This publication, including all photographs, illustrations and software, is protected under international copyright laws, with all rights reserved. Neither this manual, nor any of the material contained herein, may be reproduced without the express written consent of the manufacturer. The information in this document is subject to change without notice. The manufacturer makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Further, the manufacturer reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of the manufacturer to notify any person of such revision or changes.

Trademarks

IBM, VGA, OS/2, and PS/2 are registered trademarks of International Business Machines. Intel, Pentium, Pentium-II, Pentium-III, MMX, and Celeron are registered trademarks of Intel Corporation. Microsoft, MS-DOS and Windows 95/98/NT are registered trademarks of Microsoft Corporation. Sound Blaster is a trademark of Creative Technology Ltd. PC-cillin and ChipAwayVirus are trademarks of Trend Micro Inc. AMI is a trademark of American Megatrends Inc. A3D is a registered trademark of Aureal Inc. Gamut is a registered trademark of Formosoft International Inc. SuperVoice is a registered trademark of Pacific Image Communications Inc. MediaRing Talk is a registered trademark of MediaRing Inc. WordPerfect is a registered trademark of Corel Corporation Ltd. Other names used in this publication may be trademarks and are acknowledged. Copyright 1999 All Rights Reserved MS7381SGM, V1.2 S6T/Aug 1999
Federal Communications Commission (FCC)
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: ! Reorient or relocate the receiving antenna. ! Increase the separation between the equipment and the receiver. ! Connect the equipment onto an outlet on a circuit different from that to which the receiver is connected. ! Consult the dealer or an experienced radio/TV technician for help. Shielded interconnect cables and shielded AC power cable must be employed with this equipment to insure compliance with the pertinent RF emission limits governing this device. Changes or modifications not expressly approved by the systems manufacturer could void the users authority to operate the equipment.
Declaration of Conformity
This device complies with part 15 of the FCC rules. Operation is subject to the following conditions: ! This device may not cause harmful interference, and ! This device must accept any interference received, including interference that may cause undesired operation.
Canadian Department of Communications
This class B digital apparatus meets all requirements of the Canadian Interference-causing Equipment Regulations. Cet appareil numrique de la classe B respecte toutes les exigences du Rglement sur le matriel brouilieur du Canada.

Table of Contents

Chapter 1 Introduction... 1

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Chapter 3

BIOS Setup

The BIOS setup utility stores information about your computer such as the date and time, the kind of hardware you have installed, and so on. Your computer uses this information to initialize all the components at boot up time, and make sure that everything runs smoothly. If the information in the setup utility is incorrect, it may cause your system to malfunction. It can even stop your computer from booting properly. If this happens, you can use the clear CMOS jumper to clear the CMOS memory area that is used to store the setup information, or you can hold down the End key while you reboot your computer, Holding down the End key also clears the setup information. You can run the setup utility and manually make changes to the setup utility. You might need to do this to configure some of the hardware that you add to the mainboard, such as the CPU, the memory, disk drive, etc.
Running the Setup Utility
Each time your computer starts, before the operating system is booted, a message appears on the screen that prompts Hit <DEL> if you want to run SETUP. When you see this message, press the Delete key and the Mainmenu page of the setup utility appears on your monitor.
You can use the cursor arrow keys to highlight any of the options on the Mainmenu page. Press Enter to select the highlighted option. To leave the setup utility, press the Escape key. Hold down the Shift key and press F2 to cycle through the optional color schemes of the setup utility. Some of the options on the Mainmenu page lead to tables of items with installed values. In these pages, use the cursor arrow keys to highlight the items, and then use the PgUp and PgDn keys to cycle through the alternate values for each of the items. Other options on the Mainmenu page lead to dialog boxes which require you to answer Yes or No by hitting the Y or N keys. If you have already made changes to the setup utility, press F10 to save those changes and exit the utility. Press F5 to reset the changes to the original values. Press F6 to install the setup utility 28

with a set of default values. Press F7 to install the setup utility with a set of high-performance values.

Standard CMOS Setup Page

Use this page to set basic information such as the date and time, the IDE devices, and the diskette drives. If you press the F3 key, the system will automatically detect and configure the hard disks on the IDE channels.
Date & Time Pri Master Pri Slave Sec Master Sec Slave
Use these items to install your system with the correct date and time Use these items to configure devices on the primary and secondary IDE channels. To configure a hard disk drive, choose Auto. If the Auto setting fails to find a hard disk drive, set it to User, and then fill in the hard disk characteristics (Size, Cyls, etc.) manually. If you have a CDROM drive, select the setting CDROM. If you have an ATAPI device with removable media (e.g. a ZIP drive or an LS-120) select ARMD. Use these items to set the size and capacity of the floppy diskette drive(s) installed in the system.
Floppy Drive A Floppy Drive B

Advanced Setup Page

Use this page to set more advanced information about your system. Take some care with this page. Making changes can affect the operation of your computer.
Share Memory Size Trend ChipAway Virus 1st Boot Device 2nd Boot Device Try Other Boot Device S.M.A.R.T. for Hard Disks BootUp NumLock Floppy Drive Swap
This item lets you allocate a portion of the main memory for use by the onboard VGA system. This mainboard has built-in virus protection in the firmware. Use this item to enable or disable the built-in virus protection. Use these two items to determine the order and priority that your computer follows to load an operating system at start-up time. If you enable this item, the system will also search for other boot devices if it fails to find an operating system from the first two locations. Enable this item if your hard disk(s) supports SMART (Self-Monitoring, Analysis and Reporting Technology). This items determines if the Num Lock key is active or inactive at system start-up time. If you have two diskette drives installed and you enable this item, drive A becomes drive B and drive B becomes drive A.

