Page 1
G486-EVA
System Board
User’s Manual
- D23240331 -
Page 2
v Copyright 1994, by DFI Inc.
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-EVA is a
trademark of Diamond Flower, Inc. All other product
names mentioned are trademarks or registered trademarks of their respective companies.
Page 3
❖❖
❖
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 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 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.
Page 4
v Table of Contents v
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 ..............................................................
Jumper Settings for the Internal Battery ................
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
2-15
2-15
2-19
2-20
3-1
3-2
3-2
3-5
3-7
3-8
3-9
3-9
3-10
3-11
3-11
3-12
Page 5
Troubleshooting ...........................................................................
4-1
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 .............................
A-1
B-1
C-1
D-1
E-1
F-1
G-1
Page 6
Energy Star Compliant System Board
v Introduction
The G486-EVA 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 peripherals or the entire system, when not in use.
The G486-EVA accommodates all of the Intel 486
TM
family of CPUs. The system board may be equipped
with an 80486SX CPU running at 25/33MHz, an
80486DX CPU running at 33MHz, or an 80486DX2
CPU running at 50/66MHz. It also supports the new
Intel SL Enhanced series of CPUs.
It may also use Intel486TM DX2 OverDrive Processors,
AMD's 486DXL low power CPUs, Cyrix's Cx486DX/
DX2 or Cyrix's Cx486S/S2 CPU.
The G486-EVA uses 256Kx9, 1Mx9 and 4Mx9 SIM
modules. The memory can be configured to five different sizes from 1MB to 32MB. In addition, the
G486-EVA is equipped with three 32-bit VESA
VL-Bus, and six 16-bit and one 8-bit ISA expansion
slots.
1-1 u Introduction
Page 7
Features and Specifications
• Microprocessor
Intel 486SX-25/33, 486DX-33, 486DX2-50/66,
SL Enhanced CPUs, Intel486
OverDrive Processor
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
• Chip Set
EC802G: system and cache controller
EC100: data buffer
TM
G486-EVA
DX2
• BIOS
Award system BIOS
• Cache Memory
128K or 256K
Supports direct map write-back or write-through
cache subsystem
• Memory Onboard
1MB to 32MB
Introduction u 1-2
Page 8
Energy Star Compliant System Board
• DRAM Type
256Kx9, 1Mx9 and 4Mx9
• 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
Package Checklist
The G486-EVA package contains the following items:
• The G486-EVA system board
• One G486-EVA user’s manual
If any of these items are missing or damaged, please
contact your dealer or sales representative for assistance.
1-3 u Introduction
Page 9
v Installation Overview
This chapter summarizes the steps in installing the
G486-EVA 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 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. 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.
G486-EVA
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 recommend 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-EVA system board carefully.
Installation Overview u 2-1
Page 10
Energy Star Compliant System Board
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 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-EVA system board can support 1MB to
32MB of memory using SIMMs. SIMM is an acronym
for Single In-line Memory Module.
2-2 u Installation Overview
Page 11
G486-EVA
A SIMM consists of RAM chips soldered onto a small
circuit board. A SIMM connects to the system board
via a 30-pin card-edge connector.
The SIMM sockets are divided into two banks on the
system board. The G486-EVA system board uses
256Kx9, 1Mx9 and 4Mx9 SIM modules.
A list of approved memory brands and speeds is given in
Appendix A.
You will need 4 to 8 pieces of SIM modules, depending
on the amount of memory you intend to install. Your
system board can be configured with 1MB, 4MB, 8MB,
16MB or 32MB of onboard memory.
When installing the SIM modules, populate Bank 0 first
followed by Bank 1. Failure to do so will cause the
system board to work improperly.
The following table summarizes the bank locations and
modules needed for the corresponding memory sizes.
Each bank consists of four SIMM sockets.
Memory Size Bank 0 Bank 1
1MB 256Kx9 4MB 1Mx9 -
8MB 1Mx9 1Mx9
16MB 1Mx9 1Mx9
16MB 4Mx9 32MB 4Mx9 4Mx9
Installation Overview u 2-3
Page 12
Energy Star Compliant System Board
Pin 1 of the SIMM socket
Bank 1
Bank 0
Locations of the SIMM Sockets
on the G486-EVA System Board
Installing the Modules
SIMMs simply snap into a socket on the system board.
Pin 1 of the SIMM must correspond with Pin 1 of the
socket.
EC100G
EC802G
1
2
2-4 u Installation Overview
Page 13
1. Position the SIM module above the SIMM socket
with the chips of the module facing the center of the
system board.
2. Seat the module at an angle into the bank. Make
sure it is completely seated. Tilt the module upright
until it locks in place in the socket.
Board Configuration
The G486-EVA is designed with jumpers and connectors
onboard. Make sure that the jumpers are set correctly
before installing the system board into your system unit.
JP1
JP2
T10
JP14-JP18
JP21
EC100G
JP23
JP22JP20
JP24
JP34, JP35, JP38
EC802G
JP26
JP28
JP29 JP30
JP25
JP27
JP31
G486-EVA
S1
S2
S3
JP50
JP51
JP52
JP48
JP49
JP40
JP42
JP43
JP46
JP47
D6
Locations of Jumpers and Connectors
on the G486-EVA System Board
Installation Overview u 2-5
Page 14
Energy Star Compliant System Board
Jumper Settings
Jumper Settings for the Internal Battery
JP2
EC100G
EC802G
Location of Jumper JP2 on the G486-EVA System Board
2-6 u Installation Overview
Page 15
G486-EVA
Jumper JP2
Internal Battery Select
The G486-EVA comes with an internal battery. If you
wish to install an external battery, set JP2 pins 1 and 2
to On to disable the internal battery.
321
1-2 On: Disabled
2-3 On: Enabled
321
(Default)
Note:
If you disable the internal battery, you must connect an
external battery to connector JP1 or your system will
lose its CMOS settings when powered off.
The jumpers below are for factory testing only and
should always be set to their default configuration.
Reconfiguring these jumpers will cause problems with
your G486-EVA system board.
