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Seanix Yukon HX User manual
Yukon HX
Motherboard
User Manual
Ver 2.0
Manufactured in Canada by Seanix Technology Inc.
Seanix Technology Inc. makes no warranty of any kind with regard to this material,
including, but not limited to, the implied warranties of merchantability and fitness for a
particular purpose. Seanix assumes no responsibility for any errors that may appear in
this document. Seanix makes no commitment to update nor to keep current the
information contained in this document. No part of this document may be copied or
reproduced in any form or by any means without prior written consent of Seanix.
† Pentium is a registered trademark of Intel Corporation.
AMI is a registered trademark of American Megatrends Inc.
† Third-party brands and trademarks are the property of their respective owners.
Copyright  1997, Seanix Technology Inc.
Table of Contents
PRODUCT DESCRIPTION ................................................................................................................................ 1
BOARD LAYOUT.................................................................................................................................................. 1
FEATURE SUMMARY............................................................................................................................................ 2
CENTRAL PROCESSING UNIT ................................................................................................................................ 2
MEMORY ............................................................................................................................................................ 3
CACHE MEMORY ................................................................................................................................................ 3
IDE PERIPHERAL INTERFACE............................................................................................................................... 3
SUPER I/O .......................................................................................................................................................... 3
SYSTEM BIOS .................................................................................................................................................... 4
UNIVERSAL SERIAL BUS (USB) OPTION. .............................................................................................................. 5
EXPANSION SLOTS .............................................................................................................................................. 5
SYSTEM SECURITY .............................................................................................................................................. 5
KEYBOARD/MOUSE CONTROLLER ....................................................................................................................... 6
REAL-TIME CLOCK AND CMOS RAM ................................................................................................................. 6
FAN CONNECTOR ................................................................................................................................................ 6
SPEAKER ............................................................................................................................................................ 6
USING THE BIOS SETUP PROGRAM............................................................................................................. 7
RECORD THE SETUP CONFIGURATION .................................................................................................................. 7
AMI BIOS SETUP MENU OVERVIEW ................................................................................................................... 7
OVERVIEW OF THE SETUP KEYS ........................................................................................................................... 9
STANDARD CMOS SETUP ................................................................................................................................. 11
ADVANCED CMOS SETUP................................................................................................................................. 12
ADVANCED CHIPSET SETUP ............................................................................................................................... 14
POWER MANAGEMENT SETUP ............................................................................................................................ 15
PCI/PLUG AND PLAY SETUP .............................................................................................................................. 16
PERIPHERAL SETUP ........................................................................................................................................... 18
AUTO-DETECT HARD DISKS .............................................................................................................................. 19
CHANGE USER PASSWORD & CHANGE SUPERVISOR PASSWORD .......................................................................... 19
AUTO CONFIGURATION WITH OPTIMAL SETTINGS .............................................................................................. 19
AUTO CONFIGURATION WITH FAIL SAFE SETTINGS ............................................................................................. 19
SAVE SETTINGS AND EXIT ................................................................................................................................. 20
EXIT WITHOUT SAVING..................................................................................................................................... 20
INSTALLING AND CONFIGURING JUMPERS & OPTIONAL COMPONENTS...................................... 21
BEFORE YOU BEGIN .......................................................................................................................................... 21
JUMPER BLOCK OVERVIEW ................................................................................................................................ 22
CPU / BUS SPEED / CLOCK RATIO JUMPERS ....................................................................................................... 24
HOW TO CLEAR CMOS CONTENTS: J8 ............................................................................................................. 25
BIOS MODE SELECT JUMPERS: J11 .................................................................................................................. 26
CASE CONNECTOR BLOCK: J36 ........................................................................................................................ 27
MAIN POWER CONNECTORS: J12, J13............................................................................................................... 28
ON-BOARD SCSI BIOS AND DRIVERS (MANUFACTURING OPTION)..................................................................... 28
UPGRADING P54C TO P55C .............................................................................................................................. 35
INSTALLING THE OPTIONAL USB/PS2 ADD-ON CARD .......................................................................................... 37
INSTALLING SIMMS ......................................................................................................................................... 38
REMOVING SIMMS ........................................................................................................................................... 40
ERROR AND INFORMATION MESSAGES .................................................................................................. 41
BEEP CODES ..................................................................................................................................................... 41
ERROR MESSAGES ............................................................................................................................................ 42
BIOS UPDATE .................................................................................................................................................. 45
BIOS UPDATE .................................................................................................................................................. 45
TABLES
1. ............................................................................. Supported SIMM Sizes
................................................................................................................ 34
2. ......................................................... Memory Options for SIMM Sockets
................................................................................................................ 34
FIGURES
1. .........................................................................Motherboard Components
.................................................................................................................. 1
2. ............................................................................ Jumper Block Locations
................................................................................................................ 20
3. .....................................................................Standard Internal SCSI cable
................................................................................................................ 29
4. .................................................................. External SCSI cable (optional)
................................................................................................................ 30
5. ............................................................................................. P55 Upgrade
................................................................................................................ 31
6. .......................................................................... Installing a 72-Pin SIMM
................................................................................................................ 35
1
Product Description
Board Layout
Figure 1. Motherboard Components
1
1
Product Description
Feature Summary
•
Intel Pentium® microprocessor running at 75, 90, 100, 120, 133, 150, 166, and 200
MHz OR Intel Pentium® MMX microprocessor running at 166 and 200 MHz.
•
AT form factor motherboard
•
Intel 82430HX PCIset
•
Support for up to 128 MB single in-line memory modules (SIMMs) DRAM
•
AMI BIOS in a flash memory device that supports system setup and PCI autoconfiguration
•
Expansion slots for up to six add-in boards
 Three dedicated PCI-bus slots
 Two dedicated dedicated ISA-bus slots
 One "shared" slot for either a PCI or an ISA add-in board
•
Two RS-232-compatible serial ports
•
One multimode, Centronics†-compatible parallel port (ECP/EPP)
•
Adaptec AIC-7860 Ultra-SCSI (optional)
•
USB (optional add-on card)
•
PS/2 mouse connector (optional add-on card)
Central Processing Unit
The system is designed to operate with the Intel Pentium microprocessors. The
Pentium processors, in addition to their expanded data and addressing capabilities,
includes the following features:
• Upgradable to next generation OverDrive processor (through your dealer)
•
Onchip numeric coprocessor (compatible with the Intel486 DX processor and
compliant with ANSI/IEEE standard 754-1985)
•
Onchip 16 KB cache (8 KB for data, 8 KB for code) for the P54C and 32 KB cache
for the MMX P55C CPU.
•
Burst-mode bus cycles
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Yukon HX Motherboard User Manual
Memory
The Yukon HX motherboard supports base (conventional) and extended memory.
Operating systems such as MS-DOS†, OS/2†, UNIX†, and all application programs use
base memory. For better performance, OS/2 and UNIX as well as many MS-DOS
applications use extended memory.
The motherboard supports up to 128 MB of DRAM memory. DRAM is implemented
through 72-pin single in-line memory modules (SIMMs). The motherboard contains four
SIMM sockets.
