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AOpen AX34-U Online Manual

AOpen AX34-U Online Manual

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AX34-U
DOC. NO.: AX34U-OL-E0203B
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Summary of Contents for AOpen AX34-U

  • Page 1 AX34-U DOC. NO.: AX34U-OL-E0203B...

  • Page 2: Table Of Contents

    ’ ’ AX34-U .............................1 What’s in this manual ..............................2 You Must Notice ................................8 Before You Start ................................9 Overview ..................................10 Feature Highlight ................................11 Quick Installation Procedure............................14 Motherboard Map ................................15 Block Diagram ................................16 Hardware Installation ........................17 JP14 Clear CMOS Data ..............................18 CPU Installation................................19...
  • Page 3 AC Power Auto Recovery ..............................33 IDE, Floppy, IDE RAID Connector ..........................34 WOM (Zero Voltage Wake on Modem) Connector ......................37 WOL (Wake on LAN) ..............................40 AGP (Accelerated Graphic Port) Expansion Slot ......................42 PC99 Color Coded Back Panel............................44 Support 2 USB Port..............................45 JP12 Enable/Disable Onboard Sound ...........................46 CD Audio Connector ..............................47 Modem Audio Connector ...............................48...
  • Page 4 Driver and Utility..........................59 Auto-run Menu from Bonus CD Disc ..........................60 Installing VIA 4 in 1 Driver .............................61 Installing Ultra ATA/100 IDE Driver ..........................62 Installing Onboard Sound Driver............................63 ACPI Suspend to Hard Drive ............................65 ACPI Suspend to RAM (STR) ............................69 AWARD BIOS ..........................71 About BIOS Function Description…...
  • Page 5 AOpen Bonus Pack CD ..............................81 APM (Advanced Power Management) ...........................81 ATA (AT Attachment)..............................81 ATA/66 ...................................81 ATA/100 ..................................82 BIOS (Basic Input/Output System) ..........................82 Bus Master IDE (DMA mode)............................82 CNR (Communication and Networking Riser) ........................82 CODEC (Coding and Decoding) ............................83 DDR (Double Data Rated) SDRAM..........................83 DIMM (Dual In Line Memory Module) ..........................83...
  • Page 6 Flash ROM ..................................85 FSB (Front Side Bus) Clock............................86 C Bus ..................................86 IEEE 1394 ..................................86 Parity Bit..................................87 PBSRAM (Pipelined Burst SRAM) ..........................87 PC-100 DIMM ................................87 PC-133 DIMM ................................87 PC-1600 or PC-2100 DDR DRAM ..........................87 PCI (Peripheral Component Interface) Bus........................88 PDF Format ...................................88 PnP (Plug and Play) ..............................88 POST (Power-On Self Test) ............................88 RDRAM (Rambus DRAM)..............................89...
  • Page 7 SPD (Serial Presence Detect) ............................90 Ultra DMA ..................................91 USB (Universal Serial Bus)............................91 VCM (Virtual Channel Memory) .............................92 ZIP file ...................................92 Troubleshooting ...........................93 Technical Support........................97 Product Registration........................100 How to Contact Us........................101...

  • Page 8: You Must Notice

    All of the specifications and information contained in this manual are subject to change without notice. AOpen reserves the right to revise this publication and to make reasonable changes. AOpen assumes no responsibility for any errors or inaccuracies that may appear in this manual, including the products and software described in it.

  • Page 9: Before You Start

    This Online Manual will introduce to the user how this product is installed. All useful information will be described in later chapters. Please keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved format, we recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD disc or you can get free download from...

  • Page 10: Overview

    100MB/s. Further flexibility can be achieved by taking advantage of the Audio/Modem Riser (AMR) card option that allows audio, modem on a single baseboard design. Besides, the AX34-U motherboard has an AD 1885 AC97 CODEC chipset onboard for provides high performance and magic surround stereo sound to let people enjoy working with it.

