Abit VL6 User manual

Copyright and Warranty Notice
The information in this document is subject to change without notice and does not
represent a commitment on part of the vendor, who assumes no liability or
responsibility for any errors that may appear in this manual.
No warranty or representation, either expressed or implied, is made with respect to
the quality, accuracy or fitness for any particular part of this document. In no event
shall the manufacturer be liable for direct, indirect, special, incidental or
consequential damages arising from any defect or error in this manual or product.
Product names appearing in this manual are for identification purpose only and
trademarks and product names or brand names appearing in this document are the
property of their respective owners.
This document contains materials protected under International Copyright Laws. All
rights reserved. No part of this manual may be reproduced, transmitted or
transcribed without the expressed written permission of the manufacturer and
authors of this manual.
If you do not properly set the motherboard settings causing the motherboard to
malfunction or fail, we cannot guarantee any responsibility.

MN-209-2A0-71 Rev. 1.00
VL6 Motherboard User’s Manual
Index
CHAPTER 1. INTRODUCTION OF VL6 FEATURES ............ 1-1
1-1. FEATURES OF THIS MOTHERBOARD ........................................ 1-1
1-2. SPECIFICATIONS ...................................................................... 1-2
1-3. LAYOUT DIAGRAM.................................................................. 1-3
1-4. THE SYSTEM BLOCK DIAGRAM............................................... 1-4
CHAPTER 2. INSTALLING THE MOTHERBOARD.............. 2-1
2-1. INSTALLING THE MOTHERBOARD TO THE CHASSIS ................. 2-1
2-2. INSTALLATION OF THE INTEL®CELERON™ (PPGA & FC-PGA) &
PENTIUM®III (FC-PGA) PROCESSORS .................................... 2-2
2-3. INSTALLING SYSTEM MEMORY ............................................... 2-3
2-4. CONNECTORS, HEADERS AND SWITCHES ................................ 2-4
CHAPTER 3. INTRODUCING THE BIOS ................................ 3-1
3-1. CPU SETUP [SOFT MENU™II] ............................................. 3-3
3-2. STANDARD CMOS FEATURES SETUP MENU ........................... 3-7
3-3. ADVANCED BIOS FEATURES SETUP MENU .......................... 3-11
3-4. ADVANCED CHIPSET FEATURES SETUP MENU ...................... 3-15
3-5. INTEGRATED PERIPHERALS ................................................... 3-19
3-6. POWER MANAGEMENT SETUP MENU .................................... 3-23
3-7. PNP/PCI CONFIGURATIONS SETUP MENU ............................ 3-30
3-8. PC HEALTH STATUS.............................................................. 3-33
3-9. LOAD FAIL-SAFE DEFAULTS ................................................. 3-34
3-10. LOAD OPTIMIZED DEFAULTS................................................. 3-34
3-11. SET PASSWORD ..................................................................... 3-35
3-12. SAVE & EXIT SETUP.............................................................. 3-37
3-13. EXIT WITHOUT SAVING......................................................... 3-38
APPENDIX A. INSTALLING THE VIA SERVICE PACK DRIVERS
FOR WINDOWS®98 SE
APPENDIX B. INSTALLING THE VIA PCI AUDIO DRIVER FOR
WINDOWS®98 SE
APPENDIX C. INSTALLING THE VIA USB FILTER DRIVER FOR
WINDOWS®98 SE

APPENDIX D. INSTALLING THE VIA SERVICE PACK DRIVERS
FOR WINDOWS®NT 4.0 SERVER / WORKSTATION
APPENDIX E. INSTALLING THE VIA PCI AUDIO DRIVERS FOR
WINDOWS®NT 4.0 SERVER / WORKSTATION
APPENDIX F. INSTALLING THE VIA SERVICE PACK DRIVERS
FOR WINDOWS®2000
APPENDIX G. INSTALLING THE VIA PCI AUDIO DRIVERS FOR
WINDOWS®2000
APPENDIX H. INSTALLING THE VIA USB FILTER DRIVER FOR
WINDOWS®2000
APPENDIX I. BIOS FLASHING USER INSTRUCTIONS
APPENDIX J. INSTALLING THE VIA HARDWARE MONITOR
SYSTEM
APPENDIX K. TROUBLESHOOTING
(NEED ASSISTANCE?)
APPENDIX L. HOW TO GET TECHNICAL SUPPORT