Cache Memory
The Pentium microprocessor includes 16 KB of cache on the chip. The 82430HX
PCIset includes a cache controller that supports direct-mapped cache memory and
supports a second level cache that uses up to 512 KB of Synchronous Pipeline Burst
SRAM.
IDE Peripheral Interface
The motherboard provides a high speed, 32-bit PCI/IDE interface. The PCI/IDE
interface supports:
•
Up to four PCI/IDE devices.
•
Supports PIO Mode 0 to Mode 4.
•
Logical block addressing (LBA) of hard drives larger than 528 MB.
•
Extended Cylinder Head Sector (ECHS) translation modes.
•
ATAPI devices (such as CD-ROMs) on both IDE interfaces.
Super I/O
The Plug and Play Super I/O has the following logical devices: One high performance
2.88MB floppy disk controller with digital data separator. One multi-mode high
performance bi-directional Parallel Port. Two 16C550 compatible enhanced UARTs.
These logical devices can be enabled or disabled individually by BIOS setting. The
Super I/O uses power saving circuitry to control power consumption. Each time a
logical device is disabled, its input gate is inhibited, output is tristated and input clock is
disabled. The net result is high performance and low power consumption.
•
Plug and Play, Version 1.0a compatible to meet Win 95 logo requirement
 Built-in Resource Data ROM
 16-bit address decoding
•
2.88MB floppy disk controller
1
1
Product Description




48mA direct output driver
Enhanced digital data separator
A and B drive may be swapped
supports two 360K, 720K, 1.2M, 1.44M, 2.88M floppy disk drives
•
Multi-mode high performance parallel port
 Standard mode -- bi-directional SPP
 Enhanced mode -- EPP 1.7 and EPP 1.9 compatible
 High Speed mode -- ECP, IEEE 1284 compliant
 Backdrive current protection
 Printer power-on damage protection
•
Two Serial Port
 Supports two 16C550 compatible enhanced serial ports
 Supports IrDA or ASKIR infrared interface (Optional)
System BIOS
The system BIOS, from American Megatrends Incorporated (AMI), provides ISA PnP
and PCI PnP compatibility. The BIOS is contained in a flash memory device. The BIOS
provides the power-on self test (POST), the system Setup program, a PCI and IDE
auto-configuration.
The system BIOS is always shadowed. Shadowing allows any BIOS routines to be
executed from fast 32-bit onboard DRAM instead of from the slower 8-bit flash device.
PCI Auto-configuration
The PCI auto-configuration works in conjunction with the Setup program to support
using PCI add-in boards in the system. When you turn on the system power after
installing a PCI board, the BIOS automatically configures interrupts, DMA channels, I/O
space, and so on. Since PCI add-in boards use the same interrupt resources as ISA
add-in boards, you must specify the interrupts used by non PnP ISA boards in the
Setup program. Chapter 2 tells how to use the Setup program. The PCI autoconfiguration program complies with version 2.1 of the PCI BIOS specification.
IDE Auto-configuration
When an IDE drive is installed in the system, the IDE auto-configuration function
automatically detects and configures the drive for operation in the system. This function
eliminates the need to enter the Setup program after you install an IDE drive.
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Yukon HX Motherboard User Manual
ISA Plug and Play Capability
This provides auto-configuration of Plug and Play ISA cards and resource management
for legacy (non Plug and Play) ISA cards.
BIOS Upgrades
Because the BIOS is stored in a flash memory device, you can easily upgrade the BIOS
without having to disassemble the system. The flash upgrade process can be done by
running a utility from a diskette or hard disk, or over a network.
WARNING
For information about the latest BIOS update for Yukon HX, contact your service
representative.
Universal Serial Bus (USB) Option.
The add-on card features two USB ports and a single PS2 Mouse connector. The USB ports
permit the direct connection of two USB peripherals without an external hub. If more
devices are required, an external hub can be connected to either of the built-in ports The
motherboard fully supports the standard Universal Host Controller Interface (UHCI) and
uses standard software drivers that are UHCI compatible. Features of the USB include:
•
Self-identifying, hot pluggable peripherals.
•
Automatic Mapping of function to driver and configuration.
•
Support for Isochronous and Asynchronous transfer types over the same set of wires.
•
Support for up to 127 physical devices.
•
Guaranteed bandwidth and low latencies appropriate for telephony, audio, and other
applications.
Error handling and fault recovery mechanisms built into protocol.
Expansion Slots
The board has three 16-bit ISA and four PCI expansion slots. One expansion slot is a
"combination" slot and can be used by either a PCI or an ISA board, enabling you to
install a maximum of six add-in boards.
System Security
The BIOS provides a password option that you can enable through the Setup program
(see Chapter 2).
1
1
Product Description
Keyboard/Mouse Controller
The I/O controller stores the keyboard and mouse controller code.
Real-Time Clock and CMOS RAM
Yukon HX motherboard uses Dallas real time clock for CMOS storage.
The time for the clock and the CMOS values can be set by using the system BIOS
Setup program, described in Chapter 2.
Fan Connector
The board contains a connector for a CPU fan.
Speaker
The board has a connector for an offboard speaker.
6
Using the BIOS Setup Program
2
This chapter tells how to use the Setup program that is built into the BIOS. The Setup
program makes it possible to change configuration information (such as the types of
peripherals that are installed) and the boot-up sequence for the system. The Setup
information is stored in CMOS random access memory (RAM) and is backed up by a
battery when power is off.
If the board does not operate as described here, see Chapter 4 for problem
descriptions and error messages.
Record the Setup Configuration
To make sure you have a reference to the Setup values for your system, we
recommend you to write down the current settings and keep this record up-to-date.
AMI BIOS Setup Menu Overview
The AMI BIOS Setup program is easy to use and can be controlled by keyboard. Enter
the AMI BIOS Setup main menu as follows:
1. Turn on or reboot your system.
2. When the message “Hit <DEL>, if you want to run SETUP” appears, press the
<DEL> key to enter the AMI BIOS setup program. The AMI BIOS setup program
(Main Menu) screen as illustrate below will appear.
7
2
Using the Setup Program
AMIBIOS HIFLEX SETUP UTILITY - VERSION x.xx
(C) 1996 American Megatrends, Inc. All Rights Reserved
Standard CMOS Setup
Advanced CMOS Setup
Advanced Chipset Setup
Power Management Setup
PCI / Plug and Play Setup
Peripheral Setup
Auto-Detect Hard Disks
Change User Password
Change Supervisor Password
Auto Configuration with Optimal Settings
Auto Configuration with Fail Safe Settings
Save Settings and Exit
Exit Without Saving
Standard CMOS setup for changing time, date, hard disk type, etc.
Optimal Settings – These settings provide the best performance settings.
Fail-Safe Settings – These settings are more likely to configure a workable computer
when something is wrong. If you cannot boot the computer successfully, select the FailSafe options and try to diagnose the problem after the computer boots. These settings
do not provide optimal performance.
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Yukon HX Motherboard User Manual
Overview of the Setup Keys
The following keys have special functions in the AMI BIOS Setup Utility.
