APC Captor M User Manual

+

M

Captor

Motherboard

Installation Guide

Introduction

Table of Contents

Notice........................................................IV

Introduction............................................V

Chapter 1 Pre-Configuration...... 1

Step 1 Setting the Jumpers 3

Jumper Locations ............................................................. 4

CMOS Reset....................................................................... 5

ATA-Disk Connector Voltage Selection.......................... 5

RS422/RS485 Termination Resistors (optional) ............ 5

Audio Jack Output Selection........................................... 6

Backlight Logic Voltage Selection .................................. 6

Inverter Voltage Selection................................................ 6

Step 2 SDRAM, CPU, and Cables
Installation

Captor M Memory Configuration..................................... 7

CPU Installation ................................................................ 7

Installing Cables ............................................................... 9

Power and Control Panel Cables .................................... 9

Installing Peripheral Cables............................................. 9

Index of Connectors ....................................................... 12

7

Chapter 2 AMIBIOS8 Setup....... 15

Main Setup....................................................................... 18

Advanced BIOS Setup.................................................... 18

PCI/PnP Setup ................................................................. 33

Boot Setup....................................................................... 36

Security Setup................................................................. 39

Chipset Setup.................................................................. 42

Power Management Setup ............................................. 48

Exit Menu ......................................................................... 48

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Captor M – Installation Guide

Chapter 3 Upgrading.................... 51

Upgrading the Microprocessor...................................... 51

Upgrading the System Memory..................................... 51

Appendix A Technical
Specifications

Chipsets........................................................................... 53

BIOS ................................................................................. 53

Embedded I/O.................................................................. 53

Industrial Devices ........................................................... 55

Miscellaneous ................................................................. 56

Memory Map .................................................................... 57

DMA Channels................................................................. 57

I/O Map ............................................................................. 58

PCI Configuration Space Map........................................ 59

Interrupts ......................................................................... 60

SMBUS ............................................................................. 60

PCI Interrupt Routing Map ............................................. 61

Connectors Pin-out......................................................... 61

..................................... 53

Appendix B Flash BIOS
programming and codes

Troubleshooting POST................................................... 73

Critical Error BEEP Codes ............................................. 80

............... 73

Appendix C On-Board Industrial

Devices

Post Code Display .......................................................... 81

ISA Bridge........................................................................ 81

On-board Ethernet .......................................................... 82

Serial Ports ...................................................................... 83

Watchdog Timer.............................................................. 90

II

........................ 81

Introduction

Appendix D On-Board Video

Controller................... 91

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Captor M – Installation Guide

Notice

The company reserves the right to revise this publication or to change
its contents without notice. Information contained herein is for
reference only and does not constitute a commitment on the part of the
manufacturer or any subsequent vendor. They are in no way
responsible for any loss or damage resulting from the use (or misuse) of
this publication.

This publication and any accompanying software may not, in whole or
in part, be copied, photocopied, translated or reduced to any machine
readable form without prior consent from the vendor, manufacturer or
creators of this publication, except for copies kept by the user for
backup purposes.

Brand and product names mentioned in this publication may or may not
be copyrights and/or registered trademarks of their respective
companies. They are mentioned for identification purposes only and are
not intended as an endorsement of that product or its manufacturer.

First Edition.

January, 2005

IV

Introduction

Introduction

Thank you for your purchase of the Captor M industrial single board
computer motherboard. The Captor M design was based on the Intel
855GME chipset providing the ideal platform to industrial applications.
The Captor M design is based on the Intel Pentium M and Celeron M
(µFC-PGA 478) processors.

With proper installation and maintenance, your Captor M will provide
years of high performance and trouble free operation.

This manual provides a detailed explanation into the installation and
use of the Captor M industrial embedded motherboard. This manual is
written for the novice PC user/installer. However, as with any major
computer component installation, previous experience is helpful and
should you not have prior experience, it would be prudent to have
someone assist you in the installation. This manual is broken down into
3 chapters and 4 appendixes.

Chapter 1 - System Board Pre-Configuration

This chapter provides all the necessary information for
installing the Captor M. Topics discussed include: installing
the CPU (if necessary), DRAM installation and jumper
settings. Connecting all the cables from the system board to
the chassis and peripherals is also explained.

Chapter 2 - BIOS Configuration

This chapter shows the final step in getting your system
firmware setup.

Chapter 3 - Upgrading

The Captor M provides a number of expansion options
including memory. All aspects of the upgrade possibilities are
covered.

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Captor M – Installation Guide

Appendix A - Technical Specifications

A complete listing of all the major technical specifications of
the Captor M is provided.

Appendix B - Flash BIOS Programming and Codes

Provides all information necessary to program your
AMIBIOS8 Flash BIOS. POST Codes and beep codes are
described in details.

Appendix C – On-Board Industrial Devices

Two on-board 10/100 (10/100/1000 optional) Ethernet
controllers (second Ethernet optional), ISA bridge, six serial
ports (one optional RS422/485), watchdog timer and Post
Code Display.

Appendix D - On-Board Video Controller

On-board CRT and LVDS video controller.

Static Electricity Warning!

The Captor M has been designed as rugged as possible but can still be
damaged if jarred sharply or struck. Handle the motherboard with care.
The Captor M also contains delicate electronic circuits that can be
damaged or weakened by static electricity. Before removing the Captor
M from its protective packaging, it is strongly recommended that you
use a grounding wrist strap. The grounding strap will safely discharge
any static electricity build up in your body and will avoid damaging the
motherboard. Do not walk across a carpet or linoleum floor with the
bare board in hand.

Warranty

This product is warranted against material and manufacturing defects
for two years from the date of delivery. Buyer agrees that if this
product proves defective the manufacturer is only obligated to repair,

VI

Introduction

replace or refund the purchase price of this product at manufacturer's
discretion. The warranty is void if the product has been subjected to
alteration, misuse or abuse; if any repairs have been attempted by
anyone other than the manufacturer; or if failure is caused by accident,
acts of God, or other causes beyond the manufacturer's control.

Captor M - An Overview

The Captor M represents the ultimate in industrial embedded
motherboard technology. No other system board available today
provides such impressive list of features:

CPU Support

• Supports full series of Intel Pentium M, Intel Pentium M on
90nm process with 2MB L2 cache and Celeron M 400MHz PSB
processors featuring next-generation Intel SpeedStep® technology
on the µFC-PGA 478 package.

Supported Bus Clocks

• 400MHz.

Memory

• Two DIMM sockets up to 2GB (unbuffered, ECC & non­ECC) DDR SDRAM, PC1600 (DDR 200MHz), PC2100 (DDR
266MHz) and PC2700 (DDR 333MHz). Please, refer to chapter 3
for memory details.

On-Board I/O

• 2 Floppies up to 2.88 MB.

• Dual channel PCI 32-bit EIDE controller – UDMA 66/100

supported. One extra connector (mini-Header 44 pin) in parallel to
IDE2 for Solid State IDE disk or any 44 pin IDE device support.

• Six high speed RS-232 serial ports 16 Bytes FIFO (16550).
COM2 optional RS-232 IrDA and COM1 optional RS-422/485.

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Captor M – Installation Guide

r

• One Centronics™ compatible bi-directional parallel port.
EPP/ECP mode compatible.

• One PS/2 mouse/keyboard combined connector.

• Six Universal Serial Bus connectors, USB 1.1 and USB 2.0

compliant.

• One PICMIG 1.0 rev 2 edge connector (PCI & ISA) and one
mini-PCI slot.

• Two RJ45 Ethernet connectors (second optional, both optional
10/100/1000).

• Power Button – advanced management support.

• Automatic CPU voltage & temperature monitoring device.

• On-board Buzzer.

• Audio (AD1981B) AC97 compliant. Microphone In, Stereo

Line In and Out, CD In.

• On-board POST Display Diagnostics.

• On-board watchdog timer.

ROM BIOS

• American Megatrends AMIBIOS8 with FLASH ROM.

On-Board CRT & LVDS video controller

• Standard CRT video controller (Intel 855GME chipset).

• Dedicated Local Flat Panel (LFP) LVDS interface.

Conventions Used in this Manual

Notes - Such as a brief discussion of memory types.



Important Information - such as static warnings, o

8



VIII

very important instructions.

When instructed to enter keyboard keystrokes, the
text will be noted by this graphic.

Chapter 1: Pre-Configuration

r

p

l

d

Chapter 1 Pre-Configuration

This chapter provides all the necessary information for installing the
Captor M into a standard PC chassis with a PICMIG backplane. Topics
discussed include: installing the CPU (if necessary), DRAM
installation and jumper settings.

Handling Precautions

The Captor M has been designed to be as rugged as possible but it can
be damaged if dropped, jarred sharply or struck. Damage may also
occur by using excessive force in performing certain installation
procedures such as forcing the system board into the chassis or placing
too much torque on a mounting screw.

Take special care when installing or removing the system memory
DIMMs. Never force a DIMM into a socket. Screwdrivers slipping off
a screw and scraping the board can break a trace or component leads,
rendering the board unusable. Always handle the Captor M with care.



Products returned for warranty repair will be
inspected for damage caused by imprope
installation and misuse as described in the

revious section and the static warning below.
Should the board show signs of abuse, the
warranty will become void and the customer wil
be billed for all repairs and shipping an
handling costs.

Special Warranty Note:

Static Warning

The Captor M contains delicate electronic semiconductors that are
highly sensitive to static electricity. These components, if subjected to a
static electricity discharge, can be weakened thereby reducing the
serviceable life of the system board. BEFORE THE BOARD IS
REMOVED FROM ITS PROTECTIVE ANTISTATIC PACKAGING,

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Captor M – Installation Guide

TAKE PROPER PRECAUTIONS! Work on a conductive surface that
is connected to the ground. Before touching any electronic device,
ground yourself by touching an unpainted metal object or, and highly
recommended, use a grounding strap.

2

Chapter 1: Pre-Configuration

f

Step 1 Setting the Jumpers

Your Captor M is equipped with a large number of peripherals. As
such, there are a large number of configuration jumpers on the board.
Taken step by step, setting these jumpers is easy. We suggest you
review each section and follow the instructions.

Special note about operating frequency:



The Captor M has the ability to run at a variety o
speeds without the need to change any crystal,
oscillator or jumper.

Jumper Types

Jumpers are small copper pins attached to the system board. Covering
two pins with a shunt closes the connection between them. The Captor
M examines these jumpers to determine specific configuration
information. There are two different categories of jumpers on the
Captor M.

A. Two pin jumpers are used for binary selections such as enable,
disable. Instructions for this type of jumper are open, for no shunt over
the pins or closed, when the shunt covers the pins.

B. Three or four pin jumpers are used for multiple selections.
Instructions for these jumpers will indicate which two pins to cover.
For example: for JPx 2-3 the shunt will be covering pins 2 and 3
leaving pins 1 and 4 exposed.

How to identify pin number 1 on Figure 1-1: Looking to the solder side
(The board side with fewer components) of the PCB (Printed Circuit
Board), pin number 1 will have a squared pad J. Other pins will have
a circular pad Q. They are numbered sequentially.

Double row jumpers are numbered alternately, i.e. pin number 2 is in
the other row, but in the same column of pin number 1. Pin number 3 is
in the same row of pin 1, but in the next column and so forth.

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Captor M – Installation Guide

Jumper Locations

Use the diagram below and the tables on the following pages to locate
and set the on-board configuration jumpers.

Figure 1-1 Jumper Locations

4

Chapter 1: Pre-Configuration

CMOS Reset

This option is provided as a convenience for those who need to reset
the CMOS registers. It should always be set to "Normal" for standard
operation. If the CMOS needs to be reset, turn off the system, move
JP4 to 2-3, turn the system on, move jumper to 1-2 and press reset.

Table 1-1 CMOS Reset

Reset CMOS Normal Clear CMOS

JP4 1-2* 2-3

* Manufacturer's Settings.

ATA-Disk Connector Voltage Selection

The ATA-Disk Connector J8 can provide either 5Vcc or 3.3Vcc. The
jumper JP3 selects the voltage.

Table 1-2 ATA-Disk Connector Voltage Select

ATA-Disk

Voltage

5Vcc 3.3Vcc

JP3 1-2* 2-3

*Manufacturer's Settings.

RS422/RS485 Termination Resistors (optional)

The Jumper JP5 allows the insertion/removal of the termination
resistors (120Ω) in the Receiver and Transmitter lines of the COM1
when operating in RS-422/485 mode.

Table 1-3 COM1 RS-422/485 Tx & Rx Termination Resistor
Selection

Termination

resistor

Transmitter Receiver

selection

JP5 1-3 2-4

* Manufacturer's Setting is off.

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Captor M – Installation Guide

Audio Jack Output Selection

The audio output on the header connector J32 can be selected to be
stereo line out or stereo headphone out (amplified signal). The jumper
JP7 selects the audio output signals.

Table 1-4 Audio Output Mode Selection

Audio Output

Mode Selection

Headphone Line Out

JP7 1-3, 2-4 3-5, 4-6*

* Manufacturer's Settings.

Backlight Logic Voltage Selection

The LVDS power connector J2 can supply either 5Vcc or 3.3Vcc for
the logic circuits in the backlight inverter. The jumper JP1 selects the
voltage.

Table 1-5 Backlight Logic Voltage Select

Backlight

Logic

5Vcc 3.3Vcc

Voltage

JP1 1-2 2-3*

* Manufacturer's Settings.

Inverter Voltage Selection

The LVDS power connector J2 can supply either 5Vcc or 12Vcc for the
backlight inverter. The jumper JP2 selects the voltage.

Table 1-6 Inverter Voltage Select

Inverter
Voltage

12Vcc 5Vcc

JP2 1-2 2-3*

* Manufacturer's Settings.

6

Chapter 1: Pre-Configuration

p

p

Step 2 SDRAM, CPU, and Cables

Installation

Depending upon how your Captor M is configured you may need to
install the following:

• SDRAM (DIMMs)

• CPU

Captor M Memory Configuration

The Captor M offers 2 DIMM memory sockets (Locations J6 and J12 –
Figure 1-2). They can be configured with 2.5V unbuffered SDRAM
DDR modules. It is very important that the quality of the DIMMs is
good. Unreliable operation of the system may result if poor quality
DIMMs are used. Always purchase your memory from a reliable
source. Please, refer to chapter 3 for memory details.

CPU Installation

The Captor M currently supports the following CPUs:

• Full series of Intel Pentium M, Intel Pentium M on 90nm
process with 2MB L2 cache and Celeron M 400MHz PSB
processors featuring next-generation Intel SpeedStep® technology
on the µFC-PGA 478 package.

1. Improper installation of the CPU may cause



Locate the CPU socket on your Captor M system board (µFC-PGA 478
Socket – Location U21 – Figure 1-2). To install the processor, rotate
the screw of the ZIF socket counter clock-wise until the open position
and gently insert the CPU. The CPU will fit only in the right alignment.
Make sure the CPU is inserted all the way. Rotate the screw clock-wise

ermanent damage to both the system board and the

CPU. -- Void of warranty

2. Always handle the CPU by the edges, never touch the
ins.

3. Always use a heat-sink and a CPU fan.

7

Captor M – Installation Guide

until the closed position. Install the CPU fan. Make sure it is locked
and connected to J27 (see pin-out in Appendix A).

The continued push of technology to increase performance levels
(higher operating speeds) and packaging density (more transistors) is
aggravating the thermal management of the CPU. As operating
frequencies increase and packaging sizes decreases, the power density
increases and the thermal cooling solution space and airflow become
more constrained. The result is an increased importance on system
design to ensure that thermal design requirements are met for the CPU.

The objective of thermal management is to ensure that the temperature
of the processor is maintained within functional limits. The functional
temperature limit is the range within which the electrical circuits can be
expected to meet their specified performance requirements. Operation
outside the functional limit can degrade system performance, cause
logic errors or cause component and/or system damage. Temperatures
exceeding the maximum operating limits may result in irreversible
changes in the operating characteristics of the component.

