ETX-945 User Manual
High-Performance ETX 3.0 Compliant Computer-on-Modules
Revision
1.00
Date
Comment
Initial Release
Copyright 2009
Diamond Systems Corporation
1255 Terra Bella Ave.
Mountain View, CA 94043 USA
Tel 1-650-810-2500
Fax 1-650-810-2525
IMPORTANT SAFE-HANDLING INFORMATION
WARNING: ESD-Sensitive Electronic Equipment!
Observe ESD-safe handling procedures when working with this product.
Always use this product in a properly grounded work area and wear
appropriate ESD-preventive clothing and/or accessories.
Always store this product in ESD-protective packaging when not in use.
Safe Handling Precautions
The ETX-945 contains numerous I/O connectors that connect to sensitive electronic components. This creates
many opportunities for accidental damage during handling, installation and connection to other equipment. The
list here describes common causes of failure found on boards returned to Diamond Systems for repair. This
information is provided as a source of advice to help you prevent damaging your Diamond (or any vendor’s)
embedded computer boards.
ESD damage – This type of damage is almost impossible to detect, because there is no visual sign of failure or
damage. The symptom is that the board simply stops working, because some component becomes defective.
Usually the failure can be identified and the chip can be replaced. To prevent ESD damage, always follow proper
ESD-prevention practices when handling computer boards.
Damage during handling or storage – On some boards we have noticed physical damage from mishandling. A
common observation is that a screwdriver slipped while installing the board, causing a gouge in the PCB surface
and cutting signal traces or damaging components.
Another common observation is damaged board corners, indicating the board was dropped. This may or may not
cause damage to the circuitry, depending on what is near the corner. Most of our boards are designed with at
least 25 mils clearance between the board edge and any component pad, and ground / power planes are at least
20 mils from the edge to avoid possible shorting from this type of damage. However these design rules are not
sufficient to prevent damage in all situations.
A third cause of failure is when a metal screwdriver tip slips, or a screw drops onto the board while it is powered
on, causing a short between a power pin and a signal pin on a component. This can cause overvoltage / power
supply problems described below. To avoid this type of failure, only perform assembly operations when the
system is powered off.
Sometimes boards are stored in racks with slots that grip the edge of the board. This is a common practice for
board manufacturers. However our boards are generally very dense, and if the board has components very close
to the board edge, they can be damaged or even knocked off the board when the board tilts back in the rack.
Diamond recommends that all our boards be stored only in individual ESD-safe packaging. If multiple boards are
stored together, they should be contained in bins with dividers between boards. Do not pile boards on top of each
other or cram too many boards into a small location. This can cause damage to connector pins or fragile
components.
Power supply wired backwards – Our power supplies and boards are not designed to withstand a reverse
power supply connection. This will destroy each IC that is connected to the power supply. In this case the board
will most likely will be unrepairable and must be replaced. A chip destroyed by reverse power or by excessive
power will often have a visible hole on the top or show some deformation on the top surface due to vaporization
inside the package. Check twice before applying power!
ETX-945 User Manual 1.00
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1. INTRODUCTION
The ETX-945 is a highly integrated computer-on-module (COM) available with a range of high performance Intel®
CoreTM 2 Duo, Core Duo, and CeleronTM M processors. The module provides an SO-DIMM socket for up to 2GB
of DDR2 DRAM, and provides interface controllers for high-resolution CRT and LVDS-interfaced displays,
10/100Mbps Ethernet, SATA and IDE storage devices, USB 2.0, audio, serial, parallel, and PS/2 ports.
Additionally, the ETX-945 provides a high degree of system expansion flexibility via the presence of both 32-bit
PCI and 16-bit ISA expansion buses on its ETX 3.0 compliant baseboard interface connectors.