  • Page 11: Feature Highlight

    The AGP video card supports data transfer rate up to 1056MB/s. As AX34-U motherboard includes one AGP expansion slot for a bus mastering AGP graphic card, For AD and SBA signaling, AX34-U motherboard can support 133MHz 2X/4X mode. Of four PCI slots...
  • Page 12 33/66/100, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices. On-board AC97 Sound AX34-U M/B uses the AD 1885 AC97 sound chip. This on-board audio includes a complete audio recording and playback system.
  • Page 13 98/ME/2000 series compatibility, and supports Soft-Off, STR (Suspend to RAM, S3), STD (Suspend to Disk, S4), WOM (Wake On Modem) features. Super Multi-I/O The AX34-U provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilities.

  • Page 14: Quick Installation Procedure

    This page gives you a quick procedure on how to install your system. Follow each step accordingly. Installing CPU and Fan Installing System Memory (DIMM Connecting Front Panel Cable Connecting IDE and Floppy Cable Connecting ATX Power Cable Connecting Back Panel Cable Power-on and Load BIOS Setup Default Setting CPU Frequency Reboot...

  • Page 15: Motherboard Map

    Motherboard Map AUX-IN MODEM-CN AC’97 CODEC Chipset Front Audio Connector 2Mbit Programmable Flash ROM CD-IN Resettable Fuse AGP 4x Expansion Slot WOL (Wake On LAN) 1500μF Low ESR Capacitors 32bit PCI Expansion Slot x 4 370-pin CPU Socket with Voltage &...

  • Page 16: Block Diagram

    PC-100/133 SDRAM Up to 1.5GB DIMM Socket x3 Socket 370 Intel Pentium III (Both Tualatin 32-bit PCI Slot x4 66/100/133MHz & Coppermine are System Bus supported) /Celeron CPU PCI Bus North Bridge Primary VT82C694T 33/66100 Channel IDE Drive x4 Secondary Channel South AC’97 Link...

  • Page 17: Hardware Installation

    This chapter describes jumpers, connectors and hardware devices of this motherboard. Note: Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards, and other components. Always observe the following precautions before you install a system component. Do not remove a component from its protective packaging until you are ready to install it. Wear a wrist ground strap and attach it to a metal part of the system unit before handling a component.

  • Page 18: Jp14 Clear Cmos Data

    You can clear CMOS to restore system default setting. To clear the CMOS, follow the procedure below. Turn off the system and unplug the AC power. Remove ATX power cable from connector PWR2. Locate JP14 and short pins 2-3 for a few seconds. Return JP14 to its normal setting by shorting pins 1 &...
  • Page 19 ® ® This motherboard supports Intel Pentium III (Both Coppermine and Tualatin are supported) and Celeron™ Socket 370 series CPU. Be careful of CPU orientation when you plug it into CPU socket. 2. Locate Pin 1 in the socket and look for a black dot or cut edge on the 1.

  • Page 20: Cpu Installation

    3. Press down the CPU socket level and finish CPU installation. CPU cut edge Note: If you do not match the CPU socket Pin 1 and CPU cut edge well, it may damage the CPU. Note: This socket supports FC-PGA /FC-PGA2 package CPU, which is the latest CPU package developed by Intel.
  • Page 21 This jumper is used to specify the relationship of PCI and clock. Generally speaking, if you are not overclockers, we recommend you to set at the default setting. Pin 1 FSB=100 FSB=66 FSB=133 Auto Warning: VIA Apollo Pro 133T (Default) chipset supports maximum...
  • Page 22 Clock = CPU FSB Clock / Clock Ratio Clock = PCI Clock x 2 Clock Ratio CPU (Host) Memory 66MHz 33MHz 66MHz PCI x2 or x3 2X, overclocking 75MHz 37.5MHz 75MHz PCI x2 or x3 100MHz 33MHz 66MHz PCI x2 or x3 or x4 3X, overclocking 112MHz 37.3MHz...

