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Perface Using This Manual This manual is designed to help you build a reliable Personal Computer based on the A7F156 platform. Chapter 1—Quick Reference This chapter is for advanced users who want to quickly assemble a system. The mainboard layout along with jumper and switch settings, and memory configuration are provided.
1. A7F156 Quick Reference This section is for users to get started using the mainboard straight away. 1.1. Mainboard Layout CPU SOCKET462 IR connector (IR) ATX power connector (PW2) Auxiliary -In connectors (AUX1) 184-pin DIMM DDR module sockets (DIMM1~3) CD-In connectors (CD1)
Mainboard User’s Manual 1.2. I/O Ports 1.3. Front Panel Connector (JP1) The following illustration shows the front panel connector pin assignments: I/O Port...
Mainboard User’s Manual 1.7. Connectors CPU FAN : This 3-pin header is used for connecting CPU FAN a CPU fan. System FAN : This 3-pin header is for connecting System FAN the case fan that keeps the system cool. Front USB connector : This 10-pin header is used USB2~3 connecting front panel USB port 3 or 4 or 5 or 6.
A7F156 Quick Reference 2. Introduction 2.1. Overview The high quality A7F156 is a high performance, enhanced function mainboard that supports Socket-A(Socket-462) processors that support a 333 MHz front side bus (FSB). This mainboard is designed around the latest and fastest VIA KT400 chipset in a standard ATX form factor.
Mainboard User’s Manual 2.2. Mainboard Specifications and Features 2.2.1. Hardware AMD Socket 462 processors package, compatible Auto-detection CPU Onboard Voltage Regulator Module Provides 1.05V to 1.825V operating voltage Coprocessor CPU has built-in floating point unit Speed 333/266/200 MHz FSB Athlon XP Socket-A system PCI bus clock 33 MHz Chipset...
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Introduction Complete software driver support Sound Chip 1 stereo DirectSound channel w ith source / volume control / mixer AC97 2.2 compliant Enhanced I/O One floppy disk controller One Standard/EPP/ECP parallel port connector Two 16550 compatible serial port connectors Two USB (Universal Serial Bus) ports One audio port connector, include line-out, line-in, mic-in, and midi/game ports I/O Options...
Mainboard User’s Manual 2.2.2. Software BIOS AWARD AGP/PCI BIOS 2M-bit Flash BIOS with ESCD (Extended System Configuration Data) block Supports APM, Plug and Play, Multi-Boot, DMI and EIDE devices Supports ACPI Supports high-capacity LS-120 and ZIP removable media drive Driver and IDE Bus mastering Ultra DMA driver Utility AC97 codec audio driver...
Introduction 2.3. Mainboard Layout Note: Because of optional items and design changes, your mainboard may not be identical to the one shown in the illustration. Mainboard Layout...
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Mainboard User’s Manual Key to Mainboard Components Name Function Socket 462 CPU socket ATX standard power connector DIMM1~3 DDR SDRAM Memory module slots IDE1 IDE 1 connector (blue) IDE2 IDE 2 connector (blue) IDE3 IDE 3 connector (red) [Optional] IDE4 IDE 4 connector (red) [Optional] FDD1 Floppy drive connector...
Introduction 2.4. Microprocessor The mainboard is designed to operate with the following processor: Processor Type Speed XP1500+~XP2700+ 200 / 266 / 333 MHz An onboard switching voltage regulator provides the required 1.05 to 1.825 volts for the processor. The processor sends five VID (Voltage identification) signals to the switching voltage regulator.
Mainboard User’s Manual 2.6. Chipset The A7F156 supports the VIA KT400 chipset. The KT400 chipset is optimized for the Pentium 4 processor. In addition to future application support, the KT400 chipset was designed with the following features: Advanced packaging technology and industry leading electrical design innovations ensure long-term system reliability over wide operating conditions.
One display monitor One mouse One PS/2 keyboard One set of loudspeakers 3.1. Unpacking The A7F156 mainboard package contains the following items: One mainboard One IDE 66/100 40-pin ribbon cable One floppy 34-pin ribbon cable Driver and utility CD User’s manual After removing the mainboard from its anti-static bag, place it on a grounded or antistatic surface (component side up).
