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No warranty or representation, either expressed or implied, is made with respect to the quality, accuracy or fitness for any particular part of this document. In no event shall the manufacturer be liable for direct, indirect, special, incidental or consequential damages arising from any defect or error in this manual or product.
Table of Contents Chapter 1 Introduction of IT5A Features Specifications................1-2 Layout diagram................1-4 System block diagram ..............1-5 Chapter 2 Installing the Mainboard ¬ Installing the Mainboard to the Casing ........2-3 Standard External Connectors............2-4 ® Jumpers and Switches ..............2-9 ¯ Presentation and Installation of the CPU ........2-10 °...
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Appendix A Quick Installation Appendix B Intel Pentium CPUs Appendix C AMD-K5.K6 CPUs Appendix D Cyrix / IBM 6x86 CPUs Appendix E General Discussion about HDD Installation Appendix F Flash BIOS User Instructions Appendix G Installation of AGP driver Appendix H Installation of IDE Bus Master Driver Appendix I Technical Support...
CPUs with MMX (P55C), as well as all AMD-K5/K6/K6 3D and Cyrix 6x86MX CPUs. It also takes into account, other future CPUs. The IT5A uses ALi Aladdin V ( M1541 / M1543 ) chipsets, and has 512K Level-2 Pipeline Burst SRAM on board. This mainboard is designed for use at 100 MHz Front Side Bus speeds.
Chapter 1 IT5A Specifications 1. Supports ATX power supply 2. Adjustment for Frequency and Voltage: Uses a DIP switch or jumper wires to adjust the frequency and voltage on the mainboard 3. Uses ZIF CPU Socket 7 for easy CPU installation...
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Introduction of IT5A Features 1- 3 7. System BIOS AWARD BIOS Supports Plug-and-Play (PnP) Supports Advanced Configuration Power Interface (ACPI) Supports Desktop Management Interface (DMI) 8. Multi I/O features Two Universal Serial Bus (USB) ports Two fast IDE channels (PIO mode 0~4, Ultra “DMA/33” and Bus Master) One standard EPP/ECP parallel port and two 16550 serial ports Two floppy disk drive connectors (FDD) (360K, 720K, 1.2M, 1.44M and 2.88M)
2- 1 Chapter 2 Installing the Mainboard This IT5A mainboard not only can be used with all standard equipment for traditional personal computers, but also provides great flexibility for meeting future upgrade demands. This chapter will introduce step by step all the standard equipment and will also present, as completely as possible future upgrade capabilities.
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Chapter 2 & User friendly instructions Our objective is to enable the novice computer user to perform the installation by themselves. We have attempted to write this document in a very clear, concise and descriptive manner to help overcome any obstacles you may face during installation.
Installing the Mainboard 2- 3 ¬ Installing the Mainboard to the Casing Most computer cases will have a base on which there will be many mounting holes that allows the mainboard to be securely attached and at the same time, prevents short circuits.
Chapter 2 - Standard External Connectors Inside the case of any computer several cables and plugs have to be connected. These cables and plugs are usually connected one-by-one to connectors located on the mainboard. You need to carefully pay attention to any connection orientation the cables may have and, if any, notice the position of the first pin of the connector.
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Installing the Mainboard 2- 5 The “keylock switch” is used to lock the computer’s keyboard. This disables the keyboard so that unauthorized persons cannot use it. When this function is in use, you will need to use the unlock key to activate the keyboard.
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Chapter 2 PN1 - Hardware Reset connectors There is no specific orientation. Connect the two-thread hardware reset cable to the PN1 connector pins on the mainboard. Pin number Name or significance of signal Hardware reset signal Ground PN1 - Sleep LED connector This connector has a specific orientation.
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Installing the Mainboard 2- 7 ATXPWR - ATX Power input Connectors These have a specific orientation. The three warning marks indicate that if you make a mistake in pin number or connection orientation, you could destroy your equipment. During installation, you just need to connect to the correct pins and in the correct orientation, and to connect the power supply unit to the connector on the mainboard.
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Chapter 2 MOUSE - PS/2 Mouse Connector Attach a PS/2 mouse to this 6-pin Din-connector. Pin number Name or significance of signal Mouse data No connection Ground +5VDC Mouse clock No connection KB - PS/2 Keyboard Connector Attach a keyboard to this 6-pin Din-connector. Pin number Name or significance of signal Keyboard data...