Jumper JP14
Off: 2X BOSC (28MHz)
On: CPU CLK1 - Default
Jumper JP28
1-2 On: Default
Installation Overview u 2-7
Page 16
Energy Star Compliant System Board
Jumper Settings for VL-Bus Add-on Boards
EC100G
EC802G
JP34 JP35
Locations of Jumpers JP34 and JP35
on the G486-EVA System Board
2-8 u Installation Overview
Page 17
G486-EVA
Jumper JP34
High Speed Mode for VL-Bus Board
Set Jumper JP34 to Off only if the VESA VL-Bus
add-on board(s) installed in the VL-Bus slots support
Zero Wait State. If you are not sure that your add-on
board(s) support Zero Wait State, set JP34 to On;
otherwise, a system error may occur.
On: Write One Wait State
Off: Write Zero Wait State
(Default)
Jumper JP35
CPU Speed for VL-Bus Board
If a VL-Bus board is installed in the G486-EVA system
board, Jumper JP35 must be set to On if the CPU speed
is greater than 33MHz. Set JP35 to Off if the CPU
speed is less than or equal to 33MHz.
On: CPU Speed > 33MHz
Off: CPU Speed <= 33MHz
(Default)
Installation Overview u 2-9
Page 18
Energy Star Compliant System Board
Jumper Settings for Light and Deep Green
EC100G
EC802G
JP40
Location of Jumper JP40 on the G486-EVA System Board
Jumper JP40
Light/Deep Green Select
The different types of CPUs supported by the
G486-EVA allow you to select from two different
energy saving modes. If you have a standard Intel
486DX, SX, OverDrive Processor or AMD 486DXL,
the G486-EVA will run in light green mode. If you have
an energy saving SL Enhanced Intel 486DX or Cyrix
Cx486S/Cx486S2 CPU, then the G486-EVA will run in
deep green mode. Set Jumper JP40 according to the
type of CPU installed on the board.
2-10 u Installation Overview
Page 19
G486-EVA
On: Light Green
486DX,486SX,
Intel486TM OverDrive
SL Enhanced Intel486TM DX CPU,
Off: Deep Green
Cyrix Cx486S/Cx486S2
Processor, AMD 486DXL
Cache Configuration
The G486-EVA system board can be configured to two
different cache sizes: 128KB and 256KB. 128KB of
cache memory is the default size. Either four or eight
32K x 8 (20ns) SRAM chips are used for cache depending on the size of cache desired. Regardless of the
amount of cache memory installed, one 32K x 8 (20ns)
SRAM is needed for tag RAM to store the cacheable
addresses. The locations of the SRAM sockets on the
system board is shown on the next page.
Cache Size U17/U18/U19/U20 U24/U25/U26/U27 U21
128KB* 32K x 8 (20ns) None 32K x 8 (20ns)
256KB 32K x 8 (20ns) 32K x 8 (20ns) 32K x 8 (20ns)
* Default setting
(Default)
Installation Overview u 2-11
Page 20
Energy Star Compliant System Board
U17 U24
U18
U19
U20
U21
U25
U26
U27
EC100G
EC802G
Locations of the SRAMs on the G486-EVA System Board
2-12 u Installation Overview
Page 21
Jumper Settings for Cache Memory
JP21
JP26
G486-EVA
JP25
JP27
JP20
EC100G
EC802G
Locations of Jumpers JP20, JP21, JP25, JP26 and JP27
on the G486-EVA System Board
Cache Memory Size
Jumpers 128KB* 256KB
JP20 2-3 On 1-2 On
JP21 2-3 On 1-2 On
JP25 Off On
JP26 On On
JP27 On On
* Default setting
Installation Overview u 2-13
Page 22
Energy Star Compliant System Board
JP20 or JP21
JP25, JP26 or JP27
1-2: On
On
1
2
3
1
2
3
2-3: On
Off
2-14 u Installation Overview
Page 23
CPU Installation and Upgrade
The G486-EVA is equipped with a 169-pin PGA socket
at location U22 of the system board, to make upgrading
flexible and easy. Make sure the jumpers are set
correctly before applying power, or you may damage the
CPU or system board.
Jumper Settings for CPUs
G486-EVA
JP23
JP50
S1
S2
S3
JP51
JP52
JP48
JP49
T10
JP17
EC100G
JP22
JP24
EC802G
JP29 JP30
JP31
JP38
Locations of Jumpers JP17, T10, JP22-JP24, JP29-JP31, JP38,
JP48-JP52, S1, S2 and S3 on the G486-EVA System Board
Installation Overview u 2-15
Page 24
Energy Star Compliant System Board
Jumpers JP22-JP24, JP49 and JP51
SMI CPU Type Selection
These jumpers should be set to match the type of the
CPU installed on the G486-EVA system board. These
jumpers will be ignored if an Intel 486SX, 486DX or
Intel486
TM
OverDrive Processor is installed.
SMI CPU Type
SL Enhanced Intel486TM DX*
SL Enhanced Intel486TM SX
Cyrix Cx486DX
Cyrix Cx486DX2
Cyrix Cx486S
Cyrix Cx486S2
AM486DXL
JP22-JP24
JP49 and JP51
JP22
1-2 On
1-2 On
2-3 On
2-3 On
2-3 On
2-3 On
Off
1-2: On
On
JP23
1-2 On
1-2 On
2-3 On
2-3 On
2-3 On
2-3 On
1
2
3
Off
JP24
1-2 On
1-2 On
2-3 On
2-3 On
2-3 On
2-3 On
Off
2-3: On
Off
JP49
Off
Off
Off
Off
Off
Off
On
1
2
3
JP51
Off
Off
Off
Off
Off
Off
On
2-16 u Installation Overview
Page 25
G486-EVA
Jumpers JP17, T10, JP29-JP31, JP48, JP50 and JP52
CPU Type Selection
These jumpers should be set to match the type of the
CPU installed on the G486-EVA system board.