Setup Key
<Tab>
<Esc>
<Enter>
+
<←> <→> <↑> <↓>
<PgUp> <PgDn>
<F2> <F3>
<F10>
Numeric Keys
Description
Move to the next field.
Closes the current operation and return to the
previous level.
Selects the current item or option.
Increments a value.
Decrements a value.
Moves to the next field to the left, right, up and
down.
Modifies the numeric value or makes changes.
Changes screen color.
Saves current CMOS changes at the Main Menu
level and exit.
0 to 9 are used in the Virtual Keyboard and Numeric
Keyboard
The Setup program initially displays the Main menu screen. In each screen there are
options for modifying the system configuration. Use the up <↑> or down <↓> arrow
keys to highlight items in the BIOS setup screen. Use the <Enter> key to select an item
for modification. For certain items, pressing <Enter> brings up a subscreen. After you
have selected an item, use the <+>, <->, <PgUp>, or <PgDn> keys to modify the
setting. To exit, press <ESC> until the Main Menu window appears. Choose “Save
Settings and Exit” to save your changes and reboot the system, or “Exit without Saving”
to ignore your changes and exit the BIOS Setup program.
2
2
Using the Setup Program
Setup Menu Overview
Setup Menu Screen
Standard CMOS Setup
Advanced CMOS Setup
Advanced Chipset Setup
Power Management
Setup
PCI / Plug and Play
Setup
Peripheral Setup
Auto-Detect Hard Disks
Change User Password
Change Supervisor
Password
Auto Configuration with
Optimal Settings
Auto Configuration with
Fail Safe Settings
Save Settings and Exit
Exit Without Saving
Description
For setting up and modifying basic options, such as
time, date, diskette drives, and hard drives.
Configures basic system performance parameters.
Configures features specific to the chipset used in
the computer.
Configures power conservation features.
Configures PCI and Plug-and-Play features.
Configures I/O support.
Auto-detects the type of hard disk drive.
Sets a password that will be used exclusively on the
system for a particular user.
Sets a password that will be used to protect the
system and the setup utility.
These settings provide the best performance
characteristics.
These settings provide far from optimal system
performance, but are the most stable settings.
Saves the BIOS settings and exit the setup menu.
Exits the BIOS setup without saving the changes.
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Yukon HX Motherboard User Manual
Standard CMOS Setup
This section describes the Setup options found on the Standard CMOS Setup menu. If
you select certain options from the main screen (e.g., Primary IDE Master), the Setup
program switches to a subscreen for the selected option.
Date / Time
Select the Date/Time option to change the date or time. The current date and time are
displayed. Enter new values through the displayed window.
Floppy Drive A, B
Choose the Floppy Drive A or B option to specify the floppy drive type. The settings are
360 KB 5.25-inch; 1.2 MB 5.25-inch; 720 KB 3.5-inch; 1.44MB 3.5-inch; and 2.88 MB,
3.5-inch. The default is 1.44MB, 3.5-inch.
Primary IDE Master, Primary IDE Slave, Secondary IDE Master,
Secondary IDE Slave
Choose these options to configure the hard disk drive shown in the field. When you
select an option, the following parameters are listed: Type, LBA/Large Mode, Block
Mode, 32Bit Mode, and PIO Mode. Use the cursor to highlight “Type” and then choose
“Auto” or other options. If you choose “Auto”, the BIOS will automatically detect the type
of HDD before booting the operating system. You can press <enter> again, then the
BIOS will show the complete parameters of HDD type.
AMIBlOS automatically detects the IDE drive parameters (including ATAPI CD-ROM
drives) and displays them. Click on the OK button to accept these parameters Or you
can set the parameters manually if you are absolutely certain that you know the correct
IDE drive parameters.
Click on LBA/Large Mode and choose ‘On’ to enable support for IDE drives with
capacities greater than 528 MB.
Click on Block Mode and choose ‘On’ to support IDE drives that use Block Mode.
Click on 32Bit Mode and click on ‘On’ to support IDE drives that permit 32-bit accesses.
Click on PlO Mode to select the IDE Programmed I/O mode. PIO programming also
works with ATAPI CD-ROM drives. The settings are Auto, 0, 1, 2, 3, 4, or 5. Click on
‘Auto’ to allow AMIBIOS to automatically find the PIO mode that the IDE drive being
configured uses. If you select 0-5 you must make absolutely certain that you are
selecting the PIO mode supported by the IDE drive being configured.
Configuring a CD-ROM Drive Select the appropriate drive icon (Pri Master, Pri Slave,
Sec Master, or Sec Slave). Choose the Type parameter and select CDROM. You can
boot the computer from a CD-ROM drive. You can also choose Auto and let AMIBIOS
automatically set the correct drive parameters.
2
2
Using the Setup Program
Advanced CMOS Setup
This section describes the Setup options available in the Advanced CMOS Setup
menu. If you select certain options from the Advanced CMOS screen, the Setup
program switches to a subscreen for the selected option.
Quick Boot
Set this option to “Enabled” to instruct the AMIBIOS to boot quickly when the computer
is powered on. It does not test system memory above 1MB. The Optimal and the FailSafe default settings are “Disabled”.
BootUp Sequence
Set this option to the sequence of boot drives (floppy drive A:, hard disk drive C:, or a
CD-ROM drive) that the AMIBIOS attempts to boot from after AMIBIOS POST
completes. The settings are “C:, A:, CDROM”, “CDROM, C:, A:” and “A:, C:, CDROM”.
The default setting is “A:, C:, CDROM”.
BootUp NumLock
Set this option to “OFF” to turn the Num Lock key off when the computer is booted so
you can use the arrow keys on both the numeric keypad and the keyboard. The
settings are “On” and “Off”. The default setting is “On”.
Floppy Drive Swap
Set this option to “Enable” to permit drives A: and B: to be swapped. The settings are
“Enabled” and “Disabled”. The default setting is “Disabled”.
PS/2 Mouse Support
When this option is set to “Enabled”, AMIBIOS supports a PS/2-type mouse. The
settings are “Enabled” and “Disabled”. The default setting is “Enabled”.
Primary Display
This option specifies the type of display monitor and adapter in the computer. The
settings are Mono, CGA40, CGA80, VGA/EGA, and Absent. The default settings for
Optimal and Fail-Safe are VGA/EGA.
Password Check
This option enables password checking every time the computer is powered on or
every time BIOS Setup is executed. If “Always” is chosen, a user password prompt
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Yukon HX Motherboard User Manual
appears every time the computer is turned on. If “Setup” is chosen, the password
prompt appears when BIOS Setup is executed. The default settings for Optimal and
Power-On are “Setup”.
Parity Check
Set this option to “Enabled” to check the parity of all system memory. The settings are
“Disabled” or “Enabled”. The default settings for Optimal and Fail-Safe are “Disabled”.
Boot to OS/2, DRAM 64MB or Above
When using OS/2 operating system with installed DRAM of greater than 64 MB, you
need to enable this option; otherwise, set this option to “No”. The default setting is
“No”.
External Cache
This option specifies the caching algorithm used for L2 secondary (external) cache
memory. The available settings are:
Setting
Description
Disabled
L2 secondary cache memory is disabled.
Enabled
L2 secondary cache memory is enabled.
