DFI G486-EVB Bedienungsanleitung
G486-EVB
Rev.A
System Board
User’s Manual
-D24341209-
vCopyright1994,byDFIInc.
All rights reserved.
No part of this document may be copied or reproduced
in any form or by any means without the prior written
consent of DFI, Inc.
DFI, Inc. makes no warranties with respect to this
documentation 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. DFI, Inc. 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 person or entity of such
changes. Further, DFI, Inc. assumes no responsibility
for any errors that may appear in this document.
DFI is a registered trademark, and G486-EVB is a
trademark of Diamond Flower, Inc. All other product
names mentioned are trademarks or registered trade-
marks of their respective companies.
vFCCStatementonClassB
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 interfer-
ence 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 modification 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.
v Table of Contentsv
Introduction .................................................................................
Features and Specifications .................................................
Installation Overview .................................................................
Preparing the Area ................................................................
Handling the System Board ..................................................
Tips in Handling the System Board ...............................
Hardware Installation.............................................................
Memory Installation .........................................................
Installing the Modules ..............................................
Board Configuration ...............................................................
Jumper Settings ..............................................................
Locations of Jumpers JP3 and JP15 .....................
Jumper Settings for VL-Bus Add-on Boards .........
Jumper Settings for Light and Deep Green ...........
Cache Configuration .......................................................
Jumper Settings for Cache Memory ......................
CPU Installation and Upgrade .......................................
Jumper Settings for CPUs ......................................
Installing Upgrade CPUs ........................................
Installing the System Board ..................................................
Initial Setup Program .................................................................
Award BIOS CMOS Setup Utility ..........................................
Standard CMOS Setup ...................................................
BIOS Features Setup .....................................................
Chipset Features Setup .................................................
Power Management Setup ............................................
Load BIOS Defaults ........................................................
Load Setup Defaults .......................................................
Password Setting ............................................................
IDE HDD Auto Detection ................................................
Save and Exit Setup .......................................................
Exit Without Saving ........................................................
1-1
1-2
2-1
2-1
2-2
2-2
2-2
2-2
2-4
2-5
2-6
2-6
2-8
2-10
2-11
2-13
2-14
2-15
2-20
2-25
3-1
3-2
3-2
3-5
3-7
3-8
3-9
3-9
3-10
3-11
3-14
3-14
Troubleshooting ...........................................................................
Appendix A: Types of Modules .................................................
Appendix B: System Error Report ............................................
Appendix C: Memory and I/O Maps ..........................................
Appendix D: 16-Bit ISA I/O Pin Assignments ..........................
Appendix E: VL-Bus I/O Pin Assignments ...............................
Appendix F: Connector Pin Assignments ...............................
Appendix G: Award BIOS Hard Disk Table .............................
4-1
A-1
B-1
C-1
D-1
E-1
F-1
G-1
EnergyStarCompliantSystemBoard
1-1 uIntroduction
vIntroduction
The G486-EVB is an Energy Star Compliant system
board that meets the Environmental Protection Agency’s
Green PC requirements. It reduces energy consumption
to 15 Watts or less by automatically turning off periph-
erals or the entire system, when not in use.
The G486-EVB accommodates all of the Intel 486
family of CPUs including the energy saving SL En-
hanced CPUs. The system board may be equipped with
an 80486SX or 80486DX at 25/33 MHz, an 80486DX2
at 50/66 MHz, and, when equipped with optional 3.3V
support, an 80486DX4 at 75/100 MHz. It will also
support the Intel486 OverDrive Processor, AMD
486DXL low power processor, Cyrix Cx486DX/DX2
and Cx486S/S2 CPUs.
The G486-EVB uses 256K x 36, 1M x 36 and 4M x 36
HSIM modules. The memory can be configured to six
different sizes from 1MB to 64MB. In addition, the
G486-EVB is equipped with three 32-bit VESA
VL-Bus, and six 16-bit and one 8-bit ISA expansion
slots.
G486-EVB
Features and Specifications
•Microprocessor
Intel 486SX-25/33, 486DX-33, 486DX2-50/66,
SL Enhanced CPUs, Intel486TM DX2
OverDrive Processor,
80486DX4-75/100 (with optional 3.3V support)
AMD 486DXL low power CPU
Cyrix Cx486S-25/33, Cx486S2-50/66,
Cx486DX-25/33 and Cx486DX2-50/66
•Energy-Efficient Design
Intel SL Enhanced CPU ready
Supports system power management
Supports CPU stopped clock
Supports optional external power management
switch
Supports power saving video mode
•Chipset
EC802G: system and cache controller
EC100: data buffer
•BIOS
Award system BIOS
•Cache Memory
128K, 256K or 512K
Supports direct map write-back or write-through
cache subsystem
•Memory Onboard
1MB to 64MB
Introduction u1-2
EnergyStarCompliantSystemBoard
•DRAM Type
256K x 36, 1M x 36 and 4M x 36 HSIMMs
•Slots
Three VESA VL-Bus slots
Six 16-bit ISA slots
One 8-bit ISA slot
•Power Management
Flexible Doze mode, Standby mode and Suspend
mode transitions using SMM type of CPUs and
SMM software handler.
Built-in hardware auto-transition mechanism.
Microsoft APM supported.
•PCB
4 layers
1-3 uIntroduction
PackageChecklist
The G486-EVB package contains the following items:
•The G486-EVB system board
•One G486-EVB user’s manual
If either of these items is missing or damaged, please
contact your dealer or sales representative for assistance.
G486-EVB
Installation Overview u2-1
vInstallation Overview
This chapter summarizes the steps in installing the
G486-EVB 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
installing the system board, obtain the memory you plan
to install. Please refer to the memory chart on page 2-3
for the number and type of HSIM modules needed.
Preparing the Area
Before unpacking the system board, make sure the
location you have selected is relatively free of dust and
static. Excessive exposure to dust, static electricity,
direct sunlight, excessive humidity, extreme cold and
water can damage the operational capabilities of your
system board. Avoid soft surfaces such as beds and
carpeted floors which can hinder air circulation. These
areas also attract static electricity which can damage
some circuits on your system board.
Be sure that 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 recom-
mend that you use a surge protection socket. This will
protect the system board from damage that may result
from a power surge on the 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 G486-EVB system board carefully.
EnergyStarCompliantSystemBoard
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 compo-
nents without causing any signs of physical damage.
You must take extra care in handling the system board
to ensure that no static build-up is present.
Tips in Handling the System Board
1) To prevent electrostatic build-up, leave the board in
its anti-static bag until you are ready to install it.
2) Do all preparation work on a static-free surface with
components facing up.
3) Hold the system board by its edges only. Be careful
not to touch any of the components, contacts or
connections, especially gold contacts on the board.
4) Avoid touching the pins or contacts on all modules
and connectors. Hold modules and connectors by
their edges.
Hardware Installation
Memory Installation
The G486-EVB system board can support 1MB to
64MB of memory using HSIMM. HSIMM is an acro-
nym for High Density Single In-line Memory Module.
A HSIMM consists of RAM chips soldered onto a small
circuit board. A HSIMM connects to the system board
via a 72-pin card-edge connector.
2-2 uInstallation Overview
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