CPU Type
486SX
486DX
Intel486TM OverDrive Processor
SL Enhanced Intel486TM DX*
SL Enhanced Intel486TM SX
Cyrix Cx486DX
Cyrix Cx486DX2
Cyrix Cx486S
Cyrix Cx486S2
AM486DXL
CPU Type
486SX
486DX
Intel486TM OverDrive Processor
SL Enhanced Intel486TM DX*
SL Enhanced Intel486TM SX
Cyrix Cx486DX
Cyrix Cx486DX2
Cyrix Cx486S
Cyrix Cx486S2
AM486DXL
JP17
Off
Off
Off
Off
Off
On
On
On
On
Off
T10
Off
Off
Off
Off
Off
On
On
Off
Off
Off
JP48
Off
Off
Off
Off
Off
On
On
On
On
Off
JP29
2-3 On
1-2 On
1-2 On
1-2 On
2-3 On
1-2 On
1-2 On
2-3 On
2-3 On
1-2 On
JP50
On
On
On
On
On
Off
Off
Off
Off
Off
JP30
Off
2-3 On
2-3 On
2-3 On
Off
2-3 On
2-3 On
Off
Off
2-3 On
JP52
2-3 On
2-3 On
2-3 On
2-3 On
2-3 On
1-2 On
2-3 On
1-2 On
1-2 On
2-3 On
JP31
Off
On
On
On
Off
On
On
Off
Off
On
Installation Overview u 2-17
Page 26
Energy Star Compliant System Board
JP29, JP30, JP52
JP17, JP31, JP48, JP50 and T10
1
2
3
1-2: On
On
1
2
3
2-3: On
Off
Jumpers JP38, S1, S2 and S3
Clock Selection
These jumpers should be set to match the speed of the
CPU installed on the G486-EVA system board.
CPU Speed
25MHz
33MHz*
40MHz
JP38
On
On
On
S1
On
On
On
S2
Off
On
On
S3
Off
On
Off
* Default setting
On
2-18 u Installation Overview
Off
Page 27
Installing Upgrade CPUs
The G486-EVA is equipped with a 169-pin PGA (Pin
Grid Array) socket at location U22 of the system board.
The location of the PGA socket on the system board is
shown below.
G486-EVA
EC100G
EC802G
PGA
Socket
U22
Pin 1 of the socket
Location of the PGA Socket on the G486-EVA System Board
To install an upgrade CPU, position the upgrade CPU
above the socket. Make sure pin 1 of the CPU is
aligned with pin 1 of the socket. Lower the chip until
the pins are inserted properly in their corresponding
holes.
Installation Overview u 2-19
Page 28
Energy Star Compliant System Board
Installing the System Board
Before installing the system board into your system unit,
you should prepare the tools you will use:
You will need:
• one medium size, flat-bladed screwdriver
• one medium Philips screwdriver
• one nutdriver, 3/16" or 5mm
• one grounded wriststrap is strongly
recommended to protect the board against static
electricity discharges.
Step 1
Unlock your system unit. Turn off the power and disconnect all power cords and cables.
Step 2
Remove the system unit cover. Refer to the manufacturer's instructions if necessary.
Step 3
Remove expansion cards seated in any of the expansion
slots and detach all connectors from the old system
board.
Step 4
Loosen the screws holding the original system board and
remove the board from the system. Save the screws.
2-20 u Installation Overview
Page 29
Step 5
Step 6
Step 7
Step 8
G486-EVA
Insert the SIM modules into the SIMM banks on the
G486-EVA. The quantity and location of the SIM
modules are dependent upon the memory configuration
and type of modules you intend to use.
Set the appropriate jumpers.
Install the prepared G486-EVA system board into the
case and replace the screws.
Reinstall all cards and connectors and replace the system
unit cover. Reconnect all power cords and cables.
Installation Overview u 2-21
Page 30
Energy Star Compliant System Board
v Initial Setup Program
After you power up your system, the BIOS message
appears on your screen and the memory count begins.
After the memory test, the following message will
appear on the screen:
Press CTRL-ALT-ESC/DEL to enter setup
If you want to enter Setup and the message disappears
before you respond, restart your system or press the
"Reset" button. You may also restart the system by
pressing the <Ctrl> <Alt> <Del> keys. If you do not
press the above keys at the correct time, the following
error message will appear:
Press F1 to continue, Ctrl-Alt-Esc or Del to enter Setup
If you have set a password and selected "System" in the
Security Option of the BIOS Feature Setup menu, you
will be prompted for the password everytime the system
is rebooted or any time you try to enter Setup. Type in
the correct password and press <Enter>.
If you selected "Setup" in the Security Option, you will
be prompted for the password only when you try to
enter Setup. Refer to the "BIOS Features Setup" section for more information.
3-1 u Initial Setup Program
Page 31
Award BIOS CMOS Setup Utility
Press <Ctrl> <Alt> <Esc> or <Del> to enter the Setup
utility. A screen similar to the one below will appear.
ROM ISA BIOS
CMOS SETUP UTLITY
AWARD SOFTWARE, INC.
G486-EVA
STANDARD CMOS SETUP
BIOS FEATURES SETUP
CHIPSET FEATURES SETUP
POWER MANAGEMENT SETUP
LOAD BIOS DEFAULTS
LOAD SETUP DEFAULTS
Esc
: Quit
F10
: Save & Exit Setup
Use the arrow keys to highlight the option you want and
press <Enter>.
Standard CMOS Setup
Use the arrow keys to highlight the "Standard CMOS
Setup" and press <Enter>, a screen similar to the one on
the next page will appear.
PASSWORD SETTING
IDE HDD AUTO DETECTION
SAVE & EXIT SETUP
EXIT WITHOUT SAVING
: Select Item
: Change Color(Shift) F2
Time, Date, Hard Disk Type...
Initial Setup Program u 3-2
Page 32
Energy Star Compliant System Board
Date (mm:dd:yy:) Mon, 01 Jan 1994
Time (hh:mm:ss) 00:00:00
: 10 (20MB)
Drive C
: 35 (110MB)
Drive D
: 1.2MB, 5-1/4 in.
Drive A
: 1.44MB, 3-1/2 in.
Drive B
: EGA/VGA
Video
: All Errors
Halt on
ROM ISA BIOS
STANDARD CMOS SETUP
AWARD SOFTWARE, INC.
CYLS.
HEADS
820
1024
PRECOMP
3
13
LANDZONE
None
None
Base Memory :
Extended Memory :
Expanded Memory :
Other Memory :
Total Memory :
820
1023
SECTORS
17
17
640K
1024K
0K
384K
2048K
EscF1: Quit
: Help
: Select Item
: Change Color(Shift) F2
PU/PD/+/-F3: Modify
: Toggle Calendar
Use the arrow keys to move the highlight bar to the
option you wish to change or modify. Use the <Page
Up>, <Page Down>, <+> or <-> keys to make the
corresponding changes.
