AL440LX Motherboard Technical Product Specification August 1997 Order Number 677028-001 The AL440LX 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 AL440LX Motherboard Specification Update. Revision History Revision Revision History Date -001 First Release of the AL440LX Motherboard Technical Product August 1997 Specification This product specification applies only to standard AL440LX motherboards with BIOS identifier 4A4LL0X0.86A.XXXX.PXX. Changes to this specification will be published in the AL440LX Motherboard Specification Update before being incorporated into a revision of this document. Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel's Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not intended for use in medical, life saving, or life sustaining applications. Intel retains the right to make changes to specifications and product descriptions at any time, without notice. The AL440LX 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. Copyright  Intel Corporation, 1997. Contents 1 Motherboard Description 1.1 Overview ......................................................................................................................7 1.2 Manufacturing Options .................................................................................................8 1.3 Motherboard Components............................................................................................9 1.4 Form Factor................................................................................................................10 1.5 I/O Shield ...................................................................................................................11 1.6 Processor...................................................................................................................13 1.6.1 Processor Packaging...................................................................................13 1.6.2 Second Level Cache....................................................................................13 1.6.3 Processor Upgrades ....................................................................................13 1.7 Memory ......................................................................................................................14 1.7.1 Main Memory ...............................................................................................14 1.7.2 SDRAM........................................................................................................14 1.7.3 ECC Memory ...............................................................................................15 1.8 Chipset.......................................................................................................................16 1.8.1 Intel 82443LX PCI/A.G.P. Controller (PAC) .................................................16 1.8.2 Intel 82371AB PCI ISA IDE Xcelerator (PIIX4) ............................................17 1.8.3 Accelerated Graphics Port (A.G.P.) .............................................................17 1.8.4 Universal Serial Bus (USB) ..........................................................................18 1.8.5 IDE Support .................................................................................................18 1.8.6 Real-Time Clock, CMOS SRAM, and Battery ..............................................18 1.9 Super I/O Controller ...................................................................................................19 1.9.1 Serial Ports ..................................................................................................19 1.9.2 Parallel Port .................................................................................................19 1.9.3 Floppy Controller..........................................................................................20 1.9.4 Keyboard and Mouse Interface....................................................................20 1.9.5 Infrared Support...........................................................................................20 1.10 Audio Subsystem .......................................................................................................21 1.10.1 OPL3-SA3 Audio System.............................................................................21 1.10.2 OPL4-ML Wavetable Synthesizer................................................................21 1.10.3 Audio Subsystem Resources.......................................................................22 1.10.4 Audio Drivers and Utilities............................................................................22 1.10.5 Audio Connectors ........................................................................................23 1.11 Management Extension Hardware .............................................................................24 1.11.1 Chassis Security Header..............................................................................24 1.12 Wake on LAN Header ................................................................................................25 1.13 Wake on Ring Header................................................................................................25 1.14 Motherboard Connectors............................................................................................26 1.14.1 Power Supply Connector .............................................................................32 1.14.2 Front Panel Connectors...............................................................................33 1.14.3 SCSI Hard Drive LED Header......................................................................35 1.14.4 Back Panel Connectors ...............................................................................36 1.14.5 Add-in Board Expansion Connectors...........................................................39 3 AL440LX Motherboard Technical Product Specification 1.15 Jumper Settings .........................................................................................................42 1.15.1 Normal Mode ...............................................................................................43 1.15.2 Configure Mode ...........................................................................................43 1.15.3 Recovery Mode............................................................................................43 1.16 Reliability....................................................................................................................44 1.17 Environmental Specifications .....................................................................................44 1.18 Power Consumption...................................................................................................45 1.18.1 Power Supply Considerations......................................................................45 1.19 Thermal Considerations .............................................................................................46 1.20 Regulatory Compliance..............................................................................................47 1.20.1 Safety...........................................................................................................47 1.20.2 EMC.............................................................................................................47 1.20.3 Product Certification Markings .....................................................................48 2 Motherboard Resources 2.1 Memory Map ..............................................................................................................49 2.2 DMA Channels ...........................................................................................................49 2.3 I/O Map ......................................................................................................................50 2.4 PCI Configuration Space Map....................................................................................52 2.5 Interrupts....................................................................................................................52 2.6 PCI Interrupt Routing Map..........................................................................................53 3 Overview of BIOS Features 3.1 Introduction ................................................................................................................55 3.1.1 BIOS Upgrades...........................................................................................55 3.1.2 BIOS Flash Memory Organization ...............................................................56 3.1.3 Plug and Play: PCI Autoconfiguration.........................................................56 3.1.4 PCI IDE Support ..........................................................................................57 3.1.5 ISA Plug and Play........................................................................................57 3.1.6 ISA Legacy Devices.....................................................................................57 3.1.7 Desktop Management Interface (DMI) .........................................................58 3.1.8 Advanced Power Management (APM).........................................................58 3.1.9 Language Support .......................................................................................59 3.1.10 Boot Options................................................................................................59 3.1.11 OEM Logo or Scan Area..............................................................................60 3.1.12 USB Support................................................................................................60 3.1.13 BIOS Setup Access .....................................................................................60 3.1.14 Recovering BIOS Data.................................................................................60 4 BIOS Setup Program 4.1 Maintenance Menu.....................................................................................................62 4.2 Main Menu .................................................................................................................62 4.2.1 Floppy Options Submenu ............................................................................63 4.2.2 IDE Device Configuration Submenus...........................................................64 4.3 Advanced Menu .........................................................................................................65 4.3.1 Resource Configuration Submenu...............................................................66 4.3.2 Peripheral Configuration Submenu..............................................................67 4 Contents 4.3.3 Keyboard Features Submenu......................................................................68 4.3.4 Video Configuration Submenu.....................................................................68 4.3.5 DMI Event Logging Submenu......................................................................68 4.4 Security Menu ............................................................................................................69 4.5 Power Menu...............................................................................................................69 4.6 Boot Menu..................................................................................................................70 4.6.1 Hard Drive Submenu ...................................................................................71 4.6.2 Removable Devices Submenu.....................................................................71 4.7 Exit Menu ...................................................................................................................71 5 Error Messages and Beep Codes 5.1 BIOS Error Messages ................................................................................................73 5.2 Port 80h POST Codes ...............................................................................................75 5.3 BIOS Beep Codes......................................................................................................80 6 Specifications and Customer Support 6.1 Online Support ...........................................................................................................81 6.2 Specifications.............................................................................................................81 Figures 1. Motherboard Components............................................................................................9 2. Motherboard Dimensions ...........................................................................................10 