If the Captor M industrial embedded motherboard is acquired without
the CPU and the thermal solution, extremely care must be taken to
avoid improper thermal management. All Intel thermal solution
specifications, design guidelines and suggestions to the CPU being
used must be followed. The Captor M warranty is void if the thermal
management does not comply with Intel requirements.

Designing for thermal performance

In designing for thermal performance, the goal is to keep the processor
within the operational thermal specifications. The inability to do so will
shorten the life of the processor.

Fan Heatsink

An active fan heatsink can be employed as a mechanism for cooling the
Intel processors. This is the acceptable solution for most chassis.
Adequate clearance must be provided around the fan heatsink to ensure
unimpeded air flow for proper cooling.

Airflow management

It is important to manage the velocity, quantity and direction of air that
flows within the system (and how it flows) to maximize the volume of
air that flows over the processor.

8

Chapter 1: Pre-Configuration

Thermal interface management

To optimize the heatsink design for the Pentium M processor, it is
important to understand the impact of factors related to the interface
between the processor and the heatsink base. Specifically, the bond line
thickness, interface material area, and interface material thermal
conductivity should be managed to realize the most effective thermal
solution.
Once used, the thermal interface should be discarded and a new one
installed. Never assemble the heatsink with a previously used thermal
interface.

This completes the installation of the CPU. Now is it a good time to
double check both the CPU and DIMM installation to make sure that
these devices have been properly installed.

Installing Cables

Power and Control Panel Cables

The Captor M gets power from the PICMG edge connectors S1 and S2
(Figure 1-2).

Installing Peripheral Cables

Now it is a good time to install the internal peripherals such as floppy
and hard disk drives. Do not connect the power cable to these
peripherals, as it is easier to attach the bulky ribbon cables before the
smaller power connectors. If you are installing more than one IDE
drive double check your master/slave jumpers on the drives. Review
the information supplied with your drive for more information on this
subject.

Most modern HDDs are UDMA-5 capable. To make use of the Ultra
DMA-5 capabilities, 80-conductor cables must be used. The BIOS and
the HDD will check for the existence of the 80-conductor cable. The
long leg of the cable must be connected to the board; otherwise it won’t
work as an 80-conductor cable. If connecting another peripheral that is
not UDMA-5 capable (most optical devices are not), the whole IDE
channel will be downgraded to UDMA-2. In that case, it is
recommended to use a different IDE channel for the non-UDMA-5
capable peripherals.

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Captor M – Installation Guide

Connect the floppy cable (not included) to the system board. Finally,
connect the IDE cable (not included) to the system. If using a Solid
State Device, connect it to the mini-ATA connector. Connect all
interface cables to their headers. Then connect remaining ends of the
ribbon cable to the appropriate peripherals.

This concludes the hardware installation of your Captor M system.
Now it is a good time to re-check all of the cable connections to make
sure they are correct.

10

Chapter 1: Pre-Configuration

Figure 1-2 Location of Components and Connectors

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Captor M – Installation Guide

Index of Connectors

Please refer to Appendix A for pin-out descriptions.

Table 1-7 Connectors description

Connector Description

J1
J2
J3
J4
J5
J6
J7
J8

J9
J10
J11
J12
J13
J14
J15
J16
J17
J18
J19
J20
J21
J22
J23

J24

J25
J26
J27
J28
J29

DDR DIMM Socket 1

Alt. Secondary IDE – 44-pin

DDR DIMM Socket 0

Floppy Disk Drive Connector

Front Panel Header

Ethernet 1 (Optional 10/100/1000) RJ45

USB Header (Ports 0 & 1)
USB Header (Ports 4 & 5)
USB Header (Ports 2 & 3)

Ethernet 2 (Optional 10/100 or 10/100/1000)

Keyboard/Mouse Combined PS/2

Audio – CD In Header

Audio – Line In Header

LVDS

LVDS Backlight

COM3
COM1
COM5

Rear Chassis Fan

COM4
COM2
COM6

Secondary IDE

Primary IDE

ITP

LPT - Parallel

ATX PS Control

RJ45

JTAG

CPU Fan

12

Chapter 1: Pre-Configuration

Connector Description

J30
J31
J32

J33

J34

S1

S2
U18
U21

User's Notes:

Buzzer – Alt. Speaker Header

Audio – Line Out/Microphone In Header

External RTC/CMOS Battery – Close to Battery

Mini-PCI Slot – Back side of the board

VGA DB15

Holder

PICMIG ISA Edge

PICMIG PCI Edge

BIOS Socket

CPU Socket

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Captor M – Installation Guide

User's Notes:

14

Chapter 2: BIOS Configuration

Chapter 2 AMIBIOS8

Setup

Your Captor M features American Megatrends AMIBIOS8. The system
configuration parameters are set via the BIOS setup. Since the BIOS
Setup resides in the ROM BIOS, it is available each time the computer
is turned on.

American Megatrends’s AMIBIOS8 brand BIOS (Basic Input/Output
System) pre-boot firmware is the industry’s standard product used by
most designers of X86 computer equipment in the world today. Its
superior combination of configurability and functionality enables it to
satisfy the most demanding ROM BIOS needs for x86 designers. Its
modular architecture and high degree of configurability make it the
most flexible BIOS in the world.

When your platform is powered on, AMIBIOS8 tests and initializes the
hardware and programs the chipset and other peripheral components.
During this time, Power On Self Test (POST) progress codes are
written by the system BIOS to I/O port 80h, allowing the user to
monitor the progress with a special monitor. Appendix B lists the
POST codes and their meanings.
During early POST, no video is available to display error messages
should a critical error be encountered; therefore, POST uses beeps on
the speaker to indicate the failure of a critical system component during
this time. Consult Appendix B for a list of Beep codes used by the
BIOS.

Starting BIOS Setup

AMIBIOS has been integrated into many motherboards for over a
decade. In the past, people often referred to the AMIBIOS setup menu
as BIOS, BIOS setup, or CMOS setup.
American Megatrends refers to this setup as ezPORT. Specifically, it is
the name of theAMIBIOS8 BIOS setup utility. This chapter describes
the basic navigation of the ezPORT setup screens.

To enter the ezPORT setup screens, follow the steps below:
1 Power on the motherboard
2 Press the <Delete> key on your keyboard when you see the following
text prompt:

Press DEL to run Setup

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Captor M – Installation Guide

3 After you press the <Delete> key, the ezPORT main BIOS setup
menu displays. You can access the other setup screens from the main
BIOS setup menu, such as the Chipset and PCI/PnP menus.

BIOS Setup Main Menu

The ezPORT main BIOS setup menu is the first screen that you can
navigate. Each main BIOS setup menu option is described in the
Chapter 2.
The Main BIOS setup menu screen has two main frames. The left
frame displays all the options that can be configured. “Grayed-out”
options cannot be configured. Options in blue can be.
The right frame displays the key legend. Above the key legend is an
area reserved for a text message. When an option is selected in the left
frame, it is highlighted in white. Often a text message will accompany
it.
The ezPORT BIOS setup/utility uses a key-based navigation system
called hot keys. Most of the ezPORT BIOS setup utility hot keys can be
used at any time during the setup navigation process. These keys
include <F1>, <F10>, <Enter>, <ESC>, <Arrow> keys, and so on.

The <F8> key on your keyboard is the Fail-Safe key. It is not displayed
on the ezPORT key legend by default. To set the Fail-Safe settings of
the BIOS, press the <F8> key on your keyboard. It is located on the
upper row of a standard 101 keyboard. The Fail-Safe settings allow the
motherboard to boot up with the least amount of options set. This can
lessen the probability of conflicting settings.

16

Chapter 2:BIOS Configuration

17

Captor M – Installation Guide

Main Setup

When you first enter the ezPORT Setup Utility, you will enter the Main
setup screen. You can always return to the Main setup screen by
selecting the Main tab. There are two Main Setup options.

System Time/System Date

Use this option to change the system time and date. Highlight System
Time or System Date using the <Arrow> keys. Enter new values

through the keyboard. Press the <Tab> key or the <Arrow> keys to
move between fields. The date must be entered in MM/DD/YY format.
The time is entered in HH:MM:SS format.
Note: The time is in 24-hour format. For example, 5:30 A.M. appears
as 05:30:00, and 5:30 P.M. as 17:30:00.

Advanced BIOS Setup

Select the Advanced tab from the ezPORT setup screen to enter the
Advanced BIOS Setup screen. You can select any of the items in the
left frame of the screen, such as SuperIO Configuration, to go to the
sub menu for that item. You can display an Advanced BIOS Setup
option by highlighting it using the <Arrow> keys. All Advanced BIOS
Setup options are described in this section.

CPU CONFIGURATION SCREEN

Information about the CPU.

Intel SpeedStep Technology

You can select the behavior of the SpeedStep feature prior to the OS
boot. The Optimal and Fail-Safe default setting is Auto.

Max Performance.
Battery Optimized.
Reversed.
Auto.
Disabled.

IDE CONFIGURATION SCREEN

IDE Configuration Settings

You can use this screen to select options for the IDE Configuration
Settings. Use the up and down <Arrow> keys to select an item. Use the
<Plus> and <Minus> keys to change the value of the selected option. A
description of the selected item appears on the right side of the screen.

18

Chapter 2:BIOS Configuration

Onboard PCI IDE Controller

This item specifies the IDE channels used by the onboard PCI IDE
controller. The settings are Disabled, Primary, Secondary, or Both. The
Optimal and Fail-Safe default setting is Both.

Disabled Set this value to prevent the computer system from using
the onboard IDE controller.
Primary Set this value to allow the computer system to detect only
the Primary IDE channel. This includes both the Primary Master and
the Primary Slave.
Secondary Set this value to allow the computer system to detect only
the Secondary IDE channel. This includes both the Secondary Master
and the Secondary Slave.
Both Set this value to allow the computer system to detect the
Primary and Secondary IDE channels.
This includes both the Primary Master, Primary Slave, Secondary
Master, and Secondary Slave. This is the default setting.

Primary IDE Master, Primary IDE Slave, Secondary IDE Master,
Secondary IDE Slave

Select one of the hard disk drives to configure it. Press <Enter> to
access the sub menu. The options on the sub menu are described in the
following sections.

Hard disk drive Write Protect

Set this option to protect the hard disk drive from being overwritten.
The Optimal and Fail-Safe default setting is Disabled.

Disabled Set this value to allow the hard disk drive to be used
normally. Read, write, and erase functions can be performed to the
hard disk drive. This is the default setting.
Enabled Set this value to prevent the hard disk drive from being
erased.

IDE Detect Time Out (Seconds)

Set this option to stop the AMIBIOS from searching for IDE devices
within the specified number of seconds. Basically, this allows you to
fine-tune the settings to allow for faster boot times. Adjust this setting
until a suitable timing that can detect all IDE disk drives attached is
found.
The Optimal and Fail-Safe default setting is 35.

0 This value is the best setting to use if the onboard IDE controllers
are set to a specific IDE disk drive in the AMIBIOS.
5 Set this value to stop the AMIBIOS from searching the IDE bus for
IDE disk drives in five seconds. A large majority of ultra ATA hard
disk drives can be detected well within five seconds.
10 Set this value to stop the AMIBIOS from searching the IDE bus
for IDE disk drives in 10 seconds.

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Captor M – Installation Guide

15 Set this value to stop the AMIBIOS from searching the IDE bus
for IDE disk drives in 15 seconds.
20 Set this value to stop the AMIBIOS from searching the IDE bus
for IDE disk drives in 20 seconds.
25 Set this value to stop the AMIBIOS from searching the IDE bus
for IDE disk drives in 25 seconds.
30 Set this value to stop the AMIBIOS from searching the IDE bus
for IDE disk drives in 30 seconds.
35 35 is the default value. It is the recommended setting when all IDE
connectors are set to AUTO in the AMIBIOS setting.

Note: Different IDE disk drives take longer for the BIOS to locate than
others do.

ATA (PI) 80 pin Cable Detection

Set this option to select the method used to detect the ATA (PI) 80 pin
cable. The Optimal and Fail-Safe setting is Host & Device.

Host & Device Set this value to use both the motherboard onboard
IDE controller and IDE disk drive to detect the type of IDE cable
used. This is the default setting.
Host Set this value to use motherboard onboard IDE controller to
detect the type of IDE cable used.
Device Set this value to use IDE disk drive to detect the type of IDE
cable used.

The use of an 80-conductor ATA cable is mandatory for running Ultra
ATA/66 and Ultra ATA/100 IDE hard disk drives. The standard 40­conductor ATA cable cannot handle the higher speeds.
80-conductor ATA cable is plug compatible with the standard 40­conductor ATA cable. Because of this, the system must determine the
presence of the correct cable. This detection is achieved by having a
break in one of the lines on the 80-conductor ATA cable that is
normally an unbroken connection in the standard 40-conductor ATA
cable. It is this break that is used to make this determination. The
AMIBIOS can instruct the drive to run at the correct speed for the cable
type detected.

PRIMARY AND SECONDARY IDE MASTER AND SLAVE SUB
MENU

Primary and Secondary IDE Master and Slave Settings

From the IDE Configuration screen, press <Enter> to access the sub
menu for the primary and secondary IDE master and slave drives. Use
this screen to select options for the Primary and Secondary IDE drives.
Use the up and down <Arrow> keys to select an item. Use the <Plus>
and <Minus> keys to change the value of the selected option. The
settings are described on the following pages.

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Chapter 2:BIOS Configuration

Drive Parameters

The “grayed-out” items in the left frame are the IDE disk drive
parameters taken from the firmware of the IDE disk drive selected. The
drive parameters listed are as follows:

Device Type of device, such as Hard disk drive.
Vendor Manufacturer of the device.
Size The size of the device.
LBA Mode LBA (Logical Block Addressing) is a method of

addressing data on a disk drive. Your AMIBIOS is already equipped
with 48-bit LBA mode addressing.
Block Mode Block mode boosts IDE drive performance by
increasing the amount of data transferred. Only 512 bytes of data can
be transferred per interrupt if block mode is not used. Block mode
allows transfers of up to 64 KB per interrupt.
PIO Mode IDE PIO mode programs timing cycles between the IDE
drive and the programmable IDE controller. As the PIO mode
increases, the cycle time decreases.
Async DMA This indicates the highest Asynchronous DMA Mode
that is supported.
Ultra DMA This indicates the highest Synchronous DMA Mode that
is supported.
S.M.A.R.T. Self-Monitoring Analysis and Reporting Technology
protocol used by IDE drives of some manufacturers to predict drive
failures.

Type

This option sets the type of device that the AMIBIOS attempts to boot
from after the Power-On Self-Test (POST) has completed. The Optimal
and Fail-Safe default setting is Auto.

Not Installed Set this value to prevent the BIOS from searching for
an IDE disk drive on the specified channel.
Auto Set this value to allow the BIOS auto detect the IDE disk drive
type attached to the specified channel. This setting should be used if
an IDE hard disk drive is attached to the specified channel. This is the
default setting.
CDROM This option specifies that an IDE CD-ROM drive is
attached to the specified IDE channel. The BIOS will not attempt to
search for other types of IDE disk drives on the specified channel.
ARMD This option specifies an ATAPI Removable Media Device.
This includes, but is not limited to:

• ZIP

• LS-120

• MO

LBA/Large Mode

LBA (Logical Block Addressing) is a method of addressing data on a
disk drive. The Optimal and Fail-Safe default setting is Auto.

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Captor M – Installation Guide

Note: Your AMIBIOS is equipped with 48-bit LBA mode addressing
for drive capacities over 137 GB.

Disabled Set this value to prevent the BIOS from using Large Block
Addressing mode control on the specified channel.
Auto Set this value to allow the BIOS to auto detect the Large Block
Addressing mode control on the specified channel. This is the default
setting.

Block (Multi-Sector Transfer)

This option sets the block mode multi sector transfers option. The
Optimal and Fail-Safe default setting is Auto.