  • Page 23: Cpu Jumper-Less Design

    CPU VID signal and SMbus clock generator provide CPU voltage auto-detection and allows the user to set the CPU frequency through the BIOS setup, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less designs are eliminated. There will be no worry of wrong CPU voltage detection. Clock Generator ®...
  • Page 24 This motherboard is CPU jumper-less design, you can set CPU frequency through the BIOS setup, and no jumpers or switches are needed. BIOS Setup > Frequency/Voltage Control > CPU Speed Setting CPU Ratio 3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x, 7.5x, 8x, 8.5x, 9x, 9.5x, 10x, 10.5x, 11x, 11.5x, 12x, 12.5x, 13x, 13.5x, 14x, 14.5x, 15x, 15.5x and 16x 66.8, 75, 83.3, 100, 103, 105, 110, 112, 115, 120, 124, 133.3, 140, and 150 MHz (By BIOS Table)
  • Page 25 Note: This motherboard support CPU Core Frequency = CPU Clock * CPU Ratio auto-detection function. Hence, you PCI Clock = CPU Bus Clock / Clock Ratio don’t need to setup the CPU frequency manually. Clock = PCI Clock x 2 CPU Core FSB Clock Ratio...
  • Page 26 Pentium III 750E 750MHz 100MHz Pentium III 800E 800MHz 100MHz Pentium III 850E 850MHz 100MHz 8.5x Pentium III 533EB 533MHz 133MHz Pentium III 600EB 600MHz 133MHz 4.5x Pentium III 667EB 667MHz 133MHz Pentium III 733EB 733MHz 133MHz Pentium III 800EB 800MHz 133MHz Pentium III 866EB...

  • Page 27: Cpu And Housing Fan Connector (With H/W Monitoring)

    Plug in the CPU fan cable to the 3-pin CPU FAN connector. If you have housing fan, you can also plug it on System FAN connector. CPU FAN Connector Note: Some CPU fans do not have sensor pin, so that cannot support fan +12V monitoring.

  • Page 28: Dimm Sockets

    This motherboard has four 168-pin DIMM sockets that allow you to install PC100 PC133 memory up to 1.5GB. DIMM1 DIMM2 DIMM3...
  • Page 29 DIMM can be single side or double side; it has 64 bit data and 2 or 4 clock signals. We strongly recommend choosing 4-clock SDRAM for its reliability SDRAM DIMM Module ECC-Register DIMM Module Note: Based on VIA Apollo Pro 133T chipset specification, we recommend you that using double-side SDRAM modules with DIMM socket 1 &...
  • Page 30 Please follow the procedure as shown below to finish memory installation. Make sure the DIMM module’s pin face down and match the socket’s size as depicted below. 20 pins 60 pins 88 pins Insert the module straight down to the DIMM slot with both hands and press down firmly until the DIMM module is securely in place.

  • Page 31: Front Panel Connector

    Attach the power LED, speaker, Power and reset switch connectors to the corresponding pins. If you enable “Suspend Mode” item in BIOS Setup, the ACPI & Power LED will keep flashing while the system is in suspend mode. Locate the power switch cable from your ATX housing. It is 2-pin female connector from the housing front panel.

  • Page 32: Atx Power Connector

    The ATX power supply uses 20-pin connector shown below. Make sure you plug in the right direction. +12V 5VSB PW-OK PS-ON +3.3V -12V +3.3V +3.3V A traditional ATX system should remain at power off stage when AC power resumes from power failure. This design is inconvenient for a network server or workstation, without an UPS, that needs to keep power-on.

