LX30WB VL-Bus
System Board Manual
Document Number: 06-00220-03, Rev. 2A
221 Warren Ave., Fremont, CA 94539-7085
July 1995
Copyright Notices
Micronics Computers, Inc.
The information contained in the LX30WB system board manual has been
carefully checked and is believed to be accurate. Micronics assumes no
responsibility for any inaccuracies that may be contained in this document.
Micronics makes no commitments to update or to keep the information in this
manual at a current level when changes are made to the product.
Micronics reserves the right to make improvements to this document and/or
product at any time and without notice.
All Rights Reserved. No part of this document may be photocopied, reproduced, translated, or reduced to any medium or machine form without prior,
written consent from Micronics.
COPYRIGHT (C) 1994, 1995 Micronics Computers, Inc.
P ortions of the Manual
Portions of this manual were copied (with permission) from Phoenix Technologies, Ltd. Copyright 1994. All rights reserved.
Trademarks
IBM is a registered trademark of International Business Machines.
Microsoft, Microsoft Word, Windows are registered trademarks of Microsoft
Corporation. Intel and PCI are registered trademarks of Intel Corporation.
UNIX is a registered trademark of AT&T Corporation. Lotus 1-2-3 is a
registered trademark of Lotus Development Corporation. All other product
names mentioned herein are used for identification purposes only and may be
the trademarks of their respective companies.
ii
Micronics Quick Installation
We know many experienced people prefer to read as little of the documentation as possible. If this sounds like you, here’s the short form:
1. Ground yourself to prevent damaging static discharge, then remove the
LX30WB from its packaging.
2. Configure and verify the system board’s jumper settings. (See Jumper
Settings in Chapter 2)
3. Install the CPU and the system memory. (Chapter 3)
4. Install the motherboard into the system case and make all of the neces-
sary
case connections.
5. Install any peripherals (Chapter 3). Do not replace the computer
cover until you have verified the system is working properly.
6. Turn the computer on and press the <Ctrl>, <Alt>, and <Esc> keys
simultaneously after you see the screen below:
iii
7. Set the time and date. Adjust the BIOS settings to match what is
installed in your system. If installing an IDE drive, select the IDE
device you wish
to configure. Press <Enter> with AUTO CONFIG selected and the
BIOS will automatically configure the drive for you. (See Chapter 4)
8. After you have configured the BIOS settings, press the <Esc> key
followed by the <F4> key to save the changes and exit. The system will
reboot and be ready for use.
iv
Contents
Introduction........................................................................ 1-1
Features..................................................................................... 1-2
Software Compatibility ............................................................. 1-2
Configuring the LX30WB .................................................. 2-1
Static Electricity........................................................................ 2-1
Office Environment................................................................... 2-1
LX30WB Components ............................................................. 2-2
Jumper Settings......................................................................... 2-3
Installing the LX30WB, System Memory, CPUs and
Peripherals......................................................................... 3-1
Installation of the LX30WB...................................................... 3-2
Tools Required ....................................................................................... 3-2
Equipment Required .............................................................................. 3-2
System Memory ........................................................................ 3-3
SIMMs Supported .................................................................................. 3-3
Memory Configurations ......................................................................... 3-4
Installing the SIMMs ............................................................................. 3-5
Removing SIMMs .................................................................................. 3-5
Installing a CPU ........................................................................ 3-5
Installing Cache Memory .......................................................... 3-6
Installing a VL-Bus Peripheral Card ......................................... 3-7
The BIOS Setup Utility....................................................... 4-1
Configuration ............................................................................ 4-1
Initial Boot Up .......................................................................... 4-1
Setup ......................................................................................... 4-2
Running the Setup Procedure ................................................... 4-2
Setting the CMOS Parameters.................................................. 4-3
Setting the CMOS Main Screen................................................ 4-4
System Time and Date ........................................................................... 4-4
v
Diskette Drive A or B ............................................................................ 4-4
Hard-Disk Drive 1-4 (IDE Drives Only) ............................................... 4-4
Base Memory and Extended Memory.................................................... 4-4
Video Card ............................................................................................. 4-4
System Speed.......................................................................................... 4-4
Cache ...................................................................................................... 4-4
External Cache Mode............................................................................. 4-5
CPU T ype ............................................................................................... 4-5
Setting the CMOS Extended Screen......................................... 4-5
System BIOS .......................................................................................... 4-6
Video BIOS ............................................................................................ 4-6
On Board Floppy .................................................................................... 4-6
Primary IDE ........................................................................................... 4-6
Master Speed .......................................................................................... 4-6
Slave Speed ............................................................................................ 4-6
Secondary IDE ....................................................................................... 4-6
Serial Port 1............................................................................................ 4-6
Serial Port 2............................................................................................ 4-6
Parallel Port ............................................................................................ 4-7
Parallel Port Mode ................................................................................. 4-7
Energy Saving Timer ............................................................................. 4-7
Non-Cacheable Area .............................................................................. 4-7
Keyboard ................................................................................................ 4-7
System Password .................................................................................... 4-7
Setup Password ...................................................................................... 4-8
Re-Configuring Your Computer ............................................... 4-8
POST Messages................................................................ A-1
Beep Codes....................................................................... B-1
Hard Disk Drive T ypes ...................................................... C-1
Specifications ................................................................... D-1
Environmental Specifications....................................................D-2
Temperature Range................................................................................ D-2
Relative Humidity ..................................................................................D-2
Battery Disposal........................................................................D-3
vi
Installing a P ower Module.................................................E-1
FCC W arning Statement ........................................................... F-1
Glossary ....................................................................................G-1
Limited W arranty ..................................................................... W-1
Non-W arranty Service..............................................................W-2
List of Figures
Figure 2-1: LX30WB System Board............................................................ 2-2
Figure 3-1: Installing a 72-Pin SIMM......................................................... 3-5
Figure 3-2: Upgrading the External Cache ................................................. 3-6
Figure 3-3: Installing and VL-Bus Card ..................................................... 3-7
Figure 4-1: Power-Up Screen....................................................................... 4-2
Figure 4-2: CMOS Main Screen.................................................................. 4-3
Figure 4-3: CMOS Extended Screen ........................................................... 4-5
Figure 4-4: Exit Screen ................................................................................ 4-9
List of Tables
Table 2-1: CPU Voltage Requirements ........................................................ 2-3
Table 2-2: CPU Selection ............................................................................. 2-4
Table 2-3: CPU Selection ............................................................................. 2-4
Table 2-4: External Cache Size Selection.................................................... 2-5
Table 2-5: VL IDE Selection........................................................................ 2-5
Table 2-6: VL IDE IRQ14 Selection............................................................ 2-5
Table 2-7: ISA IDE Selection ...................................................................... 2-5
Table 2-8: Secondary IDE Controller Selection .......................................... 2-6
Table 2-9: Video Selection ........................................................................... 2-6
Table 2-10: Bus Speed Selection.................................................................. 2-6
Table 2-11: Peripheral and Case Connections............................................. 2-7
Table 3-1: Memory Configurations.............................................................. 3-4
vii
viii
Introduction
1
The LX30WB is an integrated system board featuring VESA Local Bus
architecture and Mode 3 IDE controller (optional). The Micronics
LX30WB system board represents Micronics' third generation of VESA
Local Bus system boards and makes an excellent foundation for an
advanced personal computer or workstation.