3. Back Panel I/O Shield Dimensions (ATX Chassis-Dependent) ..................................11 4. Back Panel I/O Shield Dimensions (ATX Chassis-Independent)................................12 5. Block Diagram of Management Extension ASIC ........................................................24 6. Motherboard Connectors............................................................................................26 7. Front Panel I/O Connectors........................................................................................33 8. Back Panel I/O Connectors........................................................................................36 9. Single-Jumper Configuration......................................................................................42 10. Thermally-Sensitive Components...............................................................................46 Tables 1. Audio Subsystem Resources .....................................................................................22 2. Chassis Security Header (J2B1) ................................................................................27 3. Wake on LAN Header (J1C1).....................................................................................27 4. ATAPI CD Audio Connector (J1F1)............................................................................27 5. ATAPI-Style Telephony Connector (J2F1) .................................................................27 6. ATAPI-Style Line In Connector (J2F2) .......................................................................27 7. Fan 1 Header (J8M1) .................................................................................................27 8. Fan 2 Header (J3F1)..................................................................................................28 9. Fan 3 Header (J5L1) (Active Heatsink Fan) ...............................................................28 10. SCSI Hard Drive LED Input Header (J8B1)................................................................28 11. Wake on Ring Header (J8A1) ....................................................................................28 12. Yamaha Wavetable Module Headers (J6B1 and J6C1).............................................28 13. Floppy Drive Connector (J8K1) ..................................................................................29 14. PCI IDE Connectors (J7H1, J8H1).............................................................................30 15. Accelerated Graphics Port (J4E1)..............................................................................31 16. Power Supply Connector (J7L1) ................................................................................32 17. Front Panel I/O Connectors........................................................................................34 5 AL440LX Motherboard Technical Product Specification 18. Power LED (J7L1)......................................................................................................34 19. PS/2 Keyboard/Mouse Connectors............................................................................37 20. USB Connectors ........................................................................................................37 21. Serial Port Connectors ...............................................................................................37 22. Audio Line Out Connector..........................................................................................37 23. Audio Line In Connector.............................................................................................37 24. Audio Mic In Connector..............................................................................................38 25. Parallel Port Connector ..............................................................................................38 26. MIDI / Game Port Connector......................................................................................38 27. PCI Bus Connectors...................................................................................................39 28. ISA Bus Connectors..................................................................................................40 29. Configuration Jumper Settings...................................................................................42 30. Environmental Specifications .....................................................................................44 31. Power Usage..............................................................................................................45 32. DC Voltage.................................................................................................................45 33. Thermal Considerations for Components...................................................................46 34. Memory Map ..............................................................................................................49 35. DMA Channels ...........................................................................................................49 36. I/O Map ......................................................................................................................50 37. PCI Configuration Space Map....................................................................................52 38. Interrupts....................................................................................................................52 39. PCI Interrupt Routing Map..........................................................................................53 40. Flash Memory Organization .......................................................................................56 41. Recommendations for Configuring an ATAPI Device.................................................57 42. Setup Menu Bar .........................................................................................................61 43. Setup Function Keys..................................................................................................61 44. Maintenance Menu.....................................................................................................62 45. Main Menu .................................................................................................................62 46. Floppy Options Submenu...........................................................................................63 47. IDE Device Configuration Submenus.........................................................................64 48. Advanced Menu .........................................................................................................65 49. Resource Configuration Submenu .............................................................................66 50. Peripheral Configuration Submenu ............................................................................67 51. Keyboard Features Submenu ....................................................................................68 52. Video Configuration Submenu ...................................................................................68 53. DMI Event Logging Submenu ....................................................................................68 54. Security Menu ............................................................................................................69 55. Power Menu...............................................................................................................69 56. Boot Menu..................................................................................................................70 57. Hard Drive Submenu..................................................................................................71 58. Removable Devices Submenu ...................................................................................71 59. Exit Menu ...................................................................................................................71 60. BIOS Error Messages ................................................................................................73 61. Port 80h Codes ..........................................................................................................75 62. Beep Codes ...............................................................................................................80 63. Compliance with Specifications..................................................................................81 6 1 Motherboard Description 1.1 Overview The AL440LX motherboard supports the following features: Form factor • ATX form factor of 12 x 7.75 inches Processor  • Single Pentium II processor • 66 MHz bus speed • Supports all Pentium II processor speeds, voltages, and bus frequencies • 512 KB second-level cache on the substrate in the Single Edge Contact (S.E.C.) cartridge • Slot 1 connector Main memory • Three 168-pin DIMM sockets • Supports up to 384 MB of synchronous DRAM (SDRAM) memory • ECC or non-ECC memory 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.) 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 I/O features • National PC97307 Super I/O controller  Integrates standard I/O functions: floppy-drive interface, one multimode parallel port, two † FIFO serial ports, keyboard and mouse controller, IrDA -compatible interface • Two Universal Serial Bus (USB) interfaces Five usable expansion slots: • One ISA slot • Three PCI slots • One shared PCI/ISA slot 7 AL440LX Motherboard Technical Product Specification Other features • Intel/Phoenix BIOS • Onboard A.G.P. connector • Plug and Play compatible • Single-jumper configuration • Advanced Power Management (APM) • Wake on Ring header Software drivers and utilities are available from Intel. 1.2 Manufacturing Options The following are manufacturing options: • Audio subsystem  Yamaha OPL3-SA codec audio component  Yamaha OPL4-ML wavetable synthesizer component  Yamaha reference-design wavetable module  Back panel audio connectors: Line In, Line Out, Mic In  MIDI game port  Line In connector  CD-ROM audio connector • Management extension hardware † • Wake on LAN header • Chassis security header • Telephony connector • SCSI hard disk LED header 8 Motherboard Description 1.3 Motherboard Components ABCDEFGI H J EE DD CC K BB L M N AA O Z P YX W VUT SRQ OM06052 Figure 1. Motherboard Components A Optional chassis security header Q Floppy drive connector B Optional Yamaha OPL4-ML component R IDE connectors C Optional Wake on LAN header S Front panel header D Optional Yamaha OPL3-SA3 component T Accelerated Graphics Port (A.G.P.) connector E Battery U Intel 82371AB (PIIX4) F Optional Line In connector V National PC97307 I/O controller G Optional CD-ROM audio connector W Configuration header H Optional telephony connector X Optional SCSI hard disk LED header I Back-panel I/O connectors Y Wake on Ring header J Slot 1 connector Z Speaker K Intel 82443LX (PAC) AA 2 Mbit TSOP flash L Optional management extension hardware BB Optional Yamaha wavetable module headers M Fan 3 header (active heatsink fan) CC Fan 2 header N DIMM sockets DD PCI connectors O Primary power connector EE ISA connectors P Fan 1 header 9 AL440LX Motherboard Technical Product Specification 1.4 Form Factor The motherboard is designed to fit into a standard ATX form-factor chassis. The outer dimensions are 12 x 7.75 inches. Figure 2 shows that the mechanical form factor, the I/O connector locations, and the mounting hole locations are in compliance with the ATX specification (see Section 6.2). 6.5 6.1 5.20 0.0 1.25 11.35 0.65 0.0 3.10 4.90 11.10 OM06053 Figure 2. Motherboard Dimensions 10 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 certification testing. Figure 3 shows the critical dimensions of the chassis-dependent I/O shield. Figure 4 shows the critical dimensions of the chassis-independent I/O shield. Both figures indicate the position of each cutout. Additional design considerations for I/O shields relative to chassis requirements are described in the ATX specification. See Section 6.2 for information about the ATX specification. NOTE � An I/O shield specifically designed for the Intel ATX chassis is available from Intel. 4.610 1.590 0.133 0.200 0.295 0.478 0.458 0.768 1.955 1.158 1.407 0.597 0.306 Dia (3) 0.666 0.671 0.652 0.395 0.553 0.120 0.990 1.911 2.184 3.327 4.735 4.899 5.391 5.883 6.533 0.193 2.326 2.055 Left-end View 2.023 Note: Material = 0.010 ±.0.001 Thick Stainless Steel, Half Hard 0.050 OM05669 Figure 3. Back Panel I/O Shield Dimensions (ATX Chassis-Dependent) 11 AL440LX Motherboard Technical Product Specification NOTE � A chassis-independent I/O shield designed to be compliant with the ATX chassis specification 2.01 is available from Intel. 