  • Page 33: Ide, Floppy, Ide Raid Connector

    Connect 34-pin floppy cable and 40-pin, 80-wire IDE cable to floppy connector FDC and IDE connector. Be careful of the pin1 orientation. Wrong orientation may cause system damage. Pin 1 FDD Connector Secondary Secondary Master (3rd) Slave (4th) IDE 2 (Secondary) IDE 1 (Primary) Pin 1 ATA 33/66/100...
  • Page 34 IDE1 is also known as the primary channel and IDE2 as the secondary channel. Each channel supports two IDE devices that make a total of four devices. In order to work together, the two devices on each channel must be set differently to Master and Slave mode.
  • Page 35 The IrDA connector can be configured to support wireless infrared module, with this module and application software such as Laplink or Windows 95 Direct Cable Connection, the user can transfer files to or from laptops, notebooks, PDA devices and printers. This connector supports HPSIR (115.2Kbps, 2 meters) and ASK-IR (56Kbps). Install the infrared module onto the IrDA connector and enable the infrared function from BIOS Setup, UART Mode, make sure to have the correct orientation when you plug in the IrDA connector.

  • Page 36: Wom (Zero Voltage Wake On Modem) Connector

    This motherboard implements special circuit to support Wake On Modem, both Internal modem card and external box modem are supported. Since Internal modem card consumes no power when system power is off, it is recommended to use an internal modem. To use internal modem, connect 4-pin cable from RING connector of modem card to the WOM connector on the motherboard.
  • Page 37 Traditional Green PC suspend mode does not really turn off the system power supply, it uses external box modem to trigger MB COM port and resume back to active. Serial Port (Modem Side) Pin 1 Serial Port (Motherboard Side)
  • Page 38 With the help of the ATX soft power On/Off, it is possible to have a system totally power off, and wakeup to automatically answer a phone call as an answering machine or to send/receive a fax. You may identify whether or not your system is in true power off mode by checking to see if the fan of your power supply is off.

  • Page 39: Wol (Wake On Lan)

    This feature is very similar as Wake On Modem, but it goes through local area network. To use Wake On LAN function, you must have a network card with chipset that supports this feature, and connect a cable from LAN card to motherboard WOL connector. The system identification information (probably IP address) is stored on network card and because there is a lot of traffic on the Ethernet, you need to install network management software, such as ADM, for the checking of how to wake up the system.
  • Page 40 WOL Connector (Ethernet Card Side) WOL Connector (Motherboard Side)

  • Page 41: Agp (Accelerated Graphic Port) Expansion Slot

    The AX34-U provides an 4x slot. The AGP 4x is a bus interface targeted for high-performance 3D graphic. AGP supports only memory read/write operation and single-master single-slave one-to-one only. AGP uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data transfer rate is 66MHz x 4bytes x 2 = 528MB/s. AGP is now moving to AGP 4x mode, 66MHz...
  • Page 42 is a riser card that supports sound or modem function. Due to the reason that CPU computing power is getting increasingly stronger, the digital processing job can be implemented in main chipset and share CPU power. The analog conversion (CODEC) circuit requires a different and separate circuit design, which is put on AMR card.
  • Page 43 The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, COM1, COM2, Printer, Four USB, AC97 sound and game ports. The view angle of drawing shown here is from the back panel of the housing. SPP/EPP/ECP PS/2 Mouse Parallel Port Game Port Connector PS/2 USB Port...

  • Page 44: Support 2 Nd Usb Port

    This motherboard provides 4 connectors to connect USB devices, such as mouse, keyboard, modem, printer, etc. There are two connectors on the PC99 back panel. You can use proper cable to connect other USB connectors to the back panel or front panel of chassis.
  • Page 45 This motherboard has AC97 sound onboard. JP12 is used to enable or disable onboard AD1885 CODEC chip. If you don’t want to enable the Onboard Audio, you should set this jumper to 2-3, and disable the “OnChip Sound” from BIOS setting > Advanced Chipset Features, before you install your preferred PCI Sound Card.

  • Page 46: Cd Audio Connector

    This connector is used to connect CD Audio cable from CDROM or DVD drive to onboard sound.