System BIOS Cacheable
The settings are “Disable” and “Enabled”. When this option is set to “Enabled”, the
system performance is enhanced, but there might be some compatibility problems.
When this option is set to “Disabled”, the system performance might be slower, but
greater compatibility is achieved. The Optimal default setting is “Enabled”. The FailSafe default setting is “Disabled”.
Video Shadow
This field allows you to change the video BIOS location from ROM to RAM. Relocating
to RAM enhances system performance, as information access is faster than the ROM.
The Optimal default setting is “Enabled”. The Fail-Safe default setting is “Disabled”.
2
2
Using the Setup Program
Advanced Chipset Setup
When selected, it brings up the Advanced Chipset Setup subscreen.
Memory Hole
Use this option to specify an area in memory that cannot be addressed on the ISA bus.
The settings are “Disabled”, “512-640K”, are “15-16MB”. The default setting is
“Disabled”.
DRAM Timings
Choose DRAM timings from “70ns”, “60ns”, or “Manual”. When choosing “60ns”, the
system performance will be the best if you use the 60ns DRAM. If choosing “70ns”, the
system performance will not be the best but it will be more stable. If choosing “Manual”,
you can modify the options from “DRAM Refresh Rate” to “Turn-Around Insertion” and
will affect the system performance and its stability. The recommendation for user is to
change only the speed of both the “DRAM Refresh Rate” and the “ISA Clock Divisor” so
that the speed is the same as the CPU Bus Clock. If the system becomes unstable, we
recommend the user to choose the “70ns” option.
DRAM Parity Check
Choose “Disabled”, “Parity”, or “ECC”. The default is “Disabled”. If choosing Parity or
ECC, you have to use parity module for DRAM module, and ECC will do the selfcorrection when there is 1 bit failure in the bank.
USB Function Enable (Optional)
Choose “Disabled” or “Enabled”. The default is “Disabled”. Set this function as indicated
in the USB Connector sector.
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Yukon HX Motherboard User Manual
Power Management Setup
Power Management Setup options are described in the following section.
Power Management / APM
Set this option to “Enabled” to enable the power management and APM (Advanced
Power Management) features. The default setting is “Disabled”.
Green PC Monitor Power State
This option specifies the power management state that the Green PC-compliant video
monitor enters after the specified period of display inactivity has expired. The settings
are “Disabled”, “Off”, “Standby”, and “Suspend”. The default setting is “Standby”.
Video Power Down Mode
This option specifies the power management state that the video subsystem enters
after the specified period of display inactivity has expired. The settings are “Disabled”,
“Standby”, and “Suspend”. The default setting is “Standby”.
Hard Disk Power Down Mode
This option specifies the power management state that the hard disk drive enters after
the specified period of display inactivity has expired. The settings are “Disabled”,
“Standby”, and “Suspend”. The default setting is “Suspend”.
Hard Disk Timeout (Min)
This option specifies the length of a period of hard disk inactivity. When this period
expires, the hard disk drive enters the power-conserving mode specified in the “Hard
Disk Power Down Mode” option described above. The settings are “Disabled”, 1 Min,
and all one minute intervals up to and including 14 min. The default setting is
“Disabled”.
Standby Timeout (Min)
Choose the time between 1 and 14 minutes to enter the Standby mode.
Suspend Timeout (Min)
Choose the time between 1 and 14 minutes to enter the suspend mode.
2
2
Using the Setup Program
Slow Clock Ratio
The settings are expressed as a ratio between the normal clock speed and the power
down clock speed. This option specifies the speed at which the system clock runs in
power saving mode. The settings are 1:1, 1:2 (half as fast as normal), 1:4 (the normal
clock speed), 1:8, 1:16, 1:32, 1:64, and 1:128. The default setting is 1:8.
IRQ3 - IRQ15
The settings of this option are “Ignore”, “Monitor”, “Wakeup”, and “Both”. If the option is
set to “Monitor” and there is activity in these events, then this will prevent the system
from sleeping. But if the system is already asleep, then these events will not affect the
system. If the option is set to “Ignore”, then even if there is activity in these events,
these are ignored. If the option is set to “Wakeup”, the system will wakeup if there is
activity in these events. If this option is set to “ Both”, this will have the combined
function of “Monitor” and “Wakeup”.
PCI/Plug and Play Setup
The following section describes the PCI/PnP Setup menu.
Plug and Play Aware OS
Set this option to “Yes” if the operating system installed in the computer is Plug and
Play-aware. AMIBIOS only detects and enables PnP ISA adapter cards that are
required for system boot. The Windows 95 operating system detects and enables all
other PnP-aware adapter cards. Windows 95 is PnP aware. Set this option to “No” if the
operating system (such as DOS, OS/2, Windows 3.x) does not use PnP. You must set
this option correctly or PnP-aware adapter cards installed in your computer will not be
configured properly. The default setting for Optimal setting is “Yes” and the default
setting for Fail-Safe is “No”.
PCI Latency Timer (in PCI Clocks)
This option sets latency of all PCI devices on the PCI bus. The settings are in units
equal to PCI clocks. The settings are 32, 64, 96, 128, 160, 192, 224, and 248. The
default settings for Optimal and Fail-Safe are 64.
PCI VGA Palette Snoop
This option must be set to “Enabled” if any ISA adapter card installed in the computer
requires VGA palette snooping. The settings are “Disabled” and “Enabled”. The default
settings for both Optimal and Fail-Safe are “Disabled”.
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Yukon HX Motherboard User Manual
PCI IDE BusMaster
Set this option to “Enabled” to specify that the IDE controller on the PCI local bus has
bus mastering capability. The settings are “Disabled” and “Enabled”. The default
settings for both Optimal and Fail-Safe are “Disabled”.
Onboard SCSI (Optional)
Choose “Disabled” or “Enabled”. Choose “Enabled” to use onboard SCSI. The default
setting is “Enabled”.
Assign IRQ to PCI VGA Card
Assign IRQ to PCI VGA card. Choose either “Yes” or “No”. The default setting is “Yes”.
PCI Slot1 IRQ Priority, PCI Slot2 IRQ Priority, PCI Slot3 IRQ Priority,
PCI Slot4 IRQ Priority
Choose Auto or one of the following IRQ location: IRQ3-5, 7, 9-12. This option allows
you to choose a IRQ for PCI slots. The default setting is “Auto”.
DMA channel 0 to 7
Choose either “PNP” or “ISA/EISA” setting. If your ISA card is not Plug and Play and
requires DMA, then choose “ISA/EISA” setting on the DMA channel that it uses. The
default setting is “PNP”.
IRQ3 -7, 9-11, 14-15
These options specify the bus that the named interrupt request lines (IRQs) are used.
These options allow you to specify IRQs for use by legacy ISA adapter cards.
They determine if AMIBIOS should remove an IRQ from the pool of available IRQs
passed to BIOS configurable devices. The available IRQ pool is determined by reading
the ESCD NVRAM. If more IRQs must be removed from the pool, the end user can use
these PCI/PnP Setup options to remove the IRQ by assigning the option to the
ISA/EISA setting. Onboard I/O is configurable by AMIBIOS. The IRQs used by onboard
I/O are configured as PCI/PnP. The settings are “PCI/PNP” and “ “ISA/EISA”. The
default setting for both Optimal and Fail-Safe is “PCI/PnP”.
