CUV266-D Onboard LED

ON Standby Power

OFF Powered Off

Motherboard Frequency Settings (DIP Switches) The motherboard frequency is adjusted through the DIP switches. The white block represents the switchs position. The illustration below shows all the switches in the OFF position.

OFF ON

1. Frequency Multiple 2. Frequency Multiple 3. Frequency Multiple 4. Frequency Multiple 5. Frequency Multiple

CUV266-D DIP Switches

1) JumperFree Mode (JEN) This jumper allows you to enable or disable the JumperFree mode. The JumperFree mode allows CPU external frequency settings to be made through the BIOS setup (see 4.4 Advanced Menu). Setting JEN Enable (JumperFree) [2-3] (default) Disable (Jumper) [1-2]

Jumper Mode

JumperFree Mode (Default)
CUV266-D JumperFree Mode Setting
NOTE: In JumperFree mode, set all DIP switches (DIP_F) to OFF.
3. H/W SETUP Motherboard Settings
2) CPU External Frequency Selection (DIP_F Switches 15) This option tells the clock generator what frequency to send to the CPU, DRAM, and the PCI bus. This allows the selection of the CPUs External frequency (or BUS Clock). The BUS Clock multiplied by the Frequency Multiple equals the CPUs Internal frequency (the advertised CPU speed). NOTE: To select the CPU external frequency using the DIP_F switches, the motherboard must be set to jumper mode. Make sure that the JEN jumper is set to pins 1-2 (jumper mode) before you set the DIP_F switches.
ON 4 ON 5 ON 4 ON 5 ON 4 ON 5 ON 4 ON 5
CPU 68.00MHz AGP 68.00MHz PCI 34.00MHz
103.00MHz 68.60MHz 34.30MHz

ON 4 ON 5

170.00MHz 136.00MHz 85.00MHz 68.00MHz 42.50MHz 34.00MHz

ON 4 ON 5 ON 4 ON 5

CUV266-D CPU External Frequency Selection
WARNING! Set the CPU frequency only to the recommended settings. Frequencies other than the recommended CPU bus frequencies are not guaranteed to be stable. Overclocking the processor is not recommended. It may result in a slower speed.
CPU 70.00MHz AGP 70.00MHz PCI 35.00MHz
105.00MHz 70.00MHz 35.00MHz
175.00MHz 140.00MHz 87.50MHz 70.00MHz 43.75MHz 35.00MHz
CPU 75.00MHz AGP 75.00MHz PCI 37.50MHz
110.00MHz 73.30MHz 36.60MHz
180.00MHz 145.00MHz 90.00MHz 72.50MHz 45.00MHz 36.25MHz
CPU 66.80MHz AGP 66.80MHz PCI 33.40MHz
100.90MHz 67.20MHz 33.60MHz
185.00MHz 133.90MHz 92.50MHz 66.90MHz 46.25MHz 33.40MHz
3) USB Device Wake-up (3-pin USB01_PWR/USB23_PWR/USB45_PWR) These jumpers allow you to enable or disable the USB wake-up feature on the motherboard. Set all the three jumpers to ENABLED if you wish to use the USB devices to wake up the computer. This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead. The default setting for all three jumpers is DISABLED. NOTES: 1. Before setting these jumpers to ENABLED, make sure that you have the appropriate power supply, otherwise the computer does not power up. 2. The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal working conditions or in sleep mode.

3. H/W SETUP System Memory
3.5.2 Memory Installation
WARNING! Make sure that you unplug the power supply when adding or removing memory modules or other system components. Failure to do so may cause severe damage to both the motherboard and the components. A 184-pin DDR SDRAM DIMM has a single notch near the center. The number of pins are different on either side of the notch so the module only fits in one direction. Insert a DDR DIMM into the DDR socket as shown.
CUV266-D 184-Pin DDR DIMM Sockets

104 Pins

80 Pins
3.6 Central Processing Unit (CPU)
The motherboard comes with dual Socket 370 for the Intel Pentium III Coppermine CPUs listed in 2.1.1 Specifications. The following illustration shows the CPU socket location on the motherboard and the correct CPU orientation.

CUV266-D Socket 370

Note in the illustration that CPUs have marks (usually a notch or a gold mark on one corner) to help you identify the proper orientation and enable you to correctly install a CPU. It is important that you match the marked corner of the CPU with the corresponding corner on the socket so as not to damage the CPU pins. The CPU picture above is for reference only. Usually, when you buy a CPU, the heatsink and fan are already attached to the CPU. If a heatsink and fan did not come with the package, make sure you obtain one before installing the CPU. WARNING! You must install the proper heatsink and fan to the CPU. Failure to do so will cause the CPU to overheat and may damage both the CPU and the motherboard. Install an auxillary fan, if necessary. CAUTION! Be careful not to scrape the motherboard when mounting/unmounting a clamp-style processor fan to avoid damaging the motherboard.
Proceed to the next section for the steps on how to properly install a CPU.

3. H/W SETUP CPU

Pentium III

Gold Arrow

3.6.1 CPU Installation
Follow these steps to install a CPU. 1. Locate the ZIF socket on the motherboard. 2. Unlock the socket by pressing the lever sideways then lifting it up to a 90-100 angle.
3. Position the CPU above the socket such that its notched or marked corner matches the socket corner near the end of the lever, while making sure that the CPU is parallel to the socket. 4. Carefully insert the CPU into the socket until it fits in place. CAUTION! The CPU fits only in one orientation. Do not force the CPU into the socket to prevent bending the pins and damaging the CPU. If the CPU does not fit completely, check its orientation or check for bent pins. 5. When the CPU is in place, press it firmly on the socket while you push down the socket lever to secure the CPU. The lever clicks on the socket indicating that it is locked. 6. Attach the heatsink and fan to the CPU, if they were not pre-installed by the vendor. Refer to the installation instructions that came with the heatsink and fan. NOTE: Do not forget to set the correct Bus Frequency and Multiple (frequency multiple setting is available only on unlocked processors) for the processor to avoid start-up problems. CAUTION! When installing two CPUs, make sure that the CPUs are identical. When using only one CPU, make sure to install a terminator on the second CPU socket. DO NOT install heatsink and fan on the terminator!

3. H/W SETUP CPU Installation

3.7 Expansion Cards

In the future, you may need to install expansion cards. The motherboard has five PCI expansion slots to support these cards. Follow the steps in the next section when installing expansion cards. WARNING! Unplug the system power cord when adding or removing expansion cards or other system components. Failure to do so may cause severe damage to both the motherboard and expansion cards.
3.7.1 Installing an Expansion Card
1. Read the documentation that comes with the expansion card and make any necessary hardware settings for the card before installing it. 2. Remove the system unit cover and the bracket plate on the slot you intend to use. Keep the screw for later use. 3. Align the card connectors with the slot and press firmly until the card fits in place. 4. Secure the card to the slot with the screw you removed earlier. 5. Replace the system cover. 6. Change the necessary BIOS settings, if any. (see section 4.4.3 PCI Configuration to change the settings.) 7. Install the necessary software drivers for the expansion card.
3. H/W SETUP Expansion Cards
3.7.2 Assigning IRQs for Expansion Cards
Some expansion cards need an IRQ to operate. Generally, an IRQ must be exclusively assigned to one use. In a standard design, there are 16 IRQs available but most of them are already in use, leaving 6 IRQs free for expansion cards. If your motherboard has PCI audio onboard, an additional IRQ will be used. If your motherboard also has MIDI enabled, another IRQ will be used, leaving 4 IRQs free. IMPORTANT: If using PCI cards on shared slots, make sure that the drivers support Share IRQ or that the cards do not need IRQ assignments. Conflicts arise between the two PCI groups that will make the system unstable or cards inoperable. The following table lists the default IRQ assignments for standard PC devices. Use this table when configuring your system and for resolving IRQ conflicts.
Standard Interrupt Assignments
IRQ 2 3* 4* 5* 6 7* 8 9* 10* 11* 12* 13 14* 15* Priority N/A 10 Standard Function System Timer Keyboard Controller Programmable Interrupt Communications Port (COM2) Communications Port (COM1) Sound Card (sometimes LPT2) Floppy Disk Controller Printer Port (LPT1) System CMOS/Real Time Clock ACPI Mode when used IRQ Holder for PCI Steering IRQ Holder for PCI Steering PS/2 Compatible Mouse Port Numeric Data Processor Primary IDE Channel Secondary IDE Channel
*These IRQs are usually available for ISA or PCI devices.
Interrupt Request Table for this Motherboard
PCI slot 1 PCI slot 2 PCI slot 3 PCI slot 4 PCI slot 5 AGPPro slot Onboard USB controller INT-A shared shared INT-B shared INT-C shared INT-D shared shared shared

6. The power LED on the front panel of the system case lights up. For ATX power supplies, the system LED lights up when you press the ATX power switch. If the monitor complies with green standards or if it has a power standby feature,the monitor LED may light up or switch between orange and green after the system LED does. The system then runs the power-on tests. While the tests are running, the BIOS beeps or additional messages appear on the screen. If you do not see anything within 30 seconds from the time you turn on the power, the system may have failed a power-on test. Check the jumper settings and connections or call your retailer for assistance.

