DFI CB50-V3 User manual

CB50-V3
Rev. A+
System Board
Users Manual
38000849

Copyright
This publication contains information that is protected by copyright.
No part of it may be reproduced in any form or by any means or
used to make any transformation/adaptation without the prior
written permission from the copyright holders.
This publication is provided for informational purposes only. The
manufacturer makes no representations or warranties with respect to
the contents or use of this manual and specifically disclaims any
express or implied warranties of merchantability or fitness for any
particular purpose.The user will assume the entire risk of the use or
the results of the use of this document. Further, the manufacturer
reserves the right to revise this publication and make changes to its
contents at any time, without obligation to notify any person or
entity of such revisions or changes.
All Rights Reserved. © 1998
Trademarks
Microsoft®MS-DOS®, WindowsTM, Windows®95 and Windows®98
are registered trademarks of Microsoft Corporation. Intel®and
CeleronTM are registered trademarks of Intel Corporation. Award is
a registered trademark of Award Software, Inc. Other trademarks
and registered trademarks of products appearing in this manual are
the properties of their respective holders.
Caution:
Danger of explosion if battery incorrectly replaced.
Replace only with the same or equivalent type recommended by the
manufacturer.
Dispose of used batteries according to the battery manufacturers
instructions.

FCC and DOC Statement on Class B
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 when the equipment is operated in a residential
installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with
the instruction manual, 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 tr y 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 into 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.
Notice:
1. The changes or modifications not expressly approved by the
party responsible for compliance could void the user's authority
to operate the equipment.
2. Shielded interface cables must be used in order to comply with
the emission limits.

Table of Contents
Chapter 1 - Introduction
1.1 Features and Specifications..................................................................................
1.2 Package Checklist.........................................................................................................
Chapter 2 - Hardware Installation
2.1 System Board Layout .............................................................................................
2.2 System Memory.............................................................................................................
2.3 DIP Switch Settings for Processors............................................................
2.4 Jumper Settings for the CPUs Front Side Bus................................
2.5 Jumper Settings for Clearing CMOS Data..........................................
2.6 Jumper Settings for Wake-On-Keyboard/Wake-On-Mouse......
2.7 Connecting the Ribbon Cables and Wires of the Ports
and Connectors.............................................................................................................
Chapter 3 - Award BIOS Setup Utility
3.1 The Basic Input/Output System.....................................................................
3.1.1 Standard CMOS Setup....................................................................
3.1.2 BIOS Features Setup..........................................................................
3.1.3 Chipset Features Setup....................................................................
3.1.4 Power Management Setup............................................................
3.1.5 PNP/PCI Configuration....................................................................
3.1.6 Load Fail-Safe Settings......................................................................
3.1.7 Load Optimal Settings......................................................................
3.1.8 Integrated Peripherals.........................................................................
3.1.9 Supervisor Password..........................................................................
3.1.10 User Password.........................................................................................
3.1.11 IDE HDD Auto Detection...........................................................
3.1.12 Save & Exit Setup.................................................................................
3.1.13 Exit Without Saving..............................................................................
Chapter 4 - Supported Softwares
4.1 Desktop Management Interface.....................................................................
4.2 Patch Utility for Windows

95/98...............................................................
6
10
28
28
31
34
36
40
42
42
42
47
47
48
49
49
11
12
12
13
14
15
16
50
53

54
54
56
Appendix A - System Error Messages
A.1 POST Beep.......................................................................................................................
A.2 Error Messages..............................................................................................................
Appendix B - Troubleshooting
B.1 Troubleshooting Checklist....................................................................................

Introduction
1
6
1.1 Features and Specifications
1.1.1 Features
Chipset
 VIA

693/596A AGPset
Processor
The system board is equipped with Intel

Socket 370 for installing
an Intel CeleronTM PPGA processor. It is also equipped with a
switching voltage regulator that automatically detects 1.30V to
2.05V.
 300A/333/366/400/433MHz and future 100MHz FSB CeleronTM
PPGA processor
System Memory
 8MB to 384MB memory using unbuffered DIMMs
 Three 168-pin DIMM sockets
 Uses x64 or x72 PC SDRAM, 3.3V
- PC-66 SDRAM DIMM for 66MHz FSB processors
- PC-100 SDRAM DIMM for 100MHz FSB processors
 ECC supported (uses x72 PC SDRAM DIMM)
Expansion Slots
The system board is equipped with 1 dedicated AGP slot, 3
dedicated PCI slots, 1 dedicated 16-bit ISA slot and 1 shared PCI/
ISA slot. All PCI and ISA slots are bus masters.
Chapter 1 - Introduction
DIMMs
1MBx64/x72
2MBx64/x72
4MBx64/x72
8MBx64/x72
16MBx64/x72
Memory Size
8MB
16MB
32MB
64MB
128MB