Disabled Set this value to prevent the BIOS from using Multi-Sector
Transfer on the specified channel. The data to and from the device
will occur one sector at a time.
Auto Set this value to allow the BIOS to auto detect device support
for Multi-Sector Transfers on the specified channel. If supported, Set
this value to allow the BIOS to auto detect the number of sectors per
block for transfer from the hard disk drive to the memory. The data
transfer to and from the device will occur multiple sectors at a time.
This is the default setting.

PIO Mode

IDE PIO (Programmable I/O) mode programs timing cycles between
the IDE drive and the programmable IDE controller. As the PIO mode
increases, the cycle time decreases. The Optimal and Fail-Safe default
setting is Auto.

Auto Set this value to allow the BIOS to auto detect the PIO mode.
Use this value if the IDE disk drive support cannot be determined.
This is the default setting.
0 Set this value to allow the BIOS to use PIO mode 0. It has a data
transfer rate of 3.3 MBs.
1 Set this value to allow the BIOS to use PIO mode 1. It has a data
transfer rate of 5.2 MBs.
2 Set this value to allow the BIOS to use PIO mode 2. It has a data
transfer rate of 8.3 MBs.
3 Set this value to allow the BIOS to use PIO mode 3. It has a data
transfer rate of 11.1 MBs.
4 Set this value to allow the BIOS to use PIO mode 4. It has a data
transfer rate of 16.6 MBs. This setting generally works with all hard
disk drives manufactured after 1999. For other disk drive, such as
IDE CD-ROM drives, check the specifications of the drive.

DMA Mode

This setting allows you to adjust the DMA mode options. The Optimal
and Fail-Safe default setting is Auto.

Auto Set this value to allow the BIOS to auto detect the DMA mode.
Use this value if the IDE disk drive support cannot be determined.
This is the default setting.

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Chapter 2:BIOS Configuration

SWDMA0 Set this value to allow the BIOS to use Single Word
DMA mode 0. It has a data transfer rate of 2.1 MBs.
SWDMA1 Set this value to allow the BIOS to use Single Word
DMA mode 1. It has a data transfer rate of 4.2 MBs.
SWDMA2 Set this value to allow the BIOS to use Single Word
DMA mode 2. It has a data transfer rate of 8.3 MBs.
MWDMA0 Set this value to allow the BIOS to use Multi Word
DMA mode 0. It has a data transfer rate of 4.2 MBs.
MWDMA1 Set this value to allow the BIOS to use Multi Word
DMA mode 1. It has a data transfer rate of 13.3 MBs.
MWDMA2 Set this value to allow the BIOS to use Multi Word
DMA mode 2. It has a data transfer rate of 16.6 MBs.
UDMA0 Set this value to allow the BIOS to use Ultra DMA mode 0.
It has a data transfer rate of 16.6 MBs. It has the same transfer rate as
PIO mode 4 and Multi Word DMA mode 2.
UDMA1 Set this value to allow the BIOS to use Ultra DMA mode 1.
It has a data transfer rate of 25 MBs.
UDMA2 Set this value to allow the BIOS to use Ultra DMA mode 2.
It has a data transfer rate of 33.3 MBs.
UDMA3 Set this value to allow the BIOS to use Ultra DMA mode 3.
It has a data transfer rate of 44.4 MBs. To use this mode, it is
required that an 80-conductor ATA cable is used.
UDMA4 Set this value to allow the BIOS to use Ultra DMA mode 4.
It has a data transfer rate of 66.6 MBs. To use this mode, it is
required that an 80-conductor ATA cable is used.
UDMA5 Set this value to allow the BIOS to use Ultra DMA mode 5.
It has a data transfer rate of 99.9 MBs. To use this mode, it is
required that an 80-conductor ATA cable is used.

S.M.A.R.T. for Hard disk drives

Self-Monitoring Analysis and Reporting Technology (SMART) feature
can help predict impending drive failures. The Optimal and Fail-Safe
default setting is Auto.

Auto Set this value to allow the BIOS to auto detect hard disk drive
support. Use this setting if the IDE disk drive support cannot be
determined. This is the default setting.
Disabled Set this value to prevent the BIOS from using the SMART
feature.
Enabled Set this value to allow the BIOS to use the SMART feature
on support hard disk drives.

32Bit Data Transfer

This option sets the 32-bit data transfer option. The Optimal and Fail­Safe default setting is Enabled.

Disabled Set this value to prevent the BIOS from using 32-bit data
transfers.
Enabled Set this value to allow the BIOS to use 32-bit data transfers
on support hard disk drives. This is the default setting.

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Captor M – Installation Guide

ARMD Emulation Type

ATAPI Removable Media Device (ARMD) is a device that uses
removable media, such as the LS120, MO (Magneto-Optical), or
Iomega Zip drives. If you want to boot up from media on an ARMD, it
is required that you emulate boot up from a floppy or hard disk drive.
This is especially necessary when trying to boot to DOS. You can
select the type of emulation used if you are booting from such a device.
The Optimal and Fail-Safe default setting is Auto.

Auto Set this value to allow the BIOS to automatically set the
emulation used by ARMD. This is the default setting.
Floppy Set this value for ARMD to emulate a floppy drive during
boot up.
Hard disk drive Set this value for ARMD to emulate a hard disk
drive during boot up.

FLOPPY CONFIGURATION SCREEN

Floppy Configuration Settings

You can use this screen to specify options for the Floppy Configuration
Settings. Use the up and down <Arrow> keys to select an item. Use the
<Plus> and <Minus> keys to change the value of the selected option.

Floppy Drive A: and B:

Move the cursor to these fields via up and down <arrow> keys. Select
the floppy type. The Optimal setting for floppy drive A: is 1.44 MB
3½”. The Fail-Safe setting for floppy drive A: is 1.44 MB 3½”. The
Optimal setting for floppy drive B: is Disabled. The Fail- Safe setting
for floppy drive B: is Disabled.

Disabled Set this value to prevent the use of the selected floppy disk
drive channel. This option should be set if no floppy disk drive is
installed on the specified channel. This is the default setting for
Floppy Drive B.
360 KB 5 ¼ ” Set this value if the floppy disk drive attached to the
corresponding channel is a 360 KB 5¼ “ floppy disk drive.

1.2 MB 5 ¼ ” Set this value if the floppy disk drive attached to the
corresponding channel is a 1.2 MB 5¼ “ floppy disk drive.
720 KB 3 ½ ” Set this value if the floppy disk drive attached to the
corresponding channel is a 720 KB 3½ “ floppy disk drive.

1.44 MB 3 ½ ” Set this value if the floppy disk drive attached to the
corresponding channel is a 1.44 MB 3½ “ floppy disk drive. This is
the default setting for Floppy Drive A.

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Chapter 2:BIOS Configuration

SUPER IO CONFIGURATION SCREEN

SuperIO Configuration Screen

You can use this screen to select options for the Super I/O settings. Use
the up and down <Arrow> keys to select an item. Use the <Plus> and
<Minus> keys to change the value of the selected option.

OnBoard Floppy Controller

Set this option to Enabled to enable the floppy drive controller on the
motherboard. The settings are Enabled and Disabled. The default
setting is Enabled.

Serial Port1 Address

This option specifies the base I/O port address and Interrupt Request
address of serial port 1. The Optimal setting is 3F8/IRQ4. The Fail-Safe
default setting is Disabled.

Disabled Set this value to prevent the serial port from accessing any
system resources. When this option is set to Disabled, the serial port
physically becomes unavailable.
3F8/IRQ4 Set this value to allow the serial port to use 3F8 as its I/O
port address and IRQ 4 for the interrupt address. This is the default
setting. The majority of serial port 1 or COM1 ports on computer
systems use IRQ4 and I/O Port 3F8 as the standard setting. The most
common serial device connected to this port is a mouse. If the system
will not use a serial device, it is best to set this port to Disabled.
2F8/IRQ3 Set this value to allow the serial port to use 2F8 as its I/O
port address and IRQ 3 for the interrupt address. If the system will
not use a serial device, it is best to set this port to Disabled.
3E8/IRQ4 Set this value to allow the serial port to use 3E8 as its I/O
port address and IRQ 4 for the interrupt address. If the system will
not use a serial device, it is best to set this port to Disabled.
2E8/IRQ3 Set this value to allow the serial port to use 2E8 as its I/O
port address and IRQ 3 for the interrupt address. If the system will
not use a serial device, it is best to set this port to Disabled.

Serial Port2 Address

This option specifies the base I/O port address and Interrupt Request
address of serial port 2. The Optimal setting is 2F8/IRQ3. The Fail-Safe
setting is Disabled.

Disabled Set this value to prevent the serial port from accessing any
system resources. When this option is set to Disabled, the serial port
physically becomes unavailable.
3F8/IRQ4 Set this value to allow the serial port to use 3F8 as its I/O
port address and IRQ 4 for the interrupt address. If the system will
not use a serial device, it is best to set this port to Disabled.
2F8/IRQ3 Set this value to allow the serial port to use 2F8 as its I/O
port address and IRQ 3 for the interrupt address. This is the default

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Captor M – Installation Guide

setting. The majority of serial port 2 or COM2 ports on computer
systems use IRQ3 and I/O Port 2F8 as the standard setting. The most
common serial device connected to this port is an external modem. If
the system will not use an external modem, set this port to Disabled.
Note: Most internal modems require the use of the second COM port
and use 3F8 as its I/O port address and IRQ 4 for its interrupt
address. This requires that the Serial Port2 Address be set to Disabled
or another base I/O port address and Interrupt Request address.
3E8/IRQ4 Set this value to allow the serial port to use 3E8 as its I/O
port address and IRQ 4 for the interrupt address. If the system will
not use a serial device, it is best to set this port to Disabled.
2E8/IRQ3 Set this value to allow the serial port to use 2E8 as its I/O
port address and IRQ 3 for the interrupt address. If the system will
not use a serial device, it is best to set this port to Disabled.

Serial Port2 Mode

This option allows installation of an Infra-red device by the Serial Port.
The settings are Normal (default), IRDA and ASK IR.

Infra-Red Transmission Mode

The settings are Full Duplex (default) or Half Duplex.

Receiver/Transmitter Polarity

Sets polarity for IR modes.

Parallel Port Address

This option specifies the I/O address used by the parallel port. The
Optimal setting is 378. The Fail-Safe setting is Disabled.

Disabled Set this value to prevent the parallel port from accessing
any system resources. When the value of this option is set to
Disabled, the printer port becomes unavailable.
378 Set this value to allow the parallel port to use 378 as its I/O port
address. This is the default setting. The majority of parallel ports on
computer systems use IRQ7 and I/O Port 378H as the standard
setting.
278 Set this value to allow the parallel port to use 278 as its I/O port
address.
3BC Set this value to allow the parallel port to use 3BC as its I/O
port address.

Parallel Port Mode

This option specifies the parallel port mode. The Optimal setting is
Normal. The Fail- Safe setting is Disabled.

Normal Set this value to allow the standard parallel port mode to be
used. This is the default setting.
Bi-Directional Set this value to allow data to be sent to and received
from the parallel port.

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Chapter 2:BIOS Configuration

EPP The parallel port can be used with devices that adhere to the
Enhanced Parallel Port (EPP) specification. EPP uses the existing
parallel port signals to provide asymmetric bi-directional data transfer
driven by the host device.
ECP The parallel port can be used with devices that adhere to the
Extended Capabilities Port (ECP) specification. ECP uses the DMA
protocol to achieve data transfer rates up to 2.5 Megabits per second.
ECP provides symmetric bi-directional communication.

Parallel Port IRQ

This option specifies the IRQ used by the parallel port. The Optimal
and Fail-Safe default setting is 7.

5 Set this value to allow the serial port to use Interrupt 5.
7 Set this value to allow the serial port to use Interrupt 7. This is the

default setting. The majority of parallel ports on computer systems
use IRQ7 and I/O Port 378h as the standard setting.

Serial Port3 Address High Nibble

This option specifies the base I/O port address high nibble of the serial
port 3. The Serial port 3 can be located in any of the 96 I/O locations
between 100h and 3F8h aligned at 8-byte boundaries. The Optimal and
Fail-Safe default settings are Disabled.

Disabled Set this value to prevent the serial port from accessing any
system resources. When this option is set to Disabled, the serial port
physically becomes unavailable.

1h.
2h.
3h.

Serial Port3 Address Mid Nibble

This option specifies the base I/O port address middle nibble of the
serial port 3. The high nibble must be valid for this option to be
available.

0h, 1h, 2h, 3h, 4h, 5h, 6h, 7h, 8h, 9h, 0Ah, 0Bh, 0Ch, 0Dh,
0Eh, 0Fh.

Serial Port3 Address Low Nibble

This option specifies the base I/O port address low nibble of the serial
port 3. The high nibble must be valid for this option to be available.

0h.
8h

Serial Port3 IRQ

This option specifies the IRQ for the serial port 3. The high nibble must
be valid for this option to be available. Shared IRQs are not supported
by the extra serial ports 3-6.

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Captor M – Installation Guide

IRQ_1…....IRQ_15.

Serial Port4 Address High Nibble

This option specifies the base I/O port address high nibble of the serial
port 4. The Serial port 4 can be located in any of the 96 I/O locations
between 100h and 3F8h aligned at 8-byte boundaries. The Optimal and
Fail-Safe default settings are Disabled.

Disabled Set this value to prevent the serial port from accessing any
system resources. When this option is set to Disabled, the serial port
physically becomes unavailable.

1h.
2h.
3h.

Serial Port4 Address Mid Nibble

This option specifies the base I/O port address middle nibble of the
serial port 4. The high nibble must be valid for this option to be
available.

0h, 1h, 2h, 3h, 4h, 5h, 6h, 7h, 8h, 9h, 0Ah, 0Bh, 0Ch, 0Dh,
0Eh, 0Fh.

Serial Port4 Address Low Nibble

This option specifies the base I/O port address low nibble of the serial
port 4. The high nibble must be valid for this option to be available.

0h.
8h

Serial Port4 IRQ

This option specifies the IRQ for the serial port 4. The high nibble must
be valid for this option to be available. Shared IRQs are not supported
by the extra serial ports 3-6.

IRQ_1…....IRQ_15.

Serial Port5 Address High Nibble

This option specifies the base I/O port address high nibble of the serial
port 5. The Serial port 5 can be located in any of the 96 I/O locations
between 100h and 3F8h aligned at 8-byte boundaries. The Optimal and
Fail-Safe default settings are Disabled.

Disabled Set this value to prevent the serial port from accessing any
system resources. When this option is set to Disabled, the serial port
physically becomes unavailable.

1h.
2h.
3h.

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Chapter 2:BIOS Configuration

Serial Port5 Address Mid Nibble

This option specifies the base I/O port address middle nibble of the
serial port 5. The high nibble must be valid for this option to be
available.

0h, 1h, 2h, 3h, 4h, 5h, 6h, 7h, 8h, 9h, 0Ah, 0Bh, 0Ch, 0Dh,
0Eh, 0Fh.

Serial Port5 Address Low Nibble

This option specifies the base I/O port address low nibble of the serial
port 5. The high nibble must be valid for this option to be available.

0h.
8h

Serial Port5 IRQ

This option specifies the IRQ for the serial port 5. The high nibble must
be valid for this option to be available. Shared IRQs are not supported
by the extra serial ports 3-6.

IRQ_1…....IRQ_15.

Serial Port6 Address High Nibble

This option specifies the base I/O port address high nibble of the serial
port 6. The Serial port 6 can be located in any of the 96 I/O locations
between 100h and 3F8h aligned at 8-byte boundaries. The Optimal and
Fail-Safe default settings are Disabled.

Disabled Set this value to prevent the serial port from accessing any
system resources. When this option is set to Disabled, the serial port
physically becomes unavailable.

1h.
2h.
3h.

Serial Port6 Address Mid Nibble

This option specifies the base I/O port address middle nibble of the
serial port 6. The high nibble must be valid for this option to be
available.

0h, 1h, 2h, 3h, 4h, 5h, 6h, 7h, 8h, 9h, 0Ah, 0Bh, 0Ch, 0Dh,
0Eh, 0Fh.