0.039 Dia 0.945 0.279 0.00 0.464 0.464 0.472 0.685 0.306 Dia (3) 0.945 1.889 Note: Material = 0.010 –.0.001 Right-end View Thick Stainless Steel, Half Hard 1.767 0.122 OM05734 Figure 4. Back Panel I/O Shield Dimensions (ATX Chassis-Independent) 12 0.134 0.00 0.442 0.911 1.798 2.070 3.214 4.618 4.783 5.275 5.767 6.255 Motherboard Description 1.6 Processor The motherboard supports a single Pentium II processor. 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, 266, or 300 MHz and have a 512 KB second-level cache. The processor implements MMX technology and maintains full backward compatibility with the 8086, 80286, Intel386, Intel486, Pentium, and Pentium Pro processors. The processor’s numeric coprocessor significantly increases the speed of floating-point operations and complies with ANSI/IEEE standard 754-1985. 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 Slot 1, the processor is secured by a retention mechanism attached to the motherboard. The heatsink is stabilized by a heatsink support that is 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 cache includes burst pipelined synchronous static RAM (BSRAM) and tag RAM. There are four BSRAM components totaling 512 KB in size. All supported onboard memory can be cached. 1.6.3 Processor Upgrades The motherboard can be upgraded with Pentium II processors that run at higher speeds. When upgrading the processor, use the BIOS configuration mode to change the processor speed (see Section 1.15.2). 13 AL440LX Motherboard Technical Product Specification 1.7 Memory 1.7.1 Main Memory The motherboard has three dual inline memory module (DIMM) sockets. Minimum memory size is 8 MB; maximum memory size is 384 MB. The BIOS automatically detects memory type, size, and speed. The motherboard supports the following memory features: • 168-pin DIMMs with gold-plated contacts • 66 MHz SDRAM only • Non-ECC (64-bit) and ECC (72-bit) memory • 3.3 V memory only • Single- or double-sided DIMMs in the following sizes: DIMM Size Non-ECC Configuration ECC Configuration 8 MB 1 Mbit x 64 1 Mbit x 72 16 MB 2 Mbit x 64 2 Mbit x 72 32 MB 4 Mbit x 64 4 Mbit x 72 64 MB 8 Mbit x 64 8 Mbit x 72 128 MB 16 Mbit x 64 16 Mbit x 72 Memory can be installed in one, two, or three sockets. Memory size and speed can vary between sockets. 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. NOTE � To function properly, SDRAM DIMMs must meet the Intel 4-clock, 66 MHz, unbuffered SDRAM specification for either 64-bit or 72-bit SDRAM. See Section 6.2 for information about these specifications. 14 Motherboard Description 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. If any non-ECC memory is installed, the Setup option for ECC configuration does not appear and ECC operation is not available. The following table describes the effect of using Setup to put each memory type in each supported mode. Whenever ECC mode is selected in Setup, some performance loss occurs. Memory Error Detection Mode Established in Setup Program ECC Disabled ECC Enabled No error detection N/A Non-ECC DIMM No error detection Single-bit error correction, multiple-bit error ECC DIMM detection 15 AL440LX Motherboard Technical Product Specification 1.8 Chipset The Intel 440LX chipset is the third generation of desktop PCIset and is designed for the Pentium II processor. 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, Accelerated Graphics Port (A.G.P.), and main memory. The PAC comes in a 492-pin BGA package and features: • Processor interface control  Processor host bus speed up to 66 MHz  32-bit addressing  GTL+ compliant host bus • Integrated DRAM controller  Support for synchronous DRAM (SDRAM)  64/72-bit path-to-memory  Auto detection of memory type  Support for 4-, 16-, 64-Mbit DRAM devices  Symmetrical and asymmetrical DRAM addressing  Support for 3.3 V DRAMs • Accelerated Graphics Port Interface  Compliance with A.G.P. specification (see Section 6.2 for specification information)  Support for 3.3 V A.G.P. devices with data transfer rates up to 133 MHz  Synchronous coupling to the host-bus frequency • Fully-synchronous PCI bus interface  Compliance with PCI specification (see Section 6.2 for specification information)  PCI-to-DRAM access greater than 100 MB/sec  Support for five PCI bus masters in addition to the host and PCI-to-ISA I/O bridge  Delayed transactions  PCI parity checking and generation support • 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 • Support for system management mode (SMM) 16 Motherboard Description 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 comes in a 324-pin MBGA package that features: • Multifunction PCI-to-ISA bridge  Support for the PCI bus at 33 MHz  Compliance with PCI specification (see Section 6.2 for specification information)  Full ISA or extended I/O (EIO) bus support • USB controller  Two USB ports (see Section 6.2 for compliance level)  Support for legacy keyboard and mouse  Support for UHCI design guide revision 1.1 interface • Integrated dual-channel enhanced IDE interface  Support for up to four IDE devices  PIO Mode 4 transfers at up to 16 MB/sec  Support for Ultra DMA/33 synchronous DMA mode transfers up to 33 MB/sec  Bus master mode with an 8 x 32-bit buffer for bus master PCI IDE burst transfers • Enhanced DMA controller  Two 8237-based DMA controllers  Support for PCI DMA with three PC/PCI channels and distributed DMA protocols  Fast type-F DMA for reduced PCI bus usage • Interrupt controller based on 82C59  Support for 15 interrupts  Programmable for edge/level sensitivity • Power management logic  Sleep/resume logic  Support for wake-on-modem through Ring Indicator input • Real-Time Clock  256 byte battery-backed CMOS SRAM  Includes date alarm • 16-bit counters/timers based on 82C54 1.8.3 Accelerated Graphics Port (A.G.P.) The Accelerated Graphics Port (A.G.P.) is a high-performance interconnect for graphic-intensive applications, such as 3D applications. A.G.P. is independent of the PCI bus and is intended for exclusive use with graphical-display devices. A.G.P. provides these performance features: • Pipelined-memory read and write operations that hide memory access latency • Demultiplexing of address and data on the bus for near 100 percent bus efficiency • AC timing for 133 MHz data transfer rates, allowing data throughput of 500 MB/sec A.G.P. complies with the 66 MHz PCI specification. See Section 6.2 for information about the A.G.P. and PCI specifications. 17 AL440LX Motherboard Technical Product Specification 1.8.4 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 6.2 for information about the USB specification. USB features include: • Self-identifying peripherals that can be plugged in while the computer is running • Automatic mapping of function to driver and configuration • Supports isochronous and asynchronous transfer types over the same set of wires • Supports up to 127 physical devices • Guaranteed bandwidth and low latencies appropriate for telephony, audio, and other applications • Error-handling and fault-recovery mechanisms built into the protocol NOTE � Computer systems that have an unshielded cable attached to a USB port may not meet FCC Class B requirements, even if no device or a low-speed (sub-channel) USB device is attached to the cable. Use shielded cable that meets the requirements for high-speed (fully-rated) devices. 1.8.5 IDE Support The motherboard has two independent bus-mastering PCI IDE interfaces. These interfaces support PIO Mode 3, PIO Mode 4, ATAPI devices (e.g., CD-ROM), and Ultra DMA/33 synchronous- DMA mode transfers. The BIOS supports logical block addressing (LBA) and extended cylinder head sector (ECHS) translation modes. The BIOS automatically detects the IDE device transfer rate and translation mode. Programmed I/O operations usually require a substantial amount of processor bandwidth. However, in multitasking operating systems, the bandwidth freed by bus mastering IDE can be devoted to other tasks while disk transfers are occurring. 1.8.6 Real-Time Clock, CMOS SRAM, and Battery The real-time clock is compatible with DS1287 and MC146818 components. The clock provides a time-of-day clock and a multicentury calendar with alarm features and century rollover. The real- time 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 3.3 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 3.3 V applied. 18 Motherboard Description 1.9 Super I/O Controller The PC97307 Super I/O Controller from National Semiconductor is an ISA Plug and Play compatible (see Section 6.2), 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 †  PS/2 diagnostic-register support  High-performance digital data separator (DDS) † and PS/2 drive-mode support  PC-AT • Keyboard and mouse controller  Industry standard 8042A compatible  General-purpose microcontroller  8-bit internal data bus • Supports an IrDA and Consumer IR-compliant infrared interface 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 Two 9-pin D-Sub serial port connectors are located on the back panel and are compatible with 16450 and 16550A UARTs. 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) 19 AL440LX Motherboard Technical Product Specification 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 circuit that, like a self-healing fuse, reestablishes the 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 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). 1.9.5 Infrared Support On the front panel I/O connector, there are six pins that support Hewlett Packard HSDL-1000 compatible infrared (IR) transmitters and receivers. In the Setup program, Serial Port 2 can be directed to a connected IR device. The connection can be used to transfer files to or from portable devices like laptops, PDAs, and printers. The Infrared Data Association (IrDA) specification supports data transfers of 115 Kbaud at a distance of 1 meter. See Section 6.2 for information about the IrDA specification. 1.9.5.1 Consumer Infrared Support On the front panel I/O connector, there is one pin that supports consumer infrared devices (remote controls). This pin supports receive-only operations at data rates of up to 685.57 Kbaud. Consumer infrared devices can be used to control telephony and multimedia operations, such as volume or CD track changes. A software and hardware interface is needed for a computer to support the consumer infrared feature. 20 Motherboard Description 1.10 Audio Subsystem 1.10.1 OPL3-SA3 Audio System The optional onboard audio subsystem features the Yamaha OPL3-SA3 (YMF715) device. The features of the device include: • A 16-bit audio codec • OPL3 FM synthesis • An integrated 3D enhanced stereo controller including all required analog components • An interface for MPU-401 and a joystick • Stereo analog-to-digital and digital-to-analog converters • Analog mixing, anti-aliasing, and reconstruction filters • Supports 16-bit address decoding • Line, microphone, and monaural inputs • ADPCM, A-law, or μlaw digital audio compression and decompression • Full digital control of all mixer and volume control functions • Software switching between rear panel Mic In and Line In connectors • Plug and Play compatible † • Sound Blaster Pro and Microsoft Windows Sound System compatible 1.10.2 OPL4-ML Wavetable Synthesizer The optional onboard wavetable synthesizer features the single-chip OPL4-ML (YMF704). The OPL4-ML integrates the OPL3 audio system, general MIDI processor, and wavetable ROM into a single component. The features of the device include: • Complies with general MIDI system 1 • Interface compatible with MPU-401 UART mode • FM synthesis is compatible with the OPL3 audio system • Wavetable synthesis that generates up to 24 voices simultaneously • 100-pin SQFP package (YMF704-S) 21 AL440LX Motherboard Technical Product Specification 1.10.3 Audio Subsystem Resources The following table shows the IRQ, DMA channel, and base I/O address options for the audio subsystem. Options are listed in order of preference specified by Yamaha. These options are automatically chosen by the Plug and Play interface, so there are no default settings. Onboard audio can be enabled or disabled in the Setup program. Table 1. Audio Subsystem Resources IRQ DMA channel I/O Address Resource (Options) (Options) (Options) † Sound Blaster 10 1 220-22Fh (DMA playback, DMA shared with 7 0,1,3 240-24Fh Windows Sound System capture) 5,7, 10,11 16 bytes on 16-byte boundary in the range of 220-280h Windows Sound System 5 0 530-537h (DMA playback) 11 0,1,3 E80-E87h 5,7, 10,11 8 bytes on 8-byte boundary in the range of 530-F48h MPU-401 330-331h (IRQ shared with Sound Blaster) 300-301h 2 bytes on 2-byte boundary in the range of 300-334h MIDI / Game Port 201h 1 byte on 1-byte boundary in the range of 201-20Fh † AdLib 388-38Dh 6 bytes on 8-byte boundary in the range of 388-3F8h 1.10.4 Audio Drivers and Utilities Audio software and utilities are available from Intel’s World Wide Web site (see Section 6.1). † Audio driver support is provided for the Microsoft Windows 3.1, Microsoft Windows 95, † † † Microsoft Windows NT (versions 3.51 and 4.0), and IBM OS/2 Warp (versions 3.0 and 4.0) operating systems. 