2
2
Using the Setup Program
Peripheral Setup
Peripheral Setup options are displayed by choosing the Peripheral Setup from the
Setup main menu.
OnBoard FDC
This option enables the floppy drive controller on the motherboard. The settings are
“Auto”, “Enabled”, and “Disabled”. The default settings for both Optimal and Fail-Safe
are “Auto”.
OnBoard Serial Port1
This option enables serial port 1 on the motherboard and specifies the base I/O port
address for serial port 1. The settings are “3F8h”, “3E8h”, “2F8h”, “2E8h”, “Auto”, and
“Disabled”. The Optimal and Fail-Safe default settings are both “Auto”.
OnBoard Serial Port2
This option enables serial port 2 on the motherboard and specifies the base I/O port
address for serial port 2. The settings are “2F8h”, “2E8h”, “3F8h”, “3E8h”, “Auto”, and
“Disabled”. The Optimal and Fail-Safe default settings are both “Auto”.
Serial Port2 Mode
You can choose either “Normal” or other IR modes. The default setting is “Normal”. The
IR mode should be set according to your IR device.
OnBoard Parallel Port
This option enables the parallel port on the motherboard and specifies the parallel port
base I/O port address. The settings are “378h”, “278h”, “3BCh”, “Auto”, and “Disabled”.
The default setting for Optimal and Fail-Safe is “Auto”.
Parallel Port IRQ
If the onboard Parallel port is set on either 3BC or 378, you need to choose IRQ7. If the
Parallel Port is set on the 278, you need to choose IRQ5.
Parallel Port Mode
This option specifies the parallel port mode. ECP (Extended Capabilities Port) and EPP
(Enhanced Parallel Port) are both bi-directional data transfer schemes that adhere to
the IEEE P1284 specifications. The settings are “SPP”, “EPP”, and “ECP”. The default
setting is “SPP”.
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Yukon HX Motherboard User Manual
Parallel Port ECP DMA
This option is only available if the setting for the Parallel Port Mode option is ECP. The
settings are “DMA CH 1” and “DMA CH 3”. The default setting is “DMA CH 3”.
OnBoard IDE
This option specifies the onboard IDE controller channels that will be used. The settings
are “Primary”, “Secondary”, “Both”, and “Disabled”. The default setting is “Both”.
Auto-Detect Hard Disks
This “Auto-Detect Hard Disks” option detects the parameters of IDE hard disk drives,
and automatically enters them into the standard CMOS setup screen.
Change User Password & Change Supervisor Password
AMIBIOS has two optional password features. “Supervisor Password” sets a password
that will be used to protect the system and the setup utility; “User Password” sets a
password that will be used exclusively on the system. The system can be configured so
that all users must enter a password every time the system boots or when the BIOS
Setup is executed. The password is stored in CMOS RAM. When you select Supervisor
or User, AMIBIOS prompts for a password. You must set the Supervisor password
before you can set the User password. Enter a 1-6 character password. The password
does not appear on the screen when typed. Make sure you write it down. If you forget
it, you must drain CMOS RAM and reconfigure the system.
Auto Configuration with Optimal Settings
You can load the Optimal default settings. The Optimal default settings are best-case values
that should optimize system performance. If CMOS RAM is corrupted, the Optimal settings are
loaded automatically.
Auto Configuration with Fail Safe Settings
You can load the Fail-Safe Setting by pressing <enter> at the Fail-Safe Setting. The
Fail-Safe settings provide far from optimal system performance, but are the most stable
settings. Use this option as a diagnostic aid if the system is behaving erratically.
2
2
Using the Setup Program
Save Settings and Exit
Saves the changes to CMOS RAM and exits the Setup program. You can also press
the <F10> key anywhere in the BIOS Setup program (main menu) to do this.
Exit Without Saving
Exits the Setup program without saving any changes. This means that any changes
made while in the Setup program are discarded and NOT SAVED. Pressing the <ESC>
key in BIOS Setup program (main menu) will do this.
20
Installing and Configuring Jumpers &
Optional Components
3
This chapter describes the following:
•
Jumper block locations and functions.
•
Procedures to remove and install optional components.
•
Information about replacing the battery.
Before You Begin
•
Be sure to do each procedure in the correct order.
•
Set up an equipment log to record the system model and serial numbers, all
installed options, and other information about the system. If you need this
information, it will be easier to consult the log than to open up and examine the
system.
•
You will need a medium flat-bladed screwdriver and a jumper removal tool, such as
a pair of fine needle-nosed pliers. We recommend that you use an antistatic wrist
strap and a conductive foam pad when working on the board.
WARNING
The procedures in this chapter assume familiarity with the general
terminology associated with personal computers and with the safety
practices and regulatory compliance required for using and modifying
electronic equipment.
Disconnect the system from its power source and from any
telecommunications links, networks or modems before doing any of the
procedures described in this chapter. Failure to disconnect power,
telecommunications links, networks or modems before you open the system
or do any procedures can result in personal injury or equipment damage.
Some circuitry on the system board may continue to operate even though
the front panel power button is off.
CAUTION
Electrostatic discharge (ESD) can damage components. Do the procedures
described in this chapter only at an ESD workstation. If such a station is not
available, you can provide some ESD protection by wearing an antistatic wrist
strap and attaching it to a metal part of the system chassis.
21
3
Installing and Configuring Motherboard Options
Add-in boards can be extremely sensitive to ESD and always require careful
handling. After removing the board from its protective wrapper or from the system,
place the board flat on a grounded, static-free surface, component-side up. Use a
conductive foam pad if available, but not the board wrapper. Do not slide the
board over any surface.
Jumper Block Overview
The motherboard contains configuration jumpers that make it possible to change the
system configuration. For instance, you can prevent access to the system Setup
program by moving a jumper. If you forget your system password, you can clear the
password by moving a jumper. The system has been properly configured at the factory.
Normally, the only time you will ever change a jumper is if you need to:
•
Change the system operating speed.
•
Clear the User or Administrator password.
•
Reset the CMOS RAM settings to the default values.
Figure 2 shows the location of the jumper blocks on the system board. Descriptions of
how to change the jumpers follow Figure 2.
CAUTION
Do not squeeze the pliers or other tool you use to remove a jumper, or you might
bend or break the pins.
/ NOTE
A jumper is a small plastic-encased conductor that slips over jumper pins, as
shown in Figure 2. To change a jumper setting, use a pair of fine needle-nosed
pliers to remove the jumper from its current location and slide it onto the new pins
to obtain the desired setting.
22
Yukon HX Motherboard User Manual
Figure 2. Jumper Block Locations
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3
Installing and Configuring Motherboard Options
CPU / Bus Speed / Clock Ratio Jumpers
These jumpers set the CPU, PCI, and ISA bus frequencies and the clock ratio. The
jumpers should be changed only when you upgrade the CPU.