Introduction of VL6 Features 1-1
User’s Manual
Chapter 1. Introduction of VL6 Features
1-1. Features of This Motherboard
This motherboard is designed for Intel’s new generation of Intel®Pentium®III & Celeron™
processors. It supports the Intel®Pentium®III & Celeron™processor, with the FC-PGA &
PPGA (Plastic Pin Grid Array package) 370-pin design, up to 768MB of memory, newer
super I/O, and Green PC functions.
The VL6 uses the VIA Apollo Pro 133 chipset to make the evolutionary move from PC 100
to PC 133, increasing the speed of the system and memory buses from 100 MHz to 133 MHz.
It’s 133 MHz memory interface supports the wide range of PC 133 memory devices now on
the market. Its 133MHz capable front-side bus delivers a clear upgrade path to the future
generation of 133MHz processors.
The VL6 provides you expendability for the USB port. It can give you the maximum four
USB ports to connect to USB peripherals. The additional two USB port plugs and cable KIT
are an option. VL6 also has a built in AC ‘97 2.1 CODEC onboard. This CODEC has an
integrated H/W Sound Blaster ProAC ‘97 digital audio controller that can give you the
best sound quality and compatibility.
The VL6 has a built in Ultra ATA/66 function. This means that it can provides speedier HDD
throughput that boosts overall system performance. Ultra ATA/66 is the new standard for
IDE devices. It enhances existing Ultra ATA/33 technology by increasing both performance
and data integrity. This new high-speed interface doubles the Ultra ATA/33 burst data
transfer rate to 66.6 Mbytes/sec. The result is maximum disc performance using the current
PCI local bus environment. Another benefit is, you can connect another four IDE devices in
your system either Ultra ATA/33 IDE devices or Ultra ATA/66 IDE devices. You will have
more flexibility to expand your computer system.
The VL6 has one AMR slot onboard, it is called the Audio/Modem Riser (AMR) slot. The
Audio/Modem Riser is an open industry-standard specification that defines a hardware
scalable Original Equipment Manufacturer (OEM) motherboard riser board and interface,
which supports both audio and modem functions. The specification's main objective is to
reduce the baseline implementation cost of audio and modem functionality. In accordance
with PC user's demands for feature-rich PCs, combined with the industry's current trend
towards lower cost PCs, all of theses functions are built into the motherboard. But
motherboard integration of the modem subsystem has been problematic to date, in large part
due to FCC and other international telecom certification processes that may delay the
introduction of a motherboard. Resolving the homologation / certification issue for modems
is one of the AMR specification's key objectives.
In the future, not only OEM motherboards will have an AMR design, the AMR card will
appear in the market and you can make a choice in buying this kind of card according to your
budget. But your motherboard must have an AMR slot to be able to plug an AMR card. The
VL6 insures this expandibility for this issue.
VL6 provides highly flexibility to users building PentiumII/III and Celeron™ level systems.
It provides the option of 66/100 or 100/133MHz CPU and memory bus combinations. You
can choose the different combinations and don't need to upgrade many new components to
change to this motherboard.