22 Motherboard Description 1.10.5 Audio Connectors The audio connectors are optional and include the following connectors: • Back panel connectors: Line In, Line Out, Mic In (see Section 1.14.4) • CD-ROM audio • Telephony • Line In • Hardware wavetable See Section 1.14 for the location and pinouts of the audio connectors. 1.10.5.1 CD-ROM Audio Connector An optional 1 x 4-pin ATAPI-style connector (J1F1) is available for connecting an internal CD- ROM drive to the audio mixer. The connector is designed for audio add-in cards and is compatible with most cables supplied with ATAPI CD-ROM drives. 1.10.5.2 Telephony Connector An optional 1 x 4-pin ATAPI-style connector (J2F1) is available for connecting the monaural audio signals of an internal telephony device to the audio subsystem. A monaural audio-in and audio-out signal interface is necessary for telephony applications such as speakerphones, fax/modem, and answering machines. 1.10.5.3 Line In Connector An optional 1 x 4-pin ATAPI-style Line In connector (J2F2) 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 necessary for applications such as TV tuners. 1.10.5.4 Hardware Wavetable Headers Two optional 2 x 3-pin headers (J6B1, J6C1) are available for a wavetable add-in module. An optional OPL4-ML reference design module that can be plugged into the motherboard may be licensed from Yamaha Corporation. Compatible wavetable module cards are available from several vendors. 23 AL440LX Motherboard Technical Product Specification 1.11 Management Extension Hardware The optional management extension hardware provides low-cost instrumentation capabilities on a single-chip ASIC. The features include: • Integrated temperature sensor • Fan speed sensors • Power supply voltage monitoring to detect levels above or below acceptable values ® • Remote reset capabilities from a remote peer or server through LANDesk Client Manager, Version 3.0 and service layers (when available) • Header for an external chassis-security feature See Section 6.2 for information about the management extension hardware specification. The following picture shows a block diagram of the management extension hardware. VOLTAGE Control 3(8) RESET +5 Sense Status 4(8) -5 +12V +12 -12 8 Bit Limit 1(8) +3.3 8 Ch Limit 2 (8) +2.5A MUX +2.5B A/D Limit 17(8) Temp Sensor 2 Pulse/Rev FAN Intvl 2 Pulse/Rev Timers (3) 2 Pulse/Rev Chassis Security POST Regs Switch (32 x 8) Port 80/84 Shadow Power Switch (Bypass) 2 SDA I C I/F Slave SCL BTI VID[0...3] Fans Encoders (4400 +/- 600 rpm) OM06057A Figure 5. Block Diagram of Management Extension ASIC 1.11.1 Chassis Security Header The management extension hardware supports an optional chassis security feature that detects if the chassis is opened while the computer is powered on. The security feature uses a mechanical switch on the chassis that is attached to an optional 1 x 2-pin header (J2B1). The mechanical switch is closed for normal computer operation. See Section 1.14 for the location and pinouts of the chassis security header. 24 Motherboard Description 1.12 Wake on LAN Header The optional Wake on LAN header (J1C1) is a 1 x 3-pin header for remote wakeup of the computer through a network. Wake on LAN requires a PCI add-in network interface card (NIC) with remote wakeup capabilities. The remote wakeup header on the NIC must be connected to the onboard Wake on LAN header. The NIC monitors network traffic at the MII interface and when it detects a † Magic Packet it asserts a wakeup signal that powers up the computer. See Section 1.14 for the location and pinouts of the Wake on LAN header. NOTE � For Wake on LAN, the 5-V standby line for the power supply must be capable of delivering +5 V ± 5 % at 720 mA. 1.13 Wake on Ring Header The Wake on Ring header (J8A1) is a 1 x 2-pin header that allows the computer to wake from sleep mode when a call is received on a telephony device, such as a modem, configured for operation on COM1. The first incoming call powers up the computer. A second call must be made to access the computer. See Section 1.14 for the location and pinouts of the Wake on Ring header. 25 AL440LX Motherboard Technical Product Specification 1.14 Motherboard Connectors The following figure shows the location of the motherboard connectors. J1F1 1 4 CD-ROM Audio J2F1 1 4 1 A.G.P. connector J4E1 Telephony Chassis Security J2F2 J2B1 1 4 Wake on 3 LAN Line In Audio J1C1 1 ISA Connectors(2) 1 Fan 2 J4A1, J4B2 J3F1 PCI Connectors(4) Fan 3 J4B1, J4C1 (Active 1 Heatsink J4D1, J4D2 Slot 1 Fan) J4J1 J5L1 DIMM Sockets(3) Bank 2 J6J1 J6B1 J6C1 Bank 1 J6J2 6 3 5 Bank 0 J7J1 4 1 2 1 J7L1 1 10 Yamaha Wavetable 1 11 Power 20 Wake on Ring 3 1 J8A1 2 Fan 1 Configuration Jumper 1 J8B2 1 3 SCSI Hard J8K1 234 Drive LED IDE(2) 20 40 2 J8M1 J8B1 2 135 3 Floppy 139 J7H1-Secondary J8H1-Primary J8H2 27 1 Front Panel I/O OM06057 Figure 6. Motherboard Connectors 26 Motherboard Description Table 2. Chassis Security Header (J2B1) Pin Signal Name 1 Ground 2 CHS_SEC Table 3. Wake on LAN Header (J1C1) Pin Signal Name 1 +5 VSB 2 Ground 3 WOL Table 4. ATAPI CD Audio Connector (J1F1) Pin Signal Name 1 CD_IN-Left 2 Ground 3 Ground 4 CD_IN-Right Table 5. ATAPI-Style Telephony Connector (J2F1) Pin Signal Name 1 Audio Out (monaural) 2 Ground 3 Ground 4 Audio In (monaural) Table 6. ATAPI-Style Line In Connector (J2F2) Pin Signal Name 1 Left Line In 2 Ground 3 Ground 4 Right Line In (monaural) Table 7. Fan 1 Header (J8M1) Pin Signal Name 1 Ground 2 FAN_CTRL (+12 V) 3 FAN_SEN* * If the optional management extension hardware is not available, pin 3 is ground. 27 AL440LX Motherboard Technical Product Specification Table 8. Fan 2 Header (J3F1) Pin Signal Name 1 Ground 2 FAN_CTRL (+12 V) 3 FAN_SEN* * If the optional management extension hardware is not available, pin 3 is ground. Table 9. Fan 3 Header (J5L1) (Active Heatsink Fan) Pin Signal Name 1 Ground 2 +12 V 3 ground Table 10. SCSI Hard Drive LED Input Header (J8B1) Pin Signal Name 1 DRV_ACT# 2 No connect Table 11. Wake on Ring Header (J8A1) Pin Signal Name 1 Ground 2 RINGA Table 12. Yamaha Wavetable Module Headers (J6B1 and J6C1) Connector (J6B1) Connector (J6C1) Pin Signal Name Pin Signal Name 1 SYNCS# 1 RSTSLOT 2 SIN 2 Vcc 3 Vcc 3 AUD33MHZ 4 Ground 4 MIDI Out 5 BCK 5 Ground 6 LACK 6 Key Note: There are two 2 x 3 headers in a standard position that connect to the Yamaha wavetable module. 28 Motherboard Description Table 13. Floppy Drive Connector (J8K1) 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) 29 AL440LX Motherboard Technical Product Specification Table 14. PCI IDE Connectors (J7H1, J8H1) 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. 30 Motherboard Description Table 15. Accelerated Graphics Port (J4E1) 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 AD22 B35 AD21 A3 Reserved B3 Vcc A36 AD20 B36 AD19 A4 No Connect B4 No Connect A37 Ground B37 Ground A5 Ground B5 Ground A38 AD18 B38 AD17 A6 INTA# B6 INTB# A39 AD16 B39 C/BE2# A7 RST# B7 CLK A40 Vcc3.3 B40 Vcc3.3 A8 GNT1# B8 REQ# A41 FRAME# B41 IRDY# A9 Vcc3.3 B9 Vcc3.3 A42 Reserved B42 Reserved A10 ST1 B10 ST0 A43 Ground B43 Ground A11 Reserved B11 ST2 A44 Reserved B44 Reserved A12 PIPE# B12 RBF# A45 Vcc3.3 B45 Vcc3.3 A13 Ground B13 Ground A46 TRDY# B46 DEVSEL# A14 No Connect B14 No Connect A47 STOP# B47 Vcc3.3 A15 SBA1 B15 SBA0 A48 No Connect B48 PERR# A16 Vcc3.3 B16 Vcc3.3 A49 Ground B49 Ground A17 SBA3 B17 SBA2 A50 PAR B50 SERR# A18 Reserved B18 SB_STB A51 AD15 B51 C/BE1# A19 Ground B19 Ground A52 Vcc3.3 B52 Vcc3.3 A20 SBA5 B20 SBA4 A53 AD13 B53 AD14 A21 SBA7 B21 SBA6 A54 AD11 B54 AD12 A22 Key B22 Key A55 Ground B55 Ground A23 Key B23 Key A56 AD9 B56 AD10 A24 Key B24 Key A57 C/BE0# B57 AD8 A25 Key B25 Key A58 Vcc3.3 B58 Vcc3.3 A26 AD30 B26 AD31 A59 Reserved B59 AD_STB0 A27 AD28 B27 AD29 A60 AD6 B60 AD7 A28 Vcc3.3 B28 Vcc3.3 A61 Ground B61 Ground A29 AD26 B29 AD27 A62 AD4 B62 AD5 A30 AD24 B30 AD25 A63 AD2 B63 AD3 A31 Ground B31 Ground A64 Vcc3.3 B64 Vcc3.3 A32 Reserved B32 AD_STB1 A65 AD0 B65 AD1 A33 C/BE3# B33 AD23 A66 SMB0 B66 SMB1 31 AL440LX Motherboard Technical Product Specification 1.14.1 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 6.2 for information about the ATX specification. To enable soft-off control in software, advanced power management must be enabled in the Setup program and in the operating system. When the system BIOS receives the correct APM command from the operating system, the BIOS turns off power to the computer. With soft-off enabled, if power to the computer is interrupted by a power outage or a disconnected power cord, when power resumes, the computer returns to the power state it was in before power was interrupted (on or off). Table 16. Power Supply Connector (J7L1) 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 PS-ON# (power supply remote on/off control) 15 Ground 16 Ground 17 Ground 18 -5 V 19 +5 V 20 +5 V 32 Motherboard Description 1.14.2 Front Panel Connectors The front panel connector includes headers for these I/O connections: • Speaker • Reset switch • Power LED • Hard drive activity LED • Infrared (IrDA) port • Sleep switch • Power switch J8H2 27 1 Speaker Reset Pwr LED HD LED Infrared Sleep Pwr On OM06054 Figure 7. Front Panel I/O Connectors 33 AL440LX Motherboard Technical Product Specification Table 17. Front Panel I/O Connectors Connector Pin Signal Name Connector Pin Signal Name A. Speaker 27 SPKR_HDR none 12 No connect 26 PIEZO_IN E. IrDA 11 CONIR (Consumer IR) 25 Key 10 IrTX 24 Ground 9 Ground B. Reset 23 SW_RST 8 IrRX 22 Ground 7 Key none 21 No connect/Key 6 +5 V C. Sleep/Power LED 20 PWR_LED none 5 No connect 19 Key F. Sleep/Resume 4 SLEEP_PU (pullup) 18 Ground 3 SLEEP none 17 No connect/Key G. Power On 2 Ground D. Hard Drive LED 16 HD_PWR 1 SW_ON# 15 HD Active# 14 Key 13 HD_PWR +5 V 1.14.2.1 Speaker A speaker can be installed on the motherboard as a manufacturing option. The 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. 1.14.2.2 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. 1.14.2.3 Power LED/Sleep/Message Waiting This header can be connected to an LED that will light when the computer is powered on. Table 18 shows the possible states for this LED. Table 18. Power LED (J7L1) LED State Description Off Power off Green Power on Yellow Sleep Blink Message waiting 34 Motherboard Description 1.14.2.4 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 hard drive. 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 SCSI hard drive LED header. See Section 1.14.3 for information about the SCSI hard drive LED header. 1.14.2.5 Infrared Connector Serial Port 2 can be configured to support an IrDA module connected to this 6-pin header. After the IrDA interface is configured, files can be transferred to or from portable devices such as laptops, PDAs and printers using application software. 1.14.2.6 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 system 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. To reactivate or resume the system, the sleep/resume switch must be pressed again, or the keyboard or mouse must be used. 1.14.2.7 Power On Connector This header can be connected to a front panel power switch. 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. (The time requirement is due to internal debounce circuitry on the motherboard.) At least two seconds must pass before the power supply will recognize another on/off signal. 1.14.3 SCSI Hard Drive LED Header The SCSI hard drive LED header is a 1 x 2-pin header (J8B1) that allows add-in SCSI controller applications to use the same LED as the onboard front-panel LED. This header can be connected to the LED output of the add-in controller card. The LED will indicate when data is being read or written using the add-in controller. See Section 1.14.2.4 for information about the onboard IDE hard drive LED header. See page 28 for the SCSI hard drive LED header pinouts. 35 AL440LX Motherboard Technical Product Specification 1.14.4 Back Panel Connectors Figure 8 shows the location of the back panel I/O connectors, which include: • PS/2-style keyboard and mouse connectors • Two USB connectors • External audio jacks: Line Out, Line In, and Mic In (optional) • Two serial ports • One parallel port • MIDI/game port (optional) MIDI/Game Port Keyboard (optional) Parallel Port USB 1 Mouse Serial Serial Line Out Mic In Port A Port B (optional) (optional) USB 0 Line In (optional) OM06056 Figure 8. Back Panel I/O Connectors 36 Motherboard Description Table 19. 