Award BIOS Beep Codes

Beep One short beep when displaying logo Long beeps in an endless loop One long beep followed by three short beeps High frequency beeps when system is working Meaning No error during POST No DRAM installed or detected Video card not found or video card memory bad CPU overheated System running at a lower frequency
3. H/W SETUP Powering Up Connectors
7. At power on, hold down <Delete> to enter BIOS Setup. Follow the instructions in 4. BIOS SETUP. * Powering Off the computer: You must first exit or shut down the system before switching off the power switch. For ATX power supplies, you can press the ATX power switch after exiting or shutting down the operating system. If you use Windows 9X, click the Start button, click Shut Down, then click Shut down the computer? The power supply should turn off after Windows shuts down. NOTE: The message You can now safely turn off your computer does not appear when shutting down with ATX power supplies.
3. H/W SETUP Connectors Powering Up
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4. BIOS SETUP

4.1 Managing and Updating Your BIOS
4.1.1 Upon First Use of the Computer System
It is recommended that you save a copy of the original motherboard BIOS along with a Flash Memory Writer utility (AFLASH.EXE) to a bootable floppy disk in case you need to reinstall the BIOS later. AFLASH.EXE is a Flash Memory Writer utility that updates the BIOS by uploading a new BIOS file to the programmable flash ROM on the motherboard. This file works only in DOS mode. To determine the BIOS version of your motherboard, check the last four numbers of the code displayed on the upper left-hand corner of your screen during bootup. Larger numbers represent a newer BIOS file. 1. Type FORMAT A:/S at the DOS prompt to create a bootable system disk. DO NOT copy AUTOEXEC.BAT and CONFIG.SYS to the disk. 2. Type COPY D:\AFLASH\AFLASH.EXE A:\ (assuming D is your CD-ROM drive) to copy AFLASH.EXE to the boot disk you created. NOTE: AFLASH works only in DOS mode. It does not work in the DOS prompt within Windows and does not work with certain memory drivers that may be loaded when you boot from the hard drive. It is recommended that you reboot using a floppy disk. 3. Reboot the computer from the floppy disk. NOTE: BIOS setup must specify Floppy as the first item in the boot sequence. 4. In DOS mode, type A:\AFLASH <Enter> to run AFLASH.

IMPORTANT! If the word unknown appears after Flash Memory:, the memory chip is either not programmable or is not supported by the ACPI BIOS and therefore, cannot be programmed by the Flash Memory Writer utility.
4. 4. BIOS SETUP SETUP Updating BIOS
5. Select 1. Save Current BIOS to File from the Main menu and press <Enter>. The Save Current BIOS To File screen appears.
6. Type a filename and the path, for example, A:\XXX-XX.XXX and then press <Enter>.
4. BIOS SETUP Updating BIOS
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4.1.2 Updating BIOS Procedures
WARNING! Update the BIOS only if you have problems with the motherboard and you know that the new BIOS revision will solve your problems. Careless updating can result to more problems with the motherboard! 1. Download an updated ASUS BIOS file from the Internet (WWW or FTP) (see ASUS CONTACT INFORMATION on page 3 for details) and save to the boot floppy disk you created earlier. 2. Boot from the floppy disk. 3. At the A:\ prompt, type AFLASH and then press <Enter>. 4. At the Main Menu, type 2 then press <Enter>. The Update BIOS Including Boot Block and ESCD screen appears. 5. Type the filename of your new BIOS and the path, for example, A:\XXXXX.XXX, then press <Enter>. NOTE: To cancel this operation, press <Enter>.
6. When prompted to confirm the BIOS update, press Y to start the update.
7. The utility starts to program the new BIOS information into the Flash ROM. The boot block is updated automatically only when necessary. This minimizes the possibilities of boot problems in case of update failures. When the programming is done, Flashed Successfully appears.
8. Follow the onscreen instructions to continue.
WARNING! If you encounter problems while updating the new BIOS, DO NOT turn off the system because this may cause boot problems. Just repeat the process, and if the problem still persists, load the original BIOS file you saved to the boot disk. If the Flash Memory Writer utility is not able to successfully update a complete BIOS file, the system may not boot. If this happens, call the ASUS service center for support. 44 ASUS CUV266-D Users Manual

4.3.2 Keyboard Features

4. BIOS SETUP Keyboard Features
Boot Up NumLock Status [On] This field enables users to activate the Number Lock function upon system boot. Configuration options: [Off] [On] Keyboard Auto-Repeat Rate [12/Sec] This controls the speed at which the system registers repeated keystrokes. Options range from 6 to 30 characters per second. Configuration options: [6/Sec] [8/Sec] [10/Sec] [12/Sec] [15/Sec] [20/Sec] [24/Sec] [30/Sec] Keyboard Auto-Repeat Delay [1/4 Sec] This field sets the time interval for displaying the first and second characters. Configuration options: [1/4 Sec] [1/2 Sec] [3/4 Sec] [1 Sec] 52 ASUS CUV266-D Users Manual
Language [English] This field displays the BIOS language version. Supervisor Password [Disabled] / User Password [Disabled] These fields allow you to set passwords. To set a password, highlight the appropriate field and press <Enter>. Type in a password then press <Enter>. You can type up to eight alphanumeric characters. Symbols and other characters are ignored. To confirm the password, type the password again and press <Enter>. The password is now set to [Enabled]. This password allows full access to the BIOS Setup menus. To clear the password, highlight this field and press <Enter>. The same dialog box as above appears. Press <Enter>. The password is set to [Disabled]. A Note about Passwords The BIOS Setup program allows you to specify passwords in the Main menu. The passwords control access to the BIOS during system startup. Passwords are not case sensitive, meaning, it makes no difference whether you the password using uppercase or lowercase letters. The BIOS Setup program allows you to specify two different passwords: a Supervisor password and a User password. If you did not set a Supervisor password, anyone can access the BIOS Setup program. If you did, the Supervisor password is required to enter the BIOS Setup program and to gain full access to the configuration fields. Forgot the Password? If you forget your password, you can clear it by erasing the CMOS Real Time Clock (RTC) RAM. The RAM data containing the password information is powered by the onboard button cell battery. To erase the RTC RAM: 1. Turn OFF the computer and unplug the power cord. 2. Remove the battery. 3. Remove the jumper cap from pins 1-2, and place it over pins 2-3 (Clear RTC) for a few seconds to short the jumper. 4. Replace the jumper cap to pins 1-2 (Normal), and re-install the battery. 5. Plug the power cord and turn ON the computer. 6. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter data. Halt On [All Errors] This field specifies the types of errors that will cause the system to halt. Configuration options: [All Errors] [No Error] [All but Keyboard] [All but Disk] [All but Disk/ Keyboard] Installed Memory [XXX MB] This field automatically displays the amount of conventional memory detected by the system during the boot process. ASUS CUV266-D Users Manual 53