1-2 Chapter1
VL6
The VL6 has built-in hardware monitoring functions (you can refer to Appendix J for
detailed information), they can monitor and protect your computer insuring a safe
computing environment. The motherboard can provide high performance for servers and
meets the requirements for desktop systems for multimedia in the future.
1-2. Specifications
1. CPU
!Supports Intel®Pentium®III 500 ~ 1GHz processors (Based on FC-PGA package)
!Supports Intel®Celeron™ 300A~733MHz processors (Based on 66MHz PPGA & FC-
PGA package)
!Supports 66, 100 and 133MHz CPU external clock speeds
!Reserves support for future Intel®Pentium®III processors
2. Chipset
!VIA Apollo Pro 133 chipset (VT82C693A and VT82C686A)
!Supports Ultra DMA/33 and Ultra DMA/66 IDE protocol
!Supports Advanced Configuration and Power Management Interface (ACPI)
!Accelerated Graphics Port connector supports AGP 1x and 2x mode (Sideband) 3.3V
device
3. Memory (System Memory)
!Three 168-pin DIMM sockets support SDRAM modules
!Supports up to 768MB MAX. (8, 16, 32, 64, 128, and 256MB SDRAM)
!Supports ECC
4. System BIOS
!CPU SOFT MENU™ II, can easily set the processor parameters
!Award Plug and Play BIOS supports APM and DMI
!Write-Protect Anti-Virus function by AWARD BIOS
5. Multi I/O Functions
!Two Channels of Bus Master IDE Ports supporting up to four Ultra DMA 33/66 devices
!PS/2 keyboard and PS/2 mouse connectors
!One floppy port connector ( up to 2.88MB)
!One parallel port connector (EPP/ECP)
!Two serial ports connectors
!Two USB connectors
!On board USB header for two extra USB channels
!Built-in IrDA TX-RX header
!Audio/Game connectors (Line-in, Line-out, MIC-in, and Game Port connectors)
6. Audio CODEC Features
!AC ’97 2.1 compliant
!Integrated hardware Sound Blaster ProAC ‘97 digital audio controller
7. Miscellaneous
!ATX form factor
!One AGP slot, five PCI slots, one ISA slot and one AMR slot
!Built-in Wake on LAN header
!Built-in IrDA TX/RX header
!Built-in Wake On Modem header
!Built-in SM bus header

Introduction of VL6 Features 1-3
User’s Manual
!Hardware monitoring：Included fan speed, voltages, CPU and system environment
temperature
!Board size: 305 * 190mm
"
""
"Supports Wake On LAN, Modem, but your ATX power supply 5V standby power
must be able to provide at least a 720mA current capacity. Otherwise, the functions
may not work normally.
#The 66MHz/100MHz/133MHz bus speeds are supported but not guaranteed due to the
PCI, processor and chipset specifications.
#Specifications and information contained in this manual are subject to change without
notice.
Note
All brand names and trademarks are the property of their respective owners.
1-3. Layout Diagram
Figure 1-2. VL6 Motherboard component location

1-4 Chapter1
VL6
1-4. The System Block Diagram
Figure 1-3. System diagram of the VIA Apollo Pro 133 chipset

Installing the Motherboard 2-1
User’s Manual
Chapter 2. Installing the Motherboard
This VL6 motherboard not only provides all standard equipment for classic personal
computers, but also provides great flexibility for meeting future upgrade demands. This
chapter will introduce step by step all of the standard equipment and will also present, as
completely as possible, future upgrade capabilities. This motherboard is able to support all
IntelPentiumIII (FC-PGA) processors and IntelCeleron™(PPGA & FC-PGA)
processors now on the market. (For details, see specifications in Chapter 1.)
This chapter is organized according the following features:
2-1 Installing the Motherboard to the Chassis
2-2 Installation of the IntelPentiumIII (FC-PGA) & Celeron™(PPGA & FC-PGA) CPU
2-3 Installing System Memory
2-4 Connectors, Headers and Switches
$$$$
$$$$$$$$
$$$$ Before Proceeding with the Installation $$$$
$$$$$$$$
$$$$
Before you install or unplug any connectors or add-on cards, please remember to turn the
ATX power supply switch off (fully turn the +5V standby power off), or take the power cord
off. Otherwise, you may cause the motherboard components or add-on cards to malfunction
or be damaged.
User Friendly Instructions
Our objective is to enable the novice computer user to perform the installation by himself.
We have attempted to write this document in a very clear, concise and descriptive manner to
help overcome any obstacles you may face during installation. Please read our instructions
carefully and follow them step-by-step.
2-1. Installing the Motherboard to the Chassis
Most computer chassis will have a base on which there will be many mounting holes that
allows the motherboard to be securely attached and at the same time, prevents short circuits.
There are two ways to attach the motherboard to the base of chassis:
!with studs
!or with spacers
Please refer to figure 2-1, which shows the studs and
spacers. There may be several types, but all look
like the figures below:
In principle, the best way to attach the motherboard
is with studs. Only if you are unable to do this
should you attach the board with
spacers. Take a careful look at the
motherboard and you will see
many mounting holes on it. Line
these holes up with the mounting
holes on the base. If the holes line
up and there are screw holes this
means you can attach the