Date and Time
Sets the time and date for the system. Press <F3> for
the calendar.
Drive C and Drive D
If you have added a hard drive, you must select the
appropriate type for the drive. The G486-EVA has 46
pre-set types and one user-definable type. Use the
<Page Up> or <Page Down> keys to select the appropriate type for the drive.
The table in Appendix G gives a complete listing of the
available drive types. Any given hard drive must be set
to one specific drive-type number. Please refer to your
hard drive documentation to find the appropriate type
number.
3-3 u Initial Setup Program
Page 33
G486-EVA
If none of the pre-set types is appropriate for your hard
drive, choose "User," which is the user-definable type.
To use this type, highlight either hard disk C or D,
depending on your hard drive configuration. Use the
arrow keys until type "User" is showing. Fill in all the
parameters as specified by the drive manufacturer. If
either of the drives is not present, select "None" and
press <Enter>.
Drive A and Drive B
These options are used to select the type of floppy disk
drives installed in your system. If either of the drives is
not present, select "None." Make sure you choose the
correct drive type; otherwise, your system might improperly format diskettes.
Video
This is used to select the type of video adapter installed
in your system.
Halt on
This option selects when the system will halt if an error
is detected during power up.
No Errors: The system boot will not stop for any
errors detected.
All Errors: The system will stop whenever the BIOS
detected a non-fatal error.
All, But Keyboard: The system will stop for any
errors except a keyboard error.
All, But Diskette: The system will stop for any
errors except a disk error.
Initial Setup Program u 3-4
Page 34
Energy Star Compliant System Board
All, But Disk/Key: The system will stop for any
Memory
The lower right hand corner shows the base memory
size, extended memory size, expanded memory size and
the other memory size of your system. You cannot alter
these items; your computer automatically detects and
displays them.
The Other Memory size refers to the memory located
between 640K and 1024K. This is the memory address
space used for different applications. DOS uses this area
to load device drivers to keep as much base memory free
for application programs. Most use this for the Shadow
RAM.
When you are through making changes in the Standard
CMOS Setup, press <Esc> to return to the main menu.
BIOS Features Setup
errors except a keyboard or disk
error.
Use the arrow keys to highlight the "BIOS Features
Setup" and press <Enter>, a screen similar to the one on
the next page will appear.
3-5 u Initial Setup Program
Page 35
G486-EVA
ROM ISA BIOS
BIOS FEATURES SETUP
AWARD SOFTWARE, INC.
Virus Warning
CPU Internal Cache
External Cache
Quick Power On Self Test
Boot Sequence
Swap Floppy Drive
Boot Up Floppy Seek
Boot Up NumLock Status
Boot Up System Speed
IDE HDD Block Mode
IDE 32-bit transfer
Gate A20 Option
Memory Parity Check
Typematic Rate Setting
Typematic Rate (Chars/Sec)
Typematic Delay (Msec)
Security Option
: Enabled
: Enabled
: Enabled
: Enabled
: C, A
: Disabled
: Disabled
: On
: High
: Disabled
: Disabled
: Fast
: Enabled
: Disabled
: 6
: 250
: Setup
System BIOS Shadow
Video BIOS Shadow
C8000-CBFFF Shadow
CC000-CFFFF Shadow
D0000-D3FFF Shadow
D4000-D7FFF Shadow
D8000-DBFFF Shadow
DC000-DFFFF Shadow
E0000-E3FFF Shadow
E4000-E7FFF Shadow
E8000-EBFFF Shadow
EC000-EFFFF Shadow
ESC
: Quit
F1
: Help
F5
: Old Values
F6
: Load BIOS Defaults
F7
: Load Setup Defaults
PU/PD/+/-
(Shift) F2
: Enabled
: Enabled
: Disabled
: Disabled
: Disabled
: Disabled
: Disabled
: Disabled
: Disabled
: Disabled
: Disabled
: Disabled
: Select Item
: Modify
: Color
The Virus Warning option may be set to "enabled" or
"disabled." When enabled, the BIOS issues a warning
when any program or virus sends a Disk Format command or attempts to write to the boot sector of the hard
disk drive.
The IDE HDD Block Mode and IDE 32-bit Transfer
options are functions for ISA IDE. These options may
be "Enabled" or "Disabled." However, if your system is
using a VESA IDE, these options should always be set
to "Disabled."
If you choose "System" in the Security Option, you will
be prompted for a password every time you cold boot
your system or access setup. If you choose "Setup,"
you will be prompted for a password only when trying
to access setup.
Use the arrow keys to move the highlight bar to the
option you wish to change or modify. Use the <Page
Up>, <Page Down>, <+> or <-> keys to make the
corresponding changes.
Initial Setup Program u 3-6
Page 36
Energy Star Compliant System Board
If the changes you make are incorrect or you change
your mind, press <F6> or <F7> to return to the default
settings. Press <Esc> after making the changes to return
to the main menu.
Chipset Features Setup
The G486-EVA uses the EFAR EC802G chipset. The
Chipset Features Setup allows you to modify some
functions to optimize system performance.
If you press <Enter>, a screen similar to the one below
will appear.
CHIPSET FEATURES SETUP
AWARD SOFTWARE, INC.
Auto Configuration
Cache write wait state
External cache burst read
Cache update policy
CPU cache update policy
Video BIOS Cacheable
DRAM R/W wait state
AT bus clock selection
AT I/O recovery time
IDE I/O recovery time
Extra AT cycle wait state
DMA frequency select
Local device wait state
: Enabled
: 1 W/S
: 3-1-1-1
: Write-Bk
: Write-Th
: Disabled
: Turbo
: CLK1/3
: 6 AT CYLs
: AT I/O WS
: Disabled
: SYSCLK/2
: 0WS
ROM ISA BIOS
IDE hard disk prefetch
IDE data transfer speed
IDE turbo data transfer
ESC
F1
F5
F6
F7
: Quit
: Help
: Old Values
: Load BIOS Defaults
: Load Setup Defaults
PU/PD/+/-
(Shift) F2
: Enabled
: Slow
: Disabled
: Select Item
: Modify
: Color
The IDE Hard Disk Prefetch, IDE Turbo Read and IDE
Turbo Write options are functions for ISA IDE. These
options may be "Enabled" or "Disabled." However, if
your system is using a VESA IDE, these options should
always be set to "Disabled."