Installing the Mainboard 2- 9 ® Jumpers and Switches CCMOS : Delete the contents of the CMOS ( 5 VSB POWER OFF ) This jumper is set on pins 1 and 2 at the factory in order for the computer to function normally, so please do not change this setting. The main feature of this jumper is to solve situations where the computer crashes due to improper usage.
The IT5A mainboard does not only support all the CPUs listed in the specifications, but also has reserved several circuits in order to be able to support future processors.
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Voltage and Frequency Setup IT5A uses DIP switches to setup the CPU Frequency and voltage. Please make sure which kind of CPU and its frequency and voltage before you setup. There are two DIP switches on the mainboard, one is use to setup the CPU frequency (including external clock and rating parameter) which is called SW2, another one is SW1 which is used to setup the CPU voltage.
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2-12 Chapter 2 IT5A CPU frequency setting (SW2) The following tables will present the adjustment for the 586 CPU series. Please setup the correct adjustment regarding the CPU type and brand. Clock Chip:PLL52C66-08 External Clock 60MHz 60MHz 30MHz 66.6MHz 66.6MHz 33.3MHz ON...
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Installing the Mainboard 2- 13 IDT WinChip C6 CPU IDT- External Internal External Clock Reserve External Clock WinChip Clock Clock Factor Frequency DS1 DS2 DS3 DS4 DS5 DS6 DS7 C6-200 66MHz 200MHz OFF ON OFF OFF OFF ON Cyrix/IBM 6x86MX CPU Cyrix/IBM External Internal External Clock...
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2-14 Chapter 2 SW2 CPU Vcore settings Nominal Pin Name S1 Output Voltage DACOUT...
° Installing System Memory¡i DRAM Memory¡j When this mainboard was designed, we not only took into account present needs, but we also tried to address demands for future upgrades, IT5A support two168 pin DIMM sockets: Before you proceed with installation, be patient, first read what follows: 1.
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Installing the Mainboard 2- 17 ¡i 168-pin DIMM modules specifications¡j According to the standards defined by JEDEC, there are a lot of different types of specifications for 168-pin DIMM sockets. Here are the possible types: 3.3V UNBUFFERED DIMM 3.3V BUFFERED DIMM 5V UNBUFFERED DIMM 5V BUFFERED DIMM These types of DIMM modules differ not only by the electrical...
Introduction to BIOS Chapter 3 Introduction to BIOS Don’t change the parameters inside the BIOS unless you know what you are doing The parameters inside the BIOS are used to setup the hardware synchronization or the device operating mode. If the parameters are not correct, they will produce errors, the computer will crash, and sometimes you will even not be able to boot the computer after it has crashed.
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Chapter 3 Three to five seconds after the message is displayed, if you press the Del key, or if you press the Ctrl-Alt-Esc keys simultaneously, you will access the BIOS Setup menu. At that moment, the BIOS will display the following message: Fig 3-1 BIOS Setup main menu...
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Introduction to BIOS CMOS DATA Maybe you have heard somebody saying that their CMOS DATA was lost. What is the CMOS? Is it important? The CMOS is the memory used to store the BIOS parameters that you have configured. This memory is passive. You can read its data and you can also store data in it.
Chapter 3 ¬ Standard CMOS Setup Menu These are the basic configuration parameters of the BIOS. These parameters include the date, hour, VGA card, FDD and HDD settings. Fig 3-2 Standard CMOS Setup Menu ¡i NORMAL, LBA, Set up of HDD operating mode LARGE¡j Since old operating systems were only able to support HDDs with a capacity less than 528MB, any hard disk with more than 528MB was unusable.
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Introduction to BIOS ä LBA (Logical Block Addressing) mode: LBA mode supports hard disk drives up to 8.4Giga. This mode uses a different method to calculate the position of disk data to be accessed. It translates Cylinders (CYLS), Heads and Sectors into a logical address where data is located.
Chapter 3 - BIOS Features Setup Menu BIOS Features Setup Menu has already been set for maximum operation. If you do not really understand the options in this menu, we recommend you use default values. In each item, you can press <F1> at any time to display all the options for this item.