Serial Port6 Address Low Nibble

This option specifies the base I/O port address low nibble of the serial
port 6. The high nibble must be valid for this option to be available.

0h.
8h

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Captor M – Installation Guide

Serial Port6 IRQ

This option specifies the IRQ for the serial port 6. The high nibble must
be valid for this option to be available. Shared IRQs are not supported
by the extra serial ports 3-6.

IRQ_1…....IRQ_15.

ACPI CONFIGURATION SCREEN

ACPI Configuration Screen

You can use this screen to select options for the ACPI settings. Use the
up and down <Arrow> keys to select an item. Use the <Plus> and
<Minus> keys to change the value of the selected option.

ACPI Aware O/S

Set this value to allow the system to utilize the Intel ACPI (Advanced
Configuration and Power Interface) specification. The Optimal and
Fail-Safe default setting is Yes.

No This setting should be set if the operating system in use does not
comply with the ACPI (Advanced Configuration and Power
Interface) specification. DOS® , Windows 3.x® , and Windows NT®
are examples of non-ACPI aware operating systems.
Yes This setting should be set if the operating system complies with
the ACPI (Advanced Configuration and Power Interface)
specification. This is the default setting. Windows 95® , Windows
98® and Windows 2000® are examples of ACPI aware operating
systems.

Advanced ACPI Configuration

You can use this screen to select options for the ACPI Advanced
Configuration Settings. Use the up and down <Arrow> keys to select
an item. Use the <Plus> and <Minus> keys to change the value of the
selected option. A description of the selected item appears on the right
side of the screen.

ACPI 2.0

Set this value to allow or prevent the system to be complaint with the
ACPI 2.0 specification.

No This setting prevents the BIOS from supporting the ACPI 2.0
specification. This is the default setting.
Yes This setting allows the BIOS to support the ACPI 2.0
specification.

ACPI APIC support

Include ACPI APIC pointer to RSDT pointer list.

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Chapter 2:BIOS Configuration

AMI OEM Table

Set this value to allow the ACPI BIOS to add a pointer to an OEMB
table in the Root System Description Table (RSDT) table.

Disabled This option disables adding an OEMB table.
Enabled This option enables adding an OEMB table. This is the

default setting.

Note: OEMB table is used to pass POST data to the AML code during
ACPI O/S operations.

RSDT

RSDT is the main ACPI table. It has no fixed place in memory. During
the boot up process, the BIOS locates a pointer to the table during the
memory scan. A Root System Descriptor Pointer (RSDP) is located in
low memory space of the system. It provides the physical address of the
RSDT. The RSDT itself is identified in memory because it starts with
the signature "RSDT." Following the signature is an array of pointers
that tell the operating system the location of other description tables
that provide it with the information it needs about the standards defined
on the current system and individual devices.

AML

ACPI Machine Language (AML) is a binary code format that the
operating system's ACPI AML interpreter parses to discover the
machine's properties. On boot up the BIOS startup code copies it into
system memory, where it can be interpreted by the operating system’s
ACPI AML interpreter.

Headless Mode

This option is used to update the ACPI FACP table to indicate headless
operations.

Disabled This option disables updating the ACPI FACP table to
indicate headless operation. This is the default setting.
Enabled This option enables updating the ACPI FACP table to
indicate headless operation.

EVENT LOG CONFIGURATION SCREEN

EVENT LOG Configuration Screen

You can use this screen to select options for the Event Log settings.
Use the up and down <Arrow> keys to select an item. Use the <Plus>
and <Minus> keys to change the value of the selected option.

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Captor M – Installation Guide

PCI Error Logging

Enables or disables PCI Error logging. The Optimal and Fail-Safe
default setting is Disabled.

Enabled.
Disabled.

HARDWARE HEALTH CONFIGURATION SCREEN

Hardware Health Configuration Screen

Shows information about temperatures and voltages. The function can
be enabled or disabled.

USB CONFIGURATION SCREEN

USB Configuration Screen

You can use this screen to select options for the USB Configuration.
Use the up and down <Arrow> keys to select an item. Use the <Plus>
and <Minus> keys to change the value of the selected option.

Legacy USB Support

Legacy USB Support refers to the USB mouse and USB keyboard
support. Normally if this option is not enabled, any attached USB
mouse or USB keyboard will not become available until a USB
compatible operating system is fully booted with all USB drivers
loaded. When this option is enabled, any attached USB mouse or USB
keyboard can control the system even when there is no USB drivers
loaded on the system. Set this value to enable or disable the Legacy
USB Support. The Optimal and Fail-Safe default setting is Auto.

Disabled Set this value to prevent the use of any USB device in DOS
or during system boot.
Enabled Set this value to allow the use of USB devices during boot
and while using DOS.
Auto This option auto detects USB Keyboards or Mice and if found,
allows them to be utilized during boot and while using DOS.

USB 2.0 Controller Mode

Set this option to HiSpeed for 480Mbps or FullSpeed for 12Mbps.

USB Mass Storage Device Configuration Screen

You can use this screen to select options for the USB Mass Storage
Devices Configuration. Use the up and down <Arrow> keys to select
an item. Use the <Plus> and <Minus> keys to change the value of the
selected option.

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Chapter 2:BIOS Configuration

USB Mass Storage Device Delay

Set the value for the number of seconds that POST waits for the USB
mass storage device after start unit command is issued. The options are
10, 20, 30 and 40 seconds.

Emulation Type

Set the emulation type to Auto, Floppy, Forced FDD, Hard Disk or
CDROM. If Auto, USB devices less than 530MB will be emulated as
floppy and remaining devices as Hard Drive. Forced FDD option can
be used to force a formatted HDD device to boot as FDD (ex. ZIP
Drive).

PCI/PnP Setup

Select the PCI/PnP tab from the ezPORT setup screen to enter the Plug
and Play BIOS Setup screen. You can display a Plug and Play BIOS
Setup option by highlighting it using the <Arrow> keys.

Plug and Play O/S

Set this value to allow the system to modify the settings for Plug and
Play operating system support. The Optimal and Fail-Safe default
setting is Yes.

No The No setting is for operating systems that do not meet the Plug
and Play specifications. It allows the BIOS to configure all the
devices in the system.
Yes The Yes setting allows the operating system to change the
interrupt, I/O, and DMA settings. Set this option if the system is
running Plug and Play aware operating systems.

PCI Latency Timer

Set this value to allow the PCI Latency Timer to be adjusted. This
option sets the latency of all PCI devices on the PCI bus. The Optimal
and Fail-Safe default setting is 64.

32 This option sets the PCI latency to 32 PCI clock cycles.
64 This option sets the PCI latency to 64 PCI clock cycles. This is the

default setting.

96 This option sets the PCI latency to 96 PCI clock cycles.
128 This option sets the PCI latency to 128 PCI clock cycles.
160 This option sets the PCI latency to 160 PCI clock cycles.
192 This option sets the PCI latency to 192 PCI clock cycles.
224 This option sets the PCI latency to 224 PCI clock cycles.
248 This option sets the PCI latency to 248 PCI clock cycles.

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Captor M – Installation Guide

Allocate IRQ to VGA

Set this value to allow or restrict the system from giving the VGA
adapter card an interrupt address. The Optimal and Fail-Safe default
setting is Yes.

Yes Set this value to allow the allocation of an IRQ to a VGA adapter
card that uses the PCI local bus. This is the default setting.
No Set this value to prevent the allocation of an IRQ to a VGA
adapter card that uses the PCI local bus.

Palette Snooping

Set this value to allow the system to modify the Palette Snooping
settings. The Optimal and Fail-Safe default setting is Disabled.

Disabled This is the default setting and should not be changed unless
the VGA card manufacturer requires Palette Snooping to be Enabled.
Enabled This setting informs the PCI devices that an ISA based
Graphics device is installed in the system. It does this so the ISA
based Graphics card will function correctly. This does not necessarily
indicate a physical ISA adapter card. The graphics chipset can be
mounted on a PCI card. Always check with your adapter card’s
manuals first, before modifying the default settings in the BIOS.

PCI IDE BusMaster

Set this value to allow or prevent the use of PCI IDE bus mastering.
The Optimal and Fail-Safe default setting is Disabled.

Disabled Set this value to prevent PCI bus mastering. This is the
default setting.
Enabled This option specifies that the IDE controller on the PCI
local bus has mastering capabilities.

OffBoard PCI/ISA IDE Card

Set this value to allow the OffBoard PCI/ISA IDE Card to be selected.
The Optimal and Fail-Safe default setting is Auto.

Auto This setting will auto select the location of an OffBoard PCI
IDE adapter card. This is the default setting.
PCI Slot1 This setting will select PCI Slot 1 as the location of the
OffBoard PCI IDE adapter card. Use this setting only if there is an
IDE adapter card installed in PCI Slot 1.
PCI Slot2 This setting will select PCI Slot 2 as the location of the
OffBoard PCI IDE adapter card. Use this setting only if there is an
IDE adapter card installed in PCI Slot 2.
PCI Slot3 This setting will select PCI Slot 3 as the location of the
OffBoard PCI IDE adapter card. Use this setting only if there is an
IDE adapter card installed in PCI Slot 3.
PCI Slot4 This setting will select PCI Slot 4 as the location of the
OffBoard PCI IDE adapter card. Use this setting only if there is an
IDE adapter card installed in PCI Slot 4.

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Chapter 2:BIOS Configuration

PCI Slot5 This setting will select PCI Slot 5 as the location of the
OffBoard PCI IDE adapter card. Use this setting only if there is an
IDE adapter card installed in PCI Slot 4.
PCI Slot6 Do not use this option.

IRQ

Set this value to allow the IRQ settings to be modified. The Optimal
and Fail-Safe default setting is Available.

IRQ3
IRQ4
IRQ5
IRQ7
IRQ9
IRQ10
IRQ11
IRQ14
IRQ15

Available This setting allows the specified IRQ to be used by a

PCI/PnP device. This is the default setting.
Reserved This setting allows the specified IRQ to be used by a
legacy ISA device.

DMA

Set this value to allow the DMA setting to be modified. The optimal
and Fail-Safe default setting is Available.

DMA Channel 0
DMA Channel 1
DMA Channel 3
DMA Channel 5
DMA Channel 6
DMA Channel 7

Available This setting allows the specified DMA to be used by

PCI/PnP device. This is the default setting.
Reserved This setting allows the specified DMA to be used by a
legacy ISA device.

Reserved Memory Size

Set this value to allow the system to reserve memory that is used by
ISA devices. The optimal and Fail-Safe default setting is Disabled.

Disabled Set this value to prevent BIOS from reserving memory to
ISA devices.
16K Set this value to allow the system to reserve 16K of the system
memory to the ISA devices.
32K Set this value to allow the system to reserve 32K of the system
memory to the ISA devices.
64K Set this value to allow the system to reserve 64K of the system
memory to the ISA devices.

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Reserved Memory Address

Set this value to the base address of memory block to reserve for legacy
ISA devices. The optimal and Fail-Safe default setting is C8000.

C0000
C4000
C8000
CC000
D0000
D4000
D8000
DC000

Boot Setup

Select the Boot tab from the ezPORT setup screen to enter the Boot
BIOS Setup screen. You can select any of the items in the left frame of
the screen, such as Boot Device Priority, to go to the sub menu for that
item. You can display an Boot BIOS Setup option by highlighting it
using the <Arrow> keys.

BOOT SETTINGS CONFIGURATION SCREEN

Boot Settings Configuration

Use this screen to select options for the Boot Settings Configuration.
Use the up and down <Arrow> keys to select an item. Use the <Plus>
and <Minus> keys to change the value of the selected option.

Quick Boot

The Optimal and Fail-Safe default setting is Disabled.

Disabled Set this value to allow the BIOS to perform all POST tests.
Enabled Set this value to allow the BIOS to skip certain POST tests

to boot faster.

Quiet Boot

Set this value to allow the boot up screen options to be modified
between POST messages or OEM logo. The Optimal and Fail-Safe
default setting is Enabled.

Disabled Set this value to allow the computer system to display the
POST messages.
Enabled Set this value to allow the computer system to display the
OEM logo. This is the default setting.

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Chapter 2:BIOS Configuration

Add-On ROM Display Mode

Set this option to display add-on ROM (read-only memory) messages.
The Optimal and Fail-Safe default setting is Force BIOS. An example
of this is a SCSI BIOS or VGA BIOS.

Force BIOS Set this value to allow the computer system to force a
third party BIOS to display during system boot. This is the default
setting.
Keep Current Set this value to allow the computer system to display
the ezPORT information during system boot.

Boot up Num-Lock

Set this value to allow the Number Lock setting to be modified during
boot up. The Optimal and Fail-Safe default setting is Off.

Off This option does not enable the keyboard Number Lock
automatically. To use the 10-keys on the keyboard, press the Number
Lock key located on the upper left-hand corner of the 10-key pad.
The Number Lock LED on the keyboard will light up when the
Number Lock is engaged.
On Set this value to allow the Number Lock on the keyboard to be
enabled automatically when the computer system is boot up. This
allows the immediate use of 10-keys numeric keypad located on the
right side of the keyboard. To confirm this, the Number Lock LED
light on the keyboard will be lit.

PS/2 Mouse Support

Set this value to allow the PS/2 mouse support to be adjusted. The
Optimal and Fail-Safe default setting is Enabled.

Disabled This option will prevent the PS/2 mouse port from using
system resources and will prevent the port from being active. Use this
setting if installing a serial mouse.
Enabled Set this value to allow the system to use a PS/2 mouse. This
is the default setting.

Wait for ‘F1’ If Error

Set this value to allow the Wait for ‘F1’ Error setting to be modified.
The Optimal and Fail-Safe default setting is Enabled.

Disabled This prevents the ezPORT to wait on an error for user
intervention. This setting should be used if there is a known reason
for a BIOS error to appear. An example would be a system
administrator must remote boot the system. The computer system
does not have a keyboard currently attached. If this setting is set, the
system will continue to boot up in to the operating system. If ‘F1’ is
enabled, the system will wait until the BIOS setup is entered.
Enabled Set this value to allow the system BIOS to wait for any
error. If an error is detected, pressing <F1> will enter Setup and the
BIOS setting can be adjusted to fix the problem. This normally
happens when upgrading the hardware and not setting the BIOS to
recognize it. This is the default setting.

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Hit ‘DEL’ Message Display

Set this value to allow the Hit “DEL” to enter Setup Message Display
to be modified. The Optimal and Fail-Safe default setting is Enabled.

Disabled This prevents the ezPORT to display

during memory initialization. If Quiet Boot is enabled, the Hit ‘DEL’
message will not display.
Enabled This allows the ezPORT to display

during memory initialization. This is the default setting.

Hit Del to enter Setup

Hit Del to enter Setup

Interrupt 19 Capture

Set this value to allow option ROMs such as network controllers to trap
BIOS interrupt 19.

Disabled The BIOS prevents option ROMs from trapping interrupt

19.

Enabled The BIOS allows option ROMs to trap interrupt 19.

BOOT DEVICE PRIORITY

Boot Device Priority

Use this screen to specify the order in which the system checks for the
device to boot from. To access this screen, select Boot Device Priority
on the Boot Setup screen and press <Enter>.

1

st Boot Device

2nd Boot Device
3rd Boot Device

Set the boot device options to determine the sequence in which the
computer checks which device to boot from. The settings are
Removable Dev., Hard Drive, or ATAPI CDROM. The Optimal and
Fail-Safe settings are:

• 1

st boot device – Removable Device
nd boot device – Hard Drive

• 2

rd boot device – ATAPI CDROM

• 3
To change the boot order, select a boot category type such as Hard disk
drives, Removable media, or ATAPI CD ROM devices from the boot
menu. For example, if the 1st boot device is set to Hard disk drives, then
BIOS will try to boot to hard disk drives first.
Note: When you select a boot category from the boot menu, a list of
devices in that category appears. For example, if the system has three
hard disk drives connected, then the list will show all three hard disk
drives attached.