Use the arrow keys to move the highlight bar to the
option you wish to change or modify. Use the <Page
3-7 u Initial Setup Program
Page 37
Up>, <Page Down>, <+> or <-> keys to make the
corresponding changes.
If the changes you make are incorrect or you change
your mind, press <F6> or <F7> to return to the default
settings. Press <Esc> after making the changes to return
to the main menu.
Power Management Setup
Use the arrow keys to highlight the "Power Management
Setup" and press <Enter>, a screen similar to the one
below will appear.
POWER MANAGEMENT SETUP
AWARD SOFTWARE, INC.
Power Management
Standby Mode Timer
Suspend Mode Timer
Video Standby Timer
HDD Standby Timer
Suspend Mode Speed
Standby Mode Speed
DMA Request Check
Keyboard/Mouse Check
Interrupt Check
Parallel Port Check
Serial Port Check
Hard Disk Check
Video Write Check
Local Master Check
Reset V-Timer Event
: Max Power Saving
: 16 Sec
: 4 Min
: 8 Min
: 1 Min
: STOP CLK2
: 1/4 Speed
: Enabled
: Enabled
: Enabled
: Disabled
: Enabled
: Enabled
: Disabled
: Enabled
: Keyboard/Mouse
ROM ISA BIOS
ESC
F1
F5
F6
F7
: Quit
: Help
: Old Values
: Load BIOS Defaults
: Load Setup Defaults
PU/PD/+/-
(Shift) F2
: Select Item
: Modify
: Color
G486-EVA
Choosing "User Defined" in the Power Management
option will allow you to set the time of the Standby
Mode Timer, Suspend Mode Timer, Video Standby
Timer, HDD Standby Timer, Suspend Mode Speed and
Standby Mode Speed. "Min Power Saving" and "Max
Power Saving" will show the minimum and maximum
value of these options. Choose "Disabled" if you do not
wish your system to enter the Standby mode.
Initial Setup Program u 3-8
Page 38
Energy Star Compliant System Board
Use the arrow keys to move the highlight bar to the
option you wish to change or modify. Use the <Page
Up>, <Page Down>, <+> or <-> keys to make the
corresponding changes.
Load BIOS Defaults
If, for some reason, the CMOS becomes corrupted, the
system can be reconfigured with the default values
stored in the ROM chips. The BIOS Setup default
values should provide optimum performance for the
system. You should use these values unless you are
possibly having hardware problems.
Highlight this option on the main menu and press <Enter>. The message below will appear.
Load BIOS Defaults (Y/N)? N
Type "Y" and press <Enter> to return to the BIOS setup
default values. After pressing <Enter>, you will be
returned to the main menu.
Load Setup Defaults
The Setup defaults are similar to the BIOS Setup defaults. These defaults are the most stable values for the
system and should be used if you are possibly having
hardware problems.
Highlight this option on the main menu and press <Enter>. The message below will appear.
Load Setup Defaults (Y/N)? N
3-9 u Initial Setup Program
Page 39
Type "Y" and press <Enter> to return to the Setup
default values. After pressing <Enter>, you will be
returned to the main menu.
Password Setting
If you want to set a password, make sure that the
Security Option under the BIOS Features Setup is set to
"System" or "Setup." Refer to the BIOS Features Setup
option for more information.
Use the arrow keys to highlight the Password Setting
option and press <Enter>. The message below will
appear.
Type in the password. You are limited to eight characters. Type in a password that is eight characters long or
shorter. When done, the message below will appear:
G486-EVA
Enter Password:
Confirm Password:
You are asked to verify the password. Type in exactly
the same password. If you type in a wrong password,
you will be prompted to enter the correct password
again. Otherwise, enter a new password.
To delete or disable the password function, simply press
<Enter> instead of typing in a new password.
Press the <Esc> key to return to the main menu.
Initial Setup Program u 3-10
Page 40
Energy Star Compliant System Board
IDE HDD Auto Detection
This option detects the hard disk parameters for the hard
disk drives installed in your system. Highlight this
option and press <Enter>. A screen similar to the one
below will appear.
CMOS SETUP UTILITY
AWARD SOFTWARE, INC.
CYLS.
Drive C : (40MB)
The screen displays the parameters detected and allows
you to accept or reject the parameters. Type "Y" and
press <Enter> to accept the parameters or press <Esc>
to abort. If you select "Y," the parameters of the hard
disk will be displayed in the Standard CMOS Setup.
980
Do you accept this drive C (Y/N)? N
ROM ISA BIOS
HEADS5PRECOMP
65535
ESC : Skip
LANDZONE
979
SECTORS
17
Save & Exit Setup
When all the changes have been made, highlight "Save &
Exit Setup" and press <Enter>. The message below will
appear:
Save to CMOS and Exit (Y/N)? N
3-11 u Initial Setup Program
Page 41
Type "Y" and press <Enter>. The following message
will appear:
Type "Y" and press <Enter>. The modifications you
have made will be written into the CMOS memory, and
the system will reboot. You will once again see the
initial diagnostics on the screen. If you wish to make
additional changes to the setup, press <Ctrl> <Alt>
<Esc> or <Del> after memory testing is done.
Exit Without Saving
When you do not want to save the changes you have
made, highlight this option and press <Enter>. The
message below will appear:
Type "Y" and press <Enter>. The system will reboot
and you will once again see the initial diagnostics on the
screen. If you wish to make any changes to the setup,
press <Ctrl> <Alt> <Esc> or <Del> after memory
testing is done.
G486-EVA
Reboot System (Y/N)? N
Quit Without Saving (Y/N)? N
Initial Setup Program u 3-12
Page 42
Energy Star Compliant System Board
v Troubleshooting
If you experience difficulty with the G486-EVA system
board, please refer to the checklist below. If you still
cannot isolate the problem, please contact your dealer.
1) Check the jumper settings to ensure that the jumpers
are properly set. If in doubt, refer to the “Board
Configuration” section.
2) Verify that all SIM modules are seated securely into
the bank sockets.
3) Make sure that the SIM modules are in the correct
location.