Micronics is a forerunner in VESA Local Bus technology. The VESA
Local Bus Architecture provides high performance for Graphical User
Interfaces (GUIs) and peripherals which perform high speed data
transfers, such as disks and multimedia.
The LX30WB is also a "Green Board" which means it adheres to the
Environmental Protection Agency's strict Energy Star efficiency
guidelines. See Chapter 4 for information and instructions on how to
set up the "Green Section" of the BIOS.
Introduction
1-1
Micronics LX30WB System Board Manual
Features
The LX30WB includes the following features:
m Micronics' X30WB chipset with an external level 2 cache controller.
m Two VL-Bus slots.
m Three 16-bit and one 8-bit ISA slots.
m 100 percent VESA VL-Bus compliant.
m Local Bus IDE controller with Mode 3 local bus IDE support (optional).
m Floppy controller (Supports 1.44MB, 1.2MB, 720K, and 360K floppy
drives).
m Two high speed NS16450 compatible serial ports.
m Bi-directional parallel port.
m Supports the following processors:
- 486SX, 25 or 33MHz
- 486SX2, 50MHz
- 486DX, 33MHz
- 486DX2, 50 or 66MHz
- 486DX4, 75 or 100MHz (with optional power module)
Software Compatibility
The LX30WB system board has been thoroughly tested for compatibility with
a variety of operating systems and environments, including:
m Windows and Windows NT
m OS/2
m SCO UNIX and Open Desktop
m Novell Netware
m MS-DOS
m PC-DOS
1-2
Configuring the LX30WB
2
Although the LX30WB system board is packaged in protective materials, it is important to use care while unpacking and setting up.
Static Electricity
The LX30WB is shipped from the factory in an antistatic bag. To
reduce the possibility of damage, it is important to neutralize any
accumulated static charges on your body before handling the board.
The best way to do this is to ground yourself using a special wrist or
ankle strap. If you do not have a strap, you should touch both of your
hands to a safely grounded object. After you have grounded yourself,
ground the LX30WB via the solder pads surrounding one of its mounting holes.
Once the LX30WB is removed from its packaging, place it on top of the
antistatic bag. Carefully inspect the board for damage which may have
occurred during shipment.
Jumper Settings
Office Environment
Make sure the finished computer system is in an area with good ventilation. The system should not be in direct sunlight, near heaters, or
exposed to moisture, dust, or dirt.
2-1
Micronics LX30WB System Board Manual
LX30WB Components
Figure 2-1 LX30WB System Board
Note:
The black square indicates pin one of the component or jumper.
2-2
Jumper Settings
CPU Voltage
Warning:
This system board has been factory set to support 5.0V processors. If using
a 3.3V or 4.0V processor, you must install a Power Module (Appendix E).
Failure to install a Power Module could result in damage to the CPU.
Table 2-1 lists the voltage requirements for CPUs supported by this system
board.
CPU Manufacturer(s) Voltage
486SX Intel, AMD 5.0V
486DX Intel, AMD 5.0V
486DX2 Intel 5.0V
486DX2 AMD 3.3V or 5.0V
486SL-series Intel 5.0V
Write-Back Enhanced 486DX2 Intel 5.0V
486DX4 Intel, AMD 3.3V
Pentium OverDrive Intel 5.0V
Cyrix 486DX/DX2 Cyrix 5.0V
Cyrix 486DX2V-80 Cyrix 4.0V
Table 2-1 CPU Voltage Requirements
2-3
Micronics LX30WB System Board Manual
Jumper Settings
Table 2-2 and 2-3 list the jumper settings to select the type of CPU installed.
CPU W2 W4 W6 W7 W8 W9 W10
486SX open open 4-5 2-3 2-3 1-2 2-3
486DX/DX2
(default)
SL Enhanced SX 1-2 open 4-5 2-3 2-3 1-2 2-3
SL Enhanced DX2 1-2 open 4-5 1-2 & 3-4 2-3 1-2 2-3
Write-Back
Enhanced 486DX2
486DX4 open open 4-5 1-2 & 3-4 2-3 1-2 2-3
Pentium OverDrive open open 1-2 1-2 & 3-4 1-2 1-2 1-2
Cyrix 486DX/DX2 open open 2-3 1-2 & 3-4 2-3 2-3 2-3
AMD 486DXL2 open open 4-5 1-2 & 3-4 2-3 1-2 2-3
TI 486SXL open open 4-5 2-3 2-3 1-2 2-3
open open 4-5 1-2 & 3-4 2-3 1-2 2-3
2-3 closed 4-5 1-2 & 3-4 1-2 1-2 1-2
Table 2-2 CPU Selection
CPU W11 W12 W13 W14 W17 W18
486SX 3-4 2-3 open open 2-3 1-2
486DX/DX2
3-4 2-3 open 3-4 2-3 1-2
(default)
SL Enhanced SX 3-4 2-3 open open 2-3 1-2
SL Enhanced DX2 3-4 2-3 open 3-4 2-3 1-2
Write-Back
1-2 & 3-4 2-3 open 3-4 1-2 1-2
Enhanced 486DX2
486DX4 3-4 2-3 3.0X CLK open
3-4 2-3 1-2
2.5X CLK 1-2
2.0X CLK 2-3
Pentium OverDrive 3-4 2-3 open 2-3 1-2 1-2
Cyrix 486DX/DX2 2-3 1-2 open 3-4 1-2 2-3
AMD 486DXL2 3-4 2-3 open 3-4 2-3 1-2
TI 486SXL 3-4 2-3 open 1-2 2-3 1-2
Table 2-3 CPU Selection
2-4
Jumper Settings
Table 2-4 lists the jumper settings to select the size of the external cache.
Size W25 W26 W27 W28
128K 1-2 1-2 1-2 1-2
256K 2-3 2-3 2-3 2-3
Table 2-4 External Cache Size Selection
Table 2-5 lists the jumper settings to enable or disable the optional VL IDE
controller.
Jumper Function Setting
W33 Enable VL IDE controller (default)
Disable VL IDE controller
Table 2-5 VL IDE Selection
open
close
Table 2-6 lists the jumper settings to set the VL IDE hard disk controller’s
IRQ. Leave this set to IRQ14 unless you are using a SCSI controller and need
to free up an unnecessary IRQ, or if you want to use the ISA IDE controller as
the primary IDE controller.
Jumper Function Setting
W34 IRQ14 (default)
IRQ15
Table 2-6 VL IDE IRQ14 Selection
1-2
2-3
Table 2-7 lists the jumper settings to enable or disable the ISA IDE controller.
Jumper Function S etting
W37 Enable ISA IDE controller (default)
Disable ISA IDE controller
Table 2-7 ISA IDE Selection
2-3
1-2
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Micronics LX30WB System Board Manual
Table 2-8 lists the jumper settings to set the secondary IDE controller’s IRQ.
If you set this for IRQ14, you must disable the VL IDE controller (Table 2-4).
