DFI K6XV3+ User manual

K6XV3+
Rev. A+
System Board
Users Manual
38700901

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. © 1999
Trademarks
Microsoft®MS-DOS®,WindowsTM ,Windows®95 and Windows®98
are registered trademarks of Microsoft Corporation. Intel and Pentium
are registered trademarks of Intel Corporation. Cyrix 6x86, 6x86L,
6x86MX and M II are registered trademarks of Cyrix Corporation.AMD
K5,K6 and K6-2 are registered trademarks ofAdvanced Micro Devices,
Inc. IBM is a registered trademark of International Business Machine
Corporation.IDT C6 andWINCHIP2 are registered trademarks of IDT
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 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 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 of the Processors ............................................
2.4 Jumper Settings for Clearing CMOS Data. ...................................
2.5 Jumper Settings for SDRAM Clock (DIMM) ................................
2.6 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 .....................................................................
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10
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28
32
36
38
41
43
43
43
47
47
48
49
49
11
12
12
17
18
19

57
57
59
Chapter 4 - Supported Softwares
4.1 Desktop Management Interface .........................................................
4.2 System Health Monitor Utility...............................................................
4.3 Drivers ...............................................................................................................
Appendix A - Identifying Processors
A.1 Intel Processors.............................................................................................
A.2 Cyrix Processors ..........................................................................................
A.3 IBM Processors .............................................................................................
A.4 AMD Processors .........................................................................................
A.5 IDT Processors .............................................................................................
Appendix B - System Error Messages
B.1 POST Beep .....................................................................................................
B.2 Error Messages ..............................................................................................
Appendix C - Troubleshooting
C.1 Troubleshooting Checklist ........................................................................
50
53
54
55
55
56
56
56

6
1.1 Features and Specifications
1.1.1 Features
Chipset
 VIAApollo MVP3 AGP system chipset
Processor
The system board is equipped with a switching voltage regulator
that supports 2.0V to 3.5V core voltage for various processors.
 Intel Pentium90/100/120/133/150/166/200MHz and Intel
Pentium processor with MMXTM technology-166/200/233MHz
 Cyrix6x86L PR150+/PR166+/PR200+, 6x86MX-PR166/
PR200/PR233/PR266 and M II-300/333/350/400
 IBM6x86MX-PR200/PR233/PR266/PR300/PR333
 AMDK5 PR90/PR100/PR120/PR133/PR166, K6-166/200/233/
266/300 and K6-2/250/266/300/333/350/366/380/400
 IDTC6-180/200/225/240 and WINCHIP2-200/225/240/266/
300
System Memory
 16MB to 384MB memory using unbuffered DIMMs
 Three 168-pin DIMM sockets using x64 or x72 SDRAM, 3.3V
 PC-100 SDRAM DIMM for 100MHz external system bus clock
processors
 ECC supported (uses x72 PC SDRAM DIMM)
Chapter 1 - Introduction
DIMMs
2MBx64/x72
4MBx64/x72
8MBx64/x72
16MBx64/x72
Memory Size
16MB
32MB
64MB
128MB

7
1
Introduction
Level 2 Cache Memory
 512KB or 1MB pipeline burst, direct map write-back cache
installed on the system board.
Expansion Slots
The system board is equipped with 1 dedicated AGP slot, 3
dedicated PCI slots, 2 dedicated 16-bit ISA slots and 1 shared PCI/
ISA slot. All PCI and ISA slots are bus masters.
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.
ATX Double Deck Ports
 2 USB ports
 2 DB-9 serial ports
 1 DB-25 parallel port
 1 PS/2 mouse port
 1 PS/2 keyboard port
Connectors
 1 connector for IrDA interface
 2 IDE connectors
 1 floppy connector
 1 20-pin ATX power supply connector
 2 fan connectors for CPU 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.)

8
Introduction
1
 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 infrared peripheral devices that meet the ASKIR or HPSIR
standard.
USB Ports
The system board is equipped with two 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
Monitors Processor Temperature and Overheat Alarm
The system board is able to detect the temperature of the
processor. An alarm will sound in case of processor overheat.
Monitors Processor/AGP Fan Speed and Failure Alarm
The system board is able to detect the fan speed (RPM-Revolutions
Per Minute) of the processor and AGP fans, and alerts you to attend
to any irregularity that may damage your system.
Monitors Power Voltages and Failure Alarm
The system board is able to detect the output voltage of the power
supply. An alarm will sound warning you of voltage irregularity.