Introduction to BIOS CPU External Cache: This item is used to enable or to disable the CPU external cache. When the external cache is enabled, the system works faster. The default is Enable. Quick power on self test: After the computer has been turned on, the BIOS of the mainboard will run a series of tests in order to check the system and its peripherals.
Chapter 3 Boot Up Floppy Seek: When the computer boots up, the BIOS detects if the system has a FDD or not. When this item is enabled, if the BIOS does not detect a floppy drive, it will display a floppy disk drive error message. If this item is disabled, the BIOS will skip this test.
Introduction to BIOS Security Option: This option can be set to System or to Setup. After you have created a password through PASSWORD SETTING, this option will deny access to your system (System) or modification of the computer setup (BIOS Setup) by unauthorized users. ä...
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3-10 Chapter 3 Shadowing address ranges (C8000-CBFFF Shadow): This option allows you to decide if the memory block (BIOS) of an interface card at the address C8000-CBFFF uses the shadow feature or not. If you do not have an interface card using this memory block, don’t enable this option.
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Introduction to BIOS 3-11 SHADOW What is a SHADOW? The BIOS of standard video or interface cards is stored in ROM, and it is often very slow. With the Shadow feature, the CPU reads the BIOS on the VGA card and copies it into RAM.
3-12 Chapter 3 ® Chipset Features Setup Menu The Chipset Features Setup Menu is used to modify the contents of the buffers in the chipset on the mainboard. Since the parameters of the buffers are closely related to hardware, if the setup is incorrect, the mainboard will become unstable or you will not be able to boot up.
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Introduction to BIOS 3-13 Attention:Unless you are very familiar with your computer and with the DRAM configuration and speed, we recommend you do not change the DRAM options but enable this option. There are small differences in the chipset feature setup according to different mainboard models, but this has no influence on performance.
3-14 Chapter 3 „ Power Management Setup Menu The difference between Green PCs and traditional computers is that Green PCs have a power management feature. With this feature, when the computer is powered on but inactive, the power consumption is reduced in order to save energy.
Introduction to BIOS 3-15 2. Use arrow keys to go to the item you want to configure. To change the settings, use "PgUP", "PgDn", "+" and "-". 3. After you have configured the Power Management feature, press “Esc” to go back to the Main Menu.
3-16 Chapter 3 ä Suspend or Suspend ( Susp,Stby -- > Off ) The video will only be switched off in Standby or Suspend mode. ä Suspend ( Suspend -- > Off ) The video will only be switched off in Suspend mode. Video Off Method: Three video off methods are available: "Blank", "V/H SYNC + Blank"...
Introduction to BIOS 3-17 Suspend Mode: When the setting selected for "Power Management" is "User Define", you can define for this mode any delay from 1 minute to 1 hour. If no power management event occurs during this time period, meaning the computer is inactive during this period, the system will enter the Suspend power saving mode.
3-18 Chapter 3 … PCI & Onboard I/O Setup In this menu, you can change the INT# and IRQ of the PCI bus and the onboard I/O device, I/O port address and other hardware settings. Fig 3-6 PCI & Onboard I/O Setup PnP OS Install : Device resource assigned by PnP OS or BIOS.
Introduction to BIOS 3-19 PCI IDE Card 2nd Channel: This option can be enabled or disabled. BIOS default is Enable. Since this channel uses IRQ15, if you want to use this channel, you have to enable this option to make the BIOS assign IRQ15 to this channel. PCI IDE Card IRQ Map to: Three options are available for this item: PCI Auto, PCI-slotX and ISA.
3-20 Chapter 3 On board Serial Port 2: This is used to specify the I/O address and IRQ of Serial Port 2. Ten options are available: Disable, 3F8h/IRQ4, 2F8h/IRQ3, 3E8h/IRQ4 or 2E8h/IRQ3. 3F8/IRQ10, 2F8/IRQ11, 3E8/IRQ10, 2E8/IRQ11, and AUTO. On board Parallel Port: Set the I/O address and IRQ of the onboard parallel port.
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Introduction to BIOS 3-21 On board IDE-1 Controller: Onboard PCI IDE 1 controller can be set as Enable or Disable. / Master drive PIO Mode: ä Auto: the BIOS can auto-detect the PIO mode of the HDD in order to set its data transfer rate.
