not been responding properly.

The options are:

• Yes (default)

• No

5.1.5 Advanced Configuration Options

5.1.5.1 Plug and Play SCAM Support

Enables or disables support for SCAM Level 1 and Level 2 SCSI devices. SCAM is a method that participating SCSI devices on a bus use to dynamically assign SCSI bus IDs. Some legacy devices cannot reside on a SCSI bus where SCAM protocols execute. Select Disabled if such a device is attached to the SCSI bus.

The options are:

• Enabled

• Disabled (default)

Error Messages and Beep Codes

5.1.5.2 Reset SCSI Bus at IC Initialization

Enables or disables support for resetting the SCSI bus when the computer is reset. The options are:

• Enabled (default)

• Disabled

5.1.5.3 Extended BIOS Translation for DOS Drives Larger than 1 GB CAUTION

All data on all connected hard drives is lost when you change from one setting to another.

Enables or disables extended translation for SCSI hard disks with capacities greater than 1 GB. This field is ignored if the Host Adapter BIOS is disabled. The options are:

• Enabled (default)

• Disabled

Use Extended BIOS Translation only with MS-DOS 5.0 or higher. You do not need to enable this option if you are using another operating system such as NetWare, OS/2, Windows NT, or UNIX

When you partition a disk larger than 1 GB, use the MS-DOS fdisk utility as you normally would. Because the cylinder size increases to 8 MB under extended translation, the partition size you choose must be a multiple of 8 MB. If you request a size that is not a multiple of 8 MB, fdisk rounds up to the nearest whole multiple of 8 MB.

†

5.1.5.4 Host Adapter BIOS

Enables or disables the host adapter BIOS. If you are booting from a SCSI disk drive connected to the motherboard, the Host Adapter BIOS must be enabled. Disable the Host Adapter BIOS if the peripherals on the SCSI bus (for example CD-ROM drives) are all controlled by device drivers and do not need the BIOS. The options are:

• Enabled (default)

• Disabled

NOTE

✏

Several of the following fields are ignored if the Host Adapter BIOS is Disabled.

5.1.5.5 Support Removable Disks Under BIOS as Fixed Disks CAUTION

If a removable-media SCSI device is controlled by the host adapter BIOS, do not remove the media while the drive is on or you could lose data! If you want to be able to remove media while the drive is on, install your removable-media device driver and set this option to Disabled.

Controls which removable-media drives are supported by the SCSI BIOS. This field is ignored if the Host Adapter BIOS is disabled. The options are:

• Boot Only (default) (Only the removable-media drive designated as the boot device is treated

as a hard disk drive)

• All Disks (All removable-media drives supported by the BIOS are treated as hard disk drives)

• Disabled (No removable-media drives are treated as hard disk drives. In this situation,

software drivers are needed because the drives are not controlled by the BIOS)

DK440LX Motherboard Technical Product Specification

5.1.5.6 Display <Ctrl><A> Message During BIOS Initialization NOTE

This option does not affect your ability to access the SCSISelect Utility. It only toggles the prompt.

Turns on (or off) the "Press <Ctrl> <A> for SCSISelect (TM) Utility!" prompt at boot. This field is ignored if the Host Adapter BIOS is disabled. The options are:

• Enabled (default)

• Disabled

5.1.5.7 BIOS Support for Bootable CD-ROM

Enables or disables support for booting from a CD-ROM drive. This field is ignored if the Host Adapter BIOS is disabled. The options are:

• Enabled (default)

• Disabled

5.1.5.8 BIOS Support for Int 13 Extensions

Enables or disables support for disks with more than 1024 cylinders. Allows the computer to boot from “El Torito” non-emulation CD-ROM. This field is ignored if the Host Adapter BIOS is disabled. The options are:

• Enabled (default)

• Disabled

5.2 SCSI Disk Utilities

To enter the SCSI Disk Utilities, select the SCSI Disk Utilities option from the SCSISelect menu. When you select this option, SCSISelect scans the SCSI bus (to determine the devices installed) and displays a list of all SCSI IDs and the devices assigned to each ID.

When you select a specific ID and device, a small menu appears, displaying two options: Format Disk and Verify Disk Media.

5.2.1 Format Disk

CAUTION

A low-level format destroys all data on the drive. Back up your data before performing this operation. You cannot abort a low-level format once it is started.

Performs a low-level format on a hard disk drive. Most SCSI disk devices are preformatted at the factory and do not need to be formatted again. The Adaptec Format Disk utility is compatible with most SCSI disk drives.

Error Messages and Beep Codes

5.2.2 Verify Disk Media

Scans the media of a hard disk drive for defects. If the utility finds bad blocks on the media, it prompts you to reassign them; if you select Yes, those blocks are no longer used. Press <Esc> at any time to abort the utility.