9
1
Introduction
Automatic Fan Control
With the systems power switched on, the processors fan will rotate
only if the temperature of the processor is over 25oC.
Dual Function Power Button
Depending on the setting in the BIOS setup, this switch will allow
your system to enter the Soft-Off or Suspend mode.
External Modem Ring-on
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. If you are using
this function, make sure to turn on the power of the modem
prior to powering-off the system.
RTC Timer to Power-on the System
The RTC installed on the system board allows your system to
automatically power-on on the set date and time.
ACPI
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.

10
Introduction
1
1.2 Package Checklist
The system board package contains the following items:
þThe system board
þA users manual
þOne 40-pin IDE hard disk cable
þOne 34-pin floppy disk drive cable
þOne CD
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.

11
2.1 System Board Layout
Chapter 2 - Hardware Installation

12
2Hardware Installation
2.2 System Memory
2.3 DIP Switch and Jumper Settings of the
Processors
Make sure SW1, SW2 and JP8 are set correctly before applying
power or you may damage the processor or system board. There
are 4 switches on SW1 and 6 switches on SW2.The black rectangle
in the diagram denotes the part that is protruding, the adjustable
switch.
In the example above:
Switch 1: Off Switch 4: On
Switch 2: On Switch 5: On
Switch 3: On Switch 6: Off

13
2
Hardware Installation
DIP Switch Settings for Cyrix Processors
DIP Switch Settings for Intel Processors
Cyrix Processors SW2: 1-6 Cyrix Processors SW2: 1-6
6x86MX-PR200 -
66MHz - 2.5x
6x86MX-PR233 -
75MHz - 2.5x
6x86MX-PR266 -
83MHz - 2.5x
M II-300 -
75MHz - 3x
M II-333 -
83MHz - 3x
M II-350 -
100MHz - 3x
M II-400 -
100MHz - 3.5x
M II-300 -
66MHz - 3.5x
6x86L PR150+ -
60MHz - 2x
6x86L PR166+ -
66MHz - 2x
6x86MX-PR166 -
60MHz - 2.5x
6x86L PR200+ -
75MHz - 2x
Intel Processors SW2: 1-6
90MHz -
60MHz - 1.5x
100MHz -
66MHz - 1.5x
120MHz -
60MHz - 2x
133MHz -
66MHz - 2x
150MHz -
60MHz - 2.5x
166MHz -
66MHz - 2.5x
200MHz -
66MHz - 3x
MMX166MHz* -
66MHz - 2.5x
MMX200MHz -
66MHz - 3x
MMX233MHz -
66MHz - 3.5x
Intel Processors SW2: 1-6
* Default

14
2Hardware Installation
DIP Switch Settings for AMD Processors
AMD Processors SW2: 1-6 AMD Processors SW2: 1-6
K6-200 -
66MHz - 3x
K6-233 -
66MHz - 3.5x
K6-2/250 -
100MHz - 2.5x
K6-2/266 -
66MHz - 4x
K5 PR90 -
60MHz - 1.5x
K5 PR100 -
66MHz - 1.5x
K5 PR120 -
60MHz - 2x
K5 PR133 -
66MHz - 2x
K5 PR166 -
66MHz - 2.5x
K6-166 -
66MHz - 2.5x
K6-266 -
66MHz - 4x
K6-2/400 -
100MHz - 4x
K6-2/380 -
95MHz - 4x
K6-2/366 -
66MHz - 5.5x
K6-2/350 -
100MHz - 3.5x
K6-2/333 -
95MHz - 3.5x
K6-2/300 -
100MHz - 3x
K6-2/333 -
66MHz - 5x
K6-300 -
66MHz - 4.5x
K6-2/300 -
66MHz - 4.5x