Floppy Drive Seek Password Check
If you enable this item, your system will check the diskette drives at start up time. Disable this item unless you are using an old 360K diskette drive. If you have installed a password on your system, use this item to determine if the password is required to enter the setup utility (Setup) or required at start-up time and to enter the setup utility (Always). Enable this item if you are booting the OS/2 operating system and you have more than 64MB of memory installed. Leave this item enabled since all the processors that can be installed on this board have internal cache memory. If you enable this item, a segment of the system BIOS will be cached to main memory for faster execution. This item determines the speed of the installed SDRAM main memory. We recommend that you leave this item at the default value. This item determines the operation of the memory refresh timing. We recommend that you leave this item at the default value. This item determines the operation of the main memory CAS (column address strobe). We recommend that you leave this item at the default value. This item determines the operation of the onboard graphics adapter. We recommend that you leave this item at the default value.
Boot to OS/2 Over 64MB Internal Cache System BIOS Cacheable SDRAM Speed Refresh Queue Depth SDRAM CAS Latency Graphic Win Size
Power Management Setup Page
This page sets some of the parameters for the system power management operation.
Power Management/APM Standby Time Out (Minute) Suspend Time Out (Minute) Keyboard Power On
Use this item to enable or disable the power management routines. If you enable the power management, you can use the items below to set the power management operation. This sets the timeout for standby mode in minutes. If the time selected passes without any system activity, the computer will enter the power-saving standby mode. This sets the timeout for suspend mode in minutes. If the time selected passes without any system activity, the computer will enter the power-saving suspend mode. Your system can enter a software power down. If you enable this item, you can resume the system by pressing hot keys on the keyboard. You must be using an ATX power supply and enable jumper JP1 in order to use this feature.

Lan Card Power On

Your system can enter a software power down. If you enable this item, the system can automatically resume if there is traffic on the built-in network adapter. You must have an ATX power supply in order to use this feature. Your system can enter a software power down. If you enable this item, the system can automatically resume if there is an incoming call on the built-in fax/modem. You must have an ATX power supply in order to use this feature. Your system can enter a software power down. If you enable this item, the system can automatically resume at a fixed time on the systems RTC (realtime clock). Use the items below to set the date and time of the wake-up alarm. You must have an ATX power supply in order to use this feature.

Ring On Power On

RTC Alarm Power On
PCI / Plug and Play Setup Page
This page sets some of the parameters for devices installed on the system PCI bus, and devices that use the system plug and play capability.

Plug and Play Aware O/S

Enable this item if you are using an O/S that supports Plug and Play such as Windows 95 or 98.
Primary Graphics Adapter PCI VGA Palette Snoop Allocate IRQ to PCI VGA DMA Reserved for ISA IRQ Reserved for ISA Reserved Memory Size Reserved Memory Address
Use this item to define if your primary graphics adapter is installed in a PCI slot or on an AGP bus. When this item is enabled, multiple VGA devices operating on different buses can handle data from the CPU on each set of palette registers on every video device. If this item is enabled, an IRQ will be assigned to the PCI VGA graphics system. We recommend that you set this value to No. If you set it to a DMA, the channel will be reserved for an installed non-PnP ISA or EISA expansion card. If you set it to an IRQ, the IRQ line will be reserved for an installed non-PnP ISA or EISA expansion card. This item lets you reserve a block of memory for any device that requires it. This item lets you set the address for any block of memory that has been reserved.

Load Optimal Settings

If you select this item and press Enter a dialog box appears. If you press Y, and then Enter, the setup utility is loaded with a set of optimal default values. The optimal default values are not very demanding and they should allow your system to function with most kinds of hardware and memory chips.
Load Best Performance Settings
If you select this item and press Enter a dialog box appears. If you press Y, and then Enter, the setup utility is loaded with a set of best-performance default values. The optimal default values are quite demanding and your system might not function properly if you are using slower memory chips or other kinds of lowperformance components.

Features Setup Page

This page sets some of the parameters for peripheral devices installed on the system.