4.4 Advanced Menu

CPU Speed [Manual] When the motherboard is set to JumperFree mode, this field allows you to select the internal frequency of the CPU. Select [Manual] if you want to make changes to the two subsequent fields. Note that selecting a frequency higher than the CPU manufacturer recommends may cause the system to hang or crash. Configuration options: [Manual] [600MHz] [900MHz] 1200MHz]
Multiples of 100 (for 100MHz FSB)
4. BIOS SETUP Advanced Menu
Multiples of 133 (for 133MHz FSB)
CPU: System Frequency Multiple (when CPU Speed is set to [Manual]) This field is for unlocked processors only. If your processor frequency multiple is detected locked, you cannot access this field. This field sets the frequency multiple between the CPUs internal frequency (CPU speed) and external frequency. Set this field in conjunction with System/PCI Frequency (MHz) to match the speed of the CPU. System/PCI Frequency (MHz) (when CPU Speed is set to [Manual]) This feature tells the clock generator what frequency to send to the system bus and PCI bus. The bus frequency (external frequency) multiplied by the bus multiple equals the CPU Speed. System/SDRAM Frequency Ratio [Auto] This field determines whether the memory clock frequency is set to be in synchronous or asynchronous mode with respect to the system frequency. The options that appear in the popup menu vary according to the System/PCI Frequency (MHz). ASUS CUV266-D Users Manual
CPU Level 1 Cache, CPU Level 2 Cache [Enabled] These fields allow you to choose from the default of [Enabled] or choose [Disabled] to turn on or off the CPU Level 1 and Level 2 built-in cache. Configuration options: [Disabled] [Enabled] CPU Level 2 Cache ECC Check [Disabled] This function controls the ECC capability in the CPU level 2 cache. Configuration options: [Disabled] [Enabled] Processor Serial Number [Disabled] The Processor Serial Number is a unique number added to every Pentium III processor to help verify the identity of the user across the Internet. Set this field to [Enabled] when you need increased security for doing business online or e-commerce. Otherwise, leave it to its default setting [Disabled] for greater anonymity when surfing the Internet. NOTE: This field is available only when a Pentium III processor is installed in the system. BIOS Update [Enabled] This field functions as an update loader integrated into the BIOS to supply the processor with the required data. When set to [Enabled], the BIOS loads the update on all processors during system bootup. Configuration options: [Disabled] [Enabled] PS/2 Mouse Function Control [Auto] The default setting [Auto] allows the system to detect a PS/2 mouse at startup. If a mouse is detected, the BIOS assigns IRQ12 to the PS/2 mouse. Otherwise, IRQ12 can be used for expansion cards. When you set this field to [Enabled], BIOS always reserves IRQ12, whether or not a PS/2 mouse is detected at startup. Configuration options: [Enabled] [Auto] USB Legacy Support [Auto] This motherboard supports Universal Serial Bus (USB) devices. The default of [Auto] allows the system to detect a USB device at startup. If detected, the USB controller is enabled. If not detected, the USB controller is disabled. When you set this field to [Disabled], the USB controller is disabled whether you are using a USB device or not. Configuration options: [Disabled] [Enabled] [Auto] OS/2 Onboard Memory > 64M [Disabled] When using OS/2 operating systems with installed DRAM of greater than 64MB, you need to set this option to [Enabled]. Otherwise, leave to the default setting [Disabled]. Configuration options: [Disabled] [Enabled]

4.4.1 Chip Configuration

(Scroll down to see the last item as shown) SDRAM Configuration [By SPD] This sets the optimal timings for items 25, depending on the memory modules that you are using. The default setting is [By SPD], which configures items 25 by reading the contents in the SPD (Serial Presence Detect) device. The EEPROM on the memory module stores critical parameter information about the module, such as memory type, size, speed, voltage interface, and module banks. Configuration options: [User Defined] [7ns (143MHz)] [8ns (125MHz)] [By SPD] SDRAM CAS Latency [3T] This controls the latency between the SDRAM read command and the time that the data actually becomes available. NOTE: This field appears only when you set the SDRAM Configuration to [User Defined]. SDRAM RAS Precharge Time [3T] This controls the idle clocks after issuing a precharge command to the SDRAM. NOTE: This field appears only when you set the SDRAM Configuration to [User Defined]. SDRAM RAS to CAS Delay [3T] This controls the latency between the SDRAM active command and the read/write command. NOTE: This field appears only when you set the SDRAM Configuration to [User Defined]. SDRAM Active to Precharge Time [6T] To make changes to this field, set the SDRAM Configuration field to [User Defined]. 56 ASUS CUV266-D Users Manual
4. BIOS SETUP Chip configuration
Bank Interleave [Auto] Configuration options: [None] [2 Banks] [4 Banks] [Auto] DDR_1T/2T_ITEM [2T CMD] Configuration options: [1T CMD] [2T CMD] [Auto Mode] Read Around Write [Enabled] Setting this field to [Enabled] allows the memory controller to store write data in its buffer whenever the CPU issues a write command. The next time the CPU needs the data, it retrieves the data from the memory buffer without accessing the SDRAM. Configuration options: [Disabled] [Enabled] PCI to DRAM Prefetch [Always Prefetch] Configuration options: [Always Prefetch] [Prefetch Disabled] [Prefetch Only Enhance Command] Delayed Transaction [Disabled] When set to [Enabled], this feature frees the PCI bus when the CPU is accessing 8-bit ISA cards. This process normally consumes about 50-60 PCI Clocks without PCI delayed transaction. Set this field to [Disabled] when using ISA cards that are not PCI 2.1 compliant. Configuration options: [Enabled] [Disabled] AGP Capability [4X Mode] This motherboard supports the AGP 4x interface that transfers video data at 1066MB/s. AGP 4x is backward-compatible, so you may leave the default [4X Mode] on even if you are using an AGP 1x or 2x video card. When set to [1X Mode], the AGP interface only provides a peak data throughput of 266MB/s even if you are using an AGP 2x/4x card. When set to [2X Mode], the AGP interface only provides a peak data throughput of 533MB/s even if you are using an AGP 4x card. Configuration options: [1X Mode] [2X Mode] [4X Mode] AGP Fast Write [Disabled] Configuration options: [Disabled] [Enabled] Graphics Aperture Size [64MB] This feature allows you to select the size of mapped memory for AGP graphic data. Configuration options: [4MB] [8MB] [16MB] [32MB] [64MB] [128MB]

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4.4.3 PCI Configuration

PCI/VGA Palette Snoop [Disabled] Some non-standard VGA cards, such as graphics accelerators or MPEG video cards, may not show colors properly. Setting this field to [Enabled] corrects this problem. If you are using standard VGA cards, leave this field to the default setting [Disabled]. Configuration options: [Disabled] [Enabled] PCI Latency Timer [32] Leave this field to the default setting [32] for best performance and stability. SYMBIOS SCSI BIOS [Auto] [Auto] allows the BIOS to detect whether you have a SYMBIOS SCSI card. If such card is detected, the SCSI BIOS is enabled. Otherwise, the onboard SCSI BIOS is disabled. The setting [Disabled] disables the onboard SYMBIOS SCSI BIOS so that the BIOS on an add-on SYMBIOS SCSI card can be used. If the SYMBIOS SCSI card does not have a BIOS, the Symbios SCSI card will not work. Configuration options: [Auto] [Disabled]
4. BIOS SETUP PCI Configuration
Slot 1/5, Slot 2, Slot 3, Slot 4 IRQ [Auto] These fields automatically assign the IRQ for each PCI slot. The default setting for each field is [Auto], which utilizes auto-routing to determine IRQ assignments. Configuration options: [Auto] [NA] [3] [4] [5] [7] [9] [10] [11] [12] [14] [15]
USB Function [Enabled] Set this field to [Enabled] if you want to use Universal Serial Bus devices. Configuration options: [Disabled] [Enabled] Primary VGA BIOS [PCI Card] This field allows you to select the primary graphics card. Configuration options: [PCI Card] [AGP Card] Onboard LAN Boot ROM [Disabled] This field allows you to enable or disable the option ROM in the onboard LAN chipset. Configuration options: [Disabled] [Enabled]
PCI IRQ Resource Exclusion
IRQ XX Used By ISA [No/ICU] These fields indicate whether or not the displayed IRQ for each field is being used by a legacy (non-PnP) ISA card. The setting [No/ICU] for an IRQ field indicates that you are using the ISA Configuration Utility (ICU), and that this particular IRQ is NOT required by a legacy ISA card. Set the IRQ field to [Yes] if you install a legacy ISA card that requires a unique IRQ and you are NOT using ICU. Configuration options: [No/ICU] [Yes] 62 ASUS CUV266-D Users Manual

4.5 Power Menu

The Power menu allows you to reduce power consumption. This feature turns off the video display and shuts down the hard disk after a period of inactivity.
This field acts as the master control for the power management modes. [Max Saving] puts the system into power saving mode after a brief period of system inactivity. [Min Saving] is almost the same as [Max Saving] except that the system inactivity period is longer. [Disabled] deactivates the power saving features, [User Defined] allows you to set power saving options according to your preference. Configuration options: [User Defined] [Disabled] [Min Saving] [Max Saving] IMPORTANT: You should install the Advanced Power Management (APM) utility to keep the system time updated even when the computer enters suspend mode. In DOS environment, you need to add the statement, DEVICE=C:\DOS\POWER.EXE, to the CONFIG.SYS file. In Windows 3.x and Windows 95, you need to install Windows with the APM feature. In Windows 98 or later, APM is automatically installed as indicated by a battery and power cord icon labeled Power Management in the Control Panel. Select the item Advanced in the Power Management Properties dialog box. ASUS CUV266-D Users Manual 63

When ASUS PC Probe starts, a splash screen appears allowing you to select whether to show the screen again when you open PC Probe or not. To bypass this startup screen, clear the Show up in next execution check box.
To open ASUS PC Probe, click the Windows Start button, point to Programs, and then ASUS Utility, and then click Probe Vx.xx.
The PC Probe icon appears on the taskbar system tray indicating that ASUS PC Probe is running. Clicking the icon allows you to see the status of your PC.
6. S/W REFERENCE ASUS PC Probe

6.1 ASUS PC Probe

6.1.2 Using ASUS PC Probe

Monitoring

Monitor Summary Shows a summary of the items being monitored.
Temperature Monitor Shows the PC temperature (for supported processors only).
Temperature Warning threshold adjustment (Move the slider up to increase the threshold level or down to decrease the threshold level)
Fan Monitor Shows the PC fan rotation.
Fan Warning threshold adjustment (Move the slider up to increase the threshold level or down to decrease the threshold level)
Voltage Monitor Shows the PC voltages.
77 Settings Lets you set threshold levels and polling intervals or refresh times of the PCs temperature, fan rotation, and voltages.
Lets you select when to enable software CPU cooling. When When CPU Overheated is selected, the CPU cooling system is enabled whenever the CPU temperature reaches the threshold value.