Jumper Function Setting
W41 IRQ15 (default)
IRQ14
Table 2-8 Secondary IDE Controller IRQ Selection
1-2
2-3
Table 2-9 lists the jumper settings to select the type of video installed.
Jumper Function Setting
W32 Color monitor (default)
Monochrome monitor
Table 2-9 Video Selection
close
open
Table 2-10 lists the jumper settings to select the bus speed.
Speed W15 W16
33MHz (default) close close
50MHz close open
40MHz open close
25MHz open open
2-6
Table 2-10 Bus Speed Selection
Jumper Settings
Table 2-11 lists the jumper settings for case and peripheral connections.
Jumper Function Notes
J10 VL IDE Connector Primary
J15 ISA IDE Connector Secondary
J11 Floppy Connector
J14 Parallel Port Connector Can be disabled in
CMOS.
J12 Serial Port (Com 1) Can be disabled in
CMOS.
J13 Serial Port (Com 2) Can be disabled in
CMOS.
J9 AT Keyboard
J1 & J2 Power Supply Connector
W43 Turbo LED 1-5V DC; 2- Ground
W42 Turbo Switch
W30 Reset
W40 IDE LED 1-5V DC; 2- G round
J4 Keylock/ Power LED 1- Power; 2-N/C; 3-
Ground; 4-5V DC
J16 Speaker Connector 1-Speaker; 2-N/C;
3-Ground; 4-5V DC
Table 2-11 Peripheral and Case Connections
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Micronics LX30WB System Board Manual
2-8
Installing System Memory and Add-On Peripherals
Installing the LX30WB, System
3
Memory, CPUs and Peripherals
This section explains how to install the LX30WB system board,
SIMMs, CPUs, and peripherals.
Warning:
Before installing or removing any peripherals or components, make
sure you have a clear work space and that you adhere to all anti-static
precautions described on page 2-1. Micronics recommends that only
trained technicians operate on the system board. Damage which
occurs to the board while adding or removing peripherals or components may void the warranty.
If problems arise while installing peripherals, contact the computer
outlet where you purchased the peripheral or Micronics’ Technical
Support Department.
3-1
Micronics LX30WB System Board Manual
Installation of the LX30WB
The installation of the LX30WB system board depends on the type of case you
use. The LX30WB is a Mini AT system board and can be installed in most
cases.
Prior to installing the LX30WB, make sure you have a clear work space
available and adhere to all anti-static precautions.
If you are unfamiliar with installing a system board, Micronics highly recommends you read the computer user’s manual or contact your dealer’s technical
support department.
Tools Required
Micronics recommends using the following tools to install the LX30WB:
m Small Phillips screwdriver.
m Tweezers or a pair of needle-nose pliers.
m Tray (to hold loose screws).
Equipment Required
Micronics recommends using the following equipment with the LX30WB for
a typical configuration:
m Chassis with standard hardware.
m A high quality power supply capable of providing continuous power
within a 5 volt range, plus or minus 5% (eg., 4.75 to 5.25). A power
filter may be used with a noisy AC power source..
m AT-compatible keyboard.
m Eight ohm speaker.
m Standard ribbon cables for internal connections.
m Standard power cord (grounded).
m Heat sink with cooling fan.
3-2
Installing System Memory and Add-On Peripherals
System Memory
System memory devices, commonly known as SIMMs (Single Inline Memory
Modules), are necessary to operate the LX30WB system board. The LX30WB
has three SIMM sockets and can be upgraded to 96 Megabytes of RAM. This
section will explain the type of SIMMs supported, list the memory configurations supported, and show how to physically install the new SIMMs.
SIMMs Supported
The LX30WB supports the following 72 pin, 60 or 70ns SIMMs:
4MB (1Mx36 or 1Mx32)
8MB (2Mx36 or 2Mx32)
16MB (4Mx36 or 4Mx32)
32MB (8Mx36 or 8Mx32)
Note:
For long term reliability, Micronics recommends using SIMMs with tin-plated
contacts. The use of gold-plated contacts may conflict with the tin alloy of the
SIMM socket.
3-3
Micronics LX30WB System Board Manual
Memory Configurations
The following table (Figure 3-1) lists the memory configurations supported.
Bank 0 Bank 1 Bank 2 Total
4MB 4MB
8MB 8MB
4MB 4MB 8MB
4MB 8MB 12MB
4MB 4MB 4MB 12MB
16MB 16MB
8MB 8MB 16MB
4MB 4MB 8MB 16MB
4MB 16MB 20MB
4MB 8MB 8MB 20MB
8MB 8MB 8MB 24MB
8MB 16MB 24MB
4MB 4MB 16MB 24MB
4MB 8MB 16MB 28MB
32MB 32MB
16MB 16MB 32MB
8MB 8MB 16MB 32MB
4MB 16MB 16MB 36MB
8MB 16MB 16MB 40MB
16MB 16MB 16MB 48MB
16MB 32MB 48MB
32MB 32MB 64MB
16MB 16MB 32MB 64MB
16MB 32MB 32MB 80MB
32MB 32MB 32MB 96MB
3-4
Table 3-1 Memory Configurations
Installing System Memory and Add-On Peripherals
Installing the SIMMs
To install the SIMMs, locate the memory banks on the system board. Find the
lowest bank number available (0, 1, 2) and work your way up.
Perform the following steps to install the SIMMs:
1. Hold the SIMM so that the notched edge is aligned with the notch on
the SIMM socket (Figure 3-1).
2. Insert the SIMM at a 45 degree angle.
3. Gently push the SIMM into an upright position until it “snaps” into
place (past the release tabs).
Figure 3-1 Installing a 72-Pin SIMM
Removing SIMMs
Perform the following steps to remove SIMMs, if necessary:
1. With both thumbs (or fingers), press the release tabs away from the
socket.
2. With the SIMM free from the release tabs, lift the module up and
place in an anti-static bag or package.
Installing a CPU
The LX30WB is designed to support a large variety of 486 processors. If you
want to upgrade your processor, it is recommended you bring your system and
this manual to your local dealer or a qualified repair center.
3-5
Micronics LX30WB System Board Manual
Installing Cache Memory
In addition to the internal (L1) cache built into the CPU, the LX30WB also
supports external (L2) cache. The LX30WB is available with 128K or 256K
external cache.
To upgrade to 256K cache, install five 32Kx8-15ns SRAMs into the open
SRAM sockets (Figure 3-2). After installing the cache upgrade, refer to Table
2-4 for the correct external cache jumper settings.
Figure 3-2 Upgrading the External Cache
3-6
Installing System Memory and Add-On Peripherals
Installing a VL-Bus Peripheral Card
Micronics VL-Bus slots accommodate all VL-Bus cards which meet the
VESA specifications. Complete the following steps to install a VL-Bus card:
1. Turn the computer system off and remove the cover.
2. Choose an unused VL-Bus slot and remove the slot cover.
3. Insert the card with the bottom edge level to the slot. Never insert
the card at an angle!
4. Carefully push the card straight down, making sure the card is fully
inserted.
5. Replace the screw which holds the card into place.
6. Replace the computer cover.
7. Read the card’s manual for additional instructions concerning
installation and software drivers.