4) Check that all populated memory banks are
completely filled. If not, fill them completely.
5) If your board fails to function, place the board on a
flat surface and seat all socketed components (gently
press each component into the socket).
6) Recheck the CMOS settings.
4-1 u Troubleshooting
Page 43
v Appendix A: Types of Modules
The G486-EVA system board allows you to populate
memory with 256Kx9, 1Mx9, and 4Mx9 SIM modules.
The following modules have been tested with this board.
Most untested brands will work but a few may fail to do
so.
For SIM 256Kx9 Modules
Brand Chip Number
Samsung KM44C256AJ-8
Panasonic MN41C4256-08
Hitachi HM514256AJP8 (80ns)
For SIM 1Mx9 Modules
Brand Chip Number
Panasonic MN41C1000SJ-08
Fujitsu 81C1000-80
NEC MC421000A9A-80
OKI M511000A-80J
Motorola MCM511000AJ80
G486-EVA
For SIM 4Mx9 Modules
Brand Chip Number
Hitachi HB56A49BR-8AL
Appendix A u A-1
Page 44
Energy Star Compliant System Board
v Appendix B: System Error Report
POST (hex)
C0
1
2
3
4
Name
Turn off chipset
cache
Processor test 1
Processor test 2
Initialize chips
Test memory refresh
toggle
Description
OEM specific-cache control.
Processor status (1FLAGS) verification.
Test the following processor status flags
carry, zero, sign, overflow.
The BIOS will set each of these flags,
verify they are set, then turn each flag
off and verify it is off.
Read/Write/Verify all CPU registers
except SS,SP and BP with data pattern
FF and 00.
Disable NMI, PIE, AIE, UEI, SQWV.
Disable video, parity checking, DMA.
Reset math coprocessor.
Clear all page registers, CMOS
shutdown byte.
Initialize timer 0, 1 and 2, including set
EISA timer to a known state.
Initialize DMA controllers 0 and 1.
Initialize interrupt controllers 0 and 1.
Initialize EISA extended registers.
RAM must be periodically refreshed in
order to keep the memory from decaying.
This function assures that the memory
refresh function is working properly.
5
6
7
B-1 u Appendix B
Blank video, initialize
keyboard
Reserved
Test CMOS interface
and battery status
Keyboard controller initialization.
Verifies CMOS is working correctly,
detects bad battery.
Page 45
G486-EVA
POST (hex)
BE
C1
C5
C6
8
9
A
B
Name
Chipset default
initialization
Memory presence
test
Early shadow
Cache presence
test
Setup low memory
Early cache
initialization
Setup interrupt
vector table
Test CMOS RAM
checksum
Description
Program chipset registers with power on
BIOS defaults.
OEM Specific-Test to size on-board
memory.
OEM Specific-Early Shadow enable for
fast boot.
External cache size detection.
Early chip set initialization.
Memory presence test.
OEM chip set routines.
Clear low 64K of memory.
Test first 64K memory.
Cyrix CPU initialization.
Cache initialization.
Initialize first 120 interrupt vectors with
SPURIOUS_INT_HDLR and initialize
INT 00h-1Fh according to INT_TBL.
Test CMOS RAM checksum, if bad, or
insert key pressed, load defaults.
C
D
E
Initialize keyboard
Initialize video
interface
Test video
memory
Detect type of keyboard controller
(optional).
Set NUM_LOCK status.
Detect CPU clock.
Read CMOS location 14h to find out
type of video in use.
Detect and initialize video adapter.
Test video memory, write sign-on
message to screen.
Setup shadow RAM - Enable shadow
according to Setup.
Appendix B u B-2
Page 46
Energy Star Compliant System Board
POST (hex)
F
10
11
12-13
14
15
16
17
18
Name
Test DMA
controller 0
Test DMA
controller 1
Test DMA page
registers
Reserved
Test timer counter 2
Test 8259-1 mask
bits
Test 8259-2 mask
bits
Test stuck 8259's
interrupt bits
Test 8259 interrupt
functionality
Description
BIOS checksum test.
Keyboard detect and initialization.
Test DMA page registers.
Test 8254 timer 0 counter 2.
Verify 8259 channel 1 masked interrupts by
alternately turning off and on the interrupt
lines.
Verify 8259 channel 2 masked interrupts by
alternately turning off and on the interrupt
lines.
Turn off interrupts then verify no interrupt
mask register is on.
Force an interrupt and verify the interrupt
occurred.
19
1A
1B-1E
1F
B-3 u Appendix B
Test stuck NMI
bits (Parity/IO check)
Reserved
Set EISA mode
Verify NMI can be cleared.
Display CPU clock.
If EISA non-volatile memory checksum is
good, execute EISA initialization. If not,
execute ISA tests and clear EISA mode flag.
Test EISA Configuration Memory Integrity
(checksum & communication interface).
Page 47
G486-EVA
POST (hex)
20
21-2F
30
31
32
33-3B
3C
3D
Name
Enable slot 0
Enable slots 1 - 15
Size base and
extended memory
Test base and
extended memory
Test EISA extended
memory
Reserved
Setup enabled
Initialize and install
mouse
Description
Initialize slot 0 (system board).
Initialize slots 1 through 15.
Size base memory from 256K to 640K and
extended memory above 1MB.
Test base memory from 256K to 640K and
extended memory above 1MB using various
patterns.
Note: This will be skipped in EISA mode and
can be "skipped" with ESC key in ISA mode.
If EISA mode flag is set then test EISA
memory found in slots initialization.
Note: This will be skipped in ISA mode and
can be "skipped" with Esc key in EISA
mode.
Detect if mouse is present, initialize mouse,
install interrupt vectors.
3E
3F
BF
40
41
Setup cache
controller
Reserved
Chipset initialization
Initialize floppy drive
and controller
Initialize cache controller.
Program chipset registers with Setup values.
Display virus protest disable or enable.
Initialize floppy disk drive controller and any
drives.
Appendix B u B-4
Page 48
Energy Star Compliant System Board
POST (hex)
42
43
44
45
46
47
48-4D
4E
4F
50
51
Name
Initialize hard drive
and controller
Detect and initialize
serial/parallel ports
Reserved
Detect and initialize
math coprocessor
Reserved
Reserved
Reserved
Manufacturing
POST Loop or
Display Messages
Security check
Write CMOS
Pre-boot enable
Description
Initialize hard drive controller and any drives.