  • Page 47: Modem Audio Connector

    This connector is used to connect Mono In/MIC Out cable from internal modem card to onboard sound circuit. The pin 1-2 is Mono In, and the pin 3-4 is MIC Out. Please note that there is no standard for this kind of connector yet, only some internal modem cards implement this connector.

  • Page 48: Aux-In Connector

    This connector is used to connect MPEG Audio cable from MPEG card to onboard sound.

  • Page 49: Front Audio Connector

    If the housing has been designed with an audio port on the front panel, you’ll be able to connect onboard audio to front panel through this connector. By the way, please remove the jumper cap from the Front Audio Connector if you want to connect cable to it.
  • Page 50 This Motherboard implements Flash ROM and a special circuit that allows you to save your current CPU and CMOS Setup configurations without the need of a battery. The RTC (real time clock) can also keep running as long as the power cord is plugged.

  • Page 51: Over-Current Protection

    CPU, memory, HDD, add-on cards installed on this motherboard may be damaged because of component failure, human operating error or unknown nature reason. AOpen cannot guaranty the protection circuit will always work perfectly.

  • Page 52: Hardware Monitoring

    CPU temperature. If any of these systems’ status go wrong, there will be an alarm through the chassis external speaker or buzzer of motherboard (if existed) to warn the user. Fan Speed AOpen H/W Detection Monitoring...

  • Page 53: Resettable Fuse

    Traditional motherboard has fuse for Keyboard and port to prevent over-current or shortage. These fuses are soldered onboard that when it is broken (function as protecting the motherboard), user still cannot replace it and the motherboard is still malfunctioning. With expensive Resettable Fuse, the motherboard can be resumed back to normal function after the fuse had done its protection job.

  • Page 54: Low Esr Capacitor

    μ μ μ μ f f f f μ μ μ μ f f f f The quality of low ESR capacitor (Low Equivalent Series Resistance) during high frequency operation is very important for the stability of CPU power. The idea of where to put these capacitors is another know-how that requires experience and detail calculation.
  • Page 55 The power circuit of the CPU core voltage must be checked to ensure system stability for high speed CPUs (such as the new Pentium III, or when overclocking). A typical CPU core voltage is 2.0V, so a good design should control voltage between 1.860V and 2.140V.

  • Page 56: Layout (Frequency Isolation Wall)

    For high frequency operation, especially overclocking, layout is the most important factor to make sure chipset and CPU working in stable condition. The layout of this motherboard implements AOpen’s unique design called “ Frequency Isolation Wall”. Separating each critical portion of motherboard into...

  • Page 57: Pure Aluminum Heatsink

    Cool down CPU and Chipset is important for system reliability. Aluminum heat sink provides better heat consumption especially when you are trying to overclocking.

  • Page 58: Driver And Utility

    There are motherboard drivers and utilities included in AOpen Bonus CD disc. You don’t need to install all of them in order to boot your system. But after you finish the hardware installation, you have to install your operation system first (such as Windows 98) before you can install any drivers or utilities.

  • Page 59: Auto-Run Menu From Bonus Cd Disc

    You can use the auto-run menu of Bonus CD disc. Choose the utility and driver and select model name.
  • Page 60 You can install the VIA 4 in 1 driver (IDE Bus master (For Windows NT use), VIA ATAPI Vendor Support Driver, VIA AGP, IRQ Routing Driver (For Windows 98 use), VIA Registry (INF) Driver) from the Bonus Pack CD disc Autorun menu. Note: Installing this Bus Master IDE driver may cause Suspend to Hard Drive failure.
  • Page 61 This motherboard comes with an AD1885 AC97 CODEC. You can find the audio driver from the Bonus Pack CD disc auto-run menu.
  • Page 62 First, don’t install any add-on card except AGP card. Install Windows 95 OSR2 v2.1, 1212 or 1214 version and later with USB support. Otherwise, you need to install USBSUPP.EXE. Install the VIA 4 in 1 driver, which includes VIA AGP Vxd driver, IRQ routing driver, and VIA chipset function registry program.