Figure 3-3 Installing a VL-Bus Card
3-7
Micronics LX30WB System Board Manual
3-8
The BIOS Setup Utility
4The BIOS Setup Utility
Configuration
After the LX30WB system board and all hardware is installed, the
system is ready for configuration. Before turning on the computer,
make sure all cables are correctly connected and all jumpers are correctly set.
It is recommended you keep the computer cover off the first time you
boot the system. If you have any difficulties, they will be easier to
correct.
Initial Boot Up
Power up the LX30WB. If the system doesn’t properly boot, check all
your cables and peripherals for bad connections. You may also get error
messages or beep codes. If this occurs, consult Appendices A and/or B
for a guide to possible solutions.
After the system properly boots, it is ready to be configured. The
following pages explain the proper procedures for BIOS configuration.
4-1
Micronics LX30WB System Board Manual
Setup
The Setup procedure is built into the system. Setup begins after the completed
system is powered up. Once the system is powered up and goes through a
memory test, the following screen appears on your monitor:
Figure 4-1 Power-Up Screen
If the systems detects a configuration error, it displays an error message. After
the error message, another message displays indicating the choice to “press
<F1> to continue (boot up), or <F2> to run the Setup procedure.” Normally,
you will press <Ctrl>, <Alt>, and <Esc> simultaneously to begin the Setup
procedure.
4-2
The BIOS Setup Utility
Running the Setup Procedure
Upon pressing <F2>, the CMOS Main Screen (Figure 4-2) should appear and
the prompt should be on the time line. If the Power-Up Screen does not
appear but a DOS prompt does (i.e., A:\ or C:\), press the <Ctrl>, <Alt>, and
<Esc> keys simultaneously to begin the Setup procedure.
The LX30WB system board has two CMOS configuration screens: the Main
Screen (Figure 4-2) and the Extended Screen (Figure 4-3). To toggle between
the screens, press the PgUp/PgDn keys.
Figure 4-2 CMOS Main Screen
Now, configure the parameters to match your specific requirements. See the
following pages for procedures on how to set the computer’s parameters.
To return to the CMOS configuration screens at any time to change or view
any of these parameters, press <Ctrl>, <Alt>, and <Esc> simultaneously.
4-3
Micronics LX30WB System Board Manual
Setting the CMOS Parameters
Before running the computer, certain parameters on the CMOS configuration
screens must be set so the computer properly operates. First, set the
parameters on the CMOS Main Screen, then press the PgUp/PgDn key, and set
the parameters on the CMOS Extended Screen.
Note:
Some of the parameters are already set and should not be changed. Only
change the settings if necessary.
Setting the CMOS Main Screen
System Time and Date
To set the time, use the minus <-> key to decrease the number and the plus
<+> key to increase the number. To move the prompt forward, use the right
arrow <→> key; to move the prompt backward, use the left arrow <← > key.
Follow the same procedure for the date.
Diskette Drive A or B
This allows you to configure a diskette drive added or removed from your
computer. Use the <+/-> keys to toggle between the options.
Hard-Disk Drive 1-4 (IDE Drives Only)
This selection allows you to configure a hard disk installed in your system.
Use the <+/-> keys to toggle between the options. See Appendix C for a
complete listing of all possible hard drive types.
To install most SCSI hard drives, select NOT INSTALLED. To manually
configure the hard drive, select USER CONFIG. Press the down arrow <↓>
key and type in the appropriate parameters. To automatically configure an
IDE hard drive, select AUTO CONFIG. Drives that can be Auto-Configured
report parameters to the BIOS.
Base Memory and Extended Memory
Both of these memory settings are automatically configured. Press the down
arrow <↓> key to move to the next selection.
4-4
The BIOS Setup Utility
Video Card
This sets the type of monitor required for your computer. The display peripheral supports VGA/EGA, CGA80, CGA40, Monochrome (MONO), or no
monitor at all. Use the <+/-> keys to toggle between the options.
System Speed
This parameter selects two speeds on the computer. When set to NORMAL,
the system operates at full speed. When set to SLOW, it runs at about half of
the normal speed.
Cache
This category allows you to enable both the internal and the external cache,
enable the internal cache only, or disable both caches. For optimal performance, select BOTH.
External Cache Mode
This selection sets the secondary cache scheme. Setting the scheme to
WRITE-BACK and placing jumper blocks on W16 and W17 will improve
performance up to 4%. Refer to Tables 2-7 and 2-10 for cache jumper
configuration.
CPU Type
This option lists the CPU installed.
4-5
Micronics LX30WB System Board Manual
Setting the CMOS Extended Screen
You can toggle between the Main screen and theExtended screen (Figure 4-3)
using the PgUp and PgDn key.
Figure 4-3 CMOS Extended Screen
System BIOS
The System BIOS Option allows you to Shadow, Shadow & Cache, or Disable
the BIOS Shadow on the system board. Choosing SHADOWED copies the
system’s BIOS into RAM for faster execution. Choosing SHADOWED &
CACHED caches the shadowed system BIOS for even higher performance.
This allows you to take advantage of the high-speed 32-bit bus and the 70
nanosecond RAM. Use the <+/-> key to toggle between the options.
Video BIOS
The Video BIOS Option allows you to Shadow, Shadow & Cache, or Disable
the BIOS Shadow on the system board. Choosing SHADOWED copies the
system’s video BIOS into RAM for faster execution. Choosing SHADOWED
& CACHED caches the shadowed video BIOS for even higher performance.
Use the <+/-> key to toggle between the options. The System BIOS Shadow
option must be set to SHADOW or SHADOW & CACHE before enabling the
Video BIOS Shadow options.
4-6
The BIOS Setup Utility
On Board Floppy
The On Board Floppy controller can be set to ENABLED or DISABLED.
Primary IDE
The VL-Bus IDE controller can be set to ENABLED or DISABLED.
Master Speed
The speed can be set for NORMAL, MEDIUM, or FAST. To improve the
performance of your system, see the manufacturer’s specifications to determine the optimal setting. The default setting is NORMAL.
Slave Speed
The speed can be set for NORMAL, MEDIUM, or FAST. To improve the
performance of your system, see the manufacturer’s specifications to determine the optimal setting. The default setting is NORMAL.
Secondary IDE
The ISA IDE controller can be set to ENABLED or DISABLED.
Serial Port 1
Serial Port 1 may be set for COM1 (default), COM3, or may be disabled. Be
sure this setting does not conflict with any other peripherals.
Serial Port 2
Serial Port 2 may be set for COM2 (default), COM4, or may be disabled. Be
sure this setting does not conflict with any other peripherals.
Parallel Port
The parallel port may be set for LPT1 (default), LPT2, or may be disabled. Be
sure this setting does not conflict with any other peripherals.
Parallel Port Mode
The parallel port may be set for AT mode (output only), PS/2 mode (bidirectional), or may be disabled.
Energy Saving Timer
The Energy Saving Timer conserves energy by putting the system into a “sleep
mode.” When the system is in sleep mode, it consumes less energy.
If a specified time elapses and no keystrokes or mouse movements are
performed, the computer goes into sleep mode. This category can be set for
one minute or in increments of fifteen minutes (up to 120 minutes). After the
4-7
Micronics LX30WB System Board Manual
allotted time, the CPU will stop. To return to full processing speed, press any
key.