3-22 Chapter 3 ± Load BIOS Defaults BIOS defaults are the reference settings that allow your system to work at a comparatively low performance. When you choose the option, the following message is displayed: “Load BIOS Defaults (Y/N)? N” If you want to use BIOS default values, press “Y”, than <Enter>. ²...
Introduction to BIOS 3-23 ³ Password Setting This option allows you to set a password required to start the system (System) or to access to the BIOS (Setup). After you have set a password through the PASSWORD SETTING option, you can enter the Security Option in the “BIOS Features Setup Menu” to select the security level in order to prevent any unauthorized access.
3-24 Chapter 3 ´ IDE HDD Auto Detection In old systems, after you had installed the hard disk, you had to know the hard disk specifications, such as the number of cylinders, heads and sectors, and enter the relevant information on to the hard disk information section. If the CMOS data was erased, and you had forgotten the hard disk specifications, problems ensued.
Quick Installation Appendix A Quick Installation Appendix A will give you a simplified installation procedure, in order to allow you to install your mainboard quickly and correctly. If you need further information or if you need to change some other settings, begin reading from Chapter 1.
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Appendix A Installing CD-ROM Drive: IDE2- Connect one end of the 40-pin cable that comes with the drive to the CD-ROM connector, and the other end to the IDE2 pin connector on the mainboard. Note: Be sure that the red line on the cable connects to the first pin of the connectors.
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Quick Installation Installing Power ON/OFF switch connector: PN1 - There is a specific orientation for pin 10 and pin 11. Connect the two- threads suspend switch connector of the computer case to correct pins of connector on the mainboard. You can ignore this connector since most of computer cases do not support this feature (the mainboard itself supports it).
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Appendix A Watch the pin position and Installing ATX Power input connector: the orientation ATXPWR - Connect the power supply unit to the correct connectors on the mainboard. Pin number Name of the signal or Pin number Name of the signal or signification signification +3.3VDC...
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Name of the signal or signification Control on / off +12V Sensor signal For the IT5A, if the CPU Fan power has only two threads, connect them to PIN2 and PIN3 Some jumpers are reserved for future Adjusting other jumpers: functions or are not to be adjusted in normal operation.
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AMD-K5 . K6 CPUs Appendix C AMD-K5 / K6 CPUs Recognizing AMD CPU speed, voltage and package: AMD-K5-PR100 A B Q xx Reserved 66MHz Case Temperature Internal Q= 60¢J Clock R= 70¢J 100MHz W=55¢J 166MHz X= 65¢J Y= 75¢J Z= 85¢J Processor name Operating Voltage B= 3.45V-3.60V...
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Cyrix 6x86 CPUs Appendix D Cyrix/IBM 6x86 CPUs Recognizing Cyrix CPU speed and voltage: Name of the P-Rating processor 166+~ 266+ 6x86MX 6x86MX-PR166 CPU Core Frequency 133 MHz 133, 166 2.9V Center of Core Voltage 2.7V 2.8V 2.9V...
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General Discussion about HDD Installation Appendix E General Discussion About HDD Installation Most recent HDDs use IDE interface. Installing an IDE hard disk does not require a lot of knowledge like installing the driver for a SCSI hard disk, but this means that the user must install the hard disk by themselves and cope with all the problems they may encounter.
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Appendix E The higher the MODE value is, the better the hard disk data transfer rate. But this does not mean that you can select the highest mode value as you like. You must be sure that your hard disk supports that type of fast data transfer, otherwise your hard disk will not be able to operate correctly.
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General Discussion about HDD Installation Installing a hard disk: In the Standard CMOS Setup Menu, Primary means the first connector on the mainboard, that is, connector IDE1 on our mainboard. Secondary means the second connector on the mainboard, that is, connector IDE2 on our mainboard.
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Appendix E Installing two HDDs: The red line on the connection cable must be lined up with pin 1 on the connector. Method 1: Set the hard disk drive used for boot up at Master, and the other drive at Slave. Connect one of the connectors of the 40-pin cable to the first drive, another connector to the second drive, and the other end of the cable to connector IDE1 on the mainboard.
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General Discussion about HDD Installation Installing three HDDs: The red line on the connection cable must be lined up with pin 1 on the connector. Method 1: Set the hard disk drive used for boot up at Master, set the second drive at Slave.