2-2 Chapter2
VL6
motherboard with studs. If the holes line up and there are only slots, this means you can only
attach the motherboard with spacers. Take the tip of the spacers and insert them into the slots.
After doing this to all the slots, you can slide the motherboard into position aligned with the
slots. After the motherboard has been positioned, check to make sure everything is OK
before putting the casing back on.
Figure 2-2 shows you the way to affix the motherboard using studs or spacers:
Note
If the motherboard has mounting holes, but they don’t line up with the holes on the base
and there are no slots to attach the spacers, don’t worry, you can still attach the spacers to
the mounting holes. Just cut the bottom portion of spacers (the spacer they may be a little
hard to cut, so be careful with your hands). In this way you can still attach the
motherboard to the base without worrying about short circuits. Sometimes you may need
to use the plastic springs to isolate the screw from the motherboard PCB surface, because
the circuit wire may be near by the hole. Be careful, don’t let the screw contact any the
printed circuit wire or parts on the PCB that are near the fixing hole, otherwise it may
damage the board or cause board malfunctioning.
2-2. Installation of the Intel®Celeron™ (PPGA & FC-
PGA) & Pentium®III (FC-PGA) processors
The Intel®Celeron™ (PPGA & FC-PGA) & Pentium®III (FC-PGA) package processor
installation, is easy, like Socket 7 Pentium®processors before. Because it uses the “Socket
370” ZIF (Zero Insertion Force) socket, it lets you easily fix the processor on to its position
firmly. Figure 2-3 shows you what the 370 socket looks like, and how to open the lever. Its
pin count is more than socket 7. Therefore, a Pentium level processor cannot be inserted into
socket 370.
When you raise the lever, you have to loosen the socket lock. Please raise the lever to the end,
and prepare to insert the processor. Next, you need to align the processor pin 1 to the socket
pin 1. If you put it in the wrong direction, you will not be able to insert the processor easily,
and processor pins will not fully go into the socket. If that is the case, please change the
direction, until it easily and fully inserts into the 370 socket. See Figure 2-4.
When you finish the above, push the lever down to its original position, and you should feel
the lever lock up the 370 socket. You have then finished the processor installation.

Installing the Motherboard 2-3
User’s Manual
Figure 2-6. Memory module installation
2-3. Installing System Memory
This motherboard provides three 168-pin DIMM sites for memory expansion. The DIMM
sockets support 1Mx64 (8MB), 2Mx64 (16MB), 4Mx64 (32MB), 8Mx64 (64MB), 16Mx64
(128MB), and 32Mx64 (256MB) or double sided DIMM modules. Minimum memory size
is 8MB and maximum memory size is 768MB SDRAM. There are three Memory module
sockets on the system board. (Total six banks)
In order to create a memory array, certain rules must be followed. The following set of rules
allows for optimum configurations.
!The memory array is 64 or 72 bits wide. (depending on with or without parity)
!Those modules can be populated in any order.
!Supports single and double density DIMMS.
Table 2-1. Valid Memory Configurations
Bank Memory Module Total Memory
Bank 0, 1
(DIMM1)
8MB, 16MB, 32MB,
64MB, 128MB, 256MB 8MB ~ 256MB
Bank 2, 3
(DIMM2)
8MB, 16MB, 32MB,
64MB, 128MB, 256MB 8MB ~ 256MB
Bank 4, 5
(DIMM3)
8MB, 16MB, 32MB,
64MB, 128MB, 256MB 8MB ~ 256MB
Total System Memory 8MB ~ 768MB
Generally, installing SDRAM modules to your
motherboard is an easy thing to do. You can refer
to figure 2-5 to see what a 168-pin PC100 &
PC133 SDRAM module looks like.
Unlike installing SIMMs, DIMMs may be
"snapped" directly into the socket. Note: Certain
DIMM sockets have minor physical differences.
If your module doesn't seem to fit, please do not force it into the socket as you may damage
your memory module or DIMM socket.
The following procedure will show you how
to install a DIMM module into a DIMM
socket.
Step 1. Before you install the memory
module, please place the computer power
switch in the off position and disconnect the
AC power cord from your computer.
Step 2. Remove the computer’s chassis
cover.
Step 3. Before touching any electronic
components, make sure you first touch an
unpainted, grounded metal object to discharge
any static electricity stored on your clothing
or body.
Figure 2-5 PC100/PC133 Module and
Com
p
onent Mark