1.1 Features
Processor options:
The following processors, when included, are soldered onto the board:
Intel Core 2 Duo 667MHz FSB and 4MB L2 Cache, LV
Intel Core 2 Duo 533 MHz FSB and 2MB L2 Cache, ULV
Intel Core Duo 667 MHz FSB and 2MB L2 Cache, LV
Intel Core Duo 533 MHz FSB and 2MB L2 Cache, ULV
Intel Celeron 533 MHz FSB and 1MB L2 Cache, M ULV
The following processor, when included, is placed in a socket:
Intel Core 2 Duo 667MHz FSB and 4MB L2 Cache
Chipset:
Intel 945GME and Intel ICH7M
RAM:
200-pin SO-DIMM socket
Supports up to 2GB DDR2 SDRAM (400/533/667MHz)
Graphics:
Based on Intel GMA950 graphics core
VGA CRT interface; up to 2048x1536 resolution
Dual channel 24-bit LVDS; provides LCD backlight control signals
TV output
Supports dual independent displays
Audio:
Realtek ALC655 AC’97 CODEC
Mic in, line in/out signals
IDE interface:
1 UltraATA 100/66/33 interface
Supports two devices (Master/Slave)
Usable in PIO or UDMA mode
SATA interfaces:
2 SATA ports, supporting one device each
Up to 150MB/s data transfer rates
Connectors directly on ETX COM module
Floppy/parallel port:
Shared interface
Parallel port supports SPP/EPP/ECP modes
Ethernet interface:
1 10/100Base-T port
Based on Intel 82562
Serial ports:
2 16550-compatible ports
Logic-level signaling
ETX-945 User Manual 1.00
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Keyboard/mouse:
Standard PS/2 keyboard/mouse ports
USB keyboard/mouse supported
USB:
4 USB 2.0 ports
Other:
SMbus, I2C, IrDA serial interfaces
PC speaker interface
Watchdog timer; supports 255-level reset
Dual system expansion buses:
16-bit ISA bus
32-bit PCI bus; supports 4 PCI masters
Size:
ETX 3.0 compliant form-factor (physical and electrical) *
4.5 x 3.7 inches (95mm x 114mm)
Input voltage:
System power: +5V DC +/-5%
Real-time clock backup: +2.0 to 3.6V DC
Power consumption: CPU dependent; see table of models, below
Operating environment:
-40 o to +85o C operating temperature
0 to 90% operating humidity (non-condensing)
BIOS:
Phoenix-Award PnP flash BIOS
* Note: The ETX 3.0 specification is available for download from the ETX Industrial
1.2 ETX-945 Models
Board Power
CPU
type
L2
Cache
CPU
TDP
Model
CPU
FSB
Idle
12W
12W
12W
12W
12W
12W
Loaded
ETX-945-T7400
ETX-945-L7400
ETX-945-U7500
ETX-945-L2400
ETX-945-U2500
ETX-945-CM423
2.16GHz Core 2 Duo
socketed 667MHz
4MB
4MB
2MB
2MB
2MB
1MB
34
17
10
15
9
41W
24W
17W
22W
16W
13W
1.5GHz Core 2 Duo LV
soldered
667MHz
533MHz
667MHz
533MHz
533MHz
1.06GHz Core 2 Duo ULV soldered
1.66GHz Core Duo LV
1.2GHz CoreDuo ULV
1.06GHz Celeron M ULV
soldered
soldered
soldered
5.5
ETX-945 User Manual 1.00
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2. FUNCTIONAL OVERVIEW
2.1 Block Diagram
Figure 1 shows the ETX-945 COM’s functional blocks, ETX bus, and peripheral interface signals.
Figure 1: Functional Block Diagram
ETX-945 User Manual 1.00
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2.2 Board Dimensions, Mounting Holes, and Connectors
The two diagrams below show the mechanical dimensions of the ETX-945’s board outline and five mounting
holes, as well as the position of all connectors on both the top and bottom sides of the board.
Figure 2: Board Layout – Top
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2.3 Bus and Interface Connector Summary
The ETX-945 has six interface connectors, as listed in the tables below. These connectors are defined in
accordance with the ETX 3.0 Computer-on-Module (COM) Specification. Signal functions relating to each of the
ETX-945’s interface connectors are discussed in greater detail in Section 4 of this document.
2.4 ETX Bus Connectors
Connector
Location Pins
Function
ETX1
ETX2
Bottom
Bottom
100
100
PCI bus, USB ports, audio interface, serial IRQ
ISA bus
VGA, LCD (LVDS), TV video, serial ports, PS2 keyboard
and mouse, parallel port, floppy interface
ETX3
ETX4
Bottom
Bottom
100
100
IDE ports, Ethernet, power supply control, speaker, RTC
(real time clock), backup battery input, I2C bus, SM bus
2.5 Other Interface Connectors
Connector
Location Pins
Function
SATA1
SATA2
Top
Top
7
7
Serial ATA channel 1
Serial ATA channel 2
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3. GETTING STARTED
This section of the ETX-945 User Manual covers basic hardware setup, power connection, system boot-up, and
initial software configuration. First-time ETX-945 users normally receive the product as part of one of Diamond’s
Development Kits, which provide everything needed to ensure rapid application development.