CPU Cooling System Setup

History Lets you record the monitoring activity of a certain component of your PC for future reference.
Fan Control Lets you enable/disable Smart Fan Control. Smart Fan Control adjusts the fan speed automatically based on the current CPU temperature and predefined threshold.

Information

Hard Drives Shows the used and free space of the PCs hard disk drives and the file allocation table or file system used.
Memory Shows the PC memory load, memory usage, and paging file usage.
Device Summary Shows a summary of devices present in your PC.
DMI Explorer Shows information pertinent to the PC, such as CPU type, CPU speed, and internal/external frequencies, and memory size.

Utility

Lets you run programs outside of the ASUS Probe modules. To run a program, click Execute Program. NOTE: This feature is currently unavailable.

BIOS (Basic Input/Output System) BIOS is a set of routines that affect how the computer transfers data between computer components, such as memory, disks, and the display adapter. The BIOS instructions are built into the computers read-only memory. BIOS parameters can be configured by the user through the BIOS Setup program. The BIOS can be updated using the provided utility to copy a new BIOS file into the EEPROM. Bit (Binary Digit) Represents the smallest unit of data used by the computer. A bit can have one of two values: 0 or 1.

7. APPENDIX Glossary

Boot Boot means to start the computer operating system by loading it into system memory. When the manual instructs you to boot your system (or computer), it means to turn ON your computer. Reboot means to restart your computer. When using Windows 95 or later, selecting Restart from Start | Shut Down. will reboot your computer. Bus Master IDE PIO (Programmable I/O) IDE requires that the CPU be involved in IDE access and waiting for mechanical events. Bus master IDE transfers data to/from the memory without interrupting the CPU. Bus master IDE driver and bus master IDE hard disk drives are required to support bus master IDE mode. Byte (Binary Term) One byte is a group of eight contiguous bits. A byte is used to represent a single alphanumeric character, punctuation mark, or other symbol. COM Port COM is a logical device name used by to designate the computer serial ports. Pointing devices, modems, and infrared modules can be connected to COM ports. Each COM port is configured to use a different IRQ and address assignment. Concurrent PCI Concurrent PCI maximizes system performance with simultaneous CPU, PCI and ISA bus activities. It includes multi-transaction timing, enhanced write performance, a passive release mechanism and support for PCI 2.1 compliant delayed transactions. Concurrent PCI provides increased bandwidth, reduced system latencies, improves video and audio performance, and improves processing of host based applications. CPU (Central Processing Unit) The CPU, sometimes called Processor, actually functions as the brain of the computer. It interprets and executes program commands and processes data stored in memory. Currently, there are socket 370 (for Pentium III FC-PGA and CeleronPPGA), socket 7 (for Pentium, AMD, Cyrix, IBM), slot 1 (for Pentium II and III), slot 2 (for Xeon), and slot A (for AMD) processors. Device Driver A device driver is a special set of instructions that allows the computers operating system to communicate with devices such as VGA, audio, printer, or modem. DOS (Disk Operating System) DOS is the foundation on which all other programs and software applications operate, including Windows. DOS is responsible for allocating system resources such as memory, CPU time, disk space, and access to peripheral devices. For this reason, DOS constitutes the basic interface between you and your computer. DRAM (Dynamic Random Access Memory) There are several different types of DRAM such as, EDO DRAM (Extended Data Output DRAM), SDRAM (Synchronous DRAM), and RDRAM (Rambus DRAM). Flash ROM The flash ROM is designed to be a resident program and can be updated by a specific programming method. Normally, the flash ROM is used for system BIOS which initiates hardware devices and sets up necessary parameters for the OS. Since the contents of flash ROM can be modified, users are able to update the BIOS by themselves. IDE (Integrated Drive Electronics) IDE devices integrate the drive control circuitry directly on the drive itself, eliminating the need for a separate adapter card (in the case for SCSI devices). UltraDMA/ 33 IDE devices can achieve up to 33MB/Sec transfer.

LPT Port (Line Printer Port) Logical device name reserved by DOS for the computer parallel ports. Each LPT port is configured to use a different IRQ and address assignment. MMX A set of 57 new instructions based on a technique called Single Instruction, Multiple Data (SIMD), which is built into the new Intel Pentium PP/MT (P55C) and Pentium II (Klamath) CPU as well as other x86-compatible microprocessors. The MMX instructions are designed to accelerate multimedia and communications applications, such as 3D video, 3D sound, video conference. OnNow The OnNow design initiative is a comprehensive, system-wide approach to system and device power control. OnNow is a term for PC that is always ON but appears OFF and responds immediately to user or other requests. The OnNow design initiative involves changes that will occur in the Microsoft Windows operating system, device drivers, hardware, and applications, and also relies on the changes defined in the Advanced Configuration and Power Interface (ACPI) specification. PC100 SDRAM is Intel's goal is to ensure that memory subsystems continue to support evolving platform requirements and to assure that memory does not become a bottleneck to system performance. It is especially important to ensure that the PC memory roadmap evolves together with the performance roadmaps for the processors, I/O and graphics. PCI Bus (Peripheral Component Interconnect Local Bus) PCI bus is a specification that defines a 32-bit data bus interface. PCI is a standard widely used by expansion card manufacturers. PCI Bus Master The PCI Bus Master can perform data transfer without local CPU help and furthermore, the CPU can be treated as one of the Bus Masters. PCI 2.1 supports concurrent PCI operation to allow the local CPU and bus master to work simultaneously. Plug and Play BIOS The ISA bus architecture requires the allocation of memory and I/O address, DMA channels and interrupt levels among multiple ISA cards. However, configuration of ISA cards is typically done with jumpers that change the decode maps for memory and I/O space and steer the DMA and interrupt signals to different pins on the bus. Further, system configuration files may need to be updated to reflect these changes. Users typically resolve sharing conflicts by referring to documentation provided by each manufacturer. For the average user, this configuration process can be unreliable and frustrating. Plug and play (PnP) BIOS eliminates the ISA add-on card hardware conflict problem. The PnP BIOS uses a memory block to define and remember each card's configuration, which allows the user to change the card's IRQs and DMA in BIOS either automatically or manually. POST (Power On Self Test) When you turn ON the computer, it will first run through the POST, a series of software-controlled diagnostic tests. The POST checks system memory, the motherboard circuitry, the display, the keyboard, the diskette drive, and other I/O devices. PS/2 Port PS/2 ports are based on IBM Micro Channel Architecture. This type of architecture transfers data through a 16-bit or 32-bit bus. A PS/2 mouse and/or keyboard may be used on ATX motherboards. RDRAM (Rambus DRAM) Developed by Rambus, Inc., this type of memory can deliver up to 1.6GB of data per second. RDRAM is the first interface standard that can be directly implemented on high performance VLSI components such as, CMOS DRAMs, memory controllers, and graphics/video ICs. ASUS CUV266-D Users Manual 83

Accelerated Graphics Port 8 AGP Capability 57 AGP Pro Slot 27 AGP. See Accelerated Graphics Port ASUS PC Probe 75 Starting 75 Task Bar Icon 79 Using 75, 76 ATAPI CD-ROM 67 Automatic Power Up 66 Chassis Intrusion 35 Chip Configuration 56 Connectors Chassis Fan 34 CPU Fan 34 External 29 Floppy Disk Drive 31 IDE 32 Infrared Module 35 Internal 31 Panel 38 Parallel Port 30 Power Supply Thermal Sensor 38 PS/2 Keyboard 29 PS/2 Mouse 29 Serial Port 30 SMBus 34, 37 USB 29 Wake-On-LAN 33 Wake-On-Ring 33 CPU. See Central Processing Unit
BIOS Advanced Menu 54 Beep Codes 39 Boot Menu 67 Boot Sequence 67 Exit Menu 69 Language 53 Legend Bar 46 Main Menu 48 Menu Bar 46 Power Menu 63 Setup Defaults, loading 70 Setup Program 45 Smart BIOS 9 Sub-menu launching 47 Updating 41 Boot Device Selection 67 Boot Up NumLock Status 52 Boot Virus Detection 68
DIMMs. See Dual Inline Memory Modules DIP Switches 17 Dual Inline Memory Modules 21 DIMM Sockets 22
Expansion Cards Assigning IRQs 26 Installing 25 Expansion Slots 9
Central Processing Unit (CPU) 23 External Frequency 18, 19 Installation 24 Level 1/Level 2 Cache 55 Serial Number 55 Speed 54 ZIF Socket 23
Floppy 3 Mode 48 Floppy Disk Drive Connector 31
Hard Disk Drives (HDDs) CHS Capacity 51 Cylinders 50 Heads 51 LBA Capacity 51 Primary/Secondary Master 49 Primary/Secondary Slave 49 Sectors 51 Translation Method 50 Types 49 Hardware Monitor 66 Hardware Setup Procedure 16 Headers USB 34
Motherboard Components 12, 13 IRQ Table 26 Layout 14 Settings 16 Specifications 8 Support CD 71 Mouse Connector 29 Multi-Sector Transfers 51