  • Page 63: Acpi Suspend To Hard Drive

    ACPI Suspend to Hard Drive is basically controlled by Windows operation system. It saves your current work (system status, memory and screen image) into hard disk, and then the system can be totally power off. Next time, when power is on, you can resume your original work directly from hard disk within few seconds without go through the Windows booting process and run your application again.

  • Page 64: System Requirement

    System Requirement AOZVHDD.EXE 1.30b or later. Delete config.sys and autoexec.bat. Fresh installation of Windows 98 on a new system 1. Execute "Setup.exe /p j" to install Windows 98 2. After Windows 98's installation is complete, go to the Control Panel > Power Management. a.
  • Page 65 Changing from APM to ACPI (Windows 98 only) 1. Run "Regedit.exe" a. Go through the following path HKEY_LOCAL_MACHINE SOFTWARE MICROSOFT WINDOWS CURRENT VERSION DETECT b. Select "ADD Binary" and name it as "ACPIOPTION". c. Right click and select Modify, add "01" after "0000" to make it "0000 01". d.
  • Page 66 4. Run "Add New Hardware" again and it will find "Advanced Power Management Resource". 5. Click "OK". Tip: Currently we found only ATI 3D Rage Pro AGP card would support ACPI suspend to disk. Please refer to AOpen web site for latest update.

  • Page 67: Acpi Suspend To Ram (Str)

    This motherboard supports ACPI Suspend to RAM function. With this function, you can resume your original work directly from DRAM without going through the Windows 98 booting process and run your application again. Suspend to DRAM saves your current work in the system memory, it is faster than Suspend to Hard Drive but requires power supplied to DRAM, while Suspend to Hard Drive requires no power.
  • Page 68 To implement ACPI Suspend to DRAM, please follow the procedures as below: System Requirement An ACPI OS is required. Currently, Windows 98 is the only choice. The VIA 4 in 1 Driver must have been installed properly. Procedures Changed the following BIOS settings. BIOS Setup >...

  • Page 69: Award Bios

    BIOS provides critical low-level support for standard devices such as hard disk drives, serial and parallel ports. Most BIOS setting of AX34-U motherboard had optimized by AOpen’s R&D engineering team. But, the default setting of BIOS still can’t fine-tune the chipset controlling entire system. Hence, the rest of this chapter is intended to guide you through the process of configuring your system using setup.

  • Page 70: About Bios Function Description

    … AOpen always dedicates to give users a more friendly computer system. Now, we include all function descriptions of BIOS setup program into the BIOS Flash ROM. When you select one function of BIOS setup program, the function description will appeared at right side of screen.

  • Page 71: How To Use Award™ Bios Setup Program

    Award™ BIOS setup program. The following table provides details about how to use keyboard in the Award™ BIOS setup program. By the way, all products of AOpen also provides a special function in the BIOS setup, you can press <F3> key selecting preferred menu language to display.
  • Page 72 Load fail-save setting value from CMOS. Load turbo setting value from CMOS. Save changed setting and exit setup program. Note: AOpen always dedicates to give users a more friendly computer system. Now, we include all function descriptions of BIOS setup program into the BIOS Flash ROM.

  • Page 73: How To Enter Bios Setup

    After you finish the setting of jumpers and connect correct cables. Power on and enter the BIOS Setup, press <Del> during POST (Power-On Self Test). Choose "Load Setup Defaults" for recommended optimal performance. Warning: Please avoid of using "Load Turbo Defaults", unless you are sure your system components (CPU, DRAM, HDD, etc.) are good enough for turbo setting.