CPU / BUS Spees / Clock Ratio Jumpers
CPU SPEED
J2
PENTIUM 75 MHz
1
PENTIUM 90 MHz
PENTIUM 100 MHz
PENTIUM 120 MHz
PENTIUM 133 MHz
PENTIUM 150 MHz
1
1
1
1
1
2
2
2
2
2
2
3
3
3
3
3
3
J3
J4
J5
ON
ON
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
24
ON
ON
ON
ON
ON
JB1
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
Yukon HX Motherboard User Manual
CPU SPEED
J2
PENTIUM 166 MHz
1
PENTIUM 200 MHz
PENTIUM 233 MHz
1
1
2
2
2
3
3
3
J3
J4
J5
OFF
ON
ON
OFF
OFF
ON
ON
ON
ON
JB1
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
How to Clear CMOS Contents: J8
This procedure should be done after the system BIOS is updated.
1. Power off the computer and remove the system cover.
2. You can clear the system CMOS by shorting pins 1-2 for a brief moment. To do so,
place the jumper cap on the J8 pins 1-2.
3. Power on and allow the system to boot.
4. Power off.
3
3
Installing and Configuring Motherboard Options
5. Take the jumper cap out from the J8 pins 1-2.
6. Replace the system cover and turn the power back on.
BIOS Mode Select Jumpers: J11
This section tells how to select BIOS mode by using jumper J11.
Mode
J11
(allows updates of PnP configuration into NVRAM)
Non-Plug & Play
2, 3
Plug & Play *
1, 2
* Default BIOS mode setting
26
Yukon HX Motherboard User Manual
Case Connector Block: J36
Speaker:
Speaker connector
This connector is used to connect to speaker.
IrDA:
IrDA wireless communication connector
HD LED:
IDE Hard disk LED
Keylock:
Keylock connector
The Keylock can lock or unlock the keyboard input..
PWR LED:
Power LED
The power LED will light on when the system is powered-on.
RST SW:
The RESET switch provides users with a hardware reset function,
which is almost the same as power-on/off. The system will perform a
cold start after the RESET switch is pushed and released by user.
CPU Fan:
+12V CPU fan connector
EXTSMI SW
This allows the user to manually place the system into a suspend
mode or “Green” mode where system activity will be instantly
decreased to save electricity and expand the life of certain
components when the system is not in use. This 2-pin connector
connects to the case-mounted suspend switch. EXTSMI is activated
when it detects a short to open moment and therefore leaving it
shorted will not cause any problem. Wake-up can be controlled by
settings in the BIOS but the keyboard will always allow wake-up. If
you want to use this connector, enable Power Management/APM in
the “Power Management Setup” of the BIOS software.
3
3
Installing and Configuring Motherboard Options
Main Power Connectors: J12, J13
The power supply connector is a twelve-pin male connector. Dual connectors from the
power supply can fit in only one direction.
On-Board SCSI BIOS and Drivers (Manufacturing Option)
Yukon HX motherboard comes with the optional on-board SCSI by using Adaptec AIC7860 PCI-to-UltraSCSI Controller Chip. All SCSI sequences are managed by the
PhaseEngine, a high performance on-chip 10 MIPS RISC processor. 8-bit UltraSCSI
technology, capable of transfer speeds of up to 20 MB/sec, maximizes I/O throughput
in high-performance PCs and workstations for optimal utilization of the 133 MB/sec PCI
local bus. The onboard SCSI is tested extensively over a large matrix of operating
systems, peripherals and systems to ensure a high degree of compatability and
reliability.
The PCI host interface on the SCSI supports the 32-bit PCI interface with the bus
master burst data transfer up to the maximum rate of 133 MB/sec. Data is parity
protected throughout its journey through the chip. The large 128-byte FIFO maximizes
DMA transfers and reduces system latencies.
SCSI Jumper Setting: J30
J30
SCSI
ON
ENABLE
OFF
DISABLE
SCSI LED: JP8
LED display for on-board SCSI. The light is on when the on-board SCSI is turned on.
1
4
Connect the SCSI LED cable to pin 1 and pin 2 of the SCSI LED connector (JP8) if the
computer has a two position SCSI LED cable.
28
Yukon HX Motherboard User Manual
SCSI Driver Installation
Win 95 Driver Installation
There are two scenarios regarding Yukon HX SCSI driver installation for Windows 95:
(a) installing under Windows 95 new version; and (b) installing under Windows 95 old
version. If the computer does not automatically install the SCSI driver for you, your
Windows 95 is an older version. Please refer to scenario (b) for SCSI driver installation.
Windows 95 New Version:
1.
Power up the computer and start Windows 95.
2.
Windows 95 will automatically detect any new hardware. A “New Hardware
Found” screen appears once it detects the Adaptec AIC-7860 PCI-to-UltraSCSI
Controller Chip. Your system will locate and install the built-in Adaptec 7860 SCSI
driver automatically.
3.
To finish setting up your new hardware, you must restart your computer.
If your computer does not automatically install the SCSI driver for you, your Windows
95 is most likely an older version. You need to install the SCSI driver by referring to the
following section.
Windows 95 Old Version:
1.
Boot up the computer and install Windows 95.
2.
Go to Control Panel \ System \ Device Manager \ Other Devices
3
3
Installing and Configuring Motherboard Options
3.
Click on the “Properties” button. Select “Driver” sheet and then click on “Change
Driver”
4.
A “Select Hardware Type” screen pops up. Highlight “SCSI controller” and then
click “OK”.
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Yukon HX Motherboard User Manual
5.
Click on “Have Disk” button to install Adaptec 7860 SCSI driver. If you have the
Power CD ver. 2.0, the path for the Adaptec 7860 SCSI driver is
D:\mthrbrds\yukonhx\scsi7800\win95\aic78xx.inf
(where D: is your CD-ROM drive)
Once the file “aic78xx.inf” is highlighted, click “OK”. Click “OK” again to accept the
driver.
3
3
Installing and Configuring Motherboard Options
6.
A “Select Device” screen pops up. Click on “OK” and a “PCI SCSI Bus Controller
Properties” screen appears. Click “OK” again to acknowledge.
7.
Finally, a “System Settings Change” screen appears. Choose “Yes” to restart the
computer and the driver installation will take effect after restart.
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Yukon HX Motherboard User Manual
Windows NT 4.0:
1.
Power up the computer and start Windows NT 4.0.
2.
Windows NT 4.0 will automatically detect any new hardware. Once the system
detect the Adaptec AIC-7860 PCI-to-UltraSCSI Controller Chip, it will locate and
install the built-in driver automatically.
SCSI Cabling (Optional with SCSI version motherboard)
The Yukon HX SCSI version motherboard comes with a Standard Internal SCSI cable.
There is also an optional External SCSI cable available for users.
Figure 3. Standard Internal SCSI cable
Color Strip
The Internal SCSI cable is a fifty-pin flat ribbon cable with three internal device
connectors.
To connect the SCSI cable, plug the end of the cable into the J28 SCSI connector on
the motherboard (host connector). The colored stripe on one side of the ribbon cable
must match with the number “1” printed on the host connector. Be sure to maintain pin1 orientation throughout the bus, or your SCSI devices will not work properly.
The following diagram shows how the internal SCSI cable should be connected.