HARD DISK DRIVES

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Chapter 2:BIOS Configuration

Hard disk drives

Use this screen to view the hard disk drives in the system. To access
this screen, select Hard disk drives on the Boot Setup screen and press
<Enter>.

REMOVABLE DEVICES

Removable Devices

Use this screen to view the removable drives attached to the system. To
access this screen, select Removable Devices on the Boot Setup screen
and press <Enter>.

ATAPI CDROM DRIVES

ATAPI CD-ROM Drives

Use this screen to view the ATAPI CD-ROM drives in the system. To
access this screen, select ATAPI CDROM Drives on the Boot Setup
screen and press <Enter>.

Security Setup

ezPORT Password Support

Two Levels of Password Protection

ezPORT provides both a Supervisor and a User password. If you use
both passwords, the Supervisor password must be set first. The system
can be configured so that all users must enter a password every time the
system boots or when ezPORT Setup is executed, using either or either
the Supervisor password or User password. The Supervisor and User
passwords activate two different levels of password security. If you
select password support, you are prompted for a one to six character
password. Type the password on the keyboard. The password does not
appear on the screen when typed. Make sure you write it down. If you
forget it, you must drain NVRAM and reconfigure.

Remember the Password

Keep a record of the new password when the password is changed. If
you forget the password, you must erase the system configuration
information in NVRAM. See (Deleting a Password) for information
about erasing system configuration information.

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Select Security Setup from the ezPORT Setup main BIOS setup menu.
All Security Setup options, such as password protection and virus
protection, are described in this section. To access the sub menu for the
following items, select the item and press <Enter>:

• Change Supervisor Password

• Change User Password

• Clear User Password

Supervisor Password

Indicates whether a supervisor password has been set. If the password
has been installed, Installed displays. If not, Not Installed displays.

User Password

Indicates whether a user password has been set. If the password has
been installed, Installed displays. If not, Not Installed displays.

Change Supervisor Password

Select this option and press <Enter> to access the sub menu. You can
use the sub menu to change the supervisor password.

Change User Password

Select this option and press <Enter> to access the sub menu. You can
use the sub menu to change the user password.

Clear User Password

Select this option and press <Enter> to access the sub menu. You can
use the sub menu to clear the user password.

Boot Sector Virus Protection

This option is near the bottom of the Security Setup screen. The
Optimal and Fail-Safe default setting is Disabled

Disabled Set this value to prevent the Boot Sector Virus Protection.
This is the default setting.
Enabled Select Enabled to enable boot sector protection. ezPORT
displays a warning when any program (or virus) issues a Disk Format
command or attempts to write to the boot sector of the hard disk
drive. If enabled, the following appears when a write is attempted to
the boot sector. You may have to type N several times to prevent the
boot sector write.
Boot Sector Write!
Possible VIRUS: Continue (Y/N)? _
The following appears after any attempt to format any cylinder, head,
or sector of any hard disk drive via the BIOS INT 13 Hard disk drive
Service:
Format!!!
Possible VIRUS: Continue (Y/N)? _

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Chapter 2:BIOS Configuration

CHANGE SUPERVISOR PASSWORD

Change Supervisor Password

Select Change Supervisor Password from the Security Setup menu and
press <Enter>.

Enter New Password:

appears. Type the password and press <Enter>. The screen does not
display the characters entered. Retype the password as prompted and
press <Enter>. If the password confirmation is incorrect, an error
message appears. The password is stored in NVRAM after ezPORT
completes.

Change User Password

Select Change User Password from the Security Setup menu and press
<Enter>.

Enter New Password:

appears. Type the password and press <Enter>. The screen does not
display the characters entered. Retype the password as prompted and
press <Enter>. If the password confirmation is incorrect, an error
message appears. The password is stored in NVRAM after ezPORT
completes.

Clear User Password

Select Clear User Password from the Security Setup menu and press
<Enter>.

Clear New Password
[Ok] [Cancel]

appears. Type the password and press <Enter>. The screen does not
display the characters entered. Retype the password as prompted and
press <Enter>. If the password confirmation is incorrect, an error
message appears. The password is stored in NVRAM after ezPORT
completes.

Deleting a Password

If you forget the passwords you set up through ezPORT Setup, the only
way you can reset the password is to erase the system configuration
information where the passwords are stored. System configuration data
is stored in CMOS RAM, a type of memory that consumes very little
power. You can drain CMOS RAM power by removing the battery or
resetting CMOS information using the CMOS erase jumper.

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Captor M – Installation Guide

Chipset Setup

Select the Chipset tab from the ezPORT setup screen to enter the
Chipset BIOS Setup screen. You can select any of the items in the left
frame of the screen, such as CPU Configuration, to go to the sub menu
for that item. You can display a Chipset BIOS Setup option by
highlighting it using the <Arrow> keys. All Chipset BIOS Setup
options are described in this section.

NORTH BRIDGE CONFIGURATION

Intel Montara-GML North Bridge Configuration
You can use this screen to select options for the North Bridge
Configuration. Use the up and down <Arrow> keys to select an item.
Use the <Plus> and <Minus> keys to change the value of the selected
option.

Primary Video Device

Set this value to allow the Primary video device to be selected. The
Optimal and Fail-Safe default setting is Auto.

Auto This setting will auto select the Primary video device. This is
the default setting.
Internal This setting will select the internal video device. ATX-G
only.
External PCI This setting will force any external PCI video card to
be the primary video device.

Graphics Mode Select

Set this value to select the amount of system memory used by the
internal graphics device for legacy VESA modes. The Optimal and
Fail-Safe default setting is Enabled, 8MB.

Disabled This setting will not assign memory for the internal
graphics engine.
Enabled, 1MB This setting will enable the internal graphics engine
and allocate 1MB of system memory for it.
Enabled, 4MB This setting will enable the internal graphics engine
and allocate 4MB of system memory for it.
Enabled, 8MB This setting will enable the internal graphics engine
and allocate 8MB of system memory for it. This is the default setting.
Enabled, 16MB This setting will enable the internal graphics engine
and allocate 16MB of system memory for it.
Enabled, 32MB This setting will enable the internal graphics engine
and allocate 32MB of system memory for it.

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Chapter 2:BIOS Configuration

IGD Device 2, Function 1

Enable or Disable the internal graphics device by setting item to the
desired value. The Optimal and Fail-Safe default setting is Enabled.

Disabled.
Enabled.

Boot Type

Selects the display devices to be enabled during boot.

VBIOS default. Let the Video BIOS decide based on its settings.
Default option.

CRT. CRT only.
LFP. LVDS Panel only.
CRT+LFP. CRT and LVDS panel on.

Flat Panel Type

Selects the LVDS panel resolution to be enabled. Default is 1024x768.

640x480.
800x600.
1024x768.
1280x1024.
1400x1050.
1600x1200.

Flat Panel Scaling

Selects the policies for LVDS panel scaling. The CRT and LVDS must
have the same resolution.

Disabled.
Auto.
Force Scaling.

SOUTH BRIDGE CONFIGURATION

Intel ICH4 South Bridge Configuration
You can use this screen to select options for the South Bridge
Configuration. Use the up and down <Arrow> keys to select an item.
Use the <Plus> and <Minus> keys to change the value of the selected
option.

ICH4 Dev 31 Func1, IDE

Set this option to Enable or Disable the on board IDE controller. It
must be enabled if any Hard Disk Drive, CDROM or other IDE devices
will be connected to the on board IDE connectors.

Enabled This setting will keep the onboard IDE Controller enabled.
This is the default setting.
Disabled This setting will turn off the on board IDE controller.

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ICH4 Dev 31 Func3, SMBUS

Set this option to Enable or Disable the on board SMBUS controller.
The SMBUS controller is used for memory detection and other board
management functions.

Enabled This setting will keep the onboard SMBUS Controller
enabled. This is the default setting.
Disabled This setting will turn off the on board SMBUS controller.

ICH4 Dev 31 Func5, AC97

Set this option to Enable or Disable the on board Audio AC97
controller. If Audio is enabled, certain OSs will require a driver
installation on every boot.

Enabled This setting will keep the onboard Audio Controller
enabled. This is the default setting.
Disabled This setting will turn off the on board Audio controller.

ICH4 Dev29 Func0, USB#1

Set this option to Enable or Disable the first on board USB 1.1
controller that controls USB Ports 0 and 1.

Enabled This setting will keep the onboard USB#1 Controller
enabled. This is the default setting.
Disabled This setting will turn off the on board USB#1 controller.
USB controller #1 can only be disabled if USB controllers #2 and #3
are already disabled.

ICH4 Dev29 Func1, USB#2

Set this option to Enable or Disable the second on board USB 1.1
controller that controls USB Ports 2 and 3.

Enabled This setting will keep the onboard USB#2 Controller
enabled. This is the default setting.
Disabled This setting will turn off the on board USB#2 controller.
USB controller #2 can only be disabled if USB controller #3 is
already disabled.

ICH4 Dev29 Func2, USB#3

Set this option to Enable or Disable the third on board USB 1.1
controller that controls USB Ports 4 and 5.

Enabled This setting will keep the onboard USB#3 Controller
enabled. This is the default setting.
Disabled This setting will turn off the on board USB#3 controller.

ICH4 Dev29 Func7, EHC

Set this option to Enable or Disable the on board USB 2.0 controller. If
USB 2.0 is enabled, certain OSs will require a driver installation on
every boot. The USB 2.0 controller is able to handle all 6 ports on
board at the same time. The ports are physically shared with the 3 USB

1.1 controllers.

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Chapter 2:BIOS Configuration

Enabled This setting will keep the onboard USB 2.0 Controller
enabled. The USB 1.1 controllers #1, #2, and #3 must be enabled
first.
Disabled This setting will turn off the on board USB 2.0 controller.
This is the default setting.

LPC 4E-4F Decode

Set this option to Enable or Disable the decoding of I/O addresses 4eh
and 4fh by the LPC bridge.

Enabled This is the default setting.
Disabled

Primary LAN

Set this option to Enable or Disable the on board primary LAN
controller.

Enabled This setting will keep the onboard Primary Ethernet
Controller enabled. This is the default setting.
Disabled This setting will turn off the on board primary Ethernet
controller.

Secondary LAN

Set this option to Enable or Disable the on board (optional) secondary
LAN controller. This option does not appear on boards without the
optional secondary LAN controller.

Enabled This setting will keep the optional onboard secondary
Ethernet Controller enabled. This is the default setting.
Disabled This setting will turn off the optional on board secondary
Ethernet controller.

Moon ISA Device

Set this option to Enable or Disable the on board ISA bridge.

Enabled This setting will keep the onboard ISA bridge enabled.
When the ISA bridge is enabled, the LPC bridge goes into positive
decoding. This is the default setting.
Disabled This setting will turn off the on board ISA bridge. The LPC
bridge will be in subtractive decoding.

ISA 8-bit I/O Recovery

Set this value to the number of ISA bus clocks between back-to- back 8
bit I/O read cycles.

1-15 Clocks. This option is only available when the ISA bridge is
enabled. The Default is 5 Clks.

ISA 16-bit I/O Recovery

Set this value to the number of ISA bus clocks between back-to- back
16 bit I/O read cycles.

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Captor M – Installation Guide

1-15 Clocks. This option is only available when the ISA bridge is
enabled. The Default is 4 Clks.

IOAPIC

Set this option to Enable or Disable the IOAPIC. The I/O Advanced
Programmable Interrupt Controller allows extra functionality to the
traditional 8259 Interrupt controller, including the ability for ACPI OSs
to redirect interrupts.

Enabled This is the default setting.
Disabled

Extended IOAPIC

Set this option to Enable or Disable the Extended features of the
IOAPIC.

Enabled This is the default setting.
Disabled

CPU B.I.S.T.

Set this option to Enable or Disable the CPU Built In Self Test.

Enabled
Disabled This is the default setting.

ICH4 DMA Collection

Set this option to Enable or Disable the DMA Buffer Collection. The
DMA buffer Collection enabled increases the performance of DMA
transactions.

Enabled This is the default setting.
Disabled

DMA – 0 Type

Set this value to select the DMA channel 0 to the LPC DMA (legacy
devices on the LPC bus) or to the PC/PCI protocol used by ISA devices
connected to the ISA bridge. There is no legacy LPC device using
channel 0.

LPC DMA This is the default setting.
PC/PCI Used by ISA devices.

DMA – 1 Type

Set this value to select the DMA channel 1 to the LPC DMA (legacy
devices on the LPC bus) or to the PC/PCI protocol used by ISA devices
connected to the ISA bridge. There is no legacy LPC device using
channel 1.

LPC DMA This is the default setting.
PC/PCI Used by ISA devices.

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Chapter 2:BIOS Configuration

DMA – 2 Type

Set this value to select the DMA channel 2 to the LPC DMA (legacy
devices on the LPC bus) or to the PC/PCI protocol used by ISA devices
connected to the ISA bridge. ATTENTION: The floppy controller uses
channel 2. Leave it to LPC DMA if FDD enabled.

LPC DMA This is the default setting.
PC/PCI Used by ISA devices.

DMA – 3 Type

Set this value to select the DMA channel 3 to the LPC DMA (legacy
devices on the LPC bus) or to the PC/PCI protocol used by ISA devices
connected to the ISA bridge. There is no legacy LPC device using
channel 3.

LPC DMA This is the default setting.
PC/PCI Used by ISA devices.

DMA – 5 Type

Set this value to select the DMA channel 5 to the LPC DMA (legacy
devices on the LPC bus) or to the PC/PCI protocol used by ISA devices
connected to the ISA bridge. There is no legacy LPC device using
channel 5.

LPC DMA This is the default setting.
PC/PCI Used by ISA devices.

DMA – 6 Type

Set this value to select the DMA channel 6 to the LPC DMA (legacy
devices on the LPC bus) or to the PC/PCI protocol used by ISA devices
connected to the ISA bridge. There is no legacy LPC device using
channel 6.

LPC DMA This is the default setting.
PC/PCI Used by ISA devices.

DMA – 7 Type

Set this value to select the DMA channel 7 to the LPC DMA (legacy
devices on the LPC bus) or to the PC/PCI protocol used by ISA devices
connected to the ISA bridge. There is no legacy LPC device using
channel 7.

LPC DMA This is the default setting.
PC/PCI Used by ISA devices.

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Captor M – Installation Guide

Power Management Setup

Select the Power tab from the ezPORT setup screen to enter the Power
BIOS Setup screen. You can display a Power BIOS Setup option by
highlighting it using the <Arrow> keys. All Power BIOS Setup options
are described in this section.

Power Management/APM

Set this option to Enable or Disable the SMI based power management
and APM support.

Enabled This is the default setting.
Disabled

Power Button Mode

This option specifies how the power button mounted externally on the
computer chassis is used. The settings are: On/Off and suspend. The
default setting is On/Off.

On/Off This is the default setting.
Suspend

Restore on A/C Power Loss

Set this value to select how the CPU board will recover from an
accidental A/C power failure – Mechanical off G3 State.

Power ON This setting will force the CPU board to turn ON as soon
as A/C power is reestablished. This is the default setting.
Power OFF This setting will keep the CPU board OFF when A/C
power is reestablished. To turn the board ON, the power button must
be used.
Last State This setting will put the CPU board back to its state
before the accidental power failure. It requires ACPI enabled and an
ACPI capable OS. The board must be normally turned OFF through a
controlled S5 (soft OFF/Power button) transition if it is not an
accidental power failure.

Exit Menu

Select the Exit tab from the ezPORT setup screen to enter the Exit
BIOS Setup screen. You can display an Exit BIOS Setup option by
highlighting it using the <Arrow> keys. All Exit BIOS Setup options
are described in this section.

Exit Saving Changes

When you have completed the system configuration changes, select this
option to leave ezPORT Setup and reboot the computer so the new

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Chapter 2:BIOS Configuration

system configuration parameters can take effect. Select Exit Saving
Changes from the Exit menu and press <Enter>.