Important Safe-Handling Information
WARNING: ESD-Sensitive Electronic Equipment!
Observe ESD-safe handling procedures when working
with this product.
Always use this product in a properly grounded work area
and wear appropriate ESD-preventive clothing and/or
accessories.
Always store this product in ESD-protective packaging
when not in use.
details.
ETX-945 User Manual 1.00
Page 10
3.1 ETX Development Kits
To facilitate evaluation and development, the ETX-945 is normally supplied pre-integrated into one of Diamond’s
ETX development kits (pictured below). This approach increases project efficiency and reduces risks by providing
a known good environment for rapid application development.
Diamond’s ETX development kits feature baseboards with I/O connectors for quick and easy access to nearly all
system interfaces, a CompactFlash socket, and modular PC/104-Plus expansion. The kits – which include both
generic models and application-oriented ETX baseboards in various form-factors – extend the ETX-945’s
functionality by adding serial and LAN ports, RS-232/422/485 signal buffering, CompactFlash sockets, industry-
leading data acquisition I/O functions, and more. Additionally, the kits come with SO-DIMM memory, an extensive
set of interface cables, drivers for Linux and Windows operation, and full documentation.
Two examples appear below.
ETX form-factor development kit: Matches
the footprint of the ETX-945 and provides
connectors for system I/O, CompactFlash,
PC/104-Plus expansion, two additional serial
ports, RS-232/422/485 buffering, a digital I/O
port, and a second Ethernet LAN interface.
EPIC form-factor development kit: Provides
connectors for system I/O, CompactFlash,
PC/104-Plus expansion, four additional serial
ports, RS-232/422/485 buffering, a second
Ethernet port, a 5V/7-28V DC-to-DC power
supply, and an industry-leading data acquisition
subsystem.
3.2 Configuring the Hardware
Assuming you are using one of Diamond’s baseboards and heat-spreaders or heatsinks with the ETX-945,
prepare the hardware as follows:
If the SO-DIMM memory module is not already installed, carefully insert it into the socket provided on the top-
side of the ETX-945 module. Refer to the specifications in the introduction of this manual for memory capacity
and speed requirements.
Secure the heat-spreader (or heatsink) to the top-side of the ETX-945 module using the single short screw
provided with the heat-spreader (or heatsink), taking care to align the four corner mounting holes of the heat-
spreader (or heatsink) with the four corresponding standoffs on the top of the ETX-945. Note: This mounting
screw attaches to the heat-spreader (or heatsink) via a hole near the middle of ETX-945 module, and screws
in from the bottom-side of the ETX module.
ETX-945 User Manual 1.00
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Using the four long screws provided with the heat-spreader (or heatsink), secure the heat-spreader (or
heatsink) to the corresponding standoffs located in the four corners of the top of the ETX-945 module. If the
ETX module is to being installed in an enclosure, align the heat-spreader’s (or heatsink’s) corner mounting
holes with corresponding hole-pattern on the enclosure before inserting and tightening the four mounting
screws. Depending on the thickness of the enclosure or chassis material, slightly longer screws may be
required.
Connect the baseboard to a keyboard, monitor, mouse, mass storage device, other desired peripherals, and a
source of DC power. Refer to the baseboard’s User Manual for interface cabling considerations.
Connect the baseboard to a suitable source of DC power, as described in its User Manual.
3.3 Booting the System
Power-up the VGA video monitor. Then power-up the system power supply. The ETX-945 module should begin
its boot-up sequence immediately, as evidenced by BIOS messages on the connected VGA display. You can run
the BIOS Setup utility and proceed to install an operating system on the boot drive just as you would on a normal
desktop PC.
3.4 BIOS Setup Utility
The Award BIOS provides a Setup utility for specifying system configuration and settings. Pressing the <Del> key
shortly after power is applied to the ETX-945 launches the BIOS Setup utility. Watch for the following message:
Press <DEL> to Enter Setup
The BIOS Setup utility’s main menu provides access to the following configuration and settings pages, along with
several exit options. Setup categories include the following:
Standard CMOS features
Advanced BIOS features
Advanced chipset features
Integrated peripherals
PnP/PCI configuration
These are discussed briefly below.