Operating Systems 71

Parallel Port 60 Modes 60 IDE Activity LED 31 Parallel Port Connector 30 IDE Connectors 32 Password IDE Hard Disks. See Hard Disk Drives If You Forget 53 (HDDs) Notes 53 Infrared Module Connector 35 Supervisor 53 Interrupt Request (IRQ) User 53 Standard Assignments 26 PCI Configuration 61 PCI Latency Timer 61 J PCI/VGA Palette Snoop 61 JumperFree Mode 17 PIO Mode 51 Plug & Play O/S 68 K Ports. See Connectors Keyboard Power Management 63 Auto-Repeat Delay 52 Power On Self Test 68 Auto-Repeat Rate 52 Processor 8 Connector 29 Processor Serial Number 55 Features 52 PS/2 Keyboard 29 PS/2 Mouse 29 L Function Control 55 LAN Jumper Setting 19 Legacy Diskette 48
RTC RAM Clearing 20 USB Legacy Support 56 Using ASUS PC Probe 75 USWC 58
SCSI BIOS 61 SDRAM Active to Precharge Time 56 CAS Latency 56 Configuration 56 RAS Precharge Time 56 RAS to CAS Delay 56 Read Around Write 56 Serial Ports 59 Connectors 30 SMART Monitoring 51 SMBus Connector 34, 37 Support CD 71 Applications 72 Installation Menu 71 Suspend Mode 64 System Chipset 8 System Date 48 System Frequency Multiple 54 System Memory DIMMs 21 Installation 22 SDRAM 21 System Start Up 39 System Time 48 System/PCI Frequency 54

Video Memory 58

Wake-On-LAN Connector 33 Wake-On-Ring Connector 33 Windows 98 First Time Installation 71

2. FEATURES Specifications
AGP Pro Slot: Comes with an Accelerated Graphics Port (AGP) Pro slot that supports high performance AGP cards targeted at 3D graphical applications supporting 66MHz 4X mode. The slot is backward compatible with AGP 4X/2X cards. Wake-On-LAN: Supports Wake-On-LAN activity through a WOL connector or an optional ASUS PCI-L101 10/100 Fast Ethernet PCI card. Wake-On-Ring: Supports Wake-On-Ring activity through a PCI modem card that supports a WOR connector. PC Health Monitoring: Provides an easy way to test and manage system status information, such as CPU and system voltages, temperatures, and fan status through the onboard hardware ASUS ASIC and the bundled ASUS PC Probe. SMBus: Features the System Management Bus interface used to physically transport commands and information between SMBus devices. PCI Expansion Slots: Provides five 32-bit PCI (Rev. 2.2) expansion slots that support Bus Master PCI cards, such as SCSI or LAN cards, with 133MB/s maximum throughput. Smart BIOS: 2Mb firmware provides CPU/DDR SDRAM frequency adjustments, BIOS write protection, and HD/SCSI/MO/ZIP/CD/Floppy boot selection. Enhanced ACPI and Anti-Boot Virus Protection: Programmable BIOS (Flash EEPROM) that offers enhanced ACPI for Windows 98/2000/ME compatibility, built-in firmware-based virus protection, and autodetection of most devices for a virtual automatic setup. IrDA: Supports an optional infrared port module for wireless interface. Desktop Management Interface (DMI): Supports DMI through BIOS that allows hardware to communicate within a standard protocol and create a higher level of compatibility. (Requires DMI-enabled components.) Onboard LED: Comes with a power LED that lights up if there is any standby power on the motherboard. This LED acts as a reminder to turn off the system power before plugging or unplugging devices to prevent damage to the motherboard, peripherals, and other system components. Easy Connectivity and System Information Access: Supports an optional ASUS iPanel, an easy-to-access box with system diagnostic display area, system status LEDs, USB ports, and hot keys. The AFPANEL connector on the motherboard accommodates the ASUS iPanel.

3. H/W SETUP System Memory
3.5.2 Memory Installation
WARNING! Make sure that you unplug the power supply when adding or removing memory modules or other system components. Failure to do so may cause severe damage to both the motherboard and the components. A 184-pin DDR SDRAM DIMM has a single notch near the center. The number of pins are different on either side of the notch so the module only fits in one direction. Insert a DDR DIMM into the DDR socket as shown.
CUV266-DLS 184-Pin DDR DIMM Sockets

104 Pins

80 Pins
3.6 Central Processing Unit (CPU)
The motherboard comes with dual Socket 370 for the Intel Pentium III Coppermine CPUs listed in 2.1.1 Specifications. The following illustration shows the CPU socket location on the motherboard and the correct CPU orientation.

CUV266-DLS Socket 370

Note in the illustration that CPUs have marks (usually a notch or a gold mark on one corner) to help you identify the proper orientation and enable you to correctly install a CPU. It is important that you match the marked corner of the CPU with the corresponding corner on the socket so as not to damage the CPU pins. The CPU picture above is for reference only. Usually, when you buy a CPU, the heatsink and fan are already attached to the CPU. If a heatsink and fan did not come with the package, make sure you obtain one before installing the CPU. WARNING! You must install the proper heatsink and fan to the CPU. Failure to do so will cause the CPU to overheat and may damage both the CPU and the motherboard. Install an auxillary fan, if necessary. CAUTION! Be careful not to scrape the motherboard when mounting/unmounting a clamp-style processor fan to avoid damaging the motherboard.
Proceed to the next section for the steps on how to properly install a CPU.

3. H/W SETUP CPU

Pentium III

Gold Arrow

3.6.1 CPU Installation
Follow these steps to install a CPU. 1. Locate the ZIF socket on the motherboard. 2. Unlock the socket by pressing the lever sideways then lifting it up to a 90-100 angle.
3. Position the CPU above the socket such that its notched or marked corner matches the socket corner near the end of the lever, while making sure that the CPU is parallel to the socket. 4. Carefully insert the CPU into the socket until it fits in place. CAUTION! The CPU fits only in one orientation. Do not force the CPU into the socket to prevent bending the pins and damaging the CPU. If the CPU does not fit completely, check its orientation or check for bent pins. 5. When the CPU is in place, press it firmly on the socket while you push down the socket lever to secure the CPU. The lever clicks on the socket indicating that it is locked. 6. Attach the heatsink and fan to the CPU, if they were not pre-installed by the vendor. Refer to the installation instructions that came with the heatsink and fan. NOTE: Do not forget to set the correct Bus and Frequency Multiple Settings (frequency multiple setting is available only on unlocked processors) for the processor to avoid start-up problems. CAUTION! When installing two CPUs, make sure that the CPUs are identical. When using only one CPU, make sure to install a terminator on the second CPU socket. DO NOT install heatsink and fan on the terminator!

*These IRQs are usually available for ISA or PCI devices.
NOTE: IRQ settings vary with different operating systems. Refer to the actual condition of your system when changing the settings.
Interrupt Request Table for this Motherboard
PCI slot 1 PCI slot 2 PCI slot 3 PCI slot 4 PCI slot 5 AGPPro slot Onboard USB controller Onboard SCSI controller Onboard LAN controller INT-A shared shared INT-B shared shared INT-C shared shared INT-D shared shared shared shared
3.7.3 Accelerated Graphics Port (AGP) Pro Slot
This motherboard has an Accelerated Graphics Port (AGP) Pro slot to support the new generation of graphics cards with ultra-high memory bandwidth.
CUV266-DLS Accelerated Graphics Port (AGP Pro)
CAUTION! The AGP Pro slot is shipped with a warning label over the 20-pin bay. DO NOT remove this label and the safety tab underneath if you are using an AGP card without a retention notch. Removing it may cause the card to shift, and cause damage to the card, slot, and motherboard. Remove the label and tab ONLY if you are using an AGP Pro card. Use a rigid tip, such as a pen tip, to dislodge and remove the tab from the bay.