Save Configuration Changes and Exit Now?
[Ok] [Cancel]

appears in the window. Select Ok to save changes and exit.

Exit Discarding Changes

Select this option to quit ezPORT Setup without making any permanent
changes to the system configuration. Select Exit Discarding Changes
from the Exit menu and press <Enter>.

Discard Changes and Exit Setup Now?
[Ok] [Cancel]

appears in the window. Select Ok to discard changes and exit.

Load Optimal Defaults

ezPORT automatically sets all ezPORT Setup options to a complete set
of default settings when you Select this option. The Optimal settings
are designed for maximum system performance, but may not work best
for all computer applications. In particular, do not use the Optimal
ezPORT Setup options if your computer is experiencing system
configuration problems.
Select Load Optimal Defaults from the Exit menu and press <Enter>.
Select Ok to load optimal defaults.

Load Fail-Safe Defaults

ezPORT automatically sets all ezPORT Setup options to a complete set
of default settings when you Select this option. The Fail-Safe settings
are designed for maximum system stability, but not maximum
performance. Select the Fail-Safe ezPORT Setup options if your
computer is experiencing system configuration problems. Select Load
Fail-Safe Defaults from the Exit menu and press <Enter>.

Load Fail-Safe Defaults?
[Ok] [Cancel]

appears in the window. Select Ok to load Fail-Safe defaults.

Discard Changes

Select Discard Changes from the Exit menu and press <Enter>.
Select Ok to discard changes.

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User's Notes:

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Chapter 3: Upgrading

Chapter 3 Upgrading

Upgrading the Microprocessor

The latest revision of the Captor M currently supports full series of
Intel Pentium M, Intel Pentium M on 90nm process with 2MB L2
cache and Celeron M 400MHz PSB processors featuring next­generation Intel SpeedStep® technology on the µFC-PGA 478
package. Please, check the manufacturer’s web site for details and
revisions regarding CPU speed.
Since the Captor M features CPU auto-sensing device there is no
jumper to be set when changing the CPU.

Upgrading the System Memory

The Captor M allows an upgrade of the system memory with up to
2GB unbuffered SDRAM DDR DIMM modules in two memory slots.
ECC and non-ECC DDR SDRAM modules are supported, PC1600
(DDR 200MHz), PC2100 (DDR 266MHz) and PC2700 (DDR
333MHz). It is very important that the quality of the DIMMs is good.
Unreliable operation of the system may result if poor quality DIMMs
are used. Always purchase your memory from a reliable source.

System Memory Features:

• 2.5 V (only) 184-pin DDR SDRAM DIMMs with gold-plated
contacts.

• Unbuffered, unregistered single-sided or double-sided
DIMMs.

• Maximum total system memory: 2 GB; minimum total system
memory: 32 MB .

• DDR333 MHz (PC2700) and DDR266 MHz (PC2100) DDR
SDRAM DIMMs only.

• Serial Presence Detect (SPD).

• You can use ECC and non-ECC DIMMs.

• Do not use Registered DIMMs.

• Double sided x16 DIMMs are not supported.

The following table lists the supported DDR DIMM Configurations:

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Captor M – Installation Guide

Table 3-1 Supported DDR DIMM Configurations

DIMM
Capacity

64 MB 4 SS 128 Mbit 4 8 M x 16
128 MB 8 SS 128 Mbit 8 16 M x 8
128 MB 4 SS 256 Mbit 4 16 M x 16
256 MB 16 DS 128 Mbit 8 16 M x 8 8 16 M x 8
256 MB 8 SS 256 Mbit 8 32 M x 8
256 MB 4 SS 512 Mbit 4 32 M x 16
512 MB 16 DS 256 Mbit 8 32 M x 8 8 32 M x 8
512 MB 8 SS 512 Mbit 8 64 M x 8
1024 MB 16 DS 512 Mbit 8 64 M x 8 8 64 M x 8

# of
Dev./
DIMM

# of
Sides

DRAM
Tech.

Front Side
Population

Count Config Count Config

Back Side
Population

User's Notes:

52

Appendix A: Technical Specifications

Appendix A Technical

Specifications

Chipsets

Core Logic

North Bridge - Intel 855GME.

South Bridge – Intel ICH4.

Peripheral I/O

Standard Microsystems (SMSC) LPC47M192.

BIOS

System BIOS

American Megatrends AMIBIOS8.

Flash BIOS

Standard feature for System BIOS. Flash programming built into
the BIOS. BIOS to be flashed is read from a floppy.

Embedded I/O

Floppy

2 Floppies up to 2.88 MB.

IDE

Dual channel PCI 32-bit EIDE controller – UDMA 66/100
supported. One extra connector (mini-Header 44 pin) in
parallel to IDE2 for Solid State IDE disk or any 44 pin IDE
device support.

53

Captor M – Installation Guide

Parallel ATA IDE Interfaces

The ICH4 Parallel ATA IDE controller has two independent
bus-mastering Parallel ATA IDE interfaces that can be
independently enabled. The Parallel ATA IDE interfaces
support the following modes:

• Programmed I/O (PIO): processor controls data
transfer.

• 8237-style DMA: DMA offloads the processor,
supporting transfer rates of up to 16 MB/sec.

• Ultra DMA: DMA protocol on IDE bus supporting
host and target throttling and transfer rates of up to
33 MB/sec.

• ATA-66: DMA protocol on IDE bus supporting host
and target throttling and transfer rates of up to 66
MB/sec. ATA-66 protocol is similar to Ultra DMA
and is device driver compatible.

• ATA-100: DMA protocol on IDE bus allows host
and target throttling. The ICH ATA-100 logic can
achieve read transfer rates up to 100 MB/sec and
write transfer rates up to 88 MB/sec.

NOTE

ATA-66 and ATA-100 are faster timings and require a
specialized cable (80-conductor) to reduce reflections, noise,
and inductive coupling.

The Parallel ATA IDE interfaces also support ATAPI devices
(such as CD-ROM drives).
The BIOS supports Logical Block Addressing (LBA) and
Extended Cylinder Head Sector (ECHS) translation modes.
The drive reports the transfer rate and translation mode to the
BIOS. The Phoenix AT supports Laser Servo (LS-120)
diskette technology through the Parallel ATA IDE interfaces.
The BIOS supports booting from an LS-120 drive.

NOTE

The BIOS will always recognize an LS-120 drive as an ATAPI
floppy drive. To ensure correct operation, do not configure the
drive as a hard disk drive.

Serial Ports

Six high speed RS-232 serial ports 16 Bytes FIFO
(16550/16550D). COM2 optional RS-232 IrDA and COM1
optional RS-422/485.

54

Appendix A: Technical Specifications

Parallel Port

One Centronics™ compatible bi-directional parallel port.
EPP/ECP mode compatible.

Keyboard/Mouse Port

One mouse/keyboard combined PS/2 connector.

USB Interfaces

Six Universal Serial Bus connectors. USB 1.1 and USB 2.0
compliant.

On-board Ethernet

Two RJ45 Ethernet connectors (second optional, both optional
10/100/1000).

On-board Buzzer

Audio

Audio (AD1981B) AC97 compliant. Microphone In, Stereo
Line In and Out, CD In.

Industrial Devices

Temperature and Voltage Device

Automatic CPU voltage & temperature monitoring device
(optional).

Power Management

Power button function: advanced power management support.

55

Captor M – Installation Guide

Watchdog Timer (optional)

On-Board POST Display Diagnostics

Miscellaneous

CMOS/Battery

RTC with lithium battery. Connector for external connection.

Control Panel Connections

Reset, Keylock, Soft Power. LEDs for power and IDE.

CPU Socket

Standard ZIF (Zero Insertion Force), µFC-PGA 478.

Form Factor

Full ISA/PCI form factor CPU card (4.53” x 13.3”).

PCB Construction

Eight Layers, dry film mask.

Manufacturing Process

Automated surface mount.

Table A-1 Environmental

Environmental Operating Non-operating

Temperature

Humidity

Shock 2.5G @ 10ms 10G @ 10ms

Vibration 0.25 @ 5-100Hz 5 @ 5-100Hz

0° to +55° C -40° to +65° C

5 to 95% @ 40° C

non-condensing

5 to 95% @ 40° C

non-condensing

56

Appendix A: Technical Specifications

Memory Map

Address
Range
Decimal

960K-1M

896K-960K

768K-896K

640K-768K

633K-640K

512K-633K

0K- 512K

Address
Range
Hexadecimal

0F0000­0FFFFF
0E0000­0EFFFF

0C0000­0DFFFF

0A0000­0BFFFF

09E400­09FFFF

080000­09E3FF

000000­07FFFF

Size Description

64 KB Upper BIOS

64 KB Lower BIOS

Expansion

128 KB

128 KB

7KB

121 KB

512 KB

Card BIOS
and Buffer
Standard
PCI/ISA
Video
Memory
BIOS
Reserved
Ext.
Conventional
memory
Conventional
memory

DMA Channels

DMA # Data Width System Resource
0
1
2
3
4
5
6
7

8- or 16-bits
8- or 16-bits Parallel port (for ECP) (if selected)
8- or 16-bits Floppy Drive
8- or 16-bits Parallel port (for ECP) (if selected)
Reserved- cascade channel
16-bits Open
16-bits Open
16-bits Open

57

Captor M – Installation Guide

I/O Map

Address (hex) Description

0000-000F DMA 1
0020-0021 Interrupt Controller 1
0040 Timer/Counter 0
0041 Timer/Counter 1
0042 Timer/Counter 2
0043 Timer Control Word
0060 Keyboard Controller Byte _ Reset IRQ
0061 NMI Status and Control
0070, bit 7 NMI enable
0070, bits 6:0 RTC Index
0071 RTC Data
0072 RTC Extended Index
0073 RTC Extended Data

0080-008F

0092 Port 92
00A0-00A1 Interrupt Controller 2
00B2-00B3 APM control
00C0-00DE DMA 2
00F0 Coprocessor Error
0170 _ 0177 Secondary IDE channel
01F0 _ 01F7 Primary IDE channel
0278-027F LPT2 (if selected)
02E8-02EF COM4 (default)
02F8-02FF COM2 (default)
0376 Secondary IDE channel command port
0377 Floppy channel 2 command
0377, bit 7 Floppy disk change, channel 2
0377, bits 6:0 Secondary IDE channel status port
0378-037F LPT1 (default)
03B4-03B5 Video (VGA)
03BA Video (VGA)
03BC-03CD LPT3 (if selected)
03C0-03CA Video (VGA)
03CC Video (VGA)
03CE-03CF Video (VGA)
03D4-03D5 Video (VGA)
03DA Video (VGA)

DMA page registers / POST code display also
located at 0080h

58

Appendix A: Technical Specifications

Address (hex) Description

03E8-03EF COM3 (default)
03F0-03F5 Floppy Channel 1
03F6 Primary IDE channel command port
03F7 Floppy Channel 1 command
03F7, bit 7 Floppy disk change channel 1
03F7, bits 6:0 Primary IDE channel status report
03F8-03FF COM1 (default)
0CF8-0CFB - 4
bytes
0CF9 Reset control register
0CFC-0CFF - 4
bytes

PCI configuration address register

PCI configuration data register

PCI Configuration Space Map

Bus # Device # Function # Description
00 00 00 855GME (Host Bridge)
00 00 01 855GME DDR SDRAM Reg.
00 00 03 855GME Config. Reg.
00 01 00 855GME PCI to PCI Bridge
00 02 00 855GME VGA Controller
00 1D 00 ICH4 USB UHC 1
00 1D 01 ICH4 USB UHC 2
00 1D 02 ICH4 USB UHC 3
00 1D 07 ICH4 USB EHC
00 1E 00 Hub Interface to PCI Bridge
00 1F 00 ICH4 LPC Bridge
00 1F 01 ICH4 Master IDE Controller
00 1F 03 ICH4 SMBus Controller
00 1F 05 ICH4 AC97 Audio Controller

01 00 00 AGP Card

02 03 00 Mini-PCI slot
02 04 00 LAN1 Controller
02 05 00 LAN2 Controller (optional)
02 06 00 NSC PCI to ISA Bridge
02 08-0F 00 PICMIG Backplane

59

Captor M – Installation Guide

Interrupts

IRQ System Resource
NMI I/O channel check
0 Reserved, interval timer
1 Reserved (keyboard)
2 Reserved (cascade)
3 COM2*
4 COM1*
5 User Available for PCI
6 Floppy Drive
7 LPT1*
8 Real time clock
9 User Available for PCI
10 User Available for PCI
11 User Available for PCI
12 PS/2 mouse port
13 Reserved (math coprocessor)
14 Primary IDE
15 Secondary IDE

*Default, but can be changed to another IRQ

SMBUS

Device Slave Address
SIO 00101101b
DIMM0 01010000b
DIMM1 01010001b
Clock Chip Write 11010010b
Clock Chip Read 11010011b

60

Appendix A: Technical Specifications

PCI Interrupt Routing Map

PCI
Device

PICMIG

Mini­PCI
Ethernet
1
Ethernet
2
IDE INTA
Audio INTA
ISA Br. AD22
USB 1 INTA
USB 2 INTA
USB 3 INTA
USB 2.0 INTA
SMBus INTA
VGA INTA

ID

PIRQA PIRQB PIRQC PIRQD PIRQE PIRQF PIRQG PIRQH

SEL
AD24-

AD31

AD19 INTB INTA

AD20 INTA

AD21 INTA

INTA INTB INTC INTD

Connectors Pin-out

How to identify pin number 1: Looking to the solder side (The board
side with fewer components) of the PCB (Printed Circuit Board), pin
number 1 will have a squared pad J. Other pins will have a circular
pad Q.

How to identify other pins: Connectors type DB, PS/2, RJ45, Power
ATX and USB are industry standards. DB connectors, for instance, are
numbered sequentially. The first row is numbered in sequence (be
aware that male and female connectors are mirrored – male connectors
are numbered from left to right when viewed from front and female
connectors are numbered from right to left when viewed from front).
The following rows resume the counting on the same side of pin
number 1. The counting is NOT circular like Integrated Circuits (legacy
from electronic tubes).

1z2z3z4z5z
6z7z8z9z

DB9 Male
Front view

54321
9876

DB9 Female
Front view

Header connectors are numbered alternately, i.e. pin number 2 is in the
other row, but in the same column of pin number 1. Pin number 3 is in
the same row of pin 1, but in the next column and so forth.