3
3
Installing and Configuring Motherboard Options
Figure 4. External SCSI cable (optional)
Color Strip
The External SCSI cable is a fifty-pin flat ribbon cable with two internal connectors and
one external SCSI-2 port.
External devices should be connected to the external port with a SCSI-2 cable. If there
are more than one internal or external devices, they should be daisy-chained to the
external port connector. On the whole, the end device (the last one away from the host
connector on the motherboard) must be terminated, or the devices in the chain will not
work properly.
The following diagram shows how the external SCSI cable should be connected for
internal and/or external SCSI devices.
If there is NO external SCSI device attached, such as Device 1 and Device 2, then a
active terminator is required to be in place at the external port connector.
SCSI ID Number
All SCSI device, including this board have a SCSI identification number that is not in
used by any other SCSI device. There are eight possible ID numbers, 0 through 7. The
Yukon HX has a fixed SCSI ID of 7.
You can connect up to seven SCSI devices to the board. You must set a SCSI ID
number for each device. Different SCSI devices vary in the way they set the ID number.
Some use jumpers, others have some kind of selector switch. Refer to the manual of
each particular SCSI device that you installed on the board for instruction on how to set
its ID number.
34
Yukon HX Motherboard User Manual
Upgrading P54C to P55C
To upgrade Yukon HX motherboard from P54C to P55C, two procedures need to be
completed: (1) Install a 3.3V voltage regulator on the board; (2) Change the jumper
settings of JP9 and J31.
All Yukon HX comes with a 3.3V voltage slot (white color) located above of the CPU. To
upgrade, you need to purchase a 3.3V voltage regulator from any electronic store.
Once you purchase the 3-pin 3.3V voltage regulator, cut the pin so that the remaining
length of the pin is approximately 0.25 inch.
Approval 3.3 Voltage Regulator List:
Vendor
Part Code
Linear Tech.
LT1083
7.5 AMP
LT1084
5 AMP
LT1085
3 AMP
Low Dropout Positive Adjustable Regulators
AS2830
3 AMP
AS2840
4 AMP
AS2850
5 AMP
AS2880
8 AMP
Adjustable Low Dropout Voltage Regulator
Alpha
Figure 5. P55C Upgrade
Insert the connector into the 3.3V slot and secure it as indicated in the diagram below.
3
3
Installing and Configuring Motherboard Options
CPU Voltage Selector: J31 & JP9
Once the 3.3V voltage connector be installed on the board, JP9 and J31 needed to be
opened (leave the jumper caps off) for P55 upgrade.
CPU VOLTAGE
3.3 - 3.6V: P54C
JP9
1 3 5 7 9 11
2 4 6 8 10 12
2.8 - 2.9V: P55
J31
ON
All ON
1 3 5 7 9 11
2 4 6 8 10 12
36
OFF
All OFF
Yukon HX Motherboard User Manual
DRAM Voltage Jumper Setting: JB2, JB3
This jumper block changes the DRAM voltage of the Yukon HX motherboard. DO NOT
change this jumper unless you are changing to a new type of DRAM which requires
3.3V to function.
DRAM VOLTAGE
5V DRAM
JB2
3.3V DRAM
JB3
JB2
JB3
1
3
5
1
3
5
1
3
5
1
3
5
2
4
6
2
4
6
2
4
6
2
4
6
3.3V PCI Power Connector: J14
This connector provides 3.3V power to the PCI slots.
Installing the Optional USB/PS2 add-on card
The female connector at the bottom end of this card plugs onto JP6 on the Yukon-HX
motherboard, located between the COM1 and COM2 headers. The USB connectors and PS2
connector must face toward the outside of the computer case.
/
NOTE:
Your System BIOS may need to be Upgraded to support your new USB/PS2 add-on card
features. This can be obtained from your dealer and upgraded as described at the end of this
manual in section A, BIOS update. If your system was purchased with the add-on card already
installed then no further BIOS update is necessary.
3
3
Installing and Configuring Motherboard Options
Installing SIMMs
The system board contains four 72-pin, tin lead SIMM sockets. You can configure the
system memory from 8 MB to 128 MB. The sockets are arranged as banks 0 and 1.
Two sockets make up one bank.
When adding memory, follow these guidelines:
•
When you install SIMMs, you must completely fill at least one bank; that is, two
sockets make up one bank.
•
The computer automatically detects the installed memory, so it doesn’t matter which
bank is used, as long as both sockets in the bank are filled.
•
All SIMMs in one bank must be the same size. For example, don’t install a 4 MB
SIMM in one socket of bank 0 and an 8 MB SIMM in the second socket of bank 0.
You may, however, use different size SIMMs between banks.
•
When adding SIMMs, use only tin lead, 72-pin, 70 ns fast page SIMMs or, for
optimum performance, 60 ns EDO DRAM. Either ECC parity or non-parity SIMMs
are supported.
The types of SIMMs that can be installed are listed in Table 1. Table 2 lists the possible
combinations of SIMM types and the resulting amount of system memory.
Table 1. Supported SIMM Sizes
Total Memory Size
of SIMM
SIMM configuration
(without parity)
SIMM configuration
(with parity)
4 Mbytes
1M x 32
1M x 36
8 Mbytes
2M x 32
2M x 36
16 Mbytes
4M x 32
4M x 36
32 Mbytes
8M x 32
8M x 36
/ NOTES
The board supports parity (x 36) or non-parity (x32) SIMMs. Error checking and
correction (ECC) is supported with parity SIMMs. There is no ECC with non-parity
SIMMs.
All SIMM socket sites must contain the same size SIMMs.
38
Yukon HX Motherboard User Manual
Table 2. Memory Options for SIMM Sockets
Install a SIMM of the
following size in both
sockets of Bank 1
Install a SIMM of the
following size in both
sockets of Bank 0
8 MB
4 MB (8 MB total in
bank 1)
Empty
16 MB
4 MB (8 MB total in
bank 1)
4 MB (8 MB total in
bank 0)
16 MB
8 MB (16 MB total in
bank 1)
Empty
32 MB
8 MB (16 MB total in
bank 1)
8 MB (16 MB total in
bank 0)
32 MB
16 MB (32 MB total in
bank 1)
Empty
64 MB
16 MB (32 MB total in
bank 1)
16 MB (32 MB total in
bank 0)
64 MB
32 MB (64 MB total in
bank 1)
Empty
128 MB
32 MB (64 MB total in
bank 1)
32 MB (64 MB total in
bank 0)
For a total
memory of
system
To install SIMMs, do the following procedure:
1. Holding the SIMM only by the edges, remove it from its antistatic package.
2. Position the SIMM at about a 45° angle relative to the system board. Make sure the
small notch in the middle of the bottom edge of the SIMM aligns with the notch in
the SIMM socket.
3. Insert the bottom edge of the SIMM into the SIMM socket and make sure it is seated
firmly.
4. When the SIMM seats correctly, hold it at each end and gently push the top edge
towards the retaining clips of the connector until the SIMM snaps into place (Figure
6). If the SIMM does not install correctly, gently spread the retaining clips just
enough so that you can pull away the top edge of the SIMM and try again.