Non-Cacheable Area
This category allows a block of 32-bit memory to be set as NONCACHEABLE. The size and address can be selected. The sizes include: 64K,
128K, 256K, 512K, 1M, 2M, and 4M.
To select the memory to be Non-Cacheable, use the <+/-> keys to change the
first three zeros to the appropriate address (only these zeros can be changed).
It must start from 0000000h to 0FF0000h (15.94MB). The default setting for
this category is UNDEFINED.
Keyboard
If the keyboard category is set to INSTALLED, the computer will test the
keyboard during boot. If set for NOT INSTALLED, the system will ignore
any keyboard errors and always attempt to boot. Set this for INSTALLED
unless using the system board in an application which does not require a
keyboard.
System Password
When enabled, a password will be required to enter the system.
To set a system password, set this category to ENABLED. After you have
finished configuring the BIOS, press the <Esc> key to exit followed by the
<F4> key to save the changes and reboot. When the system reboots, it will ask
you to enter a new password. After you enter the new password, the System
Password feature will be in effect.
Warning:
If you forget your password, it cannot be changed without discharging the
CMOS.
Setup Password
When enabled, a password will be required to enter Setup.
To activate the Setup Password, set this category to ENABLED. After you
have finished configuring the BIOS, press the <Esc> key to exit followed by
the <F4> key to save the changes and reboot. After the system reboots, press
<Ctrl>, <Alt>, and <Esc> simultaneously to re-enter the setup program. On
re-entering the Setup program, you will be asked to enter a new password.
After you enter the new password, the Setup Password feature will be in
effect.
4-8
The BIOS Setup Utility
Re-Configuring Your Computer
Press the <Esc> key to reach the Exit Pop-Up Screen. Now select <F4> to
save and initialize the new Setup.
Figure 4-4 Exit Pop-up Screen
4-9
Micronics LX30WB System Board Manual
4-10
A
POST Messages
The following table lists the Power On Self Test (POST) messages,
possible causes, and solutions.
Message Possible Cause Solution
NO DISKETTE
CONTROLLER
DISKETTE DRIVE
RESET FAILED
DISKETTE DRIVE A
FAILURE
DISKETTE DRIVE B
FAILURE
DISKETTE READ
FAILURE; STRIKE
F1 TO RETRY
BOOT
DISPLAY ADAPTER
FAILED USING
ALTERNATE
ERRORS FOUND;
DISK X FAILED
INITIALIZATION
ERRORS FOUND;
INCORRECT
CONFIGURATION
INFORMATION;
MEMORY SIZE
MISCOMPARE
Disk controller not
found.
Disk adapter has failed
or is improperly
configured.
Drive A failed or is
missing.
Drive B failed or is
missing.
Disk is not formatted or
is defective.
The color/monochrome
switch is not set
correctly, or the primary
video adapter failed.
Hard disk configuration
information is incorrect.
The size of the base or
the expansion memory,
does not agree with
configuration
information.
Change the
Configuration.
Check the disk adapter.
Check the A drive.
Check the B drive.
Replace the diskette with
a formatted diskette and
retry.
Change the switch to the
correct setting, or check
the primary video
adapter.
Rerun SETUP and enter
the correct hard disk
information.
Enter correct memory
size and rerun SETUP
procedure.
POST Messages
A-1
Micronics LX30WB System Board Manual
Message Possible Cause Solution
FIXED DISK
CONFIGURATION
FAILURE
The specified
configuration is not
supported.
Correct the hard disk
configuration.
FIXED DISK
CONTROLLER
FAILURE
FIXED DISK X
FAILURE (where X
=0 or 1)
HARD READ
FAILURE- STRIKE
F1 TO RETRY
BOOT
FDD CONTROLLER
FAILURE
FDD A IS NOT
INSTALLED
FDD B IS NOT
INSTALLED
KEYBOARD CLOCK
LINE FAILURE or
KEYBOARD DATA
LINE FAILURE
The controller card has
Replace controller card.
failed.
The hard disk crashed. Press F1 to reboot or
rerun SETUP. If this does
not work, replace hard
disk.
The hard disk failed. Press F1 to reboot or
rerun Setup. If this does
not work, replace hard
disk.
Diskette controller failed. Replace controller card.
Cannot find diskette
controller for drive A.
Cannot find diskette
controller for drive B.
Install or replace
controller card.
Install or replace
controller card.
Keyboard logic failed. Make sure the keyboard
cable is connected
correctly.
KEYBOARD STUCK
KEY FAILURE
REAL TIME CLOCK
FAILURE
TIME-OF-DAY NOT
SET- RUN SETUP
PROGRAM
BIOS XXXX ROM
BAD CHECKSUM
(where
XXXX=C8000 to
E0000)
A-2
A key is jammed or was
held down during boot.
The real-time clock logic
failed.
The real-time clock timeof-day is not running.
The optional ROM
checksum is bad.
Make sure the keys are
not jammed or dirty.
Check battery and
replace, if necessary
Run SETUP utility.
Replace add-on card.
Message Possible Cause Solution
DISKETTE READ
FAILURE, or NOT A
BOOT DISKETTE, or
Hard/floppy disk failed or
is not bootable.
Replace the diskette with
a bootable diskette and
retry.
NO BOOT DEVICE
AVAILABLE
POST Messages
DECREASING
AVAILABLE
MEMOR Y, o r
MEMORY FAILURE
AT AAAAAAAA
READ XXXX
EXPECTING YYYY
(where AAAAAAAA
= failing address,
XXXX=data read,
and YYYY=data
written)
The memory data
integrity failed.
Check contact points
between memory
modules and system
board. Replace memory
modules if necessary.
A-3
Beep and POST Codes
Beep Codes
B
Beep codes are a series of beeps sent through the speaker which indicate
a problem during the Power On Self Test (POST). If text appears on the
video screen, the LX30WB has completed POST; any other tone from
the speaker indicates something other than a POST error. These tones
are not described in Table B-1.
The beep error codes are a series of three sets of beeps. The duration of
the beep tones are constant, but the length of the pauses between the
beeps varies. For example: a 1-3-3 beep code will sound like one beep,
a pause; three beeps consecutively, another pause; and then three more
beeps.
One beep code is often misunderstood. If a video card is not installed or
is failing, the system board will generate a long-short-long-short beep
code. This is often interpreted as a 1-2-1 beep code. But POST errors
always vary in the length of the pause and not the duration of the beep
tone.
Another way of identifying a POST error is to use a device called a
POST card. This peripheral card is inserted into one of the ISA slots
and has an LED (or LCD) read out showing the contents of port 80h.
The following table provides a list of all beep codes and probable
causes.
B-1
Micronics LX30WB System Board Manual
Beep code Contents
Description
Port 80h
None 01h C P U register test in progress.
1-1-3 02h CMOS read/write failure.
1-1-4 03h ROM BIOS check failure.
1-2-1 04h Programmable interval timer failure.
1-2-2 05h DMA initialization failure.
1-2-3 06h DMA page register write/read failure.
1-3-1 08h RAM refresh verifi cation failure.
None 09h First 64K RAM test in progress.
1-3-3 0Ah First 64K RAM chip or data line failure (multi-bit).