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Appendix E BIOS Setup: If all your HDDs are new, you can use the IDE HDD Auto Detection option in the CMOS to auto detect the parameters of all your drives. You don’t need to set any hard disk parameter. If one or several of your HDDs are old, and if you don’t know their parameters, and you want to reconfigure your drives, you can also use the IDE HDD Auto Detection option in the CMOS to auto detect the...
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General Discussion about HDD Installation After you have partitioned the hard disk with FDISK, the system will reboot automatically. Boot from a system floppy disk, and type FORMAT C:/S Using FORMAT: (DOS command) This command is found in the DOS disks. FORMAT is used to format the hard disk.
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AWDFLASH NEWBIOS /Pn SAVEBIOS Notes: “NEWBIOS” indicates file name for the new BIOS which can be downloaded from our website at http://www.abit.com.tw (user can choose a different file name in place of NEWBIOS). “SAVEBIOS” indicates the filename of the old system BIOS (user...
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Startup system files (COMMAND.COM, MSDOS.SYS, IO.SYS...) b. AWDFLSH.EXE c. The NEWBIOS file which can be downloaded from ABIT’s website. d. AUTOEXEC.BAT, which has the following content: A:\AWDFLASH NEWBIOS /Py /Sn /CC .
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Installation of AGP driver Appendix G Installation of AGP driver The ALi AGP driver can be found on the CD-ROM .That comes with your motherboard . In the CD-ROM directory fine the “ALi AGP driver”, and execute the “SETUP.EXE” (See the Fig-1) Fig-1 Fig-2...
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Appendix G 3. After executing the “setup” you will see the “ALi M1541 AGP driver setup” as in Fig-2, Please click “next” to go on. Fig-3 All the files will be automatically installed. After you have completed the installation, please restart your computer as shown on theFig-3...
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Installation of IDE Bus Master Driver Appendix H Installation of IDE Bus Master Driver 1. Please locate the Ali_IDE file on the CD-ROM in order to install IDE bus master driver. (As Fig-1 ) Fig-1 2. Open the Win95 (Of course make another choice if you are using a different operating system) and click the “install”...
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Appendix H Fig-3 Then click “yes” to setup IDE driver (shown as Fig-3) Installation will be completed automatically once you see the following message on your screen (as Fig-4) * NOTE : This version support the Ultra DMA-33 feature. Fig-4...
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Technical Support Appendix I Technical Support L When you have a problem during operation... In order to help our technical support personnel to quickly find out what is the problem of your mainboard and to give you the answers you need, before filling in the technical support form, eliminate any peripheral that is not related to the problem, and indicate on the form the key peripherals.
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Appendix I Example 2: With a system including the mainboard (with CPU, DRAM, COAST...) HDD, CD-ROM, FDD, VGA CARD, LAN CARD, MPEG CARD, SCSI CARD, SOUND CARD, after assembly and after having installed the Sound Card Driver, when you restart the system, when it runs the Sound Card Driver, it resets automatically.
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Technical Support $$ Main instructions... To fill in this “Technical Support Form”, refer to the step-by-step instructions given below: *1. MODEL: Note the model number given in your user’s manual. Example: PT5R2, PR5R2... *2. Mainboard model number (REV): Note the mainboard model number labeled on the mainboard as “REV:*.**”.
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Appendix I 4. DRIVER REV: Note the driver version number indicated on the DEVICE DRIVER disk as “Release *.**”. < Example: IDE Device Driver Drivers Diskette Release 1.09A Release 1.09A *5. OS/APPLICATION: Indicate what are the operating system and the applications your are running on the system. Example: MS-DOS 6.22, Windows 3.1.
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Technical Support System Memory (DRAM): Indicate the brand and specifications (SIMM/DIMM) of your system memory. Examples: In the Brand space, write “Panasonic”, in the Specifications space, write “SIMM-FP DRAM 4MB-06”. Or, in the Brand, write “NPNX”, in the Specifications space, write “SIMM-EDO DRAM 8MB-06”.
Technical Support & Technical Support Form ( Phone #: Company name: J Contact: /Fax #: Model BIOS ID # Mainboard model no. DRIVER REV OS/Application Hardware name Brand Specifications C.P.U IDE1 IDE2 CD-ROM Drive IDE1 IDE2 System Memory (DRAM) COAST ADD-ON CARD Problem Description:...