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 20. USB Connectors Pin Signal Name 1 Power 2 USBP0# [USBP1#] 3 USBP0 [USBP1] 4 Ground Table 21. Serial Port Connectors Pin Signal Name 1 DCD 2 Serial In # 3 Serial Out # 4 DTR# 5 Ground 6 DSR 7 RTS 8 CTS 9RI Table 22. Audio Line Out Connector Pin Signal Name Sleeve Ground Tip Audio Left Out Ring Audio Right Out Table 23. Audio Line In Connector Pin Signal Name Sleeve Ground Tip Audio Left In Ring Audio Right In 37 AL440LX Motherboard Technical Product Specification Table 24. Audio Mic In Connector Pin Signal Name Sleeve Ground Tip Mono In Ring Electret Bias Voltage Table 25. 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 Table 26. MIDI / Game Port Connector Pin Signal Name Pin Signal Name 1 +5 V (fused) 9 +5 V (fused) 2 GP4 (JSBUTO) 10 GP6 (JSBUT2) 3 GP0 (JSX1R) 11 GP2 (JSX2R) 4 Ground 12 MIDI-OUTR 5 Ground 13 GP3 (JSY2R) 6 GP1 (JSY1R) 14 GP7 (JSBUT3) 7 GP5 (JSBUT1) 15 MIDI-INR 8 +5 V (fused) 38 Motherboard Description 1.14.5 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 6.2 for information about compliance with the PCI specification). Table 27. PCI Bus Connectors Pin Signal Name Pin Signal Name Pin Signal Name Pin Signal Name A1 Ground (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 no connect (PRSNT1#)* A40 +5 V (SDONE)* B40 PERR# A10 +5 V (I/O) B10 Reserved A41 +5 V (SBO#)* B41 +3.3 V A11 Reserved B11 no connect (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. 39 AL440LX Motherboard Technical Product Specification Table 28. 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 � 40 Motherboard Description Table 28. ISA Bus Connectors (continued) 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. 41 AL440LX Motherboard Technical Product Specification 1.15 Jumper Settings The configuration header (J8B2) requires a single jumper to set the configuration mode for the Setup program. This allows all motherboard configuration to be done in Setup. The following figure shows the location of the configuration header on the motherboard. 1 3 Configuration Jumper J8B2 OM06055 Figure 9. Single-Jumper Configuration Table 29. Configuration Jumper Settings Function Jumper J8B2 Configuration Normal 1-2 The BIOS uses current configuration information and passwords for booting. Configure 2-3 After the POST runs, Setup runs automatically. The maintenance menu is displayed. Recovery none The BIOS attempts to recover the BIOS configuration. 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. 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 1.15.2 for information about configure mode. 42 Motherboard Description 1.15.1 Normal Mode This mode is for normal computer booting and operations. Connect pins 1 and 2 with a jumper on the configuration header (J8B2) 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 an administrative or user password. In normal mode, the BIOS attempts an automatic recovery if the configuration information in flash memory is corrupted. 1.15.2 Configure Mode This mode is for configuring the processor speed and clearing passwords. Connect pins 2 and 3 with a jumper on the configuration header (J8B2) 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 available. Configure mode uses the default BIOS settings for booting, not the current user or administrative 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 administrative 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 1.15.1), and boot the computer. In configure mode, the BIOS attempts an automatic recovery if the configuration information flash memory is corrupted. 1.15.3 Recovery Mode This mode is for upgrading the BIOS or recovering BIOS data. Remove the jumper (no pins connected) from the configuration header (J8B2) 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. Beep codes indicate the recovery status: one beep indicates the start of the recovery, two beeps indicate a successful recovery, and multiple beeps indicate a failed recovery. 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 changes to take effect after a successful recovery, power down the computer, set the jumper to normal mode (see Section 1.15.1), and boot the computer. 43 AL440LX Motherboard Technical Product Specification 1.16 Reliability The mean time between failures (MTBF) prediction is calculated using component and subassembly random failure rates. The calculation is based on the Bellcore Reliability Prediction Procedure, TR-NWT-000332, Issue 4, September 1991. The MTBF prediction is for: • 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 176,587 hours. 1.17 Environmental Specifications Table 30. Environmental Specifications Parameter Specification Temperature Nonoperating -40 °C to +70 °C Operating 0 C to +55 C ° ° Shock Unpackaged 50 G trapezoidal waveform Velocity change of 170 inches/sec Packaged Half sine 2 millisecond Free Fall (inches) Velocity Change (inches/sec) Product Weight <20 lbs 36 167 21-40 lbs 30 152 41-80 lbs 24 136 81-100 lbs 18 118 Vibration Unpackaged 5 Hz to 20 Hz : 0.01g² Hz sloping up to 0.02 g² Hz 20 Hz to 500 Hz : 0.02g² Hz (flat) Packaged 10 Hz to 40 Hz : 0.015g² Hz (flat) 40 Hz to 500 Hz : 0.015g² Hz sloping down to 0.00015 g² Hz 44 Motherboard Description 1.18 Power Consumption Table 31 lists the power specifications for a computer that contains a motherboard with a 266 MHz Pentium II processor, 32 MB RAM, 256 KB cache, 3.5-inch floppy drive, 1.6 GB IDE hard drive, 4X IDE CD-ROM, and PCI 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 200W supply, nominal input voltage and frequency, with true RMS wattmeter at the line input. Table 31. Power Usage Mode AC (watts) Out of 110 VAC Wall Outlet DOS prompt, APM disabled 58.7 W Windows 95 desktop, APM disabled 60.0 W Windows 95 desktop, APM enabled, in SMM 28.0 W 1.18.1 Power Supply Considerations For typical configurations, the motherboard is designed to operate with at least a 200 W power supply (see Section 6.2 for the specification). A higher-wattage power supply should be used for heavily-loaded configurations. The power supply must meet the following requirements: • Rise time for power supply: 2 ms to 20 ms • Minimum delay for reset to Power Good: 100 ms • Minimum Powerdown warning: 1 ms • 3.3 V output must reach its minimum regulation level within ± 20 ms of the +5 V output reaching its minimum regulation level The following table lists the power supply’s tolerances for DC voltages: Table 32. DC Voltage DC Voltage Acceptable Tolerance +3.3 V ± 5% +5 V ± 5% +5 VSB (standby) ± 5% -5 V 5% ± +12 V 5% ± -12 V ± 5% 45 AL440LX Motherboard Technical Product Specification 1.19 Thermal Considerations The following table 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 o o An ambient temperature that exceeds the board’s maximum operating temperature by 5 C to 10 C might cause components to exceed their maximum case temperature. For information about the maximum operating temperature, see the environmental specifications in Section 1.17. Table 33. Thermal Considerations for Components Component Maximum Case Temperature Motherboard Location o PentiumII processor 233 MHz 75 C (thermal plate) J4J1 (Slot 1 connector) o 266 MHz 75 C (thermal plate) o 300 MHz 70 C (thermal plate) o Intel 82443LX (PAC) 85 C (case) U5H1 o Intel 82371AB (PIIX4) 85 C (case) U7D1 The following figure shows motherboard components that may be sensitive to thermal changes. Intel 82443LX (U5H1) Intel 82371AB (U7D1) OM06247 Figure 10. Thermally-Sensitive Components 46 Motherboard Description 1.20 Regulatory Compliance The board’s printed circuit assembly complies with the following safety and Electromagnetic Compatibility (EMC) regulations when correctly installed in a compatible host system. 1.20.1 Safety This printed circuit assembly complies with the following safety and EMC 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. 1.20.1.1 UL 1950 - CSA 950-95, 3rd edition, Dated 7-28-95 The Standard for Safety of Information Technology Equipment including Electrical Business Equipment (USA & Canada). 1.20.1.2 CSA C22.2 No. 950-95, 3rd Edition The Standard for Safety of Information Technology Equipment including Electrical Business Equipment (Canada). 1.20.1.3 UL Classified to IEC 950 See section 1.20.1.4. 1.20.1.4 IEC 950, 2nd edition The Standard for Safety of Information Technology Equipment including Electrical Business Equipment (International). 1.20.2 EMC This printed circuit assembly complies with the following EMC regulations when correctly installed in a compatible host system. 1.20.2.1 EN 55 022, Class B Limits and methods of measurement of Radio Interference Characteristics of Information Technology Equipment (Europe). 1.20.2.2 EN 50 082-1 Generic Immunity Standard; Currently compliance is determined via testing to IEC 801-2, -3, and -4 (Europe). 47 AL440LX Motherboard Technical Product Specification 1.20.3 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 the 94V-1 or 94V-0 standard. • Canadian Compliance: Consists of small c followed by a stylized backward UR on component side of motherboard. 48 2 Motherboard Resources NOTE � For more detailed information about the resources used for onboard audio, see the Audio Subsystem section in Chapter 1. 2.1 Memory Map Table 34. Memory Map Address Range (decimal) Address Range (hex) Size Description 1024 K - 393216 K 100000 - 18000000 383 MB Extended memory 1008 K - 1024 K FC000 - FFFFF 16 KB Boot block 1000 K - 1008 K FA000 - FBFFF 8 KB ESCD (Plug and Play configuration and DMI) 996 K - 1000 K F9000 - F9FFF 4 KB Reserved for BIOS 992 K - 996 K F8000 - F8FFF 4 KB OEM Logo or Scan User Flash 928 K - 992 K E8000 - F7FFF 64 KB POST BIOS 896 K - 928 K E0000 - E7FFF 32 KB POST BIOS (Available as UMB) 800 K - 896 K C8000 - DFFFF 96 KB Available high DOS memory (open to ISA 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 35. 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 49 AL440LX Motherboard Technical Product Specification 2.3 I/O Map Table 36. 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 0201 1 byte Audio / game port 0220 - 022F 16 bytes Audio (Sound Blaster compatible) 0228 - 022F 8 bytes LPT3 0240 - 024F 16 bytes Audio (Sound Blaster compatible) 0278 - 027F 8 bytes LPT2 0290 - 0297 8 bytes Management extension hardware 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 � 50 Motherboard Resources Table 36. 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) 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 0F86 - 0F87 2 bytes Yamaha OPL3-SA configuration FF00 - FF07 8 bytes IDE bus master register FFA0 - FFA7 8 bytes Primary bus master IDE registers FFA8 - FFAF 8 bytes Secondary bus master IDE registers * DWORD access only ** Byte access only NOTE � See Section 1.10.3 for the I/O addresses that can be used by the audio components on the motherboard. This table does not list I/O addresses that may be used by add-in cards in the system. 51 AL440LX Motherboard Technical Product Specification 2.4 PCI Configuration Space Map Table 37. PCI Configuration Space Map Bus Device Function Number (hex) Number (hex) Number (hex) Description 00 00 00 Intel 82440LX (PAC) 00 01 00 Intel 82440LX (PAC) A.G.P. bus 00 07 00 Intel 82371AB (PIIX4 ) PCI/ISA bridge 00 07 01 Intel 82371AB (PIIX4 ) IDE bus master 00 07 02 Intel 82371AB (PIIX4 ) USB 00 07 03 Intel 82371AB (PIIX4 ) power management 00 0D 00 PCI expansion slot 1 (J4D2) 00 0E 00 PCI expansion slot 2 (J4D1) 00 0F 00 PCI expansion slot 3 (J4C1) 00 10 00 PCI expansion slot 4 (J4B1) 2.5 Interrupts Table 38. 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 User available 11 Windows Sound System* / user available 12 Onboard mouse port (if present, else user available) 13 Reserved, math coprocessor 14 Primary IDE (if present, else user available) 15 Secondary IDE (if present, else user available) * Default, but can be changed to another IRQ 52 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 39 lists the PIRQ signals and shows how the signals are connected to the onboard PCI interrupt sources. Table 39. PCI Interrupt Routing Map PIIX4 First PCI Second PCI Third PCI Fourth PCI PIRQ Expansion Expansion Expansion Expansion A.G.P. Power Signal Slot: J4D2 Slot: J4D1 Slot: J4C1 Slot: J4B1 Slot: J4E1 USB Management PIRQA INTA INTD INTC INTB INTA PIRQB INTB INTA INTD INTC INTA PIRQC INTC INTB INTA INTD INTB INTD INTC INTB INTA INTA PIRQD For example, assume an add-in card has one interrupt (group INTA) into the fourth PCI slot. In this slot, an interrupt source from group INTA connects to the PIRQD signal, which is already connected to the onboard video and USB PCI sources. The add-in card shares an interrupt with these onboard interrupt sources. Now, however, plug an add-in card that has one interrupt (group INTA) into the first PCI slot. Plug a second add-in card that has two interrupts (groups INTA and INTB) into the second PCI slot. INTA in the first slot is connected to signal PIRQA. INTA in the second slot is connected to signal PIRQB, and INTB is connected to signal PIRQC. With no other cards added, the three interrupt sources on the first two cards each have a PIRQ signal to themselves. Typically, they will not share an interrupt. 