1-3-4 0Bh First 64K RAM odd/even logic failure.
1-4-1 0Ch Address line failure first 64K RAM.
1-4-2 0Dh Parity failure fir st 64K RAM.
2-1-1 10h Bit 0 first 64K RAM failure.
2-1-2 11h Bit 1 first 64K RAM failure.
2-1-3 12h Bit 2 first 64K RAM failure.
B-2
2-1-4 13h Bit 3 first 64K RAM failure.
2-2-1 14h Bit 4 first 64K RAM failure.
2-2-2 15h Bit 5 first 64K RAM failure.
2-2-3 16h Bit 6 first 64K RAM failure.
2-2-4 17h Bit 7 first 64K RAM failure.
2-3-1 18h Bit 8 first 64K RAM failure.
2-3-2 19h Bit 9 first 64K RAM failure.
2-3-3 1Ah Bit 10 first 64K RAM failure.
2-2-4 1Bh Bit 11 first 64K RAM failure.
2-3-1 1Ch Bit 12 first 64K RAM failure.
2-4-2 1Dh Bit 13 first 64K RAM failure.
Beep and POST Codes
Beep code Contents
Description
Port 80h
2-4-3 1Eh Bit 14 first 64K RAM failure.
2-4-4 1Fh Bit 15 first 64K RAM failure.
3-1-1 20h Slave DMA register failure.
3-1-2 21h Master DMA register failure.
3-1-3 22h Master interrupt mask register failure.
3-1-4 23h Slave interrupt mask register failure.
None 25h Interrupt vector loading in progress.
3-2-4 27h Keyboard controller test failure.
None 28h CMOS power failure and checks calculation in
progress.
None 29h C MOS configuration validation in progress.
3-3-4 2Bh Screen initialization failure.
3-4-1 2Ch Screen retr ace test failure.
3-4-2 2Dh Search for video ROM in progress.
None 2Eh Screen running with video ROM.
None 30h Screen operable.
None 30h Screen running with video ROM.
None 31h M onochrome monitor operable.
None 32h Color monitor (40 column) operable.
None 33h Color monitor (80 column) operable.
B-3
Micronics LX30WB System Board Manual
Code Beeps POST Routine Description
9C Set up Power Management.
9E Enable hardware interrupts.
A0 Set time of day.
A2 Check key lock.
A4 Initialize typematic rate.
A8 Erase F2 prompt.
AA Scan for F2 keystroke.
AC Ent er SETUP.
AE Clear in-POST flag.
B0 Check for errors.
B2 POST done - prepare to boot operating system.
B4 One beep.
B6 Check password (optional).
B8 Clear global descriptor table.
BC Clear parity checkers.
BE Clear screen (optional).
BF Check virus and backup reminders.
C0 Try to boot with INT 19.
D0 Interrupt handler error.
D2 Unknown interrupt error.
D4 Pending Interrupt.
D6 Initialize option ROM error.
D8 Shutdown error.
DA Extended Block Move.
DC Shutdown 10 error.
The following are for boot block in Flash ROM:
E2 Initialize the chipset.
E3 In itialize refresh counter.
E4 Check for Forced Flash.
E5 Check HW status of ROM.
E6 BIOS ROM is OK.
E7 Do a complete RAM test.
E8 Do OEM initialization.
E9 Initialize interrupt controller.
EA Read in the bootstrap code.
EB Initializ e al l vec t o rs .
EC Boot the Flash program.
ED Initialize the boot device.
EE Boot code was read OK.
B-4
CHard Disk Drive Types
The following table lists the hard disk types supported by LX30WB.
Type Cyl Hd Pre Sec Size
1 306 4 128 17 10
2 615 4 300 17 21
3 615 6 300 17 30
4 940 8 512 17 62
5 940 6 512 17 46
6 615 4 -1 17 20
7 462 8 256 17 30
8 733 5 -1 17 30
Hard Disk Drive Types
9 900 15 -1 17 112
10 820 3 -1 17 20
11 855 5 -1 17 35
12 855 7 -1 17 49
13 306 8 128 17 20
14 733 7 -1 17 42
15 N/A N/A N/A N/A N/A
16 612 4 0 17 20
17 977 5 300 17 40
18 977 7 -1 17 56
19 1024 7 512 17 59
20 733 5 300 17 30
21 733 7 300 17 42
C-1
Micronics LX30WB System Board Manual
Type Cyl Hd Pre Sec Size
22 733 5 300 17 30
23 762 8 -1 17 116
24 830 10 -1 39 68
25 1024 9 -1 17 76
26 918 7 -1 17 53
27 1024 8 -1 17 68
28 903 8 -1 46 162
29 1024 4 -1 17 34
30 820 6 -1 17 40
31 969 9 -1 34 144
32 615 8 -1 17 40
33 1024 5 -1 17 42
34 940 16 -1 26 190
35 1010 12 -1 55 325
C-2
36 903 4 -1 46 81
37 901 5 -1 53 116
38 980 5 128 17 40
39 966 16 -1 17 128
40 723 13 -1 51 234
41 1024 16 -1 63 504
42 966 5 -1 34 80
43 965 10 -1 17 80
44 776 8 -1 33 100
45 654 16 -1 63 321
46 683 16 -1 30 202
47 755 16 -1 17 100
User Config
Auto Config
Specifications
D
Processor Options Intel 486 SX 25 & 33MHz, PQFP.
Intel 486 DX 33MHz, PGA.
Intel 486 DX2 50 & 66MHz, PGA.
Intel 486DX4 75 & 100MHz.
Intel 486 DX2 3.3V Support.
Intel Pentium OverDrive Processor.
486 OverDrive Processor.
Expansion Two VL-Bus slots.
Three 16-bit ISA slots.
One 8-bit ISA slot.
Chip Set Micronics X30 single chip ASIC.
CMD 640A Local bus IDE (optional).
Winbond super I/O controller.
Specifications
RAM Capacity 96MB.
Form Factor Mini AT footprint (8.5" x 13").
4 Layer PCB.
Keyboard Standard AT keyboard support.
BIOS Phoenix BIOS on 512K EPROM.
Cache 8K of internal cache memory (may vary).
Cache Upgrade Optional 128K, or 256K of secondary cache
memory (write-through or write-back).
I/O Ports Built in support.
Two high speed serial ports (16450 compatible).
One bi-directional parallel port.
Enhanced Parallel Port (EPP)
compatible (optional).
Microsoft and Hewlett Packard
Extended Capabilities Port (ECP)
compatible (optional).
D-1
Micronics M54Hi System Board Manual
Floppy Port Supports two floppy drive (1.44, 1.2, 720K, 360K).
VL-Bus IDE Port Supports two IDE hard disks.
Mode 3 support.
Multiple sector transfer support.
LBA support.
Secondary IDE Support Supports two additional IDE hard disks.
Multiple sector transfer support.
LBA support.
Burn-in 48 hours (minimum).
Environmental Specifications
The environment in which the LX30WB is located is critical. Micronics
recommends the following environmental specifications:
Temperature Range
Operating: 50 to 104 degrees Fahrenheit (10 to 50 degrees Celsius).
Non-Operating: 50 to 140 degrees Fahrenheit (10 to 60 degrees Celsius).