Removing the tab

AGP Card without Retention Notch

TOP VIEW

20-pin bay Rib (inside slot) 28-pin bay Rib
30 ASUS CUV266-DLS Users Manual

3.8 Connectors

3.8.1 External Connectors
1) PS/2 Mouse Port (Green 6-pin PS2KBMS) The system automatically directs IRQ12 to the PS/2 mouse if one is detected. If no mouse is detected, IRQ12 become available to expansion cards. See PS/2 Mouse Function Control in 4.4 Advanced Menu.
PS/2 Mouse (6-pin Female)
2) PS/2 Keyboard Port (Purple 6-pin PS2KBMS) This connection is for a standard keyboard using an PS/2 plug (mini DIN). This connector does not allow standard AT size (large DIN) keyboard plugs. You may use a DIN to mini DIN adapter on standard AT keyboards.
PS/2 Keyboard (6-pin Female)
3) Universal Serial Bus Ports 1 & 2 (Black two 4-pin USB) Two USB ports are available for connecting USB devices.
Universal Serial Bus (USB)

3. H/W SETUP Connectors

4) Parallel Port (Burgundy 25-pin PRINTER) You can enable the parallel port and choose the IRQ through Onboard Parallel Port (see 4.4.2 I/O Device Configuration). NOTE: Serial printers must be connected to the serial port.

CUV266-DLS Chassis Open Alarm Lead

CHASSIS

+5Volt (Power Supply Stand By) Chassis Signal Ground

CIRRX CIR+5V

Standard Infrared (SIR) Front View Back View SIR CIR
11) Power Supply Connectors (20-pin block ATXPWR, 6-pin EAUXPWR) These connectors connect to an ATX 12V power supply. The plugs from the power supply fit in only one orientation because of the different hole sizes. Find the proper orientation and push down firmly making sure that the pins are aligned. IMPORTANT: Make sure that the ATX 12V power supply (minimum recommended wattage: 230W) can supply at least 10mA on the +5-volt standby lead (+5VSB). The system may become unstable and experience difficulty in powering up if the power supply is inadequate. For Wake-On-LAN support, the ATX power supply must supply at least 720mA +5VSB.
+5.0 Volts +5.0 Volts -5.0 Volts Ground Ground Ground Power Supply On Ground -12.0 Volts +3.3 Volts

ATXPWR

CUV266-DLS ATX Power Connector

+5V +3V

EAUXPWR
+12.0 Volts +5V Standby Power Good Ground +5.0 Volts Ground +5.0 Volts Ground +3.3 Volts +3.3 Volts
12) SMBus Connector (5-1 pin SMB_CON) This connector allows you to connect SMBus (System Management Bus) devices. SMBus devices communicate by means of the SMBus with an SMBus host and/or other SMBus devices. SMBus is a specific implementation of an I2C bus, a multi-device bus that allows multiple chips to connect to the same bus and enables each one to act as a master by initiating data transfer.

Ground SMBDATA +3V

SMBCLK
CUV266-DLS SMBus Connector
13) ASUS iPanel Connector (24-1 pin AFPANEL) This connector allows you to connect an optional ASUS iPanel, an easy-to access drive bay with front I/O ports and status LEDs. The ASUS iPanel provides easy and convenient connectivity to USB devices, as well as easy access to important computer operations as web browsing and email. If you are not using an ASUS iPanel, you can connect an optional wireless transmitting and receiving infrared module to the SIR connector.
IRRX GND IRTX SMBDATA +3VSB SMBCLK NC NC NC NC +5 V
NC GND NC NC +5VSB CHASSIS# EXTSMI# +5V MLEDPCIRST# BATT NC

NC GND NC NC +5VSB

Standard Infrared (SIR) Front View Back View

IR_CON

IRTX GND

+5V (NC) IRRX

CUV266-DLS Front Panel Connectors

6. For ATX power supplies, the system LED lights up when you press the ATX power switch. If the monitor complies with green standards or if it has a power standby feature,the monitor LED may light up or switch between orange and green after the system LED does. The system then runs the power-on tests, during which the BIOS emits beeping sounds and/or additional messages appear on the screen. If you do not see anything within 30 seconds from the time you turn on the power, the system may have failed a power-on test. Check the jumper settings and connections or call your retailer for assistance.

Award BIOS Beep Codes

Beep One short beep when displaying logo Long beeps in an endless loop One long beep followed by three short beeps High frequency beeps when system is working Meaning No error during POST No DRAM installed or detected Video card not found or video card memory bad CPU overheated System running at a lower frequency
7. At power on, hold down <Delete> to enter BIOS Setup. Follow the instructions in 4. BIOS SETUP. * Powering Off the computer: You must first exit or shut down the system before switching off the power. For ATX power supplies, you can press the ATX power switch after exiting or shutting down the operating system. If you use Windows 9X, click the Start button, then Shut Down, then click Shut down the computer? The power supply should turn off after Windows shuts down. NOTE: The message You can now safely turn off your computer does not appear when shutting down with ATX power supplies.
3. H/W SETUP Powering Up Connectors
3. H/W SETUP Connectors Powering Up
44 ASUS CUV266-DLS Users Manual

4. BIOS SETUP

4.1 Managing and Updating Your BIOS
4.1.1 Upon First Use of the Computer System
It is recommended that you save a copy of the original motherboard BIOS along with a Flash Memory Writer utility (AFLASH.EXE) to a bootable floppy disk in case you need to reinstall the BIOS later. AFLASH.EXE is a Flash Memory Writer utility that updates the BIOS by uploading a new BIOS file to the programmable flash ROM on the motherboard. This file works only in DOS mode. To determine the BIOS version of your motherboard, check the last four numbers of the code displayed on the upper left-hand corner of your screen during bootup. Larger numbers represent a newer BIOS file. 1. Type FORMAT A:/S at the DOS prompt to create a bootable system disk. DO NOT copy AUTOEXEC.BAT and CONFIG.SYS to the disk. 2. Type COPY D:\AFLASH\AFLASH.EXE A:\ (assuming D is your CD-ROM drive) to copy AFLASH.EXE to the boot disk you created. NOTE: AFLASH works only in DOS mode. It does not work in the DOS prompt within Windows and does not work with certain memory drivers that may be loaded when you boot from the hard drive. It is recommended that you reboot using a floppy disk. 3. Reboot the computer from the floppy disk. NOTE: BIOS setup must specify Floppy as the first item in the boot sequence. 4. In DOS mode, type A:\AFLASH <Enter> to run AFLASH.

IMPORTANT! If the word unknown appears after Flash Memory:, the memory chip is either not programmable or is not supported by the ACPI BIOS and therefore, cannot be programmed by the Flash Memory Writer utility.
4. BIOS SETUP Updating BIOS
5. Select 1. Save Current BIOS to File from the Main menu and press <Enter>. The Save Current BIOS To File screen appears.
6. Type a filename and the path, for example, A:\XXX-XX.XXX and then press <Enter>.
46 ASUS CUV266-DLS Users Manual
4.1.2 Updating BIOS Procedures
WARNING! Update the BIOS only if you have problems with the motherboard and you know that the new BIOS revision will solve your problems. Careless updating can result to more problems with the motherboard! 1. Download an updated ASUS BIOS file from the Internet (WWW or FTP) (see ASUS CONTACT INFORMATION on page 3 for details) and save to the boot floppy disk you created earlier. 2. Boot from the floppy disk. 3. At the A:\ prompt, type AFLASH and then press <Enter>. 4. At the Main Menu, type 2 then press <Enter>. The Update BIOS Including Boot Block and ESCD screen appears. 5. Type the filename of your new BIOS and the path, for example, A:\XXXXX.XXX, then press <Enter>. NOTE: To cancel this operation, press <Enter>.
6. When prompted to confirm the BIOS update, press Y to start the update.
7. The utility starts to program the new BIOS information into the Flash ROM. The boot block is updated automatically only when necessary. This minimizes the possibilities of boot problems in case of update failures. When the programming is done, Flashed Successfully appears.
8. Follow the onscreen instructions to continue.
WARNING! If you encounter problems while updating the new BIOS, DO NOT turn off the system because this may cause boot problems. Just repeat the process, and if the problem still persists, load the original BIOS file you saved to the boot disk. If the Flash Memory Writer utility is not able to successfully update a complete BIOS file, the system may not boot. If this happens, call the ASUS service center for support. 48 ASUS CUV266-DLS Users Manual