Initialize any serial and parallel ports (also
game port).
Initialize math coprocessor.
Reboot if manufacturing POST loop pin is
set. Otherwise display any messages
(i. e. any non-fatal errors that were detected
during POST) and enter Setup.
Ask password security (optional).
Write all CMOS values back to RAM and
clear screen.
Enable parity checker.
Enable NMI, enable cache before boot.
52
53
60
61
B-5 u Appendix B
Initialize option
ROMs
Initialize time value
Setup virus protect
Set boot speed
Initialize any option ROMs present from
C8000h to EFFFFh.
Note: When FSCAN option is enabled, will
initialize from C8000h to F7FFFh.
Initialize time value in 40h: BIOS area.
Setup virus protect according to Setup.
Set system speed for boot.
Page 49
G486-EVA
POST (hex)
62
63
B0
B1
E1-EF
FF
Name
Setup NumLock
Boot attempt
Spurious
Unclaimed NMI
Setup pages
Boot
Description
Setup NumLock status according to Setup.
Set low stack.
Boot via INT 19h.
If interrupt occurs in protected mode.
If unmasked NMI occurs, display
Press F1 to disable NMI, F2 reboot.
E1-Page 1, E2-Page 2, etc.
Appendix B u B-6
Page 50
Energy Star Compliant System Board
v Appendix C: Memory & I/O Maps
Memory Address Map
Address Name Function
0000000 to 640K System System Board Memory
009FFFF Board RAM
00A0000 to 128K Video Reserved for Graphics Display
00BFFFF Display Memory Memory
00C0000 to 192K I/O Reserved for ROM on I/O
00EFFFF Expansion ROM Adapter Card
00F0000 to 64K ROM on System Board BIOS
00FFFFF the System Board
0100000 to Maximum System Board Memory
3FFFFFF Memory 63M
C-1 u Appendix C
Page 51
I/O Address Map
I/O Address Function
000-01F DMA Controller 1, 8237A-5
020-03F Interrupt Controller 1, 8259A, Master
040-05F Timer, 8254-2
060-06F 8742 (Keyboard Controller)
070-07F Real-time Clock, NMI
080-09F DMA Page Memory, 74LS612
0A0-08F Interrupt Controller 2, 8259A
0C0-0DF DMA Controller 2, 8237A-5
0E8 Shadow RAM and Cache Control Bit
0F0 Clear Numeric Processor
0F1 Reset Numeric Processor Extension
0F8-OFF Numeric Processor Extension
1F0-1F8 Fixed Disk
200-207 Game I/O
278-27F Parallel Printer Port 2
2F8-2FF Serial Port 2
300-31F Prototype Card
360-36F Reserved
378-37F Parallel Printer Port 1
380-38F SDLC, Bisynchronous 2
3A0-3AF Bisynchronous 1
3B0-3BF Monochrome Display and Printer Adapter
3C0-3CF Reserved
3D0-3DF Color/Graphics Monitor Adapter
3F0-3F7 Diskette Controller
3F8-3FF Serial Port 1
G486-EVA
(Non-maskable Interrupt) Mask
Extension Busy
Note:
The I/O address hex 000 to 0FF are reserved for the
system board I/0. Hex 100 to 3FF are available on the
I/O channels.
Appendix C u C-2
Page 52
Energy Star Compliant System Board
v Appendix D: 16-Bit ISA I/O Pin Assignments
B
Gnd
Reset Drv
+5V DC
IRQ9
-5V DC
DRQ2
-12V DC
OWS
+12V DC
Gnd
-SEMEMW
-SEMEMR
-IOW
-IOR
-Dack3
-DRQ3
-Dack1
DRQ1
-Refresh
CLK
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
-Dack2
Bale
+5V DC
OSC
Gnd
-Mem CS16
-I/O CS16
IRQ10
IRQ11
IRQ12
IRQ13
IRQ14
-Dack0
DRQ0
-Dack5
DRQ5
-Dack6
DRQ6
-Dack7
DRQ7
+5V DC
-Master
Gnd
T/C
D
- 01 -
- 02 -
- 03 -
- 04 -
- 05 -
- 06 -
- 07 -
- 08 -
- 09 -
- 10 -
- 11 -
- 12 -
- 13 -
- 14 -
- 15 -
- 16 -
- 17 -
- 18 -
- 19 -
- 20 -
- 21 -
- 22 -
- 23 -
- 24 -
- 25 -
- 26 -
- 27 -
- 28 -
- 29 -
- 30 -
- 31 -
- 01 -
- 02 -
- 03 -
- 04 -
- 05 -
- 06 -
- 07 -
- 08 -
- 09 -
- 10 -
- 11 -
- 12 -
- 13 -
- 14 -
- 15 -
- 16 -
- 17 -
- 18 -
A
-I/O Chck
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SD0
-I/O Chrdy
AEN
SA19
SA18
SA17
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA9
SA8
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SA0
C
SBHE
LA23
LA22
LA21
LA20
LA19
LA18
LA17
-Memr
-Memw
SD08
SD09
SD10
SD11
SD12
SD13
SD14
SD15
D-1 u Appendix D
Page 53
G486-EVA
v Appendix E: VL-Bus I/O Pin Assignments
Component Side Solder Side
B
DAT00
DAT02
DAT04
DAT06
DAT08
DAT10
DAT12
DAT14
DAT16
DAT18
DAT20
DAT22
DAT24
DAT26
DAT28
DAT30
ADR31
ADR29
ADR27
ADR25
ADR23
ADR21
ADR19
ADR17
ADR15
ADR13
ADR11
ADR09
ADR07
ADR05
ADR03
ADR02
RESET#
RDYRTN#
BRDY#
BLAST#
LBS16#
GND
Vcc
GND
Vcc
GND
GND
Vcc
GND
D/C#
M/IO#
W/R#
GND
IRQ9
ID0
ID1
GND
LCLK
Vcc
- 01 -
- 02 -
- 03 -
- 04 -
- 05 -
- 06 -
- 07 -
- 08 -
- 09 -
- 10 -
- 11 -
- 12 -
- 13 -
- 14 -
- 15 -
- 16 -
- 17 -
- 18 -
- 19 -
- 20 -
- 21 -
- 22 -
- 23 -
- 24 -
- 25 -
- 26 -
- 27 -
- 28 -
- 29 -
- 30 -
- 31 -
- 32 -
- 33 -
- 34 -
- 35 -
- 36 -
- 37 -
- 38 -
- 39 -
- 40 -
- 41 -
n/c
- 42 -
- 43 -
- 44 -
- 45 -
- 48 -
- 49 -
- 50 -
- 51 -
- 52 -
- 53 -
- 54 -
- 55 -
- 56 -
- 57 -
- 58 -
A
DAT01
DAT03
GND
DAT05
DAT07
DAT09
DAT11
DAT13
DAT15
GND
DAT17
Vcc
DAT19
DAT21
DAT23
DAT25
GND
DAT27
DAT29
DAT31
ADR30
ADR28
ADR26
GND
ADR24
ADR22
Vcc
ADR20
ADR18
ADR16
ADR14
ADR12
ADR10
ADR08
GND
ADR06
ADR04
WBACK#
BE0#
Vcc
BE1#
BE2#
GND
BE3#
ADS#
LRDY#
LDEV<x>#
LREQ<x>#
GND
LGNT<x>#
Vcc
ID2
ID3
ID4
LKEN#
LEADS#
Note:
Side "A" of the connector is the add-in board
component side.