1
Introduction
7
Desktop Management Interface (DMI)
The system board comes with a DMI 2.0 built into the BIOS. The
DMI utility in the BIOS automatically records various information
about your system configuration and stores these information in the
DMI pool, which is a part of the system board's Plug and Play
BIOS. DMI, along with the appropriately networked software, is
designed to make inventory, maintenance and troubleshooting of
computer systems easier. Refer to Chapter 4 for instructions on
using the DMI utility.
Connectors
 2 connectors for external USB ports
 1 connector for IrDA interface
 2 serial ports
 1 parallel port
 2 IDE connectors
 1 floppy connector
 1 PS/2 mouse por t
 1 PS/2 or AT keyboard port
 1 20-pin ATX power supply connector
 1 12-pin standard AT power supply connector
 1 Wake-On-LAN connector
 1 SB-LINK connector
 3 fan connectors for CPU, chassis and AGP fans
PCI Bus Master IDE Controller
 Two PCI IDE interfaces support up to four IDE devices
 Ultra DMA/33 supported (Synchronous Ultra DMA mode -
data transfer rate up to a maximum of 33MB/sec.)
 PIO Mode 3 and Mode 4 Enhanced IDE (data transfer rate up
to 16.6MB/sec.)
 Bus mastering reduces CPU utilization during disk transfer
 ATAPI CD-ROM, LS-120 and ZIP supported
IrDA Interface
The system board is equipped with an IrDA connector for wireless
connectivity between your computer and peripheral devices. It
supports peripheral devices that meet the IrDA or ASK IR standard.

Introduction
1
8
USB Ports
The system board is equipped with a header for external USB ports.
USB allows data exchange between your computer and a wide
range of simultaneously accessible external Plug and Play peripherals.
BIOS
 Award BIOS, Windows

95 Plug and Play compatible
 Flash EPROM for easy BIOS upgrades
1.1.2 Intelligence
Automatic CPU/Chassis Fan Off
The CPU and chassis fans will automatically turn off once the system
enters the Suspend mode.
Dual Function Power Button (ATX power supply only)
Depending on the setting in the BIOS setup, this switch will allow
the system to enter the Soft-Off or Suspend mode.
External Modem Ring-on (ATX power supply only)
The Modem Ring-on feature allows the system that is in the
Suspend mode or Soft Power Off mode to wake-up/power-on to
respond to incoming calls.
Note:
This feature supports external modem only.
RTC Timer to Power-on the System (ATX power supply only)
The RTC installed on the system board allows your system to
automatically power-on on the set date and time.

1
Introduction
9
Wake-On-LAN Ready (ATX power supply only)
The Wake-On-LAN function allows the network to remotely wake
up a Soft Power Down (Soft-Off) PC.Your LAN card must support
the remote wakeup function.
Important:
The 5VSB power source of your power supply must support
≥ 720mA (minimum).
Wake-On-Keyboard/Wake-On-Mouse (ATX power supply only)
This function allows you to use the keyboard or mouse to power-on
the system. Refer to Jumper Settings for Wake-On-Keyboard/Wake-
On-Mouse in Chapter 2 and Keyboard/Mouse Power On in the
Integrated Peripherals setup of the Award BIOS in Chapter 3 for
more information.
Important:
 The power button will not function once a keyboard
password has been set in the KB Power On Password
field of the Integrated Peripherals setup. You must type the
correct password to power-on the system.
 The 5VSB power source of your power supply must
support ≥ 720mA (minimum).
ACPI (ATX power supply only)
The system board is designed to meet the ACPI (Advanced
Configuration and Power Interface) specification. ACPI has energy
saving features that enables PCs to implement Power Management
and Plug-and-Play with operating systems that support OS Direct
Power Management.
Virus Protection
Most viruses today destroy data stored in hard drives. The system
board is designed to protect the boot sector and partition table of
your hard disk drive.

Introduction
1
10
1.2 Package Checklist
The system board package contains the following items:
þThe system board
þA users manual
þSerial, mouse and printer port cables
Option 1:
- One card-edge bracket with a 9-pin and 25-pin serial port
cables
- One card-edge bracket with a 25-pin printer port cable and
a PS/2 mouse port cable
Option 2:
- One card-edge bracket with two 9-pin serial port cables
and a PS/2 mouse port cable
- One 25-pin printer port cable for chassis mounting
þOne 40-pin IDE hard disk cable
þOne 34-pin floppy disk drive cable
þOne CD
¨One card-edge bracket with two USB ports (optional)
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.