1 3z 5z 7z 9z
2z 4z 6z 8z10z

Header 10 pin connector
View from solder side of the PCB

61

Captor M – Installation Guide

Table A-9 Serial Port COM1 Header Connector

Pin# Serial Port Header – J4

1 DCD - RS-422/485RXA(opt.)
2 DSR
3 RX - RS-422/485TXB(opt.)
4 RTS
5 TX - RS-422/485TXA(opt.)
6 CTS
7 DTR
8 RI – RS-422/485RXB(opt.)
9 GND

10 Key

Table A-10 Serial Port COM2 Header Connector

Pin# Serial Port Header – J10

1 DCD
2 DSR
3 RX
4 RTS
5 TX
6 CTS
7 DTR
8 RI
9 GND

10 Key

62

Appendix A: Technical Specifications

Table A-11 Serial Port COM3 Header Connector

Pin# Serial Port Header – J3

1 DCD
2 DSR
3 RX
4 RTS
5 TX
6 CTS
7 DTR
8 RI
9 GND

10 Key

Table A-12 Serial Port COM4 Header Connector

Pin# Serial Port Header – J9

1 DCD
2 DSR
3 RX
4 RTS
5 TX
6 CTS
7 DTR
8 RI
9 GND

10 Key

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Captor M – Installation Guide

Table A-13 Serial Port COM5 Header Connector

Pin# Serial Port Header – J5

1 DCD
2 DSR
3 RX
4 RTS
5 TX
6 CTS
7 DTR
8 RI
9 GND

10 Key

Table A-14 Serial Port COM6 Header Connector

Pin# Serial Port Header – J11

1 DCD
2 DSR
3 RX
4 RTS
5 TX
6 CTS
7 DTR
8 RI
9 GND

10 Key

64

Appendix A: Technical Specifications

Table A-15 J24 Ethernet 1 RJ45

Pin#

Ethernet 1 (optional 1Gbe)

Connector – J24

1 TX+/ TX1+ (optional 1Gbe)
2 TX-/ TX1- (optional 1Gbe)
3 RX+/ RX1+ (optional 1Gbe)

4

5

Shorted to 5/ TX2+ (optional

1Gbe)

Shorted to 4/ TX2- (optional

1Gbe)

6 RX-/ RX1- (optional 1Gbe)

7

8

Table A-16 J18 Ethernet 2 RJ45 (optional)

Pin#

Shorted to 8/ RX2+ (optional

1Gbe)

Shorted to 7/ RX2- (optional

1Gbe)

Ethernet 2 (optional 1Gbe)

Connector – J18

1 TX+/ TX1+ (optional 1Gbe)
2 TX-/ TX1- (optional 1Gbe)
3 RX+/ RX1+ (optional 1Gbe)

4

5

Shorted to 5/ TX2+ (optional

1Gbe)

Shorted to 4/ TX2- (optional

1Gbe)

6 RX-/ RX1- (optional 1Gbe)

7

8

Shorted to 8/ RX2+ (optional

1Gbe)

Shorted to 7/ RX2- (optional

1Gbe)

65

Captor M – Installation Guide

Table A-17 J19 USB Ports 0 & 1 Header Connector

Pin# USB Header – J19

1 +5V – USB0
2 +5V – USB1
3 -D – USB0
4 -D – USB1
5 +D – USB0
6 +D – USB1
7 GROUND – USB0
8 GROUND – USB1
9 NC

10 Over Current

Table A-18 J21 USB Ports 2 & 3 Header Connector

Pin# USB Header – J21

1 +5V – USB2
2 +5V – USB3
3 -D – USB2
4 -D – USB3
5 +D – USB2
6 +D – USB3
7 GROUND – USB2
8 GROUND – USB3
9 NC

10 Over Current

66

Appendix A: Technical Specifications

Table A-19 J20 USB Ports 4 & 5 Header Connector

Pin# USB Header – J20

1 +5V – USB4
2 +5V – USB5
3 -D – USB4
4 -D – USB5
5 +D – USB4
6 +D – USB5
7 GROUND – USB4
8 GROUND – USB5
9 NC

10 Over Current

Table A-20 J16 Front Panel Header Connector

Pin# Front Panel Header – J16

1 HDD LED Cathode
2 Power LED Green Blink
3 HDD LED Anode
4 Power LED Yellow Blink
5 Reset - GND
6 Power Switch
7 Reset
8 Power Switch - GND

9 +5V
10 NC
11 Infra Red Tx (Opt.)
12 GND
13 GND
14 Power LED Cathode - GND
15 Infra Red Rx (Opt.)
16 Power LED Anode

67

Captor M – Installation Guide

Table A-21 J22 Parallel Header Connector

Pin# Parallel Header – J22

1 -STROBE

2 AUTOFEED

3 +DATA BIT 0

4 ERROR

5 +DATA BIT 1

6 INIT

7 +DATA BIT 2

8 SLCT IN

9 +DATA BIT 3
10 GND
11 +DATA BIT 4
12 GND
13 +DATA BIT 5
14 GND
15 +DATA BIT 6
16 GND
17 +DATA BIT 7
18 GND
19 ACK1
20 GND
21 BUSY
22 GND
23 PAPER EMPTY
24 GND
25 SLCT
26 NC

68

Appendix A: Technical Specifications

Table A-22 J26 Keyboard/Mouse Combined PS/2 Connector

Pin# Keyboard/Mouse Mini-DIN – J26

1

Keyboard Data

2 Mouse Data
3 GND
4 NA
5 VCC
6 Keyboard CLK
7 NA
8 Mouse CLK

Table A-23 CPU Fan, Rear Chassis Fan, External Battery,
Speaker, ATX PS_ON, CD INand LINE IN.

Connector Description

J27

J7

J33

J31

J23

J28

J29

1) Sense 2)+12V 3) GND (PWM)

1)Sense 2)+12V 3) GND (PWM)

1)+Vbat 2)GND

1)VCC 2) GND (PWM) 3) GND (PWM)

1)GND 2)PS_ON 3) +5V STBY

1)Left 2)GND 3)GND 4)Right

1)Left 2)GND 3)GND 4)Right

CPU FAN

Rear Chassis FAN

External Battery

Speaker (Alternate)

ATX PS_ON

CD IN

LINE IN

69

Captor M – Installation Guide

Table A-24 J32 Microphone IN, Line OUT/Headphone Header
Connector

Pin# Audio Header – J32

1 MIC IN

2 GND

3 MIC BIAS

4 +5VDC

5 Line OUT/Headphone Right

6 NC

7 NC

8 NC

9 Line OUT/Headphone Left
10 Line OUT sense

Table A-25 J2 LVDS Backlight Connector

Pin# LVDS Backlight – J2

1 Inverter Vcc

2 GND

3 GND

4 Backlight Logic Vcc

5 SMBUS Clock (optional)

6 SMBUS Data (optional)

7 Backlight Enable

70

Appendix A: Technical Specifications

Table A-26 J1 LVDS Connector

Pin# LVDS – J1

1 GND

2 LVDS VDD 3.3V

3 LVDS VDD 3.3V

4 LVDS DDC VCC 3.3V

5 NC

6 DDC CLK

7 DDC DATA

8 LVDS YAM0

9 LVDS YAP0
10 GND
11 LVDS YAM1
12 LVDS YAP1
13 GND
14 LVDS YAM2
15 LVDS YAP2
16 GND
17 LVDS CLK AM
18 LVDS CLK AP
19 GND
20 LVDS YBM0
21 LVDS YBP0
22 GND
23 LVDS YBM1
24 LVDS YBP1
25 GND
26 LVDS YBM2
27 LVDS YBP2
28 GND
29 LVDS CLK BM
30 LVDS CLK BP

71

Captor M – Installation Guide

User's Notes:

72

Appendix B: Flash BIOS

Appendix B Flash BIOS

programming
and codes

The Captor M offers the standard FLASH BIOS. When installed, you
will be able to update your BIOS without having to replace the
EEPROM. The AMIBIOS8 will read the new BIOS file from a floppy
disk during boot and replace the old BIOS.

When updating your BIOS, make sure you have a disk with the correct
BIOS file (its size should be 4Mb (512kB)) named AMIBOOT.ROM.

How to reflash the BIOS:

• Insert a floppy containing AMIBOOT.ROM into floppy A:

• Press [ctrl][home] during the beginning of POST(boot).

• Wait for the procedure to finish and reboot.

Please never turn the power off while reprogramming a FLASH BIOS.

Troubleshooting POST

AMIBIOS8 writes progress codes, also known as POST codes, to I/O
port 80h during POST, in order to provide information to OEM
developers about system faults. These POST codes may be monitored
by the On-board POST Display.

Table B-1 Bootblock Initialization Code Checkpoints

The Bootblock initialization code sets up the chipset, memory and other
components before system memory is available. The following table
describes the type of checkpoints that may occur during the bootblock
initialization portion of the BIOS.

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Captor M – Installation Guide

Checkpoint

Code

Before D1 Early chipset initialization is done. Early super I/O

initialization is done including RTC and keyboard
controller. NMI is disabled.

D1 Perform keyboard controller BAT test. Check if waking

up from power management suspend state. Save power­on CPUID value in scratch CMOS.

D0 Go to flat mode with 4GB limit and GA20 enabled.

Verify the bootblock checksum.

D2 Disable CACHE before memory detection. Execute full

memory sizing module. Verify that flat mode is enabled.

D3 If memory sizing module not executed, start memory

refresh and do memory sizing in Bootblock code. Do
additional chipset initialization. Re-enable CACHE.
Verify that flat mode is enabled.

D4 Test base 512KB memory. Adjust policies and cache

first 8MB. Set stack.

D5 Bootblock code is copied from ROM to lower system

memory and control is given to it. BIOS now executes
out of RAM.

D6 Both key sequence and OEM specific method is

checked to determine if BIOS recovery is forced. Main
BIOS checksum is tested. If BIOS recovery is
necessary, control flows to checkpoint E0. See
Bootblock Recovery Code Checkpoints section of
document for more information.

D7 Restore CPUID value back into register. The

Bootblock-Runtime interface module is moved to
system memory and control is given to it. Determine
whether to execute serial flash.

D8 The Runtime module is uncompressed into memory.

CPUID information is stored in memory.

D9 Store the Uncompressed pointer for future use in PMM.

Copying Main BIOS into memory. Leaves all RAM
below 1MB Read-Write including E000 and F000
shadow areas but closing SMRAM.

DA Restore CPUID value back into register. Give control to

BIOS POST (ExecutePOSTKernel). See POST Code
Checkpoints section of document for more

information.
E1-E8 EC­EE

74

OEM memory detection/configuration error. This range

is reserved for chipset vendors & system manufacturers.

Description

Appendix B: Flash BIOS

Table B-2 Bootblock Recovery Code Checkpoints

The Bootblock recovery code gets control when the BIOS determines
that a BIOS recovery needs to occur because the user has forced the
update or the BIOS checksum is corrupt. The following table describes
the type of checkpoints that may occur during the Bootblock recovery
portion of the BIOS:

Checkpoint

Code

E0 Initialize the floppy controller in the super I/O. Some

interrupt vectors are initialized. DMA controller is

initialized. 8259 interrupt controller is initialized. L1

cache is enabled.
E9 Set up floppy controller and data. Attempt to read from

floppy.
EA Enable ATAPI hardware. Attempt to read from ARMD

and ATAPI CDROM.
EB Disable ATAPI hardware. Jump back to checkpoint E9.
EF Read error occurred on media. Jump back to checkpoint

EB.
F0 Search for pre-defined recovery file name in root

directory.
F1 Recovery file not found.
F2 Start reading FAT table and analyze FAT to find the

clusters occupied by the recovery file.
E0 Initialize the floppy controller in the super I/O. Some

interrupt vectors are initialized. DMA controller is

initialized. 8259 interrupt controller is initialized. L1

cache is enabled.
E9 Set up floppy controller and data. Attempt to read from

floppy.
EA Enable ATAPI hardware. Attempt to read from ARMD

and ATAPI CDROM.
EB Disable ATAPI hardware. Jump back to checkpoint E9.
EF Read error occurred on media. Jump back to checkpoint

EB.
F0 Search for pre-defined recovery file name in root

directory.
F1 Recovery file not found.
F2 Start reading FAT table and analyze FAT to find the

clusters occupied by the recovery file.

Description

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Captor M – Installation Guide

Table B-3 POST Code Checkpoints

The POST code checkpoints are the largest set of checkpoints during
the BIOS pre-boot process. The following table describes the type of
checkpoints that may occur during the POST portion of the BIOS:

Checkpoint

Code

03 Disable NMI, Parity, video for EGA, and DMA

controllers. Initialize BIOS, POST, Runtime data area.

Also initialize BIOS modules on POST entry and GPNV

area. Initialized CMOS as mentioned in the Kernel

Variable "wCMOSFlags."
04 Check CMOS diagnostic byte to determine if battery

power is OK and CMOS checksum is OK. Verify

CMOS checksum manually by reading storage area. If

the CMOS checksum is bad, update CMOS with power-

on default values and clear passwords. Initialize status

register A.

Initializes data variables that are based on CMOS setup

questions. Initializes both the 8259 compatible PICs in

the system
05 Initializes the interrupt controlling hardware (generally

PIC) and interrupt vector table.
06 Do R/W test to CH-2 count reg. Initialize CH-0 as

system timer. Install the POSTINT1Ch handler. Enable

IRQ-0 in PIC for system timer interrupt.

Traps INT1Ch vector to "POSTINT1ChHandlerBlock."
C0 Early CPU Init Start -- Disable Cache - Init Local APIC
C1 Set up boot strap processor Information
C2 Set up boot strap processor for POST
C5 Enumerate and set up application processors
C6 Re-enable cache for boot strap processor
C7 Early CPU Init Exit
0A Initializes the 8042 compatible Key Board Controller.
0B Detects the presence of PS/2 mouse.
0C Detects the presence of Keyboard in KBC port.
0E Testing and initialization of different Input Devices.

Also, update the Kernel Variables.

Traps the INT09h vector, so that the POST INT09h

handler gets control for IRQ1. Uncompress all available

language, BIOS logo, and Silent logo modules.
13 Early POST initialization of chipset registers.
24 Uncompress and initialize any platform specific BIOS

Description

76

Appendix B: Flash BIOS

modules.
30 Initialize System Management Interrupt.
2A Initializes different devices through DIM.

See DIM Code Checkpoints section of document for

more information.
2C Initializes different devices. Detects and initializes the

video adapter installed in the system that have optional

ROMs.
2E Initializes all the output devices.
31 Allocate memory for ADM module and uncompress it.

Give control to ADM module for initialization. Initialize

language and font modules for ADM. Activate ADM

module.
33 Initializes the silent boot module. Set the window for

displaying text information.
37 Displaying sign-on message, CPU information, setup

key message, and any OEM specific information.
38 Initializes different devices through DIM. See DIM

Code Checkpoints section of document for more

information.
39 Initializes DMAC-1 & DMAC-2.
3A Initialize RTC date/time.
3B Test for total memory installed in the system. Also,

Check for DEL or ESC keys to limit memory test.

Display total memory in the system.
3C Mid POST initialization of chipset registers.
40 Detect different devices (Parallel ports, serial ports, and

coprocessor in CPU, … etc.) successfully installed in

the system and update the BDA, EBDA…etc.
50 Programming the memory hole or any kind of

implementation that needs an adjustment in system

RAM size if needed.
52 Updates CMOS memory size from memory found in

memory test. Allocates memory for Extended BIOS

Data Area from base memory.
60 Initializes NUM-LOCK status and programs the KBD

typematic rate.
75 Initialize Int-13 and prepare for IPL detection.
78 Initializes IPL devices controlled by BIOS and option

ROMs.
7A Initializes remaining option ROMs.
7C Generate and write contents of ESCD in NVRam.
84 Log errors encountered during POST.

77

Captor M – Installation Guide

85 Display errors to the user and gets the user response for

error.
87 Execute BIOS setup if needed / requested.
8C Late POST initialization of chipset registers.
8D Build ACPI tables (if ACPI is supported)
8E Program the peripheral parameters. Enable/Disable

NMI as selected
90 Late POST initialization of system management

interrupt.
A0 Check boot password if installed.
A1 Clean-up work needed before booting to OS.
A2 Takes care of runtime image preparation for different

BIOS modules. Fill the free area in F000h segment with

0FFh. Initializes the Microsoft IRQ Routing Table.

Prepares the runtime language module. Disables the

system configuration display if needed.
A4 Initialize runtime language module.
A7 Displays the system configuration screen if enabled.

Initialize the CPU’s before boot, which includes the

programming of the MTRR’s.
A8 Prepare CPU for OS boot including final MTRR values.
A9 Wait for user input at config display if needed.
AA Uninstall POST INT1Ch vector and INT09h vector.

Deinitializes the ADM module.
AB Prepare BBS for Int 19 boot.
AC End of POST initialization of chipset registers.
B1 Save system context for ACPI.
00 Passes control to OS Loader (typically INT19h).
61-70 OEM POST Error.

