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Part No : MN-112-2A0-01 Rev: 1.00 Table of Contents Chapter 1 Introduction of IT5A Features l l l 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 ° Installing System Memory ¡i DRAM Memory¡j . . 2-17 Chapter 3 Introduction of BIOS ¬ Standard CMOS Setup Menu.....................................................3-4 - BIOS Features Setup Menu .......................................................3-6 ® Chipset Features Setup Menu...................................................3-12 ¯ Power Management Setup Menu .............................................3-14 ° PCI & Onboard I/O Setup .......................................................3-19 ± Load BIOS Defaults ................................................................3-24 ² Load Setup Defaults ................................................................3-24 ³ Password Setting .....................................................................3-25 ´ IDE HDD Auto Detection .......................................................3-26 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 Introduction of IT5A Features 1- 1 Chapter 1 Introduction of IT5A Features The IT5A has been especially designed for File server, Workstation and Professional users. It can support a wide range of processors, including Intel CPUs (P54C) and Intel 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. It also supports the latest AGP technology. Two 168-pin DIMM ( Dual In-Line Memory Module ) slots meet the requirements for all memory configurations required by high level computing. The 168-pin DIMM slots support EDO ( Extended Data Out ) DRAM and Synchronous DRAM ( SDRAM ) as a memory standard for next generation 64-bit systems. The IT5A also provides two Universal Serial Bus (USB) ports and meets the Concurrent PCI Rev. 2.1 standard. It supports IDE interface for Fast HDD (Mode 0~4) and Ultra DMA/33, as well as IDE Bus Master. These features also meet present and future interface standards and needs. System BIOS features include Plug-and-Play (PnP), Advanced Configuration Power Interface (ACPI), the newest Desktop Management Interface (DMI), as well as IT5A's unique CPU operating frequency and voltage setup feature in order to meet modern computing demands. 1-2 Chapter 1 IT5A nSpecifications 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 Supports switching power for a more stable environment for the CPU Supports Intel CPUs: 1) Pentium® 100, 133, 166, and 200MHz 2) Pentium® processor with MMXTM technology 166MHz to 233MHz Supports AMD CPUs: 1) AMD-K5* PR100, PR133, and PR166. 2) AMD-K6TM 166MHz to 233MHz . 3) AMD-K6 3DTM 266 to 300MHz Supports Cyrix/IBM CPUs: 1) Cyrix 6x86MXTM PR166 ~ PR266 Supports IDT WinChip C6 CPU : 200MHz. *Reserved circuitry supports future sixth generation CPUs 4. Chipset ALi Aladdin V ( M1541 . M1543 ) chipset Supports standard version PCI 2.1 Supports AGP 66/133 MHz ( Side band ) 3.3V devices 5. L2 Cache Memory 512K of cache memory (Pipeline Burst SRAM) 6. System DRAM Two 168-pin DIMM sockets: support EDO and Synchronous DRAM (SDRAM) DIMM sockets use PC modules (3.3V Unbuffered DRAM) Up to 256MB memory configuration possible 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) Supports PS/2 type mouse and keyboard 9. Other features Standard ATX architecture dimensions One AGP slot , three PCI bus slots and two ISA bus slots and Supports 3-MODE for a special Japanese floppy disk drive Supports two bootable hard disks--able to run two different operating systems Supports IDE ( ATAPI ) interface CD-ROM , ZIP and LS-120 type floppy disk drive (Boot only) Note: All brand names and trademarks are the property of their respective owners. 1-4 n Chapter 1 Layout diagram Fig 1-1 Layout diagram Introduction of IT5A Features n 1- 5 System block diagram Fig. 1-2 IT5A System block diagram 1-6 Chapter 1 Installing the Mainboard 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. This mainboard is able to support all Intel Pentium chips including P55C with MMX, Cyrix 6x86MX and AMD-K5/K6/K6-3D processors now on the market. (For details, see specifications in Chapter 1.) However, we cannot guarantee the description given in this manual of the circuitry of your mainboard will work for processors not listed in Chapter 1. For example, the operating voltage of Cyrix's next generation CPU is unknown at present. Thus we were not able to include these specifications in your motherboard. We will supply further information about CPU support when new CPUs arrive on the market. This chapter is organized according the following features: OE Installing the Mainboard to the Casing · Standard external connectors Z Jumpers and switches · Presentation and Installing of the CPU. º Installing the system memory. NNNN Before proceeding with the installation Before installing the mainboard please be sure to turn off or disconnect the power supply unit. Before making any modifications to the hardware configuration of the mainboard, the power supply to any areas of the mainboard you plan to modify should be turned off to avoid unnecessary damage to the hardware. 2-2 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. Please read our instructions carefully and follow them step-by-step. 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. There are two ways to attach the mainboard to the base. with spacers or with bolts In principle, the best way to attach the motherboard is with bolts, and only if you are unable to do this should you attach the board with spacers. Take a careful look at the mainboard and you will see many mounting holes on it. Line these holes up with the mounting holes on the base. If the holes line up, and there are screw holes this means you can attach the mainboard with bolts. If the holes line up and there are only slots, this means you can only attach the mainboard with spacers. Take the tip of the spacers and insert it into the slots. After doing this to all the slots, you can slide the mainboard into position aligned with the slots. After the mainboard has been positioned, check to make sure everything is OK before putting the casing back on. Note: If the mainboard has mounting holes, but don't line up with the holes on the base and their are no slots to attach the spacers, don't worry, you can still attach the spacers to the mounting holes. Just cut the spacers (along the dotted line) (the spacer may be a little hard so be careful of our hands). In this way you can still attach the mainboard to the base without worrying about short circuits. 2-4 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. In the explanation that follows, we will describe the significance of the first pin. Fig 2-1 External connectors layout PN2 - Keylock connector Please pay attention to pin position and orientation This connector has a specific orientation. Connect the five-thread keylock connector cable to the PN2 connector pins on the mainboard. Pin number 1 2 3 4 5 Name or significance of signal +5VDC No connection Ground Keyboard inhibit Signal Ground 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. PN1 - Power ON/OFF switch There is no specific orientation. Since most cases do not support this feature, most of you should ignore this instruction. Pin number 8 9 Name or significance of the signal Ground Power on/off signal PN2 - SMI Switch There is no specific orientation. Connect the two-thread cable to the PN1 connector pins on the mainboard. Since most cases do not support this feature, most of you should ignore this instruction. Furthermore, this feature is not necessary as it is already a part of the mainboard. Pin number 10 11 Name or significance of signal SMI signal GND PN2 - HDD LED connector This connector has a specific orientation. Connect the two-thread IDE LED connector cable attached to the case to the IDE LED connector on the mainboard. Pin number 6 7 Name or significance of signal LED's Cathode LED's Anode PN1 - Speaker connector There is no specific orientation. Connect the four-thread speaker cable to the PN1 connector pins on the mainboard. Pin number 4 5 6 7 Name or significance of signal +5VDC Ground Ground Sound Signal 2-6 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 1 2 Name or significance of signal Hardware reset signal Ground PN1 - Sleep LED connector This connector has a specific orientation. Connect the two-thread Sleep LED connector cable attached to the case to the Sleep LED connector on the mainboard. Pin number 9 10 Name or significance of signal LED's Cathode LED's Anode FAN1 - CPU Fan power connector This has a specific orientation. Connect the three-threads CPU fan cable to the FAN1 connector. Pin number 1 2 3 Name of the signal or signification Control on / off +12V Sensor Installing the Mainboard 2- 7 ATXPWR - ATX Power input Connectors These have a specific orientation. The three warning marks indicate tha ...