Mainboard User’s Manual 3.2. Installation The A7F156 is designed to fit into a standard ATX form factor chassis. The pattern of the mounting holes and the position of the back panel connectors meet the ATX system board specification. The chassis comes with various mounting fasteners, which are made of metal or plastic.
Mainboard User’s Manual 3.5. Attaching Connectors 3.5.1. Front Panel Connectors (JP1) There are seven connectors on the mainboard for speaker, switches, and indicator lights on the system’s front panel. PW SW This 2-pin connector connects to the case-mounted Power button. RESET This 2-pin connector connects to the case-mounted reset switch and is used to reboot the system.
Hardware Installation 3.5.2. Audio CD-In Connector (CD1) This connector enables you to connect a CD-ROM to the mainboard and receive stereo audio input. 3.5.3. Audio AUX-IN Connectors (AUX1) This connector enables you to connect a stereo audio input from CD-ROM, TV-tuner, or MPEG card. Attaching Connectors...
Mainboard User’s Manual 3.5.4. Infrared Connector (IR) This 5-pinheader connects to an optional wireless transmitting and receiving infrared module via a cable and a bracket. Configure BIOS to enable the IrDA port if you attach an infrared module to this connector.
Hardware Installation 3.5.6. Front USB Header (USB2~3) The mainborad provides two onboard 10-pin of dual USB port (port 3,port 4, port 5 and port 6) header. The header on the same signal with USB port 1 and port 2 on the back panel. 3.5.7.
Mainboard User’s Manual 3.5.8. IDE Connectors An IDE drive ribbon cable has two connectors to support two IDE drives. If a ribbon cable connects to two IDE drives at the same time, one of them has to be configured as Master and the other has to be configured as Slave by setting the drive select jumpers on the drive.
Hardware Installation 3.5.9. Back Panel Connectors The back panel provides external access to PS/2 style keyboard and mouse connectors, two serial ports, one parallel port, dual USB ports, and audio Line-out, Line-in, Mic-in, game/midi ports which are integrated on the mainboard. The figures below show the location of the back panel I/O connectors.
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Mainboard User’s Manual The USB ports provide a hardware interface for low-speed peripherals such as the keyboard, mouse, joystick, scanner, printer and telephony devices, and also support MPEG-1 and MPEG-2 digital video. The USB2.0 ports have a maximum bandwidth of 480 Mbits/sec (equivalent to 60 Mbytes/sec), and up to 127devices can be attached.
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Hardware Installation Audio Line-Out Port You can connect various audio devices to this audio jacks. Connect headphones or powered speakers to the line-colored lineout connector. Audio Line-In Port You can connect a tape player or another audio source to the light blue Line-in connector to record audio on your computer or to play audio through your computer’s sound chip and speakers.
Mainboard User’s Manual 3.5.10. Power Supply Connector (PW2) The ATX power supply has a single lead connector with a clip on one side of the plastic housing. There is only one way to plug the lead into to ATX power connector. Press the lead connector down until the clip snaps into place and secures the lead onto the connector.
Hardware Installation 3.5.11. CPU/System Fan Power Supplies There are three fan connectors on the mainboard for the cooling fans. The connectors support fans of 12VDC/500mAMP (six watt) or less. When the system goes into sleep state, fans should be shut down to eliminate audible noise and reduce power consumption.
Mainboard User’s Manual 3.5.12. PCI Connector (PCI1~PCI6) PCI connector is one of equipment interfaces that connects peripheral equipment and motherboard. Its transfer speed is faster than traditional ISA. PCI is the mainstream transfer interface for extra adopter. Attaching Connectors...
Hardware Installation 3.5.13. CPU Thermal Diode (D15) When CPU temperature is overhead the system will shutdown. Red LED of CPU thermal diode will light up. You should press “power button” over 4 seconds, then system can be booted up. Attaching Connectors...
Mainboard User’s Manual 3.6. Installing the CPU 3.6.1. Before You Begin Be sure that your processor kit includes the following items: One processor with the fan or heat sink attached One power cable (for CPU with cooling fan attached) Place the mainboard on a workbench (not in a chassis). Be sure that the mainboard is empty (that is, no DIMMs, cables, or cards are installed) and that the holes for the fan or heat sink support pegs are empty.
Hardware Installation Identify the pin-1 corner of the Socket 462. The pin-1 corner is on the same side as the locking lever, as shown in the illustration below. Identify the pin-1 corner of the processor (the pin-1 corner on the processor has a beveled edge). Align the pin-1 corners and drop the processor into the Socket462.