Table B-4 DIM Code Checkpoints

The Device Initialization Manager (DIM) gets control at various times
during BIOS POST to initialize different system busses. The following
table describes the main checkpoints where the DIM module is
accessed:

Checkpoint

Code

2A Initialize different buses and perform the following

functions: Reset, Detect, and Disable (function 0); Static

Device Initialization (function 1); Boot Output Device

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Description

Appendix B: Flash BIOS

Initialization (function 2). Function 0 disables all device

nodes, PCI devices, and PnP ISA cards. It also assigns

PCI bus numbers. Function 1 initializes all static devices

that include manual configured onboard peripherals,

memory and I/O decode windows in PCI-PCI bridges,

and noncompliant PCI devices. Static resources are also

reserved. Function 2 searches for and initializes any

PnP, PCI, or AGP video devices.
38 Initialize different buses and perform the following

functions: Boot Input Device Initialization (function 3);

IPL Device Initialization (function 4); General Device

Initialization (function 5). Function 3 searches for and

configures PCI input devices and detects if system has

standard keyboard controller. Function 4 searches for

and configures all PnP and PCI boot devices. Function 5

configures all onboard peripherals that are set to an

automatic configuration and configures all remaining

PnP and PCI devices.

While control is in the different functions, additional checkpoints are
output to port 80h as a word value to identify the routines under
execution. The low byte value indicates the main POST Code
Checkpoint. The high byte is divided into two nibbles and contains two
fields. The details of the high byte of these checkpoints are as follows:

HIGH BYTE XY

The upper nibble 'X' indicates the function number that is being
executed. 'X' can be from 0 to 7.

0 = func#0, disable all devices on the BUS concerned.
1 = func#1, static devices initialization on the BUS concerned.
2 = func#2, output device initialization on the BUS concerned.
3 = func#3, input device initialization on the BUS concerned.
4 = func#4, IPL device initialization on the BUS concerned.
5 = func#5, general device initialization on the BUS
concerned.
6 = func#6, error reporting for the BUS concerned.
7 = func#7, add-on ROM initialization for all BUSes.
8 = func#8, BBS ROM initialization for all BUSes.

The lower nibble 'Y' indicates the BUS on which the different routines
are being executed. 'Y' can be from 0 to 5.

0 = Generic DIM (Device Initialization Manager).

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Captor M – Installation Guide

1 = On-board System devices.
2 = ISA devices.
3 = EISA devices.
4 = ISA PnP devices.
5 = PCI devices.

Table B-5 ACPI Runtime Checkpoints

ACPI checkpoints are displayed when an ACPI capable operating
system either enters or leaves a sleep state. The following table
describes the type of checkpoints that may occur during ACPI sleep or
wake events:

Checkpoint

Code

AC First ASL check point. Indicates the system is running

in ACPI mode.
AA System is running in APIC mode.
01, 02, 03,
04, 05
10, 20, 30,
40, 50

Entering sleep state S1, S2, S3, S4, or S5.

Waking from sleep state S1, S2, S3, S4, or S5.

Description

Critical Error BEEP Codes

The following table describes the beep codes that are used by
AMIBIOS:

Table B-6 AMIBIOS Beep Codes

Number of

Beeps

1 Memory refresh timer error.
2 Parity error
3 Main memory read / write test error.
4 Motherboard timer not operational
5 Processor error
6 Keyboard controller BAT test error.
7 General exception error.
8 Display memory error.
9 ROM checksum error
10 CMOS shutdown register read/write error
11 Cache memory bad

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Description

Appendix C: Communication Devices

Appendix C On-Board

Industrial Devices

The Captor M offers two on-board 10/100 (10/100/1000 optional)
Ethernet controllers (second Ethernet optional), ISA bridge, six serial
ports (one optional RS422/485), watchdog timer and Post Code Display
that will help you on troubleshooting.

Post Code Display

The POST code display is a device implemented on the Captor M to
help on failure diagnostics. A POST code is transmitted by the BIOS
during the POST (Power On Self Test). It is a number that refers to the
state or test condition of a circuit or group of circuits. Knowing the
results of these tests (hence the POST code) can be very important in
debugging a system.

POST Checkpoint Codes

When AMIBIOS8 performs the Power On Self Test, it writes
diagnostic codes checkpoint codes to I/O port 0080h where the POST
code display is connected. Please, refer to Appendix B for POST codes
description.

ISA Bridge

The Captor M features a National Semiconductor PC87200 PCI to ISA
Bridge. The PC87200 Enhanced Integrated PCI-to-ISA bridge works
with an LPC chipset to provide ISA slot support.

The following summarizes the PCI to ISA bridge features:

- 5.0 V tolerant PCI and ISA interfaces.

- Slave mode serialized IRQ support for both quiet and
continuous modes.

- PC/PCI DMA support.

- Supports ISA bus mastering.

- PCI 2.1 compliant 33 MHz bus.

- Supports PCI initiator-to-ISA and ISA master-to-PCI cycle
translations.

- Subtractive agent for unclaimed transactions.

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Captor M – Installation Guide

- Parallel to Serial IRQ conversion including
IRQ3,4,5,6,7,9,10,11,12,14,15.

- Supports 3 ISA slots directly without buffering.

- Slow slew rate on edges.

On-board Ethernet

The Captor M features two 10/100/1000 Ethernet controllers. Ethernet
controller 1 is an Intel 82559ER 10/1000 (or 82551ER), that may
optionally be upgraded to an Intel 82541ER, which is a
10/100/1000Mbps device. The optional Ethernet controller 2 is an Intel
82559ER 10/1000 (or 82551ER), that may optionally be upgraded to an
Intel 82541ER, which is a 10/100/1000Mbps device.

The 82559ER/551ER is a 32-bit PCI controller that features enhanced
scatter-gather bus mastering capabilities, which enable the
82559ER/551ER to perform high-speed data transfers over the PCI bus.
The 82559ER/551ER bus master capabilities enable the component to
process high-level commands and to perform multiple operations,
thereby off-loading communication tasks from the system CPU.

It can operate in either full duplex or half duplex mode. In full duplex
mode it adheres to the IEEE 802.3x Flow Control specification. Half
duplex performance is enhanced by a proprietary collision reduction
mechanism.

The Intel® 82541ER (optional) integrates fourth generation gigabit
MAC design with fully integrated, physical layer circuitry to provide a
standard IEEE 802.3 Ethernet interface for 1000BASE-T,
100BASE_TX, and 10BASE-T applications (802.3, 802.3u, and

802.3ab). The controller is capable of transmitting and receiving data at
rates of 1000 Mbps, 100 Mbps, or 10 Mbps. In addition to managing
MAC and PHY layer functions, the controller provides a 32-bit wide
direct Peripheral Component Interconnect (PCI) 2.3 compliant interface
capable of operating at 33 or 66 MHz.

The 82541ER Architecture is designed for high performance and low
memory latency. Wide internal data paths eliminate performance
bottlenecks by efficiently handling large address and data words. The
82541ER controller includes advanced interrupt handling features to
limit PCI bus traffic and a PCI interface that maximizes efficient bus
usage. The 82541ER uses efficient ring buffer descriptor data

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Appendix C: Communication Devices

structures, with up to 64 packet descriptors cached on chip. A large
64Kbyte onchip packet buffer maintains superior performance as
available PCI bandwidth changes. In addition, using hardware
acceleration, the controller offloads tasks from the host controller, such
as TCP/UDP/IP checksum calculations and TCP segmentation.

Both controllers can be enabled or disabled through the BIOS.

The pin out of Ethernet 1 RJ45 connector J24 can be seen on Table A15
and the pin out of Ethernet 2 RJ45 connector J18 can be seen on Table
A16.

Serial Ports

The Captor M has six fixed RS-232 serial ports (COM1 RS-422/485
optional).

The pin out of COM1 header connector J4 can be seen on Table A9, the
pin out of COM2 header connector J10 can be seen on Table A10, the
pin out of COM3 header connector J3 can be seen on Table A11, the
pin out of COM4 header connector J9 can be seen on Table A12, the
pin out of COM5 header connector J5 can be seen on Table A13 and
the pin out of COM6 header connector J11 can be seen on Table A14.

TIA/EIA-232

RS is the abbreviation for recommended standard. Usually, it is based
on or is identical to other standards, e.g., EIA/TIA-232-F. TIA/EIA­232, previously known as RS-232 was developed in the 1960’s to
interconnect layers of the interface (ITU–T V.11), but also the pignut of
the appropriate connectors (25-pin D-type or 9-pin DB9S) (ISO 2210)
and the protocol (ISSUED-T V.24). The interface standard specifies
also handshake and control lines in addition to the 2 unidirectional
receive data line (RD) and transmit data line (TD). The control lines
data carrier detect (DCD), data set ready (DSR), request to send (RTS),
clear to send (CTS), data terminal ready (DTR), and the ring indicator
(RI) might be used, but do not necessarily have to be (for example, the
PC-serial-mouse utilizes only RI, TD, RD and GND). Although the
standard supports only low speed data rates and line length of
approximately 20 m maximum, it is still widely used. This is due to its
simplicity and low cost.

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Captor M – Installation Guide

Electrical

TIA/EIA-232 has high signal amplitudes of ±(5 V to 15 V) at the driver
output. The triggering of the receiver depends on the sign of the input
voltage: that is, it senses whether the input is above 3 V or less than –3
V. The line length is limited by the allowable capacitive load of less
than 2500 pF. This results in a line length of approximately 20 m. The
maximum slope of the signal is limited to 30 V/ms. The intention here
is to limit any reflections that can occur to the rise-and fall-times of the
signal. Therefore, transmission line theory does not need to be applied,
so no impedance matching and termination measures are necessary.

Do not connect termination resistor when operating in RS-232 mode.

Protocol

Different from other purely electrical-layer-standards, TIA/EIA-232
defines not only the physical layer of the interface (ITU-T V.11), but
also the pinout of the appropriate connectors (25-pin D-type or 9-pin
DB9S) (ISO 2210) and the protocol (ITU-T V.24). The interface
standard specifies also handshake and control lines in addition to the 2
unidirectional receive data line (RD) and transmit data line (TD). The
control lines might be used, but do not necessarily have to be.

RS-232 is Single-Ended Point-to-point Transmission

Single-Ended, Point-to-Point

Single-ended transmission is performed on one signal line, and the
logical state is interpreted with respect to ground. For simple, low­speed interfaces, a common ground return path is sufficient; for more
advanced interfaces featuring higher speeds and heavier loads, a single
return path for each signaling line (twisted pair cable) is recommended.
The figure below shows the electrical schematic diagram of a single­ended transmission system.

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Appendix C: Communication Devices

Advantages of Single-Ended Transmission

The advantages of single-ended transmission are simplicity and low
cost of implementation. A single-ended system requires only one line
per signal. It is therefore ideal for cabling, and connector costs are more
important than the data transfer rate, e.g. PC, parallel printer port or
serial communication with many handshaking lines, e.g. EIA-232.
Cabling costs can be kept to a minimum with short distance
communication, depending on data throughput, requiring no more than
a low cost ribbon cable. For longer distances and/or noisy
environments, shielding and additional ground lines are essential.
Twisted pair cables are recommended for line lengths of more than 1
meter.

TIA/EIA-422

TIA/EIA-422 (RS-422) allows a multi-drop interconnection of one
driver, transmitting unidirectionally to up to 10 receivers. Although it is
not capable of bidirectional transfer, it is still applicable and used for
talker-audience scenarios.

Electrical

TIA/EIA-422 (ITU-T V.11) is comparable to TIA/EIA-485. It is
limited to unidirectional data traffic and is terminated only at the line-
end opposite to the driver. The maximum line length is 1200m, the
maximum data rate is determined by the signal rise- and fall-times at
the receiver’s side (requirement: <10% of bit duration). TIA/EIA-422
allows up to ten receivers (input impedance of 4 kΩ attached to one
driver. The maximum load is limited to 80 Ω. Although any TIA/EIA­485 transceiver can be used in a TIA/EIA-422 system, dedicated
TIA/EIA-422 circuits are not feasible for TIA/EIA-485, due to short
circuit current limitations. The TIA/EIA-422 standard requires only
short circuit limitation to 150 mA to ground, while TIA/EIA-485
additionally has to limit short circuit currents to 250 mA from the bus

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Captor M – Installation Guide

pins to –7 V and 12 V to address malfunctions in combination with
ground shifts.

RS-422 is terminated only at the line-end opposite to the driver
even if there is only one receiver.

Protocol

Not applicable/none specified.

RS-422 is Differential and may be either Point-to-Point or Multi­Drop Connected

86

Differential, Point-to-Point

Differential, Multi-Drop

Appendix C: Communication Devices

Differential Transmission

For balanced or differential transmission, a pair of signal lines is
necessary for each channel. On one line, a true signal is transmitted,
while on the second one, the inverted signal is transmitted. The receiver
detects voltage difference between the inputs and switches the output
depending on which input line is more positive. As shown below, there
is additionally a ground return path.

Balanced interface circuits consist of a generator with differential
outputs and a receiver with differential inputs. Better noise
performance stems from the fact that noise is coupled into both wires of
the signal pair in much the same way and is common to both signals.
Due to the common mode rejection capability of a differential
amplifier, this noise will be rejected. Additionally, since the signal line
emits the opposite signal like the adjacent signal return line, the
emissions cancel each other. This is true in any case for crosstalk from
and to neighboring signal lines. It is also true for noise from other
sources as long as the common mode voltage does not go beyond the
common mode range of the receiver. Since ground noise is also
common to both signals, the receiver rejects this noise as well. The
twisted pair cable used in these interfaces in combination with a correct
line termination—to avoid line reflections—allows very high data rates
and a cable length of up to 1200 m.

Advantages of Differential Transmission

Differential data transmission schemes are less susceptible to common­mode noise than single-ended schemes. Because this kind of
transmission uses two wires with opposite current and voltage swings
compared to only one wire for single-ended, any external noise is
coupled onto the two wires as a common mode voltage and is rejected
by the receivers. This two-wire approach with opposite current and
voltage swings also radiates less electro-magnetic interference (EMI)
noise than single-ended signals due to the canceling of magnetic fields.

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Captor M – Installation Guide

TIA/EIA-485

Historically, TIA/EIA-422 was on the market before TIA/EIA-485.
Due to the lack of bi-directional capabilities, a new standard adding this
feature was created: TIA/EIA-485 . The standard (TIA/EIA-485-A or
ISO/IEC 8284) defines the electrical characteristics of the
interconnection, including driver, line, and receiver. It allows data rates
in the range of 35 Mbps and above and line lengths of up to 1200 m. Of
course both limits can not be reached at the same time. Furthermore,
recommendations are given regarding wiring and termination. The
specification does not give any advice on the connector or any protocol
requirements.

Electrical

TIA/EIA-485 describes a half-duplex, differential transmission on
cable lengths of up to 1200 m and at data rates of typically up to 35
Mbps (requirement similar to TIA/EIA-422, but tr<30% of the bit
duration, there are also faster devices available, suited for higher rates
under certain load-conditions). The standard allows a maximum of 32
unit loads of 12 kΩ, equal to 32 standard nodes or even higher count
with increased input impedance. The maximum total load should not
drop below 52 Ω. The common-mode voltage levels on the bus have to
maintain between –7 V and 12 V. The receivers have to be capable to
detect a differential input signal as low as 200 mV.

RS-485 is terminated at both sides of the common bus, even if only
two stations are connected to the backbone.

Protocol

Not applicable/none specified; exceptions: SCSI systems and the DIN­Bus DIN66348.

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Appendix C: Communication Devices

RS-485 is Differential and Multi-Point Connected

Differential Transmission

Please, read the Differential Transmission explanation in the previous
RS-422 section.

Termination Resistors

Follow instructions in the previous RS-422 and RS-485 sections. The
termination resistors available are rated to 120Ω.

Ground Connections

All 422- and 485-compliant system configurations shown up to this
point do not have incorporated signal-return paths to ground.
Obviously, having a solid ground connection so that both receivers and
drivers can talk error free is imperative. The figure below shows how to
make this connection and recommends adding some resistance between
logic and chassis ground to avoid excess ground-loop currents. Logic
ground does not have any resistance in its path from the driver or
receiver. A potential problem might exist, especially during transients,
when a high-voltage potential between the remote grounds could
develop. Therefore, some resistance between them is recommended.

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Captor M – Installation Guide

Watchdog Timer

The Watchdog Timer (WDT) is optional.

90