  • Page 74: Bios Upgrade

    By doing so, you are taking a risk of BIOS flash failure. If you indeed intent on upgrading, PLEASE BE SURE to use the right BIOS revision for the right motherboard model. AOpen Easy Flash is a little different than traditional flash method. The BIOS binary file and flash routine are linked together and you simply run a single commend to complete the flash process.
  • Page 75 Below are the steps for easy flashing procedures: (applies for Award BIOS ONLY) 1. Download new BIOS upgrade file from AOpen's web site. For example, AX34U2U102.ZIP. 2. Run shareware PKUNZIP (http://www.pkware.com/) which supports miscellaneous operation systems to extract the binary BIOS file and the flash utility.

  • Page 76: Overclocking

    As a leading manufacturer in motherboard industry, AOpen always listens to what customers want and develop products to fit different user's requirements. Reliability, compatibility, leading technology and friendly features are our basic goals when designing motherboards. Other than above mentioned design criteria, there are power users who are always seeking to push the limitation of the system performance by overclocking which we call them "Overclocker".
  • Page 77 VGA and HDD is key components for overclocking, for your reference, the following list are what have been successful overclocked in our lab. Please note that AOpen can not guaranty they can be successful overclocked again. Please check the Available Vendor List (AVL) by link to our official website.

  • Page 78: Glossary

    AGP uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data transfer rate is 66MHz x 4byte x 2 = 528MB/s. AGP is now moving to 4X mode, 66MHz x 4byte x 4 = 1056MB/s. AOpen is the...

  • Page 79: Amr (Audio/Modem Riser)

    Unlike ACPI, BIOS controls most APM power management functions. AOpen Suspend to Hard Drive is a good example of APM power management. ATA is the specification of diskette interface. In 80’s, many software and hardware manufacturers instituted the ATA specification together.

  • Page 80: Ata/100

    ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as ATA/66 but clock cycle time is reduced to 40ns. The data transfer rate is (1/40ns) x 2 bytes x 2 = 100MB/s. To use ATA/100, you need special 80-wire IDE cable, the same as ATA/66.

  • Page 81: Codec (Coding And Decoding)

    Normally, CODEC means a circuit that can do digital to analog conversion and also the analog to digital conversion. It is part of AC97 sound/modem solution. DDR SDRAM utilizes the existing DRAM infrastructure and technology while doubling the nominal bandwidth available to systems in an easy to design and simple to adopt way.

  • Page 82: Edo (Extended Data Output) Memory

    The ECC mode needs 8 ECC bits for 64-bit data. Each time memory is accessed; ECC bits are updated and checked by a special algorithm. The ECC algorithm has the ability to detect double-bit error and automatically correct single-bit error while parity mode can only detect single-bit error.

  • Page 83: Ev6 Bus

    Flash ROM can be re-programmed by electronic signals. It is easier for BIOS to upgrade by a flash utility, but it is also easier to be infected by virus. Because of increase of new functions, BIOS size is increased from 64KB to 256KB (2M bit). AOpen AX5T is the first board to implement 256KB (2Mbit) Flash ROM.

  • Page 84: Fsb (Front Side Bus) Clock

    FSB Clock means CPU external bus clock. CPU internal clock = CPU FSB Clock x CPU Clock Ratio See SMBus. IEEE 1394 is a low-cost digital interface originated by Apple Computer as a desktop LAN and developed by the IEEE 1394 working group.

  • Page 85: Parity Bit

    The parity mode uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated, parity bit will be adjusted to have even count "1" for each byte. When next time, if memory is read with odd number of "1", the parity error is occurred and this is called single bit error detection.

  • Page 86: Pci (Peripheral Component Interface) Bus

    Bus for the internal connection of peripheral devices, high-speed data channel between the computer and expansion card. A file format for electronic document, PDF format is independent from platform, you can read PDF file under Windows, Unix, Linux, Mac … with different PDF reader. You can also read PDF file by web browser such as IE and Netscape, note that you need to install PDF plug-in first (Included in Acrobat Reader).