53 AL440LX Motherboard Technical Product Specification NOTE � The PIIX4 can connect each PIRQ line internally to one of the IRQ signals (3,4,5,7,9,11,14,15). Typically, a device that does not share a PIRQ line will have a unique interrupt. However, in certain interrupt-constrained situations, it is possible for two or more of the PIRQ lines to be connected to the same IRQ signal. 54 3 Overview of BIOS Features 3.1 Introduction 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 auto- configuration utility, and Windows 95-ready Plug and Play. See Section 6.2 for the supported versions of these specifications. This motherboard supports system BIOS shadowing, allowing the BIOS to execute from 64-bit onboard write-protected DRAM. The BIOS displays a message during POST identifying the type of BIOS and a the revision code. The initial production BIOS is identified as 4A4LL0X0.86A.XXXX.PXX. 3.1.1 BIOS Upgrades A new version of the BIOS can be upgraded from a diskette using the iFLASH.EXE 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 iFLASH.EXE utility are available from Intel through the Intel World Wide Web site. See Section 6.1 for information about this site. NOTE � Please review the instructions distributed with the upgrade utility before attempting a BIOS upgrade. 55 AL440LX Motherboard Technical Product Specification 3.1.2 BIOS Flash Memory Organization The Intel PA28FB200BX 2-Mbit flash component is organized as 256 KB x 8 bits and is divided into areas as described in Table 40. The table shows the addresses in the ROM image in normal mode (the addresses change in BIOS Recovery Mode). Table 40. 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 FFFC0000 - FFFF7FFF 224 KB Main BIOS Block 3.1.3 Plug and Play: PCI Autoconfiguration The BIOS automatically configures PCI devices and Plug and Play devices. PCI devices may be onboard or add-in cards. Plug and Play devices are ISA add-in cards built to meet the Plug and Play specification. Autoconfiguration lets a user insert or remove PCI or Plug and Play cards without having to configure the system. When a user turns on the system after adding a PCI or Plug and Play card, the BIOS automatically configures interrupts, the I/O space, and other system resources. Any interrupts set to Available in Setup are considered to be available for use by the add-in card. PCI interrupts are distributed to available ISA interrupts that have not been assigned to an ISA card or to system resources. The assignment of PCI interrupts to ISA IRQs is nondeterministic. PCI devices can share an interrupt, but an ISA device cannot share an interrupt allocated to PCI or to another ISA device. Autoconfiguration information is stored in the extended system configuration data (ESCD) format. For information about the versions of PCI and Plug and Play supported by this BIOS, see Section 6.2. Copies of the specifications can be obtained from the Intel World Wide Web site (see Section 6.1). 56 Overview of BIOS Features 3.1.4 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 hard drives up to PIO Mode 4 and recognizes any ATAPI devices, including CD-ROM drives and tape drives (see Section 6.2 for the supported version of ATAPI). The BIOS determines the capabilities of each drive and configures them so as to optimize capacity and performance. To take advantage of the high-capacity storage devices, hard drives are automatically configured for logical block addressing (LBA) and to PIO Mode 3 or 4, depending on the capability of the drive. To override the autoconfiguration options, use the specific IDE device options in Setup. The ATAPI specification recommends that ATAPI devices be configured as shown in Table 41. Table 41. Recommendations for Configuring an ATAPI Device Primary Cable Secondary Cable Drive 0 Drive 1 Drive 0 Drive 1 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 3.1.5 ISA Plug and Play If Plug and Play operating system (see Section 4.3) is selected in Setup, the BIOS autoconfigures only ISA Plug and Play cards that are required for booting (IPL devices). If Plug and Play operating system is not selected in Setup, the BIOS autoconfigures all Plug and Play ISA cards. 3.1.6 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 6.1). 57 AL440LX Motherboard Technical Product Specification 3.1.7 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 Client Manager to use DMI. The BIOS stores and reports the following DMI information: • BIOS data, such as the BIOS revision level • Fixed-system data, such as peripherals, serial numbers, and asset tags • Resource data, such as memory size, cache size, and processor speed • Dynamic data, such as event detection and error logging OEMs can use a utility that programs flash memory so the BIOS can report on system and chassis information. This utility is available through Intel sales offices. See Section 6.1 for information about contacting a local Intel sales office. See Section 6.2 for information about the latest DMI specification. DMI does not work directly under non-Plug and Play operating systems (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. 3.1.8 Advanced Power Management (APM) The BIOS supports APM and standby mode. See Section 6.2 for the version of the APM specification that is supported. The energy saving standby mode can be initiated in the following ways: • Time-out period specified in Setup • Suspend/resume switch connected to the front panel sleep connector • From the operating system, such as the Suspend menu item in Windows 95 In standby mode, the motherboard reduces power consumption by using SMM capabilities, † spinning down hard drives, and reducing power to or turning off VESA DPMS-compliant 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. 58 Overview of BIOS Features 3.1.9 Language Support The Setup program and help messages can be supported in 32 languages. 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 3.1.1 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. 3.1.10 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 6.2 for information about the El Torito specification. Under the Boot menu in the Setup program, CD-ROM is listed as a boot device. Boot devices are defined in priority order. If the CD-ROM is selected as the boot device, it must be the first device. The network can be selected as a boot device. This selection allows booting from a network add-in card with a remote boot ROM installed. 59 AL440LX Motherboard Technical Product Specification 3.1.11 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 6.1 for information on contacting Intel customer support. 3.1.12 USB Support The USB connectors allow any of several USB devices to be attached to the computer. Typically, the device driver for USB devices is managed by the operating system. However, because keyboard and mouse support may be needed in the Setup program before the operating system boots, the BIOS supports USB keyboards and mice. 3.1.13 BIOS Setup Access Access to the Setup program can be restricted using passwords. User and supervisor passwords can be set using the Security menu in Setup. The default is no passwords enabled. See Section 4.4 for information about setting user and supervisor passwords. 3.1.14 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 1.15.3). To create a BIOS recovery diskette, a bootable diskette must be created and the recovery files copied to it. The recovery files are available from Intel, contact Intel customer support for further information. See Section 6.1 for information on contacting Intel customer support. 60 4 BIOS Setup Program The Setup program is for viewing and changing the BIOS settings for a computer. Setup is accessed by pressing the key after the Power-On Self Test (POST) memory test begins and before the operating system boot begins. Table 42 shows the menus available from the menu bar at the top of the Setup screen. Table 42. Setup Menu Bar Setup Menu Screen Description Maintenance Specifies the processor speed and clears the Setup passwords. This is only available in configure mode. Refer to Section 1.15.2 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 43 shows the function keys available for menu screens. Table 43. Setup Function Keys Setup Key Description or Brings up a help screen for the current item. Exits the menu. <←> or <→> Selects a different menu screen. <↑> or <↓> Moves cursor up or down. or Moves cursor to top or bottom of the window. or Moves cursor to top or bottom of the window. or <-> Selects the previous value for a field. or <+> or Selects the next value for a field. Load the default configuration values for the current menu. Save the current values and exit Setup. Executes command or selects the submenu. 61 AL440LX Motherboard Technical Product Specification 4.1 Maintenance Menu This menu is for setting the processor speed and clearing the Setup passwords. Setup only displays this menu in configure mode. See Section 1.15.2 for information about setting configure mode. Table 44. Maintenance Menu Feature Options Description Processor Speed • 200 Specifies the processor speed in megahertz. • 233 • 266 • 300 Clear All Passwords No options Clears the user and supervisor passwords. 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 45. Main Menu Feature Options Description Processor 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 default language used by the BIOS. System Time Hour, minute, Specifies the current time. and second System Date Month, day, and Specifies the current date. year Floppy Options, No option When selected, displays the Floppy Options submenu. submenu Primary IDE Master, No options Reports type of connected IDE device. When selected, displays submenu the Primary IDE Master submenu. Primary IDE Slave, No options Reports type of connected IDE device. When selected, displays submenu the Primary IDE Slave submenu. Secondary IDE No options Reports type of connected IDE device. When selected, displays Master, submenu the Secondary IDE Master submenu. Secondary IDE No options Reports type of connected IDE device. When selected, displays Slave, submenu the Secondary IDE Slave submenu. 62 BIOS Setup Program 4.2.1 Floppy Options Submenu This submenu is for configuring floppy drives. Table 46. Floppy Options Submenu Feature Options Description Diskette A: • Disabled Specifies the capacity and physical size • 360 KB, 5¼″ of diskette drive A. • 1.2 MB, 5¼″ • 720 KB, 3½″ • 1.44/1.25 MB, 3½″ (default) • 2.88 MB, 3½″ Diskette B: • Disabled (default) Specifies the capacity and physical size • 360 KB, 5¼″ of diskette drive B. • 1.2 MB, 5¼″ • 720 KB, 3½″ • 1.44/1.25 MB, 3½″ • 2.88 MB, 3½″ Floppy Write Protect • Disabled (default) Disables or enables write protect for the • Enabled diskette drive(s). 63 AL440LX 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 47. IDE Device Configuration Submenus Feature Options Description Type Specifies the IDE configuration mode for IDE • None • ATAPI Removable devices. • CD-ROM User allows the cylinders, heads, and sectors • User fields to be changed. • Auto (default) Auto automatically fills in the values for the cylinders, heads, and sectors fields. Cylinders 1 to XXXX Specifies number of disk cylinders. 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. Value calculated from number of cylinders, heads, and sectors. Multi-Sector Transfers Specifies number of sectors per block for • Disabled transfers from the hard drive to memory. • 2 Sectors • 4 Sectors Check the hard drive’s specifications for optimum 8 Sectors • setting. • 16 Sectors (default) LBA Mode Control Disabled Enables or disables logical block addressing (LBA) • in place of the Cylinders, Heads, and Sectors • Enabled (default) fields. CAUTION Changing the LBA Mode Control after a hard drive has been formatted can corrupt data on the drive. Transfer Mode Specifies method for transferring data between • Standard the hard drive and system memory. • Fast PIO 1 • Fast PIO 2 Fast PIO 3 • • Fast PIO 4 (default) Ultra DMA Disabled (default) Specifies the ultra DMA mode for the hard drive. • Mode 0 • • Mode 1 • Mode 2 64 BIOS Setup Program 4.3 Advanced Menu This menu is for setting advanced features that are available through the chipset. Table 48. Advanced Menu Feature Options Description Plug & Play O/S • No Specifies if a Plug and Play operating system is being used. • Yes (default) 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. Reset Configuration Data Clears the BIOS configuration data on the next boot. • No (default) • Yes Memory Cache Enables or disables the memory cache. • Disabled • Enabled (default) ECC Configuration Specifies ECC memory operation. • Non-ECC (default) • ECC Resource Configuration, No options Configures memory blocks and IRQs for legacy ISA submenu devices. When selected, displays the Resource Configuration submenu. Peripheral Configuration, No options Configures peripheral ports and devices. When submenu selected, displays the Peripheral Configuration submenu. Keyboard Features, No options Configures keyboard features. When selected, submenu displays the Keyboard Features submenu. Video Configuration, No options Configures video features. When selected, displays submenu the Video Configuration submenu. DMI Events Logging, No options Configures DMI Events Logging. When selected, submenu displays the DMI Events Logging submenu. 