Mainboard User’s Manual 3.7. Installing System Memory Maximum system memory supported by the mainboard is 3GB. The mainboard has two DIMM Sockets. Memory can be installed using 184-pin DDR SDRAM DIMM memory modules. These are no jumper settings required for the memory size or type, which is automatically detected by the BIOS.
Hardware Installation 3.8. Setting Jumpers Refer to the following illustration and instructions to set the jumpers on your mainboard. 3.8.1. Clear CMOS Jumper (JBAT1) You may need to clear the CMOS if your system cannot boot up because you forgot your password, the CPU clock setup is incorrect, or the CMOS setting need to reset to default values after the system BIOS has been updated.
Mainboard User’s Manual Solution B If the CPU clock setup is incorrect, you may not be able to boot up . In this case, follow these instructions: Turn the system off, then on again. The CPU will automatically boot up using standard parameters. As the system boots, enter BIOS and set up the CPU clock.
4. BIOS Configuration After the hardware configuration of the mainboard is finished, and the system hardware has been assembled, the system may be powered up. At this point, CMOS setup should be run to ensure that system information is correct. The mainboard employs the latest Award BIOS CMOS chip with support for Windows Plug and Play.
Mainboard User’s Manual This program should be executed under the following conditions: u When changing the system configuration u When a configuration error is detected by the system and you are prompted to make changes to the Setup program u When resetting the system clock u When setting the CPU clock speed so that it automatically runs either fast or slow u When redefining the communication ports to prevent any con...
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BIOS Configuration “Press DEL to enter SETUP” To access the AWARD BIOS SETUP program, press the <DEL> key to display the “CMOS SETUP UTILITY” screen: These screens provide access to the utility’s various functions. Listed below are explanations of the keys displayed at the bottom of the screen: Function Escape key: Exits the current menu...
Mainboard User’s Manual 4.2. Standard CMOS Features Standard CMOS Features is the same for all three chipsets. Selecting “Standard CMOS Features” on the main program screen displays the following menu: The Standard CMOS Setup utility is similar for all three chipsets and is used to configure the following features: Date : Month, Day, Year Time : Hour, Minute, and Second.
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BIOS Configuration Drive A and Drive B : Select the type of floppy disk drive installed in your system. The options are: — 360K, 5.25 in — 1.2M, 5.25in — 720K, 3.5in — 1.44M, 3.5in — 2.88M, 3.5in — None” (Not Installed) The “Not Installed”...
Mainboard User’s Manual 4.3. Advanced BIOS Features Selecting “Advanced BIOS Features” on the main program screen displays this menu, which allows you to define advanced information about your system. You can make modifications to most of these items without introducing fatal errors to your system. Note that the page has a scroll-bar to scroll down to more items.
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BIOS Configuration Processor Number Feature : Some new processors are installed with a unique processor number. This number may be used for verification in Internet transactions and e-commerce. If you prefer not to use or distribute the unique processor number,set this item to Disabled to suppress the processor number.
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Mainboard User’s Manual Typematic Rate Setting : If set to “Enabled,” enables you to set the Typematic Rate and Typematic Delay. The default setting is “Disabled”. u Typematic Rate (Chars/Sec) : This setting controls the speed at which the system registers repeated keystrokes. The choices range from 6 to 30 Chars/Sec.
BIOS Configuration 4.4. Advanced Chipset Features Selecting “Advanced Chipset Features” on the main program screen displays this menu: This option displays a table of items that define critical timing parameters of the mainboard. You should leave the items on this page at their default values unless you are very familiar with the technical specification of your system hardware.
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Mainboard User’s Manual u DRAM Clock/Drive Control Scroll to this item and press <Enter> to view the following screen: Current FSB Frequency : This item display the front side bus (FSB) frequency. This is a display-only item. You cannot make changes to this field.
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BIOS Configuration DRAM CAS Latency : This item enables you to optimize the speed at which data is accessed in a column by defining CAS latency time. The CAS latency defines the time delay (in CLKs) before SDRAM starts a read command after receiving it.
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Mainboard User’s Manual Write Recovery Time : These registers are normally set at system initialization time and not accessed after during normal system operation. DRAM tWTR : DDR 400 tWIR timing control. The options are “1T” and “3T”. Press <Esc> to return to the Advanced Chipset Feature page. Advanced Chipset Features...
