DFI G486VPC User manual

G486VPC
Rev. BA0+
System Board
User’s Manual
-30071030-

FCC 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 in-
terference 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 in-
stallation. 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 oper-
ate the equipment.
2.Shielded interface cables must be used in order to comply with the
emission limits.
The manufacturer makes no warranties with respect to this documenta-
tion and disclaims any implied warranties of merchantability, quality, or
fitness for any particular purpose. The information in this document is
subject to change without notice. The manufacturer reserves the right to
make revisions to this publication and to make changes to any and/or
all parts of its content, at any time, without obligation to notify any per-
son or entity of such changes. Further, the manufacturer assumes no
responsibility for any errors that may appear in this document.
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.

TableofContents
Chapter1:Introduction............................................................ 5
FeaturesandSpecifications.................................................. 6
PackageChecklist............................................................... 8
Chapter2:HardwareInstallation................................................ 9
PreparingtheArea.............................................................. 9
HandlingtheSystemBoard................................................... 9
StaticElectricityPrecautions...........................................10
InstallingtheSystemBoard..................................................10
BoardLayout ....................................................................12
SystemMemory................................................................13
InstallingaSIMModule..................................................13
MemoryConfiguration.........................................................14
CacheMemory.................................................................16
JumperSettingsforCacheMemory..................................16
CPUInstallation................................................................16
JumperSettingsforCPU................................................17
InstallingUpgradeCPUs................................................21
JumperSettingsforPCISlots...............................................24
JumperSettingsforCMOSClean..........................................25
JumperSettingsforEPROMType..........................................25
FactoryTestingJumpers......................................................26
Built-inPorts.....................................................................27
SerialPorts.................................................................27
PS/2MousePort ..........................................................27
ParallelPort ................................................................28
FloppyDiskDriveController............................................28
IDEHardDiskInterface.................................................28
InstallingExpansionCards..............................................31
Chapter3:SoftwareInstallation...............................................32
AwardBIOSCMOSSetupUtility............................................32
StandardCMOSSetup..................................................33
BIOSFeaturesSetup....................................................35
ChipsetFeaturesSetup.................................................36
PowerManagementSetup..............................................37
PCIConfigurationSetup.................................................38
LoadBIOSDefaults......................................................38

4
LoadSetupDefaults......................................................38
SupervisorPassword.....................................................39
UserPassword............................................................40
IDEHDDAutoDetection................................................40
Save&ExitSetup.........................................................43
ExitWithoutSaving.......................................................43
SystemErrorReport...........................................................44
Chapter4: TroubleshootingChecklist.......................................47
AppendixA: TypesofModules................................................48
AppendixB:MemoryandI/OMaps...........................................49
AppendixC: PCII/OPinAssignments.......................................51
AppendixD: ISAI/OPinAssignments.......................................52
AppendixE: SystemOverview.................................................53
AppendixF: ConnectorPinAssignments..................................55
AppendixG: AwardBIOSHardDiskTable..................................60

5
The G486VPC system board is an Energy Star compliant system board
that reduces energy consumption by automatically turning off peripher-
als when not in use.
The G486VPC system board is equipped with a 237-pin Zero Insertion
Force (ZIF) CPU socket that allows users to easily upgrade their pro-
cessor with Intel, AMD, Cyrix or SGS-Thomson CPUs.
The G486VPC system board uses Award BIOS (Windows 95 Plug and
Play compatible) that supports Enhanced IDE HDDs larger than 528MB.
The G486VPC can support 1MB to 64MB of system memory using x32
or x36 DRAM. It also supports 128KB or 256KB Level 1 and Level 2
write-back/write-through cache.
Equipped with one built-in VL-bus IDE connector and one ISA IDE con-
nector, the G486VPC system board can control four drives and sup-
ports fast Mode 3 and Mode 4 HDDs. This system board is also
equipped with two NS16C550A-compatible serial ports, an ECP/EPP
parallel port, a floppy disk drive controller, one PS/2 mouse port and
one AT or optional PS/2 keyboard connector.
The G486VPC design is based on the Peripheral Component Intercon-
nect (PCI) local bus and Industry Standard Architecture (ISA) stan-
dards. It is equipped with 6 dedicated ISA slots, and 1 shared PCI/8-bit
ISA slot.
Chapter 1
Introduction