65 AL440LX Motherboard Technical Product Specification 4.3.1 Resource Configuration Submenu This submenu is for configuring the memory and interrupts. Table 49. Resource Configuration Submenu Feature Options Description Memory • C800 - CBFF Available (default) | Reserved Reserves specific Reservation • CC00- CFFF Available (default) | Reserved upper memory blocks for use by legacy ISA • D000 - D3FF Available (default) | Reserved devices. • D400 - D7FF Available (default) | Reserved • D800 - DBFF Available (default) | Reserved Memory hole frees • DC00 - DFFF Available (default) | Reserved address space in RAM • Memory hole Disabled (default) | Conventional | Extended for an legacy ISA boards. IRQ • IRQ3 Available (default) | Reserved Reserves specific Reservation IRQs for use by • IRQ4 Available (default) | Reserved legacy ISA devices. • IRQ5 Available (default) | Reserved • IRQ7 Available (default) | Reserved An * (asterisk) • IRQ10 Available (default) | Reserved displayed next to an • IRQ11 Available (default) | Reserved IRQ indicates an IRQ conflict. 66 BIOS Setup Program 4.3.2 Peripheral Configuration Submenu This submenu is for the configuring the computer peripherals. Table 50. Peripheral Configuration Submenu Feature Options Description Serial port A • Disabled Configures serial port A. • Enabled Auto assigns the first free COM port, normally COM1, • Auto (default) the address 3F8h and the interrupt IRQ4. An * (asterisk) displayed next to an address indicates a conflict with another device. Serial port B • Disabled Configures serial port B. • Enabled Auto assigns the first free COM port, normally COM2, • Auto (default) 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. † † If an ATI mach32 or an ATI mach64 video controller is active as an add-in card, the COM4, 2E8h address will not appear in the list of options for either serial port. Mode • Normal (default) Specifies the mode for Serial Port B for normal (COM 2) • IrDA or infrared applications. • ASK-IR Parallel port • Disabled Configures the parallel port. • Enabled Auto assigns LPT1 the address 378h and the interrupt • Auto (default) IRQ7. An * (asterisk) displayed next to an address indicates a conflict with another device. Mode Selects the mode for the parallel port. • Output Only • Bi-directional (default) † Output Only operates in AT -compatible mode. • EPP Bi-directional operates in bidirectional PS/2-compatible • ECP mode. EPP is Extended Parallel Port mode, a high-speed bidirectional mode. ECP is Enhanced Capabilities Port mode, a high-speed bidirectional mode. Floppy disk • Disabled Configures the floppy disk controller. controller • Enabled (default) IDE controller • Disabled Configures the IDE controller. • Primary Both specifies both the primary and secondary the • Secondary primary and secondary channel are used. • Both (default) Audio • Disabled Enables or disables the onboard audio subsystem. • Enabled (default) Legacy USB • Disabled (default) Enables support for legacy universal serial bus devices. Support • Enabled 67 AL440LX Motherboard Technical Product Specification 4.3.3 Keyboard Features Submenu This submenu is for setting keyboard features. Table 51. Keyboard Features Submenu Feature Options Description Numlock • Auto (default) Specifies the power on state of the Numlock • On feature on the numeric keypad of the keyboard. • Off Key Click • Disabled (default) Enables the key click option. • Enabled Keyboard auto-repeat rate • 30/sec (default) Selects the key repeat rate. • 26.7/sec • 21.8/sec • 18.5/sec • 13.3/sec • 10/sec • 6/sec • 2/sec Keyboard auto-repeat delay • ¼ sec Selects the delay before key repeat. • ½ sec (default) • ¾ sec • 1 sec 4.3.4 Video Configuration Submenu This submenu is for configuring video features. Table 52. Video Configuration Submenu Feature Options Description Palette Snooping • Disabled (default) Controls the ability of a primary PCI graphics controller to • Enabled share a common palette with an ISA add-in video card. 4.3.5 DMI Event Logging Submenu This submenu is for setting keyboard features. Table 53. 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 • No (default) Clears the DMI Event Log after rebooting. • Yes Event Logging • Disabled Enables logging of DMI events. • Enabled (default) ECC Event Logging • Disabled (default) Enables logging of ECC events. • Enabled Mark DMI events as read No options Marks all DMI events as read. 68 BIOS Setup Program 4.4 Security Menu This menu is for setting passwords and security features. Table 54. 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 Specifies the user password. alphanumeric characters. Set Supervisor Password Password can be up to seven Specifies the supervisor password. alphanumeric characters. Unattended Start • Disabled (default) Enables the unattended start feature. When • Enabled 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 55. Power Menu Feature Options Description Power Management Enables or disables the BIOS power • Disabled management feature. • Enabled (default) Fan Always On Forces fan(s) connected to the onboard fan • No header(s) to remain on when the computer is in • Yes (default) a power management state. Inactivity Timer • Off (default) Specifies the amount of time before the computer enters standby mode. • 1 Minute • 2 Minutes • 4 Minutes • 6 Minutes • 8 Minutes • 12 Minutes • 16 Minutes Hard Drive • Disabled Enables power management for hard disks • Enabled (default) during standby and suspend modes. VESA Video Power Down • Disabled Enables power management for video during • Enabled (default) standby and suspend modes. 69 AL440LX Motherboard Technical Product Specification 4.6 Boot Menu This menu is for setting the boot features and the boot sequence. Table 56. Boot Menu Feature Options Description Restore on • Stay Off Specifies how the computer responds following a power AC/Power Loss failure. • Last State (default) Stay Off keeps power off until power button pressed. • Power On Last State restores previous power state before a power failure. Power On restores power without restoring previous power state. On Modem Ring • Stay Off Specifies how the computer responds to an incoming call • Power On (default) on an installed modem when the power is off. On LAN Specifies how the computer responds to a LAN wakeup • Stay Off • Power On (default) event when the power is off. On PME Specifies how the computer responds to a PCI power • Stay Off management enable event when the power is off. • Power On (default) QuickBoot Mode Enables the computer to boot without running certain • Enabled POST tests. • Disabled (default) Scan User Flash Enables the BIOS to scan the flash memory for user • Disabled (default) Area binary files that are executed at boot time. • Enabled First Boot Device • Removable devices Specifies the boot sequence from the available devices. To specify boot sequence: • Hard Drive Second Boot Device • ATAPI CD-ROM 1. Select the boot device with <↑> or <↓>. Third Boot Device Drive 2. Press <+> to move the device up the list or <-> to Fourth Boot Device • Network boot 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 No options Lists available hard drives. When selected, displays the Hard Drive submenu. Removable Devices, No options Lists available removable devices. When selected, submenu displays the Removable Devices submenu. 70 BIOS Setup Program 4.6.1 Hard Drive Submenu This submenu is for configuring the boot sequence for hard drives. Table 57. Hard Drive Submenu Options Description • Installed hard drive Specifies the boot sequence for the hard drives attached to the computer. To • Bootable ISA Cards 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 58. Removable Devices Submenu Options Description • Legacy Floppy Drives Specifies the boot sequence for the removable 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. 4.7 Exit Menu This menu is for exiting the Setup program, saving changes, and loading and saving defaults. Table 59. 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. 71 AL440LX Motherboard Technical Product Specification 72 5 Error Messages and Beep Codes 5.1 BIOS Error Messages Table 60. BIOS Error Messages Error Message Explanation Diskette drive A error or Drive A: or B: is present but fails the POST diskette tests. Check that the Diskette drive B error drive is defined with the proper diskette type in Setup and that the diskette drive is installed correctly. Extended RAM Failed at offset: Extended memory not working or not configured properly at offset nnnn. nnnn Failing Bits: nnnn The hex number nnnn is a map of the bits at the RAM address (System, Extended, or Shadow memory) that failed the memory test. Each 1 in the map indicates a failed bit. Fixed Disk 0 Failure or Fixed disk is not working or not configured properly. Check to see if fixed Fixed Disk 1 Failure or disk is installed properly. Run Setup be sure the fixed-disk type is Fixed Disk Controller Failure correctly identified. Incorrect Drive A type - run Type of floppy drive for drive A: not correctly identified in Setup. SETUP Incorrect Drive B type - run Type of floppy drive for drive B: not correctly identified in Setup. SETUP Invalid NVRAM media type Problem with NVRAM (CMOS) access. Keyboard controller error The keyboard controller failed test. Try replacing the keyboard. Keyboard error Keyboard not working. Keyboard error nn BIOS discovered a stuck key and displays the scan code nn for the stuck key. Keyboard locked - Unlock key Unlock the system to proceed. switch Monitor type does not match Monitor type not correctly identified in Setup. CMOS - Run SETUP Operating system not found Operating system cannot be located on either drive A: or drive C:. Enter Setup and see if fixed disk and drive A: are properly identified. Parity Check 1 Parity error found in the system bus. BIOS attempts to locate the address and display it on the screen. If it cannot locate the address, it displays ????. Parity Check 2 Parity error found in the I/O bus. BIOS attempts to locate the address and display it on the screen. If it cannot locate the address, it displays ????. Press to resume, to Displayed after any recoverable error message. Press to start the Setup boot process or to enter Setup and change any settings. continued � 73 AL440LX Motherboard Technical Product Specification Table 60. BIOS Error Messages (continued) Error Message Explanation Real time clock error Real-time clock fails BIOS test. May require motherboard repair. Shadow RAM Failed at offset: Shadow RAM failed at offset nnnn of the 64 KB block at which the error nnnn was detected. System battery is dead - The CMOS clock battery indicator shows the battery is dead. Replace Replace and run SETUP the battery and run Setup to reconfigure the system. System cache error - Cache RAM cache failed the BIOS test. BIOS disabled the cache. disabled System CMOS checksum bad - System CMOS RAM has been corrupted or modified incorrectly, perhaps run SETUP 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: System RAM failed at offset nnnn of the 64 KB block at which the error nnnn was detected. System timer error The timer test failed. Requires repair of system motherboard. 74 Error Messages and Beep Codes 5.2 Port 80h POST Codes During the POST, the BIOS generates diagnostic progress codes (POST codes) to I/O port 80h. If the POST fails, execution stops and the last POST code generated is left at port 80h. This code is useful for determining the point where an error occurred. Displaying the POST codes requires an add-in card (often called a POST card). The POST card can decode the port and display the contents on a medium such as a seven-segment display. These cards can be purchased from JDR Microdevices or other sources. The following table provides the POST codes that can be generated by the BIOS. Some codes are repeated in the table because that code applies to more than one operation. Table 61. 