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BIOS Configuration u AGP & P2P Bridge Control Scroll to this item and press <Enter> to view the following screen: AGP Aperture Size : This item defines the size of the aperture if you use an AGP graphics adapter. The AGP aperture refers to a section of the PCI memory address range used for graphics memory.
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Mainboard User’s Manual AGP Master 1 WS Write : This implements a single delay when writing to the AGP Bus. By default, two-wait states are used by the system, providing greater stability. AGP Master 1 WS Read : This implements a single delay when writing to the AGP Bus.
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BIOS Configuration u CPU & PCI Bus Control Scroll to this item and press <Enter> to view the following screen: PCI1 Master 0 WS Write : When this item enabled, writing to the PCI bus is executed with zero wait state. The Choice: Enabled or Disabled.
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Mainboard User’s Manual VLink 8X Support : North bridge supports a high speed 8-bit 8X 66MHz Quad data transfer interconnect (V-Link) to the south bridge. PCI Delay Transaction : The mainboard’s chipset has an embedded 32-bit post write buffer to support delay transactions. Select Enabled to support compliance with PCI specification version 2.1.
BIOS Configuration 4.5. Integrated Peripherals Selecting “Integrated Peripherals” on the main program screen displays field. This option displays a list of item that defines the operation of peripheral components on the system’s input/output ports. USB 2.0 Support : You can select Enabled or Disabled USB2.0. Power Management Setup...
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Mainboard User’s Manual u VIA OnChip IDE Device Scroll to this item and press <Enter> to view the following screen : OnChip IDE Channel 0 : The chipset contains a PCI IDE interface with support to two IDE channels. Select Enabled to activate the primary IDE interface;...
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BIOS Configuration Primary/Secondary Master/Slave PIO : The four IDE PIO (Programmed Input/Output) fields let you set a PIO mode (0- 4) for each of the four IDE devices that the onboard IDE interface supports. Modes 0 through 4 provide successively increased performance.
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Mainboard User’s Manual u VIA OnChip PCI Device Scroll to this item and press <Enter> to view the following screen : VIA-3058 AC97 Audio : Auto and disabled the onboard audio chip. Disable this item if you are going to install a PCI audio add-on card. VIA-3043 OnChip LAN : This item allows you to control the onboard LAN.
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BIOS Configuration u Super IO Device Scroll to this item and press <Enter> to view the following screen : Onboard FDC Controller : This option enables the onboard floppy disk drive controller. Onboard Serial Port 1 : This option is used to assign the I/O address and address and interrupt request (IRQ) for onboard serial port 1 (COM1).
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Mainboard User’s Manual RxD , TxD Active : Define the voltage level for Infrared module RxD(receive) mode and TxD(transmit) mode. This setting has to match the requirements of the infrared module used in the system. The options are : — Hi, Lo (default) —...
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BIOS Configuration EPP Mode Select : Sets the EPP specification. There are two option “EPP1.7”(default) and “EPP1.9”. ECP Mode Use DMA : When the onboard parallel port is set to ECP mode, the parallel port can use DMA “3” or DMA “1”. Game Port Address : Enables you to specify the I/O address of the game port.
Mainboard User’s Manual 4.6. Power Management Setup This option lets you control system power management. The system has various power-saving modes including powering down the hard disk, turning off the video, suspending to RAM, and software power down that allows the system to be automatically resumed by certain events.
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BIOS Configuration ACPI Suspend Type : Use this item to define how your system suspends. If set to S1(POS) (default), the suspend mode is equivalent to a software power down. If set to S3(STR), the suspend mode is a suspend to RAM the system shuts down with the exception of a refresh current to the system memory.
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Mainboard User’s Manual Soft-Off by PWRBTN : When set to “Instant-Off” (default), pressing the power button will turn off the system power. When set to “Delay 4 Sec.” you have to press the power button and hold it for more than 4 seconds to turn off the system power. Otherwise, the system just goes into suspend mode.
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BIOS Configuration VGA : When set to “On,” the system power will resume the system from a power saving mode if there is any VGA activity. Default is “Off”. LPT & COM : When this item is enabled, the system will restart the power saving timeout counters when any activity is detected on the serial ports, or the parallel port.