15
2
Hardware Installation
External System Bus Clock / Frequency Ratio - DIP Switch Settings
If the processor you are using is not included in the previous
tables, please refer to the tables below and set SW2 according
to the external system bus clock and frequency ratio of your
processor.
Frequency Ratio SW2: 1-3
1.5x / 3.5x
Frequency Ratio SW2: 1-3
2x
2.5x
4x
4.5x
5x
3x 5.5x
DIP Switch Settings for IDT Processors
C6-180 - 60MHz - 3x
C6-200 - 66MHz - 3x
WINCHIP2-200 -
66MHz - 3x
IDT Processors SW2: 1-6 IDT Processors SW2: 1-6
C6-225 - 75MHz - 3x
WINCHIP2-225 -
75MHz - 3x
WINCHIP2-266 -
83MHz - 3x
C6-240 - 60MHz - 4x
WINCHIP2-240 -
60MHz - 4x
WINCHIP2-300 -
100MHz - 3x
DIP Switch Settings for IBM Processors
IBM Processors SW2: 1-6 IBM Processors SW2: 1-6
6x86MX-PR200 -
66MHz - 2.5x
6x86MX-PR233 -
75MHz - 2.5x
6x86MX-PR266 -
83MHz - 2.5x
6x86MX-PR300 -
75MHz - 3x
6x86MX-PR333 -
83MHz - 3x
6x86MX-PR300 -
66MHz - 3.5x

16
2Hardware Installation
DIP Switch and Jumper Settings for Core Voltage
External System Bus Clock SW2: 4-6 External System Bus Clock SW2: 4-6
60MHz 83MHz
66MHz 95MHz
75MHz 100MHz
Voltage JP8 SW1
2.8V
2.0V
2.1V 2.9V
3.0V
3.1V
Voltage JP8 SW1
2.2V
2.3V
2.4V
2.5V
2.6V
2.7V
3.2V
3.3V
3.4V
3.5V
Warning:
We do not guarantee that 75MHz, 83MHz, 95MHz and 100MHz
external system bus clock processors will work with all types of add-in
cards, DIMM modules or other devices.

17
2
Hardware Installation
2-3 On:
Normal (default)
1-2 On:
Clear CMOS Data
2.4 Jumper Settings for Clearing CMOS Data
Jumper JP9
Clear CMOS Data
If, for some reason, the CMOS data
becomes corrupted, 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. Set JP9
pins 1 and 2 to On. Wait for a few
seconds and set JP9 back to its default
setting, pins 2 and 3 On. You may now
plug the power cord and power-on
your system.
123123

18
2Hardware Installation
2.5 Jumper Settings for SDRAM Clock (DIMM)
Jumper JP30
SDRAM Clock
JP30 is used to set the SDRAMs clock
according to the CPU clock or AGP
clock. If you are using PC-100 SDRAM
DIMMs, it is recommended that you
set the SDRAM clock according to the
CPU clock (2-3 On). This setting will
provide better system performance
specially when used with 75/83/95/
100MHz processors. However, if you
encounter compatibility problems with
PC-100 SDRAM DIMMs or you are
using EDO/PC-66 SDRAM DIMMs, set
the SDRAM clock according to the
AGP clock (1-2 On).
2-3 On:
SDRAM CLK = CPU CLK
1-2 On:
SDRAM CLK = AGP CLK
(default)
123123
CPU CLK
60MHz
66MHz
75MHz
83MHz
95MHz
100MHz
SDRAM CLK
60MHz
66MHz
60MHz
66MHz
66MHz
66MHz
AGP CLK
60MHz
66MHz
60MHz
66MHz
66MHz
66MHz
CPU CLK
60MHz
66MHz
75MHz
83MHz
95MHz
100MHz
SDRAM CLK
60MHz
66MHz
75MHz
83MHz
95MHz
100MHz
AGP CLK
60MHz
66MHz
60MHz
66MHz
66MHz
66MHz

19
2
Hardware Installation
2.6 Connecting the Ribbon Cables and Wires
of the Ports and Connectors
2.6.1 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 ports I/O address in the
Integrated Peripherals setup of the
Award BIOS.
2.6.2 PS/2 Mouse Port
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 or
keyboard. Failure to do so may
damage the system board.

20
2Hardware Installation
2.6.3 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.
1. Install the 34-pin header connector
into the shrouded floppy disk header
(J4) on the system board. The
colored edge of the ribbon should
be aligned with pin 1 of J4.
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.
2.6.4 Floppy Disk Drive Controller