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 valuesnew 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 continued � 75 AL440LX Motherboard Technical Product Specification Table 61. Port 80h Codes (continued) Code Description of POST Operation Currently In Progress 2Ah Clear 512 KB base RAM 2Ch RAM failure on address line xxxx* 2Eh RAM failure on data bits xxxx* of low byte of memory bus 2Fh Enable cache before system BIOS shadow 30h RAM failure on data bits xxxx* of high byte of memory bus 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 valuesnew 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 � 76 Error Messages and Beep Codes Table 61. Port 80h Codes (continued) Code Description of POST Operation Currently In Progress 5Ch Test RAM between 512 and 640 KB 60h Test extended memory 62h Test extended memory address lines 64h Jump to UserPatch1 66h Configure advanced cache registers 67h Initialize multiprocessor APIC 68h Enable external and processor caches 69h Setup System Management Mode (SMM) area 6Ah Display external L2 cache size 6Ch Display shadow-area message 6Eh Display possible high address for UMB recovery 70h Display error messages 72h Check for configuration errors 74h Test real-time clock 76h Check for keyboard errors 7Ah Test for key lock on 7Ch Set up hardware interrupt vectors 7Eh Initialize coprocessor if present 80h Disable onboard Super I/O ports and IRQs 81h Late POST device initialization 82h Detect and install external RS232 ports 83h Configure non-MCD IDE controllers 84h Detect and install external parallel ports 85h Initialize PC-compatible PnP ISA devices 86h Re-initialize onboard I/O ports 87h Configure motherboard configurable devices 88h Initialize BIOS Data Area 89h Enable Non-Maskable Interrupts (NMIs) 8Ah Initialize extended BIOS data area 8Bh Test and initialize PS/2 mouse 8Ch Initialize floppy controller 8Fh Determine number of ATA drives 90h Initialize hard-disk controllers 91h Initialize local-bus hard-disk controllers 92h Jump to UserPatch2 93h Build MPTABLE for multiprocessor boards 94h Disable A20 address line (Rel. 5.1 and earlier) 95h Install CD ROM for boot continued � 77 AL440LX Motherboard Technical Product Specification Table 61. Port 80h Codes (continued) Code Description of POST Operation Currently In Progress 96h Clear huge ES segment register 97h Fix up multiprocessor table 98h Search for option ROMs 99h Check for SMART Drive 9Ah Shadow option ROMs 9Ch Set up power management 9Eh Enable hardware interrupts 9Fh Determine number of ATA and SCSI drives A0h Set time of day A2h Check key lock A4h Initialize typematic rate A8h Erase F2 prompt AAh Scan for F2 key stroke ACh Enter SETUP AEh Clear IN POST flag B0h Check for errors B2h POST done - prepare to boot operating system B4h One short beep before boot B5h Terminate QuietBoot B6h Check password (optional) B8h Clear global descriptor table B9h Clean up all graphics BAh Initialize DMI parameters BBh Initialize PnP Option ROMs BCh Clear parity checkers BDh Display MultiBoot menu BEh Clear screen (optional) BFh Check virus and backup reminders C0h Try to boot with INT 19 C1h Initialize POST Error Manager (PEM) C2h Initialize error logging C3h Initialize error display function C4h Initialize system error handler continued � 78 Error Messages and Beep Codes Table 61. Port 80h Codes (continued) Code Description of POST Operation (The following are for boot block in flash ROM) E0h Initialize the chipset E1h Initialize the bridge E2h Initialize the processor E3h Initialize system timer E4h Initialize system I/O E5h Check force recovery boot E6h Checksum BIOS ROM E7h Go to BIOS E8h Set huge segment E9h Initialize multiprocessor EAh Initialize OEM special code EBh Initialize PIC and DMA ECh Initialize memory type EDh Initialize memory size EEh Shadow boot block EFh System memory test F0h Initialize interrupt vectors F1h Initialize runtime clock F2h Initialize video F3h Initialize beeper F4h Initialize boot F5h Clear huge segment F6h Boot to mini-DOS F7h Boot to full DOS 79 AL440LX Motherboard Technical Product Specification 5.3 BIOS Beep Codes Beeps codes represent a terminal error. If the BIOS detects a terminal error condition, it outputs an error beep code, halts the POST, and attempts to display a port 80h code on the POST card’s LED display. Table 62. Beep Codes Beeps 80h Code Description 1 B4h One short beep before boot 1-2 98h Search for option ROMs 1-2-2-3 16h BIOS ROM checksum 1-3-1-1 20h Test DRAM refresh 1-3-1-3 22h Test keyboard controller 1-3-4-1 2Ch RAM failure on address line xxxx* 1-3-4-3 2Eh RAM failure on data bits xxxx* of low byte of memory bus 1-4-1-1 30h RAM failure on data bits xxxx* of high byte of memory bus 2-1-2-3 46h Check ROM copyright notice 2-2-3-1 58h Test for unexpected interrupts 80 6 Specifications and Customer Support 6.1 Online Support Find information about Intel boards under “Product Info” or “Customer Support” at this World Wide Web site: http://www.intel.com/ 6.2 Specifications The motherboard complies with the following specifications: Table 63. Compliance with Specifications Specification Description Revision Level A.G.P. Accelerated Graphics Port Revision 1.0, July, 1996, Intel Corporation. Interface Specification The specification is available through the Accelerated Graphics Implementers Forum at: http://www.agpforum.org/. APM Advanced Power Management Revision 1.2, February, 1996 BIOS interface specification Intel Corporation, Microsoft Corporation ATA-3 Information Technology - AT X3T10/2008D Revision 6 Attachment-3 Interface ATA Anonymous FTP Site: fission.dt.wdc.com ATAPI ATA Packet Interface for CD- SFF-8020i Revision 2.5 ROMs (SFF) Fax Access: (408) 741-1600 ATX ATX form factor specification Revision 2.01, February 1997 Intel Corporation, The specification is available at: http://www.intel.com/ DMI Desktop Management Interface Version 2.0, October 16, 1995 BIOS specification American Megatrends Inc., Award Software International Inc., Dell Computer Corporation, Intel Corporation, Phoenix Technologies Ltd., SystemSoft Corporation El Torito Bootable CD-ROM format Version 1.0, January 25, 1995 specification Phoenix Technologies Ltd., IBM Corporation. The El Torito specification is available on the Phoenix Web site http://www.ptltd.com/techs/specs.html. EPP Enhanced Parallel Port IEEE 1284 standard, Mode [1 or 2], v1.7 continued � 81 AL440LX Motherboard Technical Product Specification Table 63. Compliance with Specifications (continued) IrDA Serial Infrared Physical Layer Version 1.1, October 17, 1995 Link specification Infrared Data Association. Management LM78 Microprocessor System Current Web site: extension Hardware Monitor http://www.national.com/pf/LM/LM78.html hardware PCI PCI Local Bus specification Revision 2.1, June 1, 1995, PCI Special Interest Group Phoenix BIOS PhoenixBIOS Revision 4.0, February 27, 1997, Phoenix Technologies Ltd. Plug and Play Plug and Play BIOS Version 1.0a, May 5, 1994 specification Compaq Computer Corporation, Phoenix Technologies Ltd., Intel Corporation SDRAM DIMMs 4-Clock, 66 MHz, 64-bit Revision 1.0, January 27, 1997, Intel Corporation (64-bit) Unbuffered DIMM specification SDRAM DIMMs 4-Clock 66 MHz 72-bit Revision 1.0, January 27, 1997, Intel Corporation (72-bit) Unbuffered DIMM specification USB Universal serial bus Revision 1.0, January 15, 1996 specification Compaq Computer Corporation, Digital Equipment Corporation, IBM PC Company, Intel Corporation, Microsoft Corporation, NEC, Northern Telecom 82 Index 16450, 19 configuration jumper settings, 42 16550A, 19 configuration modes, 42 configure mode, 43 connectors A A.G.P., 31 A.G.P. (Accelerated Graphics Port), 7, 16, 17 audio in, 37 connector, 31 audio out, 37 AC watts, 45 back panel, 36 AGPset, 7 CD audio, 27 APM, 58 chassis security, 27 ATA-33, 81 floppy drive, 29 ATAPI devices, configuring, 57 front panel, 33 ATX, 81 IDE, 30 infrared, 35 audio ISA bus, 40, 41 line in connector, 37 keyboard / mouse, 37 line out connector, 37 LED, 35 audio drivers, 22 location of, 26 auto-configuration, 56, 57 microphone, 38 MIDI / game port, 38 B parallel port, 38 back panel, connectors, 36 PCI bus, 39 battery, 18 power supply, 32, 34 beep codes, 80 power switch, 35 reset switch, 34 BIOS SCSI hard drive LED, 35 error messages, 73 SCSI Hard Drive LED, 28 overview, 55 serial port, 37 recovering, 60 sleep/resume switch, 35 revision level, 55 speaker, 34 shadowing, 55 telephony, 27 upgrading, 55 USB, 37 boot devices, 59 Wake on Lan, 27 Wake on RING, 28 C wavetable, 28 CD-ROM Consumer Infrared, 20 audio connector, 27 CSA compliance, 47 booting from, 59 current/power specifications, 45 certification markings, 48 chassis security, 24 connector, 27 chipset, 7 component list, 9 configuration header, 42 83 AL440LX Motherboard Technical Product Specification D I Desktop Management Interface (DMI), 58 I/O address, audio subsystem, 22 DIMM sockets, 14 I/O addresses, default, 50 DMA I/O connectors audio subsystem, 22 back panel, 36 channels, 49 front panel, 33 DMA controller, 17 I/O controller, 7, 19 DMI, 58 I/O shield, 11 DPMS, 58 IDE interface, 17, 18 configuring, 57 drivers, audio, 22 IEC 950 compliance, 47 infrared, 20 E infrared (IR), connector, 34, 35 ECC memory, 15 interrupt controller, 17 ECHS (Extended Cylinder Head Sector), 18 interrupts ECP, 49 audio subsystem, 22 El Torito CD-ROM specification, 59 PCI and ISA, 56 EN 50 082-1 compliance, 47 sharing PCI, 53 EN 55 022 compliance, 47 INTx PCI interrupt classification, 53 EN 60 950 compliance, 47 IPL devices, 57 environmental specifications, 44 IrDA, 20 EPP, 49 IRQ, audio subsystem, 22 error detection memory, 15 ISA error logging, 58 bus connectors, 40, 41 error messages legacy devices, 57 beep codes, 80 ISA Plug and Play, 19 port 80h codes, 75 event detection, 58 J - K expansion slots, 7, 39 jumpers BIOS recover, 60 F location on motherboard, 42 Flash memory, upgrading, 55 keyboard, connector, 37 Flash update, 59 Flash user area, 60 L floppy drive, connector, 29 language support, 59 floppy drive controller, 20 LBA, 57 form factor, 81 legacy devices, 57 ATX, 10 Logical Block Addressing (LBA), 57 front panel connectors, 33 function keys, 61 G - H game port connector, 38 hard disk, LED connector, 34, 35 hot key, 20 84 Index POST (Power On Self Test), diagnostic M codes, 75 management extension hardware, 24 POST (Power-On Self Test), 55 manufacturing options, 9, 23 power management, 58 memory DPMS, 58 ECC, 15 power management control, 17 map of, 49 power supply, connector, 32, 34 SDRAM, 14 power supply specifications, 45 type supported, 7, 14 power switch connector, 34, 35 microphone connector, 38 powerdown warning, 45 MIDI port connector, 38 printer port, connector, 38 motherboard processor, 7 components on, 9 product certification markings, 48 connectors on, 26 jumper location, 42 R manufacturing options, 9 mouse, connector, 37 real-time clock, 18 MTBF, 44 recovering BIOS data, 60 recovery mode, 43 regulatory compliance, 47, 48 N - O reliability, 44 network, booting from, 59 remote reset, 24 normal mode, 43 reset switch connector, 34 OEM logo, 60 resources, configuration, 66 options, 23 manufacturing, 9 S P safety regulations, 47 SCSI Hard Drive LED, header, 28, 35 parallel port, 19 SDRAM, 14 connector, 38 serial ports, 19 PC87307, 19 connectors, 37 PCI Setup program, 61 bridges, 56 advanced menu, 65 bus connectors, 39 boot menu, 70 configuration, 52, 56 exit menu, 71 expansion slots, 53 main menu, 62 IDE connectors, 30 power menu, 69 interrupt sharing, 53 security menu, 69 interrupts, 56 sharing interrupts, 53 peripherals, configuration, 67 shock specifications, 44 Phoenix BIOS, 8 Single Edge Contact (S.E.C.) cartridge, 7 PIIX4, 53 Sleep mode, 35 PIRQ signals, 53 sleep/power LED connector, 34 Plug and Play, configuration, 56 sleep/resume switch connector, 34, 35 Plug and Play OS, 57, 58 Slot 1 connector, 7 port 80h codes, 24, 75 slots for add-in cards, 39 85 AL440LX Motherboard Technical Product Specification SMI (System Management Interrupt), 35 V SMM (System Management Mode), 35 vibration specifications, 44 soft-off, 32 voltage, specifications, 45 speaker, connector, 34 specifications, 81 W Super I/O controller, 7, 19 System Management Interrupt, see SMI Wake on LAN connector, 27 System Management Mode, see SMM description, 25 System Management Mode (SMM), 58 Wake on Ring connector, 28 T description, 25 telephony, connector, 27 wattage, 45 telephony connector, 23 wavetable, 23 temperature, specifications, 44 wavetable connector, 28 World Wide Web site, 81 U UARTs, 19 UL compliance, 47 upgrade Flash utility, 55 USB, 7, 18, 82 BIOS support of, 60 connectors, 37 USB controller, 17 user area of Flash, 60 86