6
Features and Specifications
Processor
•5V CPUs - Intel, Cyrix and SGS-Thomson
•3.3V CPUs - Intel, AMD, Cyrix and SGS-Thomson
Chipset
•VIA VT82C496 - system and cache controller
•VIA VT82C505 - PCI bridge
•VIA VT82C416 - peripheral chip
Cache Memory
•128KB or 256KB
•Supports Level 1 and Level 2 write-back/write-through cache
System Memory
•1MB to 128MB
•Three 72-pin SIMM sockets
•Supports memory parity-check function
•256KBx36/x32, 1MBx36/x32, 4MBx36/x32, and 16MBx36/x32 (SM1-
SM3)
•512KBx36/x32, 2MBx36/x32, and 8MBx36/x32 (SM1 or SM3)
BIOS
•Award BIOS, Windows 95 Plug and Play compatible (Flash EPROM
or EPROM)
•Supports Enhanced IDE HDDs larger than 528MB
•System and EGA/VGA BIOS shadow
Energy Efficient Design
•Supports SMM mode and CPU stopped clock
•Hardware supports flexible event-driven power management
scheme and easy CPU state transition: Ready, Doze and Suspend
•Microsoft APM 1.1 compliant
•EPA Energy Star compliant design

7
Integrated I/O
•Uses UMC super I/O controller
•Two NS16C550A-compatible enhanced serial ports
•One ECP/EPP parallel port
•Supports 360KB, 720KB, 1.2MB, 1.44MB, and 2.88MB floppy
drives
•Two fast IDE connectors:
-Primary IDE is a VL-Bus IDE to support Mode 3 and Mode 4
HDDs
-Secondary IDE is an ISA IDE to support one tape drive and one
ATAPI CD-ROM drive
ZIF Socket
•237-pin ZIF socket (Intel Socket 3)
Connectors
•2 serial ports
•1 parallel port
•2 IDE connectors
•1 floppy connector
•1 PS/2 mouse port
•1 AT keyboard connector or optional mini-DIN-6 PS/2 keyboard
port
Expansion Slots
•6 dedicated 16-bit ISA slots
•1 shared PCI/8-bit ISA slot
PCB
•Four layers, Baby AT form factor
•25cm (9.84") x 22cm (8.66")

8
Package Checklist
The G486VPC package contains the following items:
•The G486VPC system board
•The G486VPC user’s manual
•One 40-pin IDE hard disk cable
•One 34-pin floppy disk drive cable
•Serial, 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
Option 3:
- One 25-pin printer port cable for chassis mounting
- Two 9-pin serial port cables for chassis mountign
- One PS/2 mouse port cable for chassis mounting
•Five jumper caps
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.

9
Chapter 2
Hardware Installation
This chapter summarizes the steps to install the G486VPC system
board into your system unit. It also includes a description of the area in
which you must work and directions for memory installation. Before in-
stalling the system board, obtain the memory you plan to install. Please
refer to the memory chart on pages 14 and 15 for the number and type
of SIM modules needed for the amount of memory you require.
Preparing the Area
Before unpacking the system board, make sure the location you have
selected is relatively free of dust and static electricity. Excessive expo-
sure to dust, static electricity, direct sunlight, excessive humidity, ex-
treme cold, and water can damage the operational capabilities of your
system board. Avoid placing the unit on surfaces such as carpeted
floors. These areas also attract static electricity which can damage
some circuits on your system board.
Make sure the power source has a properly grounded, three-pronged
socket. It is essential that the power connection be properly grounded
for correct functioning of your system board. For further protection, we
recommend that you use a surge suppressor. This will protect the sys-
tem board from damage that may result from a power surge on the
electrical line.
Move items that generate magnetic fields away from your system board
since magnetic fields can also damage your system board. Once you
have selected the ideal location, unpack the G486VPC system board
carefully.
Handling the System Board
It is quite easy to inadvertently damage your system board even before
installing it in your system unit. Static electrical discharge can damage
computer components without causing any signs of physical damage.
You must take extra care in handling the system board to ensure
against electrostatic build-up.

10
Static Electricity Precautions
1.To prevent electrostatic build-up, leave the board in its anti-static
bag until you are ready to install it.
2.Wear an antistatic wrist strap.
3.Do all preparation work on a static-free surface with system board
components facing up.
4.Hold the system board only by its edges. Be careful not to touch
any of the components, contacts or connections, especially gold
contacts, on the board.
5.Avoid touching the pins or contacts on all modules and connectors.
Hold modules and connectors by their ends.
Warning:
Electrostatic discharge (ESD) can damage your processor, disk drives,
add-in boards, and other components. Perform the upgrade instruction
procedures described at an ESD workstation only. If such a station is
not available, you can provide some ESD protection by wearing an anti-
static wrist strap and attaching it to a metal part of the system chassis.
If a wrist strap is unavailable, establish and maintain contact with the
system chassis throughout any procedures requiring ESD protection.
Installing the System Board
If you are installing the G486VPC system board, the following outlines
the basic installation steps. Before installing the system board into your
system unit, you should prepare the tools you will need.
You will need:
•One medium size, flat-bladed screwdriver
•One medium Phillips screwdriver
•One needle-nosed pliers
1.Unlock your system unit. Turn off the power and disconnect all
power cords and cables.