3
3
Installing and Configuring Motherboard Options
Figure 6. Installing a 72-Pin SIMM
Removing SIMMs
To remove a SIMM, do the following:
1. Observe the precautions in "Before You Begin."
2. Turn off all peripheral devices connected to the system.
3. Turn off the system.
4. To gain access to the SIMM sockets, remove the system cover.
5. Gently spread the retaining clip at each end of the SIMM, just enough to allow you
to rotate the top edge of the SIMM downward to an angle of about 45°.
6. Holding the SIMM only by the edges, lift it away from the socket, and store it in an
antistatic package.
7. Reinstall and reconnect any parts you removed or disconnected to gain access to
the SIMM sockets.
40
Error and Information Messages
4
Beep Codes
Fatal errors, which halt the boot process, are communicated through a series of audible
beeps. IF AMIBIOS POST can initialize the system video display, it displays the error
messages. Displayed error messages, in most cases, allow the system to continue to
boot.
Beeps
1
2
3
4
5
6
7
8
9
10
11
Error Message
Refresh Failure
Description
The memory refresh circuitry on the
motherboard is faulty.
Parity Error
Parity error in the base memory (the first 64
KB block) of memory.
Base 64 KB Memory Memory failure in the first 64 KB.
Failure
Timer Not Operational A memory failure in the first 64 KB of memory,
or Timer 1 on the motherboard is not
functioning.
Processor Error
The CPU generated an error.
8042 - Gate A20 The BIOS cannot switch to protected mode.
Failure
Processor Exception The CPU on the CPU card generated an
Interrupt Error
exception interrupt.
Display
Memory The system video adapter is either missing or
Read/Write Error
its memory is faulty. This is not a fatal error.
ROM Checksum Error The ROM checksum value does not match the
value encoded in the BIOS.
CMOS
Shutdown The shutdown register for CMOS RAM has
Register Read/Write failed.
Error
Cache Memory Bad- The cache memory test failed.
Cache
Do Not Enable Cache memory is disabled. Do not press <Ctrl>
<Alt> <Shift> <+> to enable cache memory.
41
4
Error and Information Messages
Error Messages
An error can occur after the system display has been initialized.
Error Message
8042 Gate-A20 Error
Explanation
Gate A20 on the keyboard controller (8042) is not
working. Replace the 8042.
Address Line Short!
Error in the address decoding circuitry on the
motherboard.
C: Drive Error
No response from drive C:. Run the AMIDiag Hard
Disk Utility. Check the C: hard drive type in Standard
Setup.
C: Drive Failure
No response from hard drive C:. Replace the drive.
Cache Memory Failure, Cache memory is defective. Run AMIDiag.
Do Not Enable Cache!
CH-2 Timer Error
An AT system has two timers. There is an error in
timer 2.
CMOS Battery State Low CMOS RAM is powered by a battery. The battery
power is low. Replace the battery.
CMOS Checksum Failure CMOS RAM checksum is different than the previous
value. Run BIOS Setup.
CMOS System Options The values stored in CMOS RAM have been
Not Set
destroyed. Run BIOS Setup.
CMOS
Display
Type The video type in CMOS RAM does not match the
Mismatch
type detected. Run BIOS Setup.
CMOS
Memory
Size The amount of memory found by AMIBIOS is
Mismatch
different than the amount in CMOS RAM. Run BIOS
Setup.
CMOS Time and Date Not Run Standard Setup to set the date and time.
Set
D: Drive Error
No response from drive D:. Run the AMIDiag Hard
Disk Utility. Check the hard disk type in Standard
Setup.
D: drive failure
No response from hard disk drive D:. Replace the
drive.
Diskette Boot Failure
The boot disk in floppy drive A: is corrupt. It cannot
be used to boot the system. Use another boot disk
and follow the screen instructions.
continued *
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Yukon HX Motherboard User Manual
(Continued)
Error Message
Explanation
Display Switch Not Proper Some systems require a video switch be set to
either color or monochrome. Turn the system off, set
the switch properly, then power on.
DMA Error
Error in the DMA Controller.
DMA 1 Error
Error in the first DMA channel.
DMA 2 Error
Error in the second DMA channel.
FDD Controller Failure
AMIBIOS cannot communicate with the floppy disk
drive controller. Check all appropriate connections
after the system is powered down.
HDD Controller Failure
AMIBIOS cannot communicate with the hard disk
drive controller. Check all appropriate connections
after the system is powered down.
INTR1 Error
Interrupt channel 1 failed POST.
INTR2 Error
Interrupt channel 2 failed POST>
Invalid Boot Diskette
The BIOS can read the disk in floppy drive A:, but
cannot boot the system with it. Use another boot
disk and follow the screen instructions.
Keyboard is
Locked...Unlock It
The keyboard lock on the system is engaged. The
system must be unlocked to continue to boot.
Keyboard Error
The keyboard has a timing problem. Make sure a
Keyboard Controller. AMIBIOS is installed. Set
Keyboard is Advanced Setup to Not Installed to skip
the keyboard POST routines.
Keyboard / Interface Error There is an error in the keyboard connector.
No ROM BASIC
Cannot find a proper bootable sector on either drive
A: or C:. AMIBIOS cannot find ROM Basic.
Off Board parity Error
Parity error in memory installed on an adapter card
in an expansion slot. The format is:
OFF BOARD PARITY ERROR ADDR = (XXXX)
XXXX is the hex address where the error occurred.
Run AMIDiag to find and correct memory problems.
continued *
4
4
Error and Information Messages
(Continued)
Error Message
On Board Parity Error
Parity Error ????`
Explanation
Parity error in motherboard memory. The format is:
ON BOARD PARITY ERROR ADDR = (XXXX)
XXXX is the hex address where the error occurred.
Run AMIDiag to find and correct memory problems.
Parity error in system memory at an unknown
address. Run AMIDiag to find and correct memory
problems.
44
A
BIOS Update
BIOS Update
The system BIOS resides on a flash component. You can upgrade a flash BIOS
through software, without taking the system apart or replacing the flash component.
This appendix tells how to upgrade your system BIOS from a diskette in particular for
your Yukon HX motherboard. Your service representative can provide you with the
latest BIOS upgrade for your system.
WARNING
Upgrading BIOS other than the one provided by the Yukon HX manufacturer will
automatically have the product warranty voided. Using the incorrect BIOS for
upgrade might cause permanent uncoverable damage to the motherboard.
Reflash BIOS
1. Insert the BIOS diskette into your floppy drive. At A:\, type
amiflash <BIOS filename> and hit <enter>
2. A Flash EPROM Programming Utility screen pops up. Make sure the version of the
AMIFLASH BIOS is 5.23 or above. Press “Y” to continue.
WARNING
System must NOT be turned off during the Programming operation. System
will Re-Boot if Programming is successfully complete.
3. Please wait for the programming operation to complete. Once completed, take the
BIOS diskette out from the floppy drive and press any key to restart the computer.
4. Once reboot, go into the CMOS Setup main menu (refer to Chapter 2). Select “Auto
Configuration with Optional Settings” and then “Load high performance setting”. You
can change your CMOS setting again.
5. Save and exit BIOS Setup Program.
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