2
Hardware Installation
11
2.1 System Board Layout
Chapter 2 - Hardware Installation

2
12
Hardware Installation
2.3 DIP Switch Settings for Processors
(For Factory Use Only)
The table on the next page shows the supported processors and
their corresponding DIP switch settings (SW1).There are 4 switches
on SW1.The black rectangle in the diagram denotes the part that is
protruding, the adjustable switch. Make sure SW1 is set correctly
before applying power, otherwise you will not be able to power-on
the system.
In the example above:
Switch 1: Off
Switch 2: On
Switch 3: Off
Switch 4: On
2.2 System Memory

2
Hardware Installation
13
2.4 Jumper Settings for the CPUs Front Side Bus
Jumper JP2
CPUs Front Side Bus Select
The default setting of jumper
JP2 is Auto - the system will
automatically run according to
the FSB of the processor. The
100MHz setting (1-2-3 Off)
is reserved for future 100MHz
FSB processors. Refer to the
figure on the next page.
Warning:
If your system is
installed with a 66MHz
FSB processor, do not
move the jumper cap from its default setting which is pins 1
and 2 On; otherwise your system will not boot.
Note:
1. Intel CeleronTM PPGA processors support VID (Voltage Identification).
The switching voltage regulator on the system board will
automatically set the voltage regulator according to the voltage of
the processor.
2. You cannot overclock an Intel CeleronTM PPGA processor because its
frequency ratio has been fixed by the manufacturer. The table
above is for factory use only.
300MHz 4.5x
333MHz 5x
Processor SW1
66MHz 100MHz
Frequency
Ratio
Future
processor 5.5x
Processor SW1
66MHz 100MHz
Frequency
Ratio
400MHz Future
processor
433MHz Future
processor
Future
processor
Future
processor
Future
processor
Future
processor
6x
6.5x
7x
7.5x
8x
Future
processor
Future
processor
366MHz
Future
processor
Future
processor

2
14
Hardware Installation
2.5 Jumper Settings for Clearing CMOS Data
Jumper JP6
Clear CMOS Data
If, for some reason, the CMOS
data becomes corrupted or
you forgot the supervisor/user/
keyboard password, the
system can be reconfigured
with the default values stored
in the ROM BIOS. To load the
default values, power off your
system and unplug the power
cord. If you are using an AT
power supply, you do not
need to unplug the power
cord. Set JP6 pins 2 and 3 to On. Wait for a few seconds and set
JP6 back to its default setting, pins 1 and 2 On. You may now plug
the power cord and power-on your system.
2-3 On:
Clear CMOS Data
1-2 On: Normal
(default)
Jumper JP2s settings are shown below.
2-3 On: 66MHz1-2 On: Auto
(default)
1-2-3 Off: 100MHz
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3

2
Hardware Installation
15
2.6 Jumper Settings for Wake-On-Keyboard/
Wake-On-Mouse (ATX power supply only)
Jumper JP1
Wake-On-Keyboard/Wake-On-Mouse
The system board supports
the Wake-On-Keyboard/Wake-
On-Mouse function. This
function allows you to use the
keyboard or mouse to power-
on the system. By default, JP1 is
disabled. To use this function,
set JP1 to 2-3 On. Keyboard/
Mouse Power On in the
Integrated Peripherals setup of
the Award BIOS must be set
accordingly. Refer to chapter 3
for details.
Warning:
1. If JP1 was previously enabled with a password set in the
KB Power On Password field, and now you wish to disable
the Wake-On-Keyboard (password) function, make sure to
set the Keyboard/Mouse Power On field to Disabled prior
to setting JP1 to disabled. You will not be able to boot up
the system if you fail to do so.
2. The power button will not function once a keyboard
password has been set in the KB Power On Password
field of the Integrated Peripherals setup. You must type the
correct password to power-on the system.
3. The 5VSB power source of your power supply must
support ≥ 720mA (minimum).
2-3 On: Enable1-2 On: Disable
(default)
321 32 1

2
16
Hardware Installation
2.7 Connecting the Ribbon Cables and Wires of
the Ports and Connectors
2.7.1 Serial Ports
The built-in serial ports are RS-232C asynchronous communication
ports with 16C550A-compatible UARTs that can be used with
modems, serial printers, remote display terminals, and other serial
devices. You can set the serial por ts I/O address in the Integrated
Peripherals setup of the Award BIOS.
Connecting the Serial Ports
Two serial port cables mounted on
a card-edge bracket are provided
with the system board. Connect
one serial port cable to connector
JP4 for COM 1 primary serial port
and the other serial port cable to
connector JP3 for the COM 2
secondary serial por t. Make sure
the colored stripes on the ribbon
cables are aligned with pins 1 of
connectors JP3 and JP4. Mount the
card-edge bracket to the system
chassis.