Head This field configures the number of read/write heads. Refer to the drive documentation to determine the correct value to enter into this field. NOTE: To make changes to this field, set the Type field to [User Type HDD] and the Translation Method field to [Manual]. Sector This field configures the number of sectors per track. Refer to the drive documentation to determine the correct value to enter into this field. NOTE: To make changes to this field, set the Type field to [User Type HDD] and the Translation Method field to [Manual]. CHS Capacity This field shows the drives maximum CHS capacity as calculated by the BIOS based on the drive information you entered. Maximum LBA Capacity This field shows the drives maximum LBA capacity as calculated by the BIOS based on the drive information you entered. Multi-Sector Transfers [Maximum] This option automatically sets the number of sectors per block to the highest number that the drive supports. Note that when this field is automatically configured, the set value may not always be the fastest value for the drive. You may also manually configure this field. Refer to the documentation that came with the hard drive to determine the optimum value and set it manually. NOTE: To make changes to this field, set the Type field to [User Type HDD]. Configuration options: [Disabled] [2 Sectors] [4 Sectors] [8 Sectors] [16 Sectors] [32 Sectors] [Maximum] SMART Monitoring [Disabled] This filed allows you to enable or disable the S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) system that utilizes internal hard disk drive monitoring technology. This parameter is normally disabled because the resources used in the SMART monitoring feature may decrease system performance. Configuration options: [Disabled] [Enabled] PIO Mode [4] This option lets you set a PIO (Programmed Input/Output) mode for the IDE device. Modes 0 through 4 provide successively increased performance. Configuration options: [0] [1] [2] [3] [4] Ultra DMA Mode [Disabled] Ultra DMA capability allows improved transfer speeds and data integrity for compatible IDE devices. Set to [Disabled] to suppress Ultra DMA capability. NOTE: To make changes to this field, set the Type field to [User Type HDD]. Configuration options: [0] [1] [2] [3] [4] [5] [Disabled] ASUS CUV266-DLS Users Manual 55
Other options for the Type field are: [CD-ROM] - for IDE CD-ROM drives [LS-120] - for LS-120 compatible floppy disk drives [ZIP] - for ZIP-compatible disk drives [MO] - for IDE magneto optical disk drives [Other ATAPI Device] - for IDE devices not listed here After making your selections on this sub-menu, press the <Esc> key to return to the Main menu. When the Main menu appears, the hard disk drive filed displays the size for the hard disk drive that you configured.

4.3.2 Keyboard Features

4. BIOS SETUP Keyboard Features
Boot Up NumLock Status [On] This field enables users to activate the Number Lock function upon system boot. Configuration options: [Off] [On] Keyboard Auto-Repeat Rate [12/Sec] This controls the speed at which the system registers repeated keystrokes. Options range from 6 to 30 characters per second. Configuration options: [6/Sec] [8/Sec] [10/Sec] [12/Sec] [15/Sec] [20/Sec] [24/Sec] [30/Sec] Keyboard Auto-Repeat Delay [1/4 Sec] This field sets the time interval for displaying the first and second characters. Configuration options: [1/4 Sec] [1/2 Sec] [3/4 Sec] [1 Sec] 56 ASUS CUV266-DLS Users Manual
Language [English] This field displays the BIOS language version. Supervisor Password [Disabled] / User Password [Disabled] These fields allow you to set passwords. To set a password, highlight the appropriate field and press <Enter>. Type in a password then press <Enter>. You can type up to eight alphanumeric characters. Symbols and other characters are ignored. To confirm the password, type the password again and press <Enter>. The password is now set to [Enabled]. This password allows full access to the BIOS Setup menus. To clear the password, highlight this field and press <Enter>. The same dialog box as above appears. Press <Enter>. The password is set to [Disabled]. A Note about Passwords The BIOS Setup program allows you to specify passwords in the Main menu. The passwords control access to the BIOS during system startup. Passwords are not case sensitive, meaning, it makes no difference whether you the password using uppercase or lowercase letters. The BIOS Setup program allows you to specify two different passwords: a Supervisor password and a User password. If you did not set a Supervisor password, anyone can access the BIOS Setup program. If you did, the Supervisor password is required to enter the BIOS Setup program and to gain full access to the configuration fields. Forgot the Password? If you forget your password, you can clear it by erasing the CMOS Real Time Clock (RTC) RAM. The RAM data containing the password information is powered by the onboard button cell battery. To erase the RTC RAM: 1. Turn OFF the computer and unplug the power cord. 2. Remove the battery. 3. Remove the jumper cap from pins 1-2, and place it over pins 2-3 (Clear RTC) for a few seconds to short the jumper. 4. Replace the jumper cap to pins 1-2 (Normal), and re-install the battery. 5. Plug the power cord and turn ON the computer. 6. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter data. Halt On [All Errors] This field specifies the types of errors that will cause the system to halt. Configuration options: [All Errors] [No Error] [All but Keyboard] [All but Disk] [All but Disk/ Keyboard] Installed Memory [XXX MB] This field automatically displays the amount of conventional memory detected by the system during the boot process. ASUS CUV266-DLS Users Manual 57

4. BIOS SETUP Power Menu

Power Management [User Defined] This field must be enabled to activate the automatic power saving features. When set to [Disabled], the power management features do not function regardless of the other settings on this menu. The [User Defined] option allows you to make your own selections in the Power menu. When set to [Max Saving], system power conserved to its greatest amount. The Suspend Mode field is then be set to a predefined value that ensures maximum power savings.
Video Off Option [Suspend -> Off ] This field determines when to activate the video off feature for monitor power management. Configuration options: [Always On] [Suspend -> Off] Video Off Method [DPMS OFF] This field defines the video off features. The DPMS (Display Power Management System) feature allows the BIOS to control the video display card if it supports the DPMS feature. [Blank Screen] only blanks the screen (use this for monitors without power management or green features. If set up in your system, your screen saver will not display with [Blank Screen] selected). [V/H SYNC+Blank] blanks the screen and turns off vertical and horizontal scanning. Configuration options: [Blank Screen] [V/H SYNC+Blank] [DPMS Standby] [DPMS Suspend] [DPMS OFF] [DPMS Reduce ON] HDD Power Down [Disabled] Shuts down any IDE hard disk drives in the system after a period of inactivity as set in this user-configurable field. This feature does not affect SCSI hard drives. Configuration options: [Disabled] [1 Min] [2 Min] [3 Min].[15 Min] Suspend Mode [Disabled] Sets the time period before the system goes into suspend mode. Configuration options: [Disabled] [30 Sec] [1 Min] [2 Min] [4 min] [8 Min] [20 Min] [30 Min] [40 Min] PWR Button < 4 Secs [Soft Off] When set to [Soft off], the ATX switch can be used as a normal system power-off button when pressed for less than 4 seconds. [Suspend] allows the button to have a dual function where pressing less than 4 seconds will place the system in sleep mode. Regardless of the setting, holding the ATX switch for more than 4 seconds will power off the system. Configuration options: [Soft off] [Suspend]

4.5.1 Power Up Control

AC PWR Loss Restart [Disabled] This allows you to set whether you want your system to reboot after the power has been interrupted. [Disabled] leaves your system off and [Enabled] reboots your system. [Previous State] sets your system back to the state it is before the power interruption. Configuration options: [Disabled] [Enabled] [Previous State] PWR Up On External Modem Act [Disabled] This allows either settings of [Enabled] or [Disabled] for powering up the computer when the external modem receives a call while the computer is in Soft-off mode. NOTE: The computer cannot receive or transmit data until the computer and applications are fully running. Thus connection cannot be made on the first try. Turning an external modem off and then back on while the computer is off causes an initialization string that will also cause the system to power on. Configuration options: [Disabled] [Enabled] Wake On LAN or PCI Modem [Disabled] Configuration options: [Disabled] [Enabled] Wake Up By USB Device [Disabled] Configuration options: [Disabled] [Enabled] Wake Up By Keyboard [Space Bar] Configuration options: [Disabled] [Space Bar] Power Up on PS2 KB/Mouse [Disabled] Set this field to [Enabled] if you want to use your PS/2 keyboard or PS/2 mouse to power up the computer. Configuration options:[Enabled] [Disabled] ASUS CUV266-DLS Users Manual 69

4. BIOS SETUP Power Up Control
Automatic Power Up [Disabled] This allows an unattended or automatic system power up. You may configure your system to power up at a certain time of the day by selecting [Everyday] or at a certain time and day by selecting [By Date]. Configuration options: [Disabled] [Everyday] [By Date]

4.5.2 Hardware Monitor

4. BIOS SETUP Hardware Monitor
MB Temperature [xxxC/xxxF] CPU1 Temperature [xxxC/xxxF] CPU2 Temperature [xxxC/xxxF] The onboard hardware monitor automatically detects the MB (motherboard) and CPU temperatures. CPU1 Fan Speed [xxxxRPM] CPU2 Fan Speed [xxxxRPM] Chassis Fan Speed [N/A] The onboard hardware monitor automatically detects the CPU and chassis fan speeds in rotations per minute (RPM). VCORE1 Voltage, VCORE2 Voltage, +3.3V Voltage, +5V Voltage, +12V Voltage The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators. NOTE: If any of the monitored items is out of range, the following error message appears: Hardware Monitor found an error. Enter Power setup menu for details. You will then be prompted to Press F1 to continue or DEL to enter SETUP. ASUS CUV266-DLS Users Manual