2-4 Chapter2
VL6
Step 4. Locate your computer’s 168-pin memory expansion DIMM socket.
Step 5. Insert the DIMM module into the expansion socket as shown in the illustration.
Note how the module is keyed to the socket. You can refer to figure 2-6 for the
details. This insures the DIMM module will be plugged into the socket in one way
only. Firmly press the DIMM module into the DIMM socket, making certain the
module is completely seated in the DIMM socket.
Step 6. Once the DIMM module has been installed, the installation is complete and the
computer’s cover can be replaced. Or you can continue to install other devices and
add-on cards that are mentioned in the following section.
Note
When you install a DIMM module fully into the DIMM socket, the eject tab should be
locked into the DIMM module very firmly and fit into its indention on the both sides.
You are hard to make different from its outside look between PC100 and PC133 SDRAM
module, the only way you can identify them is to see the sticker on the RAM module. The
sticker will show you the RAM module is which kind structure module.
2-4. Connectors, Headers and Switches
Inside the case of any computer several cables and plugs have to be connected. These cables
and plugs are usually connected one-by-one to connectors located on the motherboard. You
need to carefully pay attention to any connection orientation the cables may have and, if any,
notice the position of the first pin of the connector. In the explanations that follow, we will
describe the significance of the first pin.
We will show you all of the connectors, headers and switches here, and tell you how to
connect them. Please pay attention and read the entire section for necessary information
before attempting to finish all of the hardware installation inside the computer chassis.
Figure 2-7 shows you all of the connectors and headers that we’ll discuss in the next section,
you can use this diagram to visually locate each connector and header we describe.
All connectors, headers and switches mentioned here, will depend on your system
configuration. Some features you may (or may not) have and need to connect or configure
depending on the peripheral. If your system doesn't have such add-on cards or switches you
can ignore some special feature connectors.

Installing the Motherboard 2-5
User’s Manual
Figure 2-7. All Connectors and Headers for the VL6
First, Let’s see the headers that VL6 uses, and what their functions are.
(1) ATXPWR1: ATX Power Input Connector
Caution
If the power supply connectors are not properly attached to the ATXPWR1 power
supply, the power supply or add-on cards may be damaged.
Attach the connector from the power supply
to the ATXPWR1 connector here.
Remember you have to push the connector
from the ATX power supply firmly to the
end with the ATXPWR1 connector, insuring
that you have a good connection.
Note: Watch the pin position and the
orientation

2-6 Chapter2
VL6
(2A)/(2B)/(2C): FAN1, FAN2 & FAN3 header
Attach the connector from the individual
CPU fan to the header named FAN1,
connector from the chassis fan to the header
FAN3 and attach the connector from the
power fan to FAN2 header.
You must attach the CPU fan to the
processor, or your processor will work
abnormally or may be damaged by
overheating. Also, if you want the computer
case’s internal temperature to be kept steady
and not too high, you had better connect the
chassis fan to reach this goal.
Note: Watch the pin position and the orientation
(3) IR: IR Header (Infrared)
There is a specific orientation for pins 1
through 5, attach the connector from the IR
KIT or IR device to the IR1 header (left row
only). This motherboard supports standard
IR transfer rates.
Note: Watch the pin position and the
orientation
(4) WOM1: Wake On Modem Header
If you have an internal modem adapter that
supports this feature, then you can connect
the specific cable from the internal modem
adapter to this header. This feature lets you
wake up your computer via remote control
through the modem.
Note: Watch the pin position and the
orientation