Shipping: -22 to 140 degrees Fahrenheit (-30 to 60 degrees Celsius).
Relative Humidity
Operating: 20% to 80%
Non-Operating: 5% to 90%
D-2
Battery Disposal
Specifications
Warning:
DO NOT: open battery; dispose of in fire; recharge; put in backwards, mix
with used or other battery types.
May explode or leak and cause personal injury.
D-3
Micronics M54Hi System Board Manual
D-4
Installing a Power Module
Installing a Power Module
E
The LPM30 will accommodate a large variety of 486 processors. When
installing a 5.0V processor, locate J34 on your system board (see Figure
2-1) and configure it as shown below (Figure E-1).
Figure E-1 Configuring Jumper J34
To configure your system board for a 3.3V or 4.0V processor, you will
need to order a Power Module. If you do not have one, contact Micronics’ Customer Service department at (510) 651-2300.
To install a Power Module, remove all jumpers from Jumper J34 and
install it as shown below (Figure E-2 and E3).
Figure E-2 Installing a Power Module (Part # 09-00225-01)
E-1
Micronics LX30WB System Board Manual
Figure E-3 Installing a Power Module (Part # 09-00225-02)
After you have installed the Power Module, secure it with a tie strap (Figure
E-4 and E-5) and your installation is complete.
E-2
Figure E-4 Securing the Power Module (Part # 09-00225-01)
Installing a Power Module
Figure E-5 Securing the Power Module (Part # 09-00225-02)
E-3
FCC Statement
FCC Warning Statement
This equipment has been tested and found to comply within 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 in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not used in accordance with the instructions, may
cause harmful interference to radio communications. Interference to radio or
television reception 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:
M Reorient the receiving antenna.
M Increase the separation between the equipment and the receiver.
M Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
M Consult your dealer or an experienced radio/TV technician for help.
To meet FCC requirements, shielded cables and power cords are required.
Note:
Changes or modifications not expressly approved by Micronics could void the
user’s authority to operate the equipment.
F-1
Glossary
Glossary
16550 UART - A high speed chip for controlling
serial ports. Although unnecessary for a mouse,
it is required for modems that are 14,400 baud
or faster.
486DX - A type of 32-bit CPU with a built in
math-coprocessor and internal cache.
486DX2 - A 486DX CPU where the internal
speed of the CPU operates at twice the external
speed.
486DX4 - A 486DX CPU where the internal
speed of the CPU operates at three times the
external speed.
486SX - A 486DX CPU with no mathcoprocessor.
Asynchronous - Operations that do not require
the clocks of communicating devices to be
coordinated. See Synchronous.
Baby AT - A standard system board size
measuring approximately 13.25” x 8.5”.
Bidirectional Parallel Port - A type of parallel
port that can send and receive information.
BIOS - An Acronym for Basic Input/Output
System. Configures the system board and
provides hardware information to the operating
system.
Bit - A contraction of Binary digit. The smallest
unit of information in a binary number system.
A bit represents a choice between either zero or
one.
Boot - To start up the computer and load the
operating system software. See cold boot and
warm boot.
Byte - A group of adjacent bits treated as a unit.
Eight bits are typically considered one byte.
Also called a character.
Cache - A process where information is copied
from the slower memory (DRAM) to the faster
memory (SRAM). Information that is likely to
be read or edited is stored in the cache
providing significant performance increases.
Cache hit - The percentage of request for data
from memory that can be served from the
cache.
Cache miss - A memory access which cannot be
supplied from cache.
Cold Boot - Starting the computer by turning on
the power or pressing the RESET button. A
cold boot makes the processor execute all of the
diagnostics. See boot and warm boot.
CPU - An acronym for Central Processing Unit.
A CPU performs arithmetic calculations, makes
logical decisions, and directs the operation of
the computer in conjunction with the operating
system.
Disk Drive - A hardware device which provides
for the storage of data on diskettes or hard
metal disks that have a magnetic coating. A
disk drive functions by spinning at high speed
while moving a device called the read/write
head across the disk’s surface in order to read
or write data in magnetic code.
DRAM - An acronym for Dynamic Random
Access Memory. A type of memory chip that
only keeps its memory if supplied with regular
clock pulses and a chance to regularly refresh
its data. It is slower and more cost effective
than SRAM. See SRAM.
Bus - A group of electronic paths used to send
data between parts of the system. On a system
board, the bus connects the peripheral cards
with the microprocessor via the expansion slots.
Bus Mastering - The ability of an peripheral
card to control the bus without requiring
intervention of the CPU.
ECP - An acronym for Expanded Capabilities
Port. A standard set by Hewlett Packard and
Microsoft Corporation to expand the capabilities of the parallel port.
EDO Memory - An acronym for Extended Data
Output. A type of DRAM with built-in cache.
G-1
Micronics LX30WB System Board Manual
EISA - An acronym for Extended Industry
Standard Architecture. EISA is a bus design
standard which is fully backward compatible
with the ISA bus. Although it is a 32-bit bus, it
only runs at 8MHz. See PCI, VESA, and ISA.
EPP - An acronym for Enhanced Parallel Port.
A standard which increases the capabilities of
the parallel port.
EPROM - Acronym for Erasable Programmable
Read Only Memory. A type of ROM chip that
can be programmed with relatively simple tools
that will retain its data until erased. It can only
be erased by exposing the circuitry in the chip
to ultraviolet light. See also Flash ROM.
L1 Cache - See Internal Cache.
L2 Cache - See External Cache.
LBA - An acronym for Logical Block
Addressing. Any IDE hard drive that is larger
than 528MB.
Math coprocessor - A microprocessor designed
specifically for performing mathematical
calculations. A math coprocessor performs
these calculations faster than the CPU, and by
doing so, frees the CPU for other activities.
Megabyte (MB) - 1,024 Kilobytes or 1,048,576
bytes.
External Cache - Cache which is external to the
CPU. See Cache.
Fast SCSI - A SCSI data transfer standard that
allows a rate of up to 10MB/sec.
Fast Wide SCSI - A SCSI data transfer that
allows a rate of up to 20MB/sec.
Flash ROM - A type of ROM chip that will
retain its data until erased. It can be erased or
reprogrammed by supplying it with +12V of
voltage. See ROM and EPROM.
Full Size - A standard system board size
measuring approximately 12" x 13.75".
Gigabyte - A disk storage capacity measurement. Approximately one thousand megabytes
or 1,073,741,824 bytes.
IDE - An acronym for Integrated Device
Electronics. A standard for communicating
between a hard drive and a computer.
Internal Cache - Cache which is built into the
CPU. See Cache.
ISA - An acronym for Industry Standard
Architecture. A well-established bus standard
that originated with the IBM AT. See PCI,
VESA, and EISA.
Jumper - a small plug that fits over and shorts
pins on a circuit board. Jumpers allow the
various functions of the board to be enabled or
disabled.
Kilobyte (KB) - 1,024 bytes.
Mini AT - A standard system board size
measuring approximately 8.5" x 9.5".
Mode 1 - An IDE data transfer standard that
supports transfer rates of up to 5.22 Mbytes/sec.