2
Hardware Installation
17
2.7.2 PS/2 Mouse Port
The PS/2 mouse port is a 6-pin connector on the system board.
Attach the 6-pin mouse port cable, which is mounted on a card-
edge bracket, to connector J2. Make sure the red wire on the PS/2
mouse connector is aligned with pin 1 of connector J2. Mount the
card-edge bracket to the system chassis.
The PS/2 mouse port uses IRQ12. If a mouse is not connected to
this port, the system will reserve IRQ12 for other expansion cards.
Warning:
Make sure to turn off your computer prior to connecting or
disconnecting a mouse. Failure to do so may damage the
system board.
Pin
1
2
3
4
5
6
Function
Mouse Data
Reserved
Ground
+5V
Mouse Clock
Reserved

2
18
Hardware Installation
2.7.3 Parallel Port
The system board has a standard printer port for interfacing your
PC to a parallel printer. It supports SPP, ECP and EPP modes. You
can set the ports mode in the Integrated Peripherals setup of the
Award BIOS.
Connecting the Parallel Printer Port
Attach the DB-25 printer port
cable to connector JP5 on the
system board. Make sure the
colored stripe on the ribbon
cable aligns with pin 1 of JP5.
Use a small nutdriver to
mount the cable into a DB-25
cutout in the system chassis. If
your printer port cable is
attached to a card-edge
bracket, connect the cable to
connector JP5 on the system
board and mount the card-edge bracket to the system chassis.
2.7.4 Floppy Disk Controller
1. Install the 34-pin header
connector into the
shrouded floppy disk
header (J10) on the system
board.The colored edge of
the ribbon should be
aligned with pin 1 of J10.
2. Install the other 34-pin
header connector(s) into
the disk drive(s). Align the
colored edge of the daisy
chained ribbon cable with
pin 1 of the drive edge connector(s). The end-most connector
should be attached to the drive you want to designate as Drive
A.

2
Hardware Installation
19
2.7.5 IDE Hard Disk Interface
1. If you are connecting
two hard drives, install
the 40-pin connector
of the IDE cable into
the primary shrouded
IDE header (connector
J8). If you are adding a
third or fourth IDE
device, install the 40-
pin connector of the
other IDE cable into
the secondary shrouded
IDE header (connector J7).
2. Install the other 40-pin header connector(s) into the device with
the colored edge of the ribbon cable aligned with pin 1 of the
drive edge connector(s).
Note:
Refer to your disk drive users manual for information about
selecting proper drive switch settings.
Adding a Second IDE Hard Drive
When using two IDE drives, one must be set as the master and the
other as the slave. Follow the instructions provided by the drive
manufacturer for setting the jumpers and/or switches on the drives.
We recommend that you use Enhanced IDE or ATA-2, ATA-3 and
Ultra DMA hard drives be from the same manufacturer. In a few
cases, drives from two different manufacturers will not function
properly when used together. The problem lies in the hard drives, not
the system board.
Important:
If you encountered problems while using an ATAPI CD-ROM
drive that is set in Master mode, please set the CD-ROM drive
to Slave mode. Some ATAPI CD-ROMs may not be recognized
and cannot be used if incorrectly set in Master mode.

2
20
Hardware Installation
2.7.6 USB Ports
The system board is equipped with a header at location J11 on the
system board, for external USB ports. USB allows data exchange
between your computer and a wide range of simultaneously
accessible external Plug and Play peripherals.
You must have the proper drivers installed in your operating system
to use these ports. Refer to your operating systems manual or
documentation.
Connecting the USB Ports
As an option, one card-edge bracket mounted with two USB port
cables may be provided with the system board. The ends of the
cables are attached to a connector. Connect the USB cable
connector to J11 on the system board.The USB port cables can be
inserted only if pin 1 of the cable (red wire) is aligned with pin 1 of
J11. Pin 9 of J11 has been removed and the hole in the USB cable
connector, which corresponds to pin 9, has been plugged to prevent
incorrectly inserting the connector. Mount the card-edge bracket to
the system chassis.
Pin
1
3
5
7
9
Function
+5V
-Data
+Data
Ground
Key
Function
+5V
-Data
+Data
Ground
Ground
Pin
2
4
6
8
10