  • Page 87: Rdram (Rambus Dram)

    SDRAM comes in 64-bit 168-pin DIMM and operates at 3.3V. AOpen is the first company to support dual-SDRAM DIMMs onboard (AP5V), from Q1 1996 A memory space in Flash-ROM to simulate E PROM operation, AOpen motherboard uses Shadow E...

  • Page 88: Prom

    SIMM socket is only 72-pin, and is only single side. The golden finger signals on each side of PCB are identical. That is why it was called Single In Line. SIMM is made by FPM or DRAM and supports 32-bit data. SIMM had been phased out on current motherboard design.

  • Page 89: Ultra Dma

    Ultra DMA (or, more accurately, Ultra DMA/33) is a protocol for transferring data between a hard disk drive through the computer’s data path (or bus) to the computer’s random access memory (RAM). The Ultra DMA/33 protocol transfers data in burst mode at a rate of 33.3MB/s, twice as fast as the previous Direct Access Memory (DMA) interface.
  • Page 90 NEC’s Virtual Channel Memory (VCM) is a new DRAM core architecture that dramatically improves the memory system’s ability to service multimedia requirements. VCM increases memory bus efficiency and performance of any DRAM technology by providing a set of fast static registers between the memory core and I/O pins. Using VCM technology results in reduced data access latency and reduced power consumption.

  • Page 91: Troubleshooting

    If you encounter any trouble to boot you system, follow the procedures accordingly to resolve the problem. Start Turn off the power and unplug the AC power cable, then remove all of the add-on cards and cables, including VGA, IDE, FDD, COM1, COM2 and printer.
  • Page 92 Continue Install the VGA card. Then connect your monitor and keyboard. Turn on the power and check if the power supply and CPU fan work properly. The problem is probably caused by power supply or motherboard failure. Next Please contact your reseller or local distributor for repairing.
  • Page 93 Continue Perhaps your VGA card Check if there is display? or monitor is defective. Press <Ctrl> and <Alt> key at the same time, hold them and then press <Del> to reboot the system. It is very possible that your Check if the system keyboard is defective.
  • Page 94 Continue During system rebooting, press <Del> to enter BIOS setup. Choose “Load Setup Default”. Turn off the system and re-connect IDE cable. The problem should be Check if the system can caused reboot successfully? cable or HDD itself. Re-install the operating system such as Windows 98.

  • Page 95: Technical Support

    Dear Customer, Thanks for choosing AOpen products. To provide the best and fastest service to our customer is our first priority. However, we receive numerous emails and phone-calls worldwide everyday, it is very hard for us to serve everyone on time. We recommend you follow the procedures below and seek help before contact us.
  • Page 96 5 5 5 5 News Group: Your problem probably had been answered by our support engineer or professional users on the news group. http://www.aopen.com.tw/tech/newsgrp/default.htm 6 6 6 6 6 6 6 6 Contact Distributors/Resellers: We sell our products through resellers and integrators. They should know your system configuration very well and should be able to solve your problem more efficiently than us.
  • Page 97 Model name and BIOS version can be found on upper left corner of first boot screen (POST screen). For example: AX34-U R1.20 Nov.01.2000 AOpen Inc. Award Plug and Play BIOS Extension v1.0A Copyright © 1998, Award Software, Inc. AX34-U is model name of motherboard, R1.20 is BIOS version.

  • Page 98: Product Registration

    Be able to join the discussions of web-based news groups. AOpen makes sure that the information you provide is encrypted, so that it cannot be read or intercepted by other people or companies. Further, AOpen will not disclose any of information you submitted under any conditions. Please consult our...
  • Page 99 Please do not hesitate contact us if you have any problem about our products. Any opinion will be appreciated. Pacific Rim Europe America AOpen America Inc. AOpen Inc. AOpen Computer b.v. Tel: 886-2-2696-1333 Tel: 31-73-645-9516 Tel: 1-510-498-8928 Fax: 1-408-922-2935, 1-408-432-0496...

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