Mode 2 - An IDE data transfer standard that
supports transfer rates of up to 8.33 Mbytes/sec.
Mode 3 - An IDE data transfer standard that
supports transfer rates of up to 11.1 Mbytes/sec.
Mode 4 - An IDE data transfer standard that
supports transfer rates of up to 15.5 Mbytes/sec.
Parallel - A form of data transmission in which
the data is sent one byte at a time over several
wires that each carry one byte. In parallel
transmission, all the bytes arrive simultaneously, as opposed to serial transmission in
which bits arrive one by one.
Parallel Port - A connection for a printer or
similar peripheral. Generally, parallel ports are
output only. See Bidirectional Parallel Port and
ECP.
PCI - An acronym for Peripheral Component
Interconnect. A high performance 32-bit or 64bit bus developed by Intel Corporation. PCI is
designed to be independent of the hardware
architecture to ensure compatibility with future
computer systems. See VESA, EISA, and ISA.
Pentium- A high performance 64-bit CISC
processor designed and manufactured by Intel
Corporation. As of this writing, Pentium is the
highest performing X86 processor available.
G-2
Plug and Play - A standard developed to ensure
easy installation of peripherals. Theoretically, a
newly installed card will automatically
configure itself and work properly without
requiring jumper configuration or device
drivers.
POST - An acronym for Power On Self Test. A
diagnostic program that is run whenever the
system is cold booted.
RAM - An acronym for Random Access
Memory. A type of memory that is used as the
“working memory” of a computer system. See
DRAM and SRAM.
ROM - An acronym for Read Only Memory. A
type of memory that retains its data without
requiring power. Once written, it cannot be
modified. See EPROM and Flash ROM.
Glossary
SIMM - An acronym for Standard Inline
Memory Module. A small printed circuit board
containing memory chips.
SRAM - An acronym for Static Random
Access Memory. A type of memory that can
retain data without requiring a regular clock
signal. Although they are faster than DRAM,
they hold less data and are more expensive.
Synchronous - Protocols that require the clocks
of communicating machines or devices to be
coordinated.
Synchronous Cache - A type of cache that uses
a clock signal to latch the inputs and the data
output. This structure spreads the cache access
across two or three cycles while maintaining a
bandwidth of one access per cycle. Improves
performance by 5-10%.
SCSI - An acronym for Small Computer
Systems Interface. An interface standard used
to interface hard disk drives, removable
cartridge drives, tape drives, and CD-ROMs to
the computer system. SCSI allows multiple,
high-performance peripheral devices to be
connected in a chain. Each has its own address.
Data and control signals are sent along the chain
and only the specifically addressed device
responds.
SCSI II - An interface standard that adds
features to the SCSI standard. These include
32-bit data transfer, command queuing, Fast
SCSI, and support for a wider variety of
peripherals.
SCSI III - A proposed standard that will support
transfer rates of up to 40MB/sec.
Serial - A type of data transmission in which the
data is sent one bit at a time over a single wire.
See parallel.
Serial Port - A communications port used to
connect peripherals such as modems and mice.
Setup - A program which allows you to make
changes to the system configuration.
Shadow RAM - A technique used to load a
duplicate copy of BIOS from slower ROM into
faster RAM. This enhances system performance
because it provides higher access speed to the
BIOS.
Terabyte - A measurement for very, very large
storage capacity. One Terabyte is equivalent
one-thousand gigabytes, one-million megabytes, or 1,099,511,627,766 bytes.
VESA - An acronym for Video Electronics and
Standards Association.
VESA Localbus (VL-Bus) - A high performance bus designed by VESA. A 32-bit
version of the ISA bus which operates at the
speed of the computer’s CPU. See PCI, EISA,
and ISA.
VGA - An acronym for Video Graphics Array.
A standard for monitor displays.
VR - Pentium CPU voltage ranging from 3.300
- 3.465 Volts.
VRE - Pentium CPU voltage ranging from
3.400 - 3.600 Volts.
Warm Boot - Restarting the system by
simultaneously pressing the <Ctrl>, <Alt>, and
<Delete> keys.
Write-Back Cache - Upon a cache hit, the
cache is updated and the main memory is not
affected. Upon a cache miss, only the main
memory is updated.
G-3
Micronics LX30WB System Board Manual
Write-Through Cache - Upon a cache hit, the
cache and the main memory are updated.
Upon a cache miss, only the main memory is updated.
G-4
Warranty
Limited Warranty
Except as described below, Micronics warrants the products to be free from
defects in material and workmanship in normal use for a period of one (1) year
from date of purchase. Should any product fail to perform according to this
warranty at any time during the warranty period, except as provided below,
Micronics or its authorized service centers will, at Micronics’ option, repair or
replace the product at no additional charge.
The warranty does not cover loss or damage which occurs in shipment or
which is due to: (1) improper installation or maintenance, misuse, neglect or
any cause other than ordinary commercial application, including without
limitation, accidents or acts of God; (2) adjustment, repair, or modification by
other than a Micronics authorized service center; (3) improper environment,
excessive or inadequate heating or air conditioning, or electrical power
failures, surges or other irregularities; (4) any statement about the product
other than those set forth in this warranty; or (5) nonconformity to models or
samples shown to the purchaser. Any models or samples were for the sole
purpose of suggesting the character of the product and are not intended to
form the basis of the bargain.
A receipt or copy of the invoice with the date of purchase from a Micronics
reseller is required before any warranty service can be rendered. Service can
be obtained by calling Micronics for a Return Merchandise Authorization
(RMA) Number.
The RMA Number should be prominently displayed on the outside of the
shipping carton of the returned product. Returned product should be shipped
prepaid or hand carried to Micronics. The purchaser assumes risk of loss or
damage in transit, and unless otherwise agreed to in writing by Micronics, will
pay inbound shipping charges.
The exclusive remedy of the purchaser under this warranty above will be
repair or replace at Micronics’ option, but if for any reason that remedy should
fail of its essential purpose, the exclusive remedy of the purchaser shall then
be actual damages up to amounts paid for the defective product by the
purchaser. This limited warranty shall be deemed to “fail of its essential
purpose” if, after repeated efforts, Micronics is unable to make the product
operate as warranted. Micronics’ liability for damages to the purchaser for
any cause whatsoever; regardless of the form of action and whether in contract
or in tort, shall be limited to the purchase price in effect when the cause of
action arose for the product that is the basis of the claim.
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Micronics LX30WB System Board Manual
Micronics will not be liable for any lost profits or any indirect, special
incidental or consequential damages in connection with the product, even if
Micronics has been advised of the possibility of such damages.
Micronics makes no warranties or representations as to performance of
products or as to service to distributor or to any person, except as set forth in
Micronics; limited warranty accompanying delivery of product.
Micronics disclaims all other warranties whether oral, written, expressed, or
implied, including without limitation, the warranties of design, merchantability, or fitness for a particular purpose, if applicable, or arising from a course of
dealing, usage or trade practice.
Non-Warranty Service
After the one year warranty service is no longer in effect, repair service is still
available for Micronics products. For more information, contact Micronics’
RMA department at (510) 683-0428 or (510) 683-0389. The RMA department is open between 8:30 A.M. and 5 P.M. Pacific Standard Time.
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