Onboard FDC Onboard Serial Port1 Onboard IR Port
Use this item to enable or disable the onboard floppy disk drive interface. Use this item to enable or disable the onboard serial port COM1, and to assign a port address Use this item to define the protocol for an infrared port if you have installed an optional IR port. Use this item to define if the optional infrared port is full-duplex or half-duplex. Use this item to enable or disable the onboard parallel port LPT1, and to assign a port address Use this item to determine the parallel port mode. You can select Normal, ECP (Extended Capabilities Port), EPP (Enhanced Parallel Port), or ECP + EPP. Use this item to assign an IRQ to the parallel port. Use this item to assign a DMA channel to the parallel port.
IR Duplex Onboard Parallel Port Parallel Port Mode
Parallel Port IRQ Parallel Port DMA
Onboard IDE Ultra DMA Support
Use this item to enable or disable either of the two onboard IDE channels, Primary or Secondary. Use this item to determine if you require Ultra DMA support for IDE devices on the primary or secondary IDE channels. Enable this item if you plan to use the USB ports that are integrated on this mainboard. Enable this item if you plan to use the USB ports that are integrated on this mainboard in the DOS environment.
USB Function USB Function for DOS

CPU PnP Setup Page

This page lets you manually configure the mainboard for the CPU. The system will automatically detect the kind of CPU that you have installed and make the appropriate adjustments to the items on this page.
CPU Speed CPU Base Frequency
Use this item to set the internal clock speed of your CPU. Use this item to set the system bus frequency that is required by the CPU.

CPU Multiple Factory

Use this item to set a multiplier for the system bus frequency. The multiplier x the system bus frequency must equal the internal clock speed of your CPU, e.g. 100 MHz (system bus) x 3.5 (muliplier) = 350 MHz (internal clock speed of installed CPU). Use this item to set the bus frequency for the memory bus.

SDRAM Frequency

Hardware Monitor Page
This page sets some of the parameters for the hardware monitoring function of this mainboard.
CPU Temperature CPU FAN Speed & Vcore
Use this item to set the threshold temperature for the CPU. The system will alert you if this temperature is exceeded. Use these items to set the parameters for the voltages that control the fans and the CPU core. If the values deviate by an amount greater than the values installed here, the hardware monitoring will alert you with a warning.

Change Password

If you highlight this item and press Enter, a dialog box appears which lets you enter a Supervisor password. You can enter no more than six letters or numbers. Press Enter after you have typed in the password. A second dialog box asks you to retype the password for confirmation. Press Enter after you have retyped it correctly. The password is required at boot time, or when the user enters the setup utility. Change or Remove the Password Highlight this item and type in the current password. At the next dialog box, type in the new password, or just press Enter to disable password protection.
Highlight this item and press Enter to save the changes that you have made in the setup utility and exit the setup program. When the Save and Exit dialog box appears, press Y to save and exit, or press N to exit without saving.

Chapter 4

Software & Applications
The support software CD-ROM that is included in the mainboard package contains all the drivers and utility programs needed to properly run our products. Please check all the README files for the latest information on installing and using the software.
Using the PCI Sound Application
1. Before you install the PCI Sound drivers, make sure your Operating System has been installed, otherwise the PCI Sound might be detected as Other device by the device manager of your OS. 2. After the drivers are properly installed, choose the MULTIMEDIA icon in the CONTROL PANEL when you need to use the Software Wave-Table drivers as a MIDI output device. Select the MIDI page and click on C-media SoftMidi Synthesis (Win98) / Driver (Win95), then click OK to confirm. 3. A Windows application named Audio Rack is provided with the PCI Sound drivers, which gives you control over all the audio functions through a user interface that is as simple to use as a home stereo system. We recommend that you use the System Mixer in the Audio Rack software to control your computers audio volume, recording device and the recording gain. 4. If the devices that you are using require the MIDI port as the control interface, you need to select the MULTIMEDIA icon

in the CONTROL PANEL. Select the MIDI page and click on CM8338 MPU-401 (Win98) or CM8338/C3DX PCI Audio External MIDI Port (Win95), and then click OK to confirm. 5. For more information, refer to the PCI Sound manual in the CD which ships with this mainboard.

The Four Speakers System

The onboard Sound Pro audio system supports 2 wave channels (front/rear) known as the 4 speaker system. If you are running applications which use the DirectSound 3D or A3D audio interface, your system can simulate realistic 3D sound through a 4 speaker setup. Follow the steps below to install a 4-speaker setup. Speaker Installation Connect the front two speakers to the Line-out jack on the sound ports extension bracket. Connect the rear two speakers to the Linein/Rear jack on the sound ports extension bracket. The original Line-in can be moved to Aux. Speaker Position Set up your speakers similar to the following figure to get the best audio result.
Mixer Setup There is a 4-speakers option in the Volume Control of the Mixer when you are setting up the PCI Audio Application. Click on the 4 SPK icon to enable this option. This means that the output to the rear speakers is sent through the Line-in/Rear jack. In order to avoid hardware conflicts, DO NOT enable this option when the Line-in/Rear jack is connected with a line-in device. While the 4 speakers mode is enabled, turn on/off the output of the front speakers and adjust the volume of the speakers so that the front/rear speakers have the same volume. Demo Execute the Helicopter demo in the C3D HRTF Positional Audio Demos of the PCI Audio Application. When you hear the helicopter flying behind you, it means that the rear speakers are working properly.