Installing the Motherboard 2-7
User’s Manual
(5) WOL1: Wake on LAN Header
If you have a network adapter that supports
this feature, then you can connect the
specific cable from the network adapter to
this header. This feature lets you wake up
your computer via remote control through a
local area network. You may need a specific
utility to control the wake up event, like
using the PCnet Magic Packet utility or
other similar utilities.
Note: Watch the pin position and the
orientation
(6) SMB1: System Management Bus Connector
This connector is reserved for system
management bus (SM bus). The SM bus is a
specific implementation of an I2C bus. I2C is
a multi-master bus, which means that
multiple chips can be connected to the same
bus and each one can act as a master by
initiating a data transfer. If more than one
master simultaneously tries to control the
bus, an arbitration procedure decides which
master gets priority.
Note: Watch the pin position and the
orientation
(7A)/(7B): RT1 & RT2 Thermister:
The RT1 thermistor used to detect the CPU
temperature.
The RT2 is a thermistor used to detect the
system environmental temperature. It may
also be called a system temperature detector.

2-8 Chapter2
VL6
(8) USB2 Headers: Additional USB Plugs Header
This header is for connecting the additional
USB ports plugs. You can use the special
USB port expend cable (option), it can
provides you additional two USB plugs, you
can fix these USB plugs on the back panel.
(9) CDIN1: Internal CD-ROM Drive Audio Cable Header
This header is for the internal CD-ROM
drive audio cable connection use, and this
header are used for specify type of CD audio
cable connector. Please check your audio
cable attached with the CD-ROM drive to
see which type connector you have, then
plug it to this header.
(10) CCMOS1: CMOS Discharge Jumper
Jumper CCMOS1 discharge CMOS
memory. When you install the motherboard,
make sure this jumper is set for normal
operation (pin 1 and 2 shorted). See figure
2-8.
Pin number Name or significance of
signal
1NC
2NC
3 VCC0
4 VCC1
5 Data -
6 Data1 -
7 Data +
8 Data1 +
9 Ground
10 Ground
Figure 2-8. CCMOS1 jumper setting

Installing the Motherboard 2-9
User’s Manual
Note
Before you clear the CMOS, you have to first turn the power off (including the +5V
standby power). Otherwise, your system may work abnormally or malfunction.
(11) J1 & J2 Headers:
There are two headers to use for selecting
the functions for the audio CODEC and/or
the AMR card. Please refer to the table
below for the proper settings.
For example, if you want to use the onboard
audio CODEC, choose the “AC97” settings.
If you want to use the modem CODEC card
insertion on the AMR slot, then choose the “MC 97” setting. If you want both to work,
choose the “AC 97 & MC 97” setting.
(12) JP1 Header: AMR Function Selection
This header can select whether the AMR
card insertion on the AMR slot is primary or
secondary. When you don’t want to use the
onboard audio CODEC, you have to set JP1
at open. The default setting is short.
Remember that only when using an MC 97
card should you select the JP1 as open.
Otherwise, leave it selected as short.
Items AMR Card
JP1 short Secondary
JP1 Open Primary
(13) PN1 and PN2 Headers
PN1 and PN2 are for switches and indicators
for the chassis’s front panel, there are
several functions that come from these two
headers. You have to watch the pin position
and the orientation, or you may cause
system malfunctions. Figure 2-9 shows you
the PN1 and PN2 functions of the pins.
J1 J2
AC 97 Short 1-2 Pin Short
MC 97 Open 3-4 Pin Short
AC 97 & MC 97 Short 1-2 Pin Short
3-4 Pin Short