4.6 Boot Menu

Boot Sequence
The Boot menu allows you to select among the four possible types of boot devices listed using the up and down arrow keys. By using the <+> or <Space> key, you can promote devices and by using the <-> key, you can demote devices. Promotion or demotion of devices alters the priority which the system uses to search for a boot device on system power up. Configuration fields include Removable Devices, IDE Hard Drive, ATAPI CD-ROM, and Other Boot Device. Removable Device [Legacy Floppy] Configuration options: [Disabled] [Legacy Floppy] [LS-120] [ZIP] [ATAPIMO] IDE Hard Drive This field allows you to select which IDE hard disk drive to use in the boot sequence. Pressing [Enter] will show the product IDs of all connected IDE hard disk drives. ATAPI CD-ROM This field allows you to select which ATAPI CD-ROM drive to use in the boot sequence. Pressing [Enter] will show the product IDs of all your connected ATAPI CD-ROM drives. Other Boot Device Select [INT18 Device (Network)] Configuration options: [Disabled] [SCSI Boot Device] [INT18 Device (Network)] ASUS CUV266-DLS Users Manual 71

4. BIOS SETUP Boot Menu

Plug & Play O/S [No] This field allows you to use a Plug-and-Play (PnP) operating system to configure the PCI bus slots instead of using the BIOS. When [Yes] is selected, interrupts may be reassigned by the OS. When a non-PnP OS is installed or you want to prevent reassigning of interrupt settings, select the default setting of [No]. Configuration options: [No] [Yes] MPS 1.4 Support [Enabled] This field allows you to enable or disable the Multiprocessor Specification 1.4 feature. Configuration options: [Disabled] [Enabled] Boot Virus Detection [Disabled] This field allows you to set boot virus detection, ensuring a virus-free boot sector. The system halts and displays a warning message when it detects a virus. If this occurs, you can either allow the operation to continue or use a virus-free bootable floppy disk to restart and investigate your system. Configuration options: [Disabled] [Enabled] Quick Power On Self Test [Enabled] This field speeds up the Power-On-Self Test (POST) routine by skipping retesting a second, third, and fourth time. Configuration options: [Disabled] [Enabled] Boot Up Floppy Seek [Enabled] When enabled, the BIOS will seek the floppy disk drive to determine whether the drive has 40 or 80 tracks. Configuration options: [Disabled] [Enabled]

When you start Windows for the first time after the installation of the motherboard, Windows 98/2000/ME detects the onboard audio and video chips and may attempt to install a driver from its system registry. When prompted to restart, select No and then follow the normal setup procedures on the screen.
5.2 CUV266-DLS Motherboard Support CD
To begin using the support CD, insert it into the CD-ROM drive. The support installation menu should appear. If the menu does not appear, double-click or run D:\ASSETUP.EXE (assuming that your CD-ROM drive is drive D). NOTE: The support CD contents are subject to change at any time without notice.

5.2.1 Installation Menus

5. S/W SETUP OS / Support CD

5.2.2 Applications

VIA 4 in 1 Drivers: Installs VIA 4 in 1 Drivers that automatically detect and install the Bus Master PCI IDE Driver, VIA AGP Driver, VIA INF Driver, and IRQ Routing Driver. Intel 82559 LAN Chip Driver: Installs the Intel 82559 network driver. Adaptec Ultra160 SCSI Driver: Installs the Adaptec Ultra160 SCSI driver. ASUS PC Probe Vx.xx.xx: Installs a smart utility that can monitor your computer fan, temperature, and voltages. ASUS Update Vx.xx.xx: Installs the ASUS Update program. This program allows you download the latest version of Flash BIOS from the ASUS website. Before using ASUS Update, make sure that you have a network card and a TCP/ IP network driver. Microsoft DirectXx.x Driver: Installs the Microsoft DirectX 8.0 driver. ADOBE Acrobat Reader Vx.xx: Installs the Adobe Acrobat Reader software necessary to view users manuals in PDF format.

5. S/W SETUP Support CD

Cyberlink Video and Audio Applications: Installs the Cyberlink PowerPlayer SE 5.0, and Cyberlink VideoLive Mail 3.10. ASUS Screen Saver: Installs the ASUS screen saver. NOTE: The following items are on the second menu screen. To see the items, click on the arrow (pointing to the right) on the lower right corner of the screen. To return to the first menu screen, click on the arrow (pointing to the left) on the lower right corner of the second screen. E-Color 3Deep: Installs the 3Deep software. 3Deep is the first application that gives online gamers a competitive edge in multi-player skirmishes. This application eliminates dark washed-out graphics to deliver true vibrant colors. Show Motherboard Information: Allows you to view information about the motherboard, such as product name, BIOS version, and CPU. Browse Support CD: Allows you to view the contents of the support CD. ReadMe: Allows you to view a list of the files included in the support CD and ASUS contact information. Exit: Exits the CD installation menu.

ROM (Read Only Memory) ROM is nonvolatile memory used to store permanent programs (called firmware) used in certain computer components. Flash ROM (or EEPROM) can be reprogrammed with new programs (or BIOS). SCSI (Small Computer System Interface) High speed multi-threaded I/O interface defined by the X3T9.2 committee of the American National Standards Institute (ANSI) for connecting many peripheral devices. The standard started from 10MBytes/sec to 160MBytes/sec available today. SDRAM (Synchronous DRAM) The SDRAM features a fully synchronous operation referenced to a positive edge clock whereby all operations are synchronized at a clock input which enables the coexistence of high performance and a simple user interface. SDRAM takes memory access away from the CPU's control; internal registers in the chips accept the request, and let the CPU do something else while the data requested is assembled for the next time the CPU talks to the memory. As they work on their own clock cycle, the rest of the system can be clocked faster. There is a version optimized for video cards, and main memory for motherboards. SPD for SDRAM module Serial Presence Detect (SPD) is most like an ID detect for SDRAM module, it using a EEPROM component on DIMM module for storing module configuration information inside. The Serial Presence Detect function is implemented using a 2048 bit EEPROM component. This nonvolatile storage device contains data programmed by the DIMM manufacturer that identifies the module type and various SDRAM organization and timing parameters. SSE (Streaming SIMD Extensions) A set of new instructions added to existing architectures that enables a better visual experience with an accelerated 3D geometry pipeline and support for new applications, such as real-time video encoding and speech recognition. System Disk A system disk contains the core file of an operating system and is used to boot up the operating system. UltraDMA Ultra DMA/33 is a "synchronous DMA" protocol designed by Intel. This function is included into Intel's PIIX4 chipset. The traditional IDE transfer only uses one edge of the data stroke as the data transfer. Ultra DMA/33 uses both edges of data strobe when the data is transferred. Hence, the data transfer rate is double of the PIO mode 4 or DMA mode 2 (16.6MB/s x2 = 33MB/s) on ATA-2 devices. Ultra ATA/66, also known as Ultra DMA/66, is an extension of current Ultra ATA/ 33 interface. This new high-speed interface has doubled the Ultra ATA/33 burst data transfer rate to 66.6 Mbytes/sec and maximized disk performance under current PCI local bus environment USB (Universal Serial Bus) A 4-pin serial cable bus that allows up to 127 plug and play computer peripherals such as keyboard, mouse, joystick, scanner, printer, modem, and monitor to share a bandwidth through a host scheduled token based protocol. This allows attaching or detaching while the host and other peripherals are in operation. Supports synchronous and asynchronous transfer types over the same set of wires up to 12Mbit/sec. USB 2.0 provides twice the transfer rate compared to USB 1.0 and competes with the 1394 standard. Wake-On-LAN The computer automatically wakes up upon receiving a wake-up packet through a Network interface when it is under power soft-off, suspend or sleep mode.

Auto-Repeat Rate 56 Connector 31 Features 56
Processor 8 PS/2 Keyboard 31 PS/2 Mouse 31 Function Control 59 Universal Serial Bus (USB) 31 Headers 38 Ports 31 USB Legacy Support 60 Using ASUS PC Probe 79 USWC 62

RTC RAM Clearing 20

Video Memory 62
SDRAM Active to Precharge Time 60 CAS Latency 60 Configuration 60 RAS Precharge Time 60 RAS to CAS Delay 60 Read Around Write 60 Serial Ports 63 Connectors 32 SMART Monitoring 55 SMBus Connector 38, 41 Support CD 75 Applications 76 Installation Menu 75 Suspend Mode 68 System Chipset 8 System Date 52 System Memory DIMMs 23 Installation 24 SDRAM 23 System Start Up 43 System Time 52 System/PCI Frequency 58
Wake-On-LAN Connector 35 Wake-On-Ring Connector 35 Windows 98 First Time Installation 75
Thermal Sensor Connector 39, 42

UARTUltra DMA Mode 55

NOTES INDEX