DK440LX Motherboard Technical Product Specification

6 Error Messages and Beep Codes

6.1 BIOS Error Messages

Table 75. BIOS Error Messages

Error Message Explanation

Diskette drive A error or Diskette drive B error

Extended RAM Failed at offset:

nnnn

Failing Bits:

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

Incorrect Drive A type - run SETUP

Incorrect Drive B 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

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

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

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

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

nnnn

Drive A or B is present but fails the POST diskette tests. Check that the drive is defined with the proper diskette type in Setup and that the diskette drive is installed correctly.

Extended memory not working or not configured properly at offset

The number 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.

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

Type of floppy drive for drive B not correctly identified in Setup.

BIOS discovered a stuck key and displays the scan code nn for the stuck key.

Unlock the system to proceed.

Monitor type not correctly identified in Setup.

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

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

and 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 (System,

nnnn

continued ☛

DK440LX Motherboard Technical Product Specification

Table 75. BIOS Error Messages

Error Message Explanation

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

nnnn

= hexadecimal numbers

(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 was detected.

nnnn

of the 64 KB block at which the error

nnnn

of the 64 KB block at which the error

Error Messages and Beep Codes

6.2 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 76. 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 CPU registers 0Bh Enable CPU cache 0Ch Initialize caches to initial POST values 0Eh Initialize I/O component 0Fh Initialize the local bus IDE 10h Initialize power management 11h Load alternate registers with initial POST 12h Restore CPU 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

valuesnew

continued ☛

DK440LX Motherboard Technical Product Specification

Table 76. Port 80h Codes

Code Description of POST Operation Currently In Progress

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 CPU 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 40h Set Initial CPU speed new 42h Initialize interrupt vectors 44h Initialize BIOS interrupts 45h POST device initialization 46h Check ROM copyright notice 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 CPU 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 CPU cache

(continued)

nnnn

of low byte of memory bus

nnnn

of high byte of memory bus

valuesnew

100

continued

☛

Intel DK440LX User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Revision History

Contents

1 Motherboard Description

1.1 Overview

1.2 Manufacturing Subsystem Options

1.3 Motherboard Components

1.4 Custom Form Factor

1.5 I/O Shield

1.6 Processor

1.6.1 Processor Packaging

1.6.2 Second Level Cache

1.6.3 Processor Upgrades

1.7 Memory

1.7.1 Main Memory

1.7.2 SDRAM

1.7.3 ECC Memory

1.8 Chipset

1.8.1 Intel 82443LX PCI/A.G.P. Controller (PAC)

1.8.2 Intel 82371AB PCI ISA IDE Xcelerator (PIIX4)

1.8.3 Intel 82093AA I/O Advanced Programmable Interrupt Controller (IOAPIC)

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

1.8.5 Universal Serial Bus (USB)

1.8.6 IDE Support

1.8.7 Real-Time Clock, CMOS SRAM, and Battery

1.9 SuperI/O Controller

1.9.1 Serial Ports

1.9.2 Parallel Port

1.9.3 Floppy Controller

1.9.4 Keyboard and Mouse Interface

1.10 Audio Subsystem

1.10.1 Audio Subsystem Performance

1.10.2 Audio Drivers and Utilities

1.10.3 Audio Connectors

1.10.4 Hardware Wavetable Support

1.11 Hardware Monitor Subsystem

1.12.1 Intel 82557 LAN Controller

1.12.2 10 / 100 Mbit/sec Physical Layer Interface

1.12.3 Wake on LAN ASIC

1.12.4 LAN Subsystem Software

1.13 Wake on LAN Header

1.14 Wake on Modem

1.15 SCSI Subsystem

1.15.1 SCSI Drivers and Utilities

1.15.2 SCSI Interface

1.15.3 SCSI Bus

1.16 Motherboard Connectors

1.16.1 Power Supply Connector

1.16.2 Auxiliary Power Supply Connector

1.16.3 Front Panel Connectors

1.16.4 Back Panel Connectors

1.16.5 Add-in Board Expansion Connectors

1.17 Connector Part Numbers

1.18 Jumper Settings

1.18.1 Normal Mode

1.18.2 Configure Mode

1.18.3 Recovery Mode

1.19 Reliability

1.20 Environmental Specifications

1.21 Power Consumption

1.22 Power Supply Considerations

1.23 Thermal Considerations

1.24 Regulatory Compliance

1.24.1 Safety

1.24.2 Electromagnetic Compatibility (EMC)

1.24.3 Product Certification Markings

2 Motherboard Resources

2.1 Memory Map

2.2 DMA Channels

2.3 I/O Map

2.4 PCI Configuration Space Map

2.5 Interrupts

2.6 PCI Interrupt Routing Map

3 Overview of BIOS Features

3.1 BIOS Upgrades

3.2 BIOS Flash Memory Organization

3.3 Plug and Play: PCI Autoconfiguration