2-10 Chapter2
VL6
Figure 2-9. The definition of PN1 and PN2
pins
PN1 (Pin 1-2-3-4-5): Power LED Headers
There is a specific orientation for pins 1
through 3. Insert the three-threaded power
LED cable to pins 1~3. Check to make sure
the correct pins go to the correct connectors
on the motherboard. If you install them in
the wrong direction, the power LED light
will not illuminate correctly.
Note: Watch the power LED pin position
and orientation.
PN1 (Pin 6-7): HDD LED Header
Attach the cable from the case’s front panel
HDD LED to this header. If you install it in
the wrong direction, the LED light will not
illuminate correctly.
Note: Watch the HDD LED pin position and
the orientation.
PN1 (Pin 8-9): Power on Switch Header
Attach the cable from the case’s front panel
power switch to this header.

Installing the Motherboard 2-11
User’s Manual
PN1 (Pin 10-11): Hardware Suspend Switch (SMI Switch) Header
Attach the cable from the case’s front panel
suspend switch (if there is one) to this
header. Use this switch to enable/disable the
power management function by hardware.
Note: If ACPI function in the BIOS setup is
enabled, this function will not work.
PN2 (Pin 1-2): Hardware Reset Switch Header
Attach the cable from the case’s front panel
Reset switch to this header. Press and hold
the reset button for at least one second to
reset the system.
PN2 (Pin 4-5-6-7): Speaker Header
Attach the cable from the system speaker to
this header.
For the PN1 and PN2 pin’s count-name list,
please refer to table 2-2.
Table 2-2. PN1 and PN2 pin count name list
PIN Name Significance of signal PIN Name Significance of signal
PIN 1 +5VDC PIN 1 Ground
PIN 2 No connection PIN 2 Reset input
PIN 3 Ground PIN 3 No connection
PIN 4 No connection PIN 4 +5VDC
PIN 5 No connection PIN 5 Ground
PIN6 LED power PIN6 Ground
PIN 7 HDD active PIN 7 Speaker data
PIN 8 Ground PIN 8 No connection
PIN 9 Power On/Off signal PIN 9 No connection
PIN 10 Ground PIN 10 No connection
PN1
PIN 11 Suspend signal
PN2
PIN 11 No connection
Let’s now see the I/O connectors that VL6 uses, and what their functions are.

2-12 Chapter2
VL6
(14) FDC1 Connector
This 34-pin connector is called the “floppy
disk drive connector”. You can connect a
360K, 5.25”, 1.2M, 5.25”, 720K, 3.5’’,
1.44M, 3.5” or 2.88M, 3.5” floppy disk
drive, you can even connect a 3 Mode
floppy disk drive (it’s a 3 1/2” drive used in
Japanese computer systems).
A floppy disk drive ribbon cable has 34
wires and two connectors to provide the
connection of two floppy disk drives. After
connecting the single end to the FDC1,
connect the two connectors on the other end
to the floppy disk drives. In general, people
only install one floppy disk drive on their computer system.
Note
A red mark on a wire typically designates the location of pin 1. You need to align the
wire pin 1 to the FDC1 connector pin 1, then insert the wire connector into the FDC1
connector.
(15) IDE1 and IDE2 Connectors
An IDE hard disk drive ribbon cable has 40
wires and two connectors to provide a
connection for two IDE hard disk drives.
After connecting the single end to the IDE1
(or IDE2), connect the two connectors on
the other end to the IDE hard disk drives (or
CD-ROM drive, LS-120, etc.).
Before you install a hard disk, there are
some things you need to be aware of:
♦“Primary” refers to the first connector on the motherboard, that is, the IDE1 connector
on the motherboard.
♦“Secondary” refers to the second connector on the motherboard, that is, the IDE2
connector on the motherboard.
♦Two hard disks can be connected to each connector:
The first HDD is referred to as the “Master”, the second HDD is referred to as the
“Slave”.
♦For performance issues, we strongly suggest you not to install CD-ROM drive on the
same IDE channel with hard disk. Otherwise, the system performance on this channel
may drop. (For dropping how much is depending on your CD-ROM drive performance.)