Side "B" of the connector is the add-in board solder
side.
Appendix E u E-1
Page 54
Energy Star Compliant System Board
Pin Name No. LBC1LBC2LBM3LBT
ADR<31..2> 30 O I O I
ADS# 1 O I O I
BE<3..0> 4 O I O I
BLAST# 1 O I O I
BRDY# 1 I O I O
D/C# 1 O I O I
DAT<31..0> 32 I/ O I/ O I/ O I/O
ID<4..0> 5 O O I I
IRQ9 1 I I O O
LBS16# 1 I O I O
LCLK 1 O O I I
LDEV<x>#
LEADS# 1 O I O I
LGNT<x>#
4
4
1 I N/A N/A O
1OOI N/A
LKEN# 1 O O I I
LRDY# 1 I I N/A O
LREQ<x>#
4
1IIOO
M/IO# 1 O I O I
RDYRTN# 1 O O I I
RESET# 1 O O I I
W/R# 1 O I O I
WBACK# 1 O O I N/A
(power) 8
(ground) 14
(reserved) 1
Total per slot 112
1
Direction of signals for the LBC if the host CPU or a system I/O bus
master is active.
2
Direction of signals for the LBC if an LBM is active.
3
Direction of signals for any LBM while it owns the VL-Bus.
4
One unique signal per slot or device.
Note:
LBC = VL Local Bus Controller
LBM = VL Local Bus Master
LBT = VL Local Bus Target
E-2 u Appendix E
Page 55
G486-EVA
v Appendix F: Connector Pin Assignments
Connector JP1
External Battery Connector
Pin
1
2
3
4
Connector JP42
Power LED/Keylock Connector
Pin Function
1 LED Signal
2 Reserved
3 Ground
4 Keylock Signal
5 Ground
Function
Voltage
Reserved
Ground
Ground
Appendix F u F-1
Page 56
Energy Star Compliant System Board
Connector JP43
Speaker Connector
Pin
1
2
3
4
Connector D6
Standby Mode LED
Pin
1
2
Jumper JP46
Standby Mode Switch Connector
Pin
Function
Signal
Connector to Buzzer
Ground
+5V
Function
Ground
Signal
Function
F-2 u Appendix F
1
2
Ground
Signal
Page 57
Connector JP47
Reset Switch Connector
G486-EVA
Pin Function
1 Reset
2 Ground
Appendix F u F-3
Page 58
Energy Star Compliant System Board
v Appendix G: Award BIOS Hard Disk Table
Type
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Size
Cylinders Heads Sectors
(MB)
10
20
30
62
46
20
30
30
112
20
35
49
20
42
20
40
56
59
30
42
30
10
40
76
71
111
152
306
615
615
940
940
615
462
733
900
820
855
855
306
733
612
977
977
1024
733
733
306
977
1024
1224
1224
1224
1024
4
4
6
8
6
4
8
5
15
3
5
7
8
7
4
5
7
7
5
7
5
4
5
9
7
11
15
17
17
17
17
17
17
17
17
17
17
17
17
17
17
(Reserved)
17
17
17
17
17
17
17
17
17
17
17
17
17
Write
Precomp
128
300
300
512
512
None
256
None
None
None
None
None
128
None
0
300
None
512
300
300
300
0
None
None
None
None
None
Land
Zone
305
615
615
940
940
615
511
733
901
820
855
855
319
733
663
977
977
1023
732
732
733
336
976
1023
1223
1223
1223
Example
Model
TEAC SD510,
MMI 112, 5412
Seagate ST225,
ST4026
Seagate ST125,
Tandon TM262
Tandon TM 703
Disctron 526,
MMI M125
Microscience HH725,
Syquest 3250, 3425
Seagate ST4038
Seagate ST4051
Seagate ST4096
Maxtor 2085
Maxtor 2140,
Priam S14
Maxtor 2190,
Priam S19
G-1 u Appendix G
Page 59
Type
Size
Cylinders Heads Sectors
(MB)
Write
Precomp
Land
Zone
G486-EVA
Example
Model
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
User
68
93
83
69
85
102
110
119
17
136
114
40
42
65
40
61
100
203
1024
918
925
1024
1024
1024
1024
1024
1024
1024
918
820
1024
1024
809
809
776
684
11
11
10
12
13
14
16
15
16
8
9
2
6
5
5
6
6
8
17
17
17
17
17
17
17
17
17
17
17
17
17
26
17
26
33
38
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
Maxtor 1085,
Micropolis 1325
Maxtor 1105 1120,
4780
Maxtor 1170
CDC 9415
926
Maxtor 1140, 4380
Seagate ST251
820
Seagate 4053
Miniscribe 3053/6053
Miniscribe 3053/6053
RLL
Miniscribe 3650
852
Miniscribe 3675 RLL
852
Conner CP3104
775
Conner CP3204
685
Appendix G u G-2
Page 60
Page 61
G486-EVA
System Board
User’s Manual
- 23240331 -
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