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Mainboard User’s Manual u IRQs Activity Monitoring Scroll to this item and press <Enter> to view the following screen: Primary INTR Press Enter to on/off the wake up ability of a specified IRQ. The choice: OFF, or ON. In the following is a list of IRQ's, Interrupt ReQuests, which can be exempted much as the COM ports and LPT ports above can.
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BIOS Configuration IRQ12 ( PS / 2 Mouse ) IRQ13 (Coprocessor) IRQ14 (Hard Disk) IRQ15 (Reserved) The choice: Disabled or Enabled. Press <Esc> to return to the previous screen. Power Management Setup...
Mainboard User’s Manual 4.7. PnP/PCI Configuration This option displays a table of items that configures how PnP (Plug and Play) and PCI expansion cards operate in your in your system. Both the ISA and PCI buses on the Mainboard use system IRQs (Interrupt Requests) and DMAs (Direct Memory Access).
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BIOS Configuration Reset Configuration Data : The system BIOS supports the Plug and Play feature so the resources assigned to each peripheral have to be recorded to prevent them from conflicting. The location to store the assigned resources is called ESCD (Extended System Configuration Data) which is located in the system flash EEPROM.
Mainboard User’s Manual 4.8. PC Health Status On mainboards the support hardware monitoring, this item lets you monitor the parameters for critical voltages, critical temperatures and fan speeds: Selecting “PC Health Status” on the main program screen displays this menu: CPU Warning Temperature: Since the mainboard support CPU temperature monitoring and overhear alert.
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BIOS Configuration - 5 V VBAT(V) 5VSB(V) Shutdown Temperature : Enables you to set the maximum temperature the system can reach before powering down. After you have made your selections in the PC Health Status Setup, press <Esc> to go back to the main program screen. PC Health Status...
Mainboard User’s Manual 4.9. Frequency/Voltage Control This item enables you to set the clock speed ad system bus for your system. The clock speed ad system bus are determined by the kind of processor you have installed in your system. Auto Detect DIMM/PCI Clk : When this item is enabled, BIOS will disable the clock signal of free DIMM and PCI slots.
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BIOS Configuration 110/37 MHz 115/38 MHz 133/33 MHz 137/34 MHz 140/35 MHz 145/36 MHz 150/38 MHz CPU Ratio : Use this item to select a multiplier for the system front side bus (FSB) frequency. The value of the multiplier must be set so that: Multiplier x Front side Bus Frequency = CPU Clock Speed.
Mainboard User’s Manual 4.10. Load Fail-Safe Defaults Option This option opens a dialog box that lets you install fail-safe defaults for all appropriate items in the Setup Utility: Press <Y> and then <Enter> to install the defaults. Press <N> and then <Enter>...
BIOS Configuration Press <Enter> after entering the password. At the next prompt, confirm the new password by retyping it and pressing <Enter> again. To disable the password, press <Enter> instead of entering a new password when the “Enter Password” dialog box appears. A message appears confirming that the password has been disabled.
5. Driver and Utility 5.1 Flash Utility The BIOS of the A7F156 mainboard can be upgraded by using a Flash utility. A new version of the BIOS can be downloaded from the factory’s BBS and Web site. The system BIOS is stored in a 1 M-bit Flash EEPROM that can be erased and reprogrammed by the Flash utility.
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CD AutoRun screen should appear. If the AutoRun screen does not appear, double click or run D:\ Autorun.exe (assuming that your CD-ROM drive is drive D:) The A7F156 CD include 1. Install Mainboard Software (VIA) 2. Install Audio Device Software (AC97) Click the links to install the listed software, read the online manual, read a list of the mainboard’s features, or browse to the...
Mainboard User’s Manual This folder has 4 in 1drivers for Windows NT/ME/XP/2000/98/95. The Installation Steps: 1. Insert the manufacturer’s CD-ROM into your CD-ROM drive. 2. Click Driver Install. 3. Select the folder Driver\Via\4in1driver for WIN NT/ME/XP /2000/98/95 to start the installation: 4.
Driver and Utility 5.3. Online Services Flexus Computer Technology, under the Freetech brand name, has consistently won recognition for excellence in the design and manufacturing of high quality mainboards! Our products are globally recognized among the leading cost-performance mainboards in the industry today and we are a...
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