3.4.1 Standard CMOS Features
The Standard CMOS Features function includes settings for RTC date/time initialization, IDE and floppy drive
detection and configuration, default video mode, and boot error handling options. This function should be re-run if
the system’s configuration is changed, the onboard battery fails, or the configuration stored in CMOS memory is
lost or corrupt.
3.4.2 Advanced BIOS Features
The Advanced BIOS Features function provides configuration options for boot device priority, Hyper-Threading
Technology, quick POST (power-on self test), and several other system parameters.
One key configuration setting is the designation of “First” and “Second” boot devices. This directs the BIOS to
scan for a bootable operating system in two locations, which can be floppy, CD-ROM, hard drive, USB devices, or
LAN devices. Additionally, you can specify an alternative location for the BIOS to scan, in case these are not
found or do not contain a bootable OS.
Other settings available from this Setup page include boot-up NumLock status, a security password option, and
selection of the system’s APIC (Advanced Programmable Interrupt Controller) mode.
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3.4.3 Advanced Chipset Features
From this setup page you can configure the size of the video controller’s on-chip frame buffer, set up the
controller’s DVMT (Dynamic Video Memory Technology) mode and memory size, and specify what type of display
will be used as the system’s boot-up console output device.
DVMT is an advanced video controller function that dynamically allocates system memory to be used as video
memory in order to efficiently use of available resources to maximize graphics performance. The DVMT-related
BIOS settings configure the behavior of the DVMT function, including how much system memory is made
available for video memory purposes.
The default display setting allows selection among CRT, LCD, CRT plus LCD (default), LVDS, TV out, or CRT
plus LVDS devices. Other settings specify the resolution of devices connected to the LCD or TV output ports. The
resolutions supported in each mode are listed below.
Display Interface Port
Resolutions Supported
CRT port
LCD port
Up to 2048 x 1536 resolution
640x480, 800x600, 1024x768, 1280x1024,
1400x1050, 1600x1200, 1280x768, 1680x1050,
1920x1200, 1204x678 (24-bit)
TV output
NTSC, PAL
3.4.4 Integrated Peripherals
This Setup section offers the ability to configure various onboard functions and peripheral controllers, including
enable/disable, mode, and other options for the board’s USB, audio, IDE, Serial ATA, floppy controller, serial, IR,
and parallel ports.
A few of the available options include:
Mode controls for faster IDE data transfer, including 33MB/sec Ultra DMA33 feature
Onboard serial port mode, handshake, address, and interrupt channel selection
USB controller
Parallel port mode selection among SPP, EPP, ECP, ECP+EPP, or “normal”, plus several settings
relating to the EPP and ECP modes
3.4.5 Power Management Setup
Here, you can specify a host of options that regulate how the board’s power management features behave.
Included are options for enabling/disabling the board’s ACPI (Advanced Configuration and Power Interface)
capabilities, and specifying the degree and behavior of power management relative to the system’s mass storage
devices and display.
Additionally, this section of Setup provides several options for automatically powering up the system or resuming
from a suspended state. These include:
Power-up automatically following unexpected power loss
Resume operation based on modem or LAN connection
Resume operation based on RTC alarm
Resume operation following one of several time intervals
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3.4.6 PnP/PCI Configuration
This section of Setup provides options for configuration of devices connected to the ETX-945’s PCI bus, including
the choice between automatic “plug-and-play” (PnP) configuration of IRQ and DMA channel settings. If PnP is
disabled, you can specific desired IRQ and DMA channels for PCI devices here.
3.4.7 Other Settings and Utilities
A few additional status and control functions are available from Setup’s main menu. These include:
CPU temperature status
CPU cooling fan status
CPU voltage status
Reload default BIOS settings
Set system boot password
Exit Setup with or without saving changes
3.5 Operating System Drivers
Drivers for Windows XP and Linux 2.6, if required, are included on the Software and Documentation CD that is
provided along with the ETX-945 or in its Development Kit. To locate the ETX-945 module’s software drivers on
the CD, view the index.html file in the CD’s root directory, locate “Computer-on-Modules,” and then click on “ETX-
3.6 BIOS Beep Code List
Beep Sound
Message
1 short
System is booting normally
CMOS setting error
2 short
1 long + 1 short
1 long + 2 short
1 long + 3 short
1 long + 9 short
long (continuous)
short (continuous)
DRAM error
Display card or monitor connected error
Keyboard error
ROM error
DRAM not inserted correctly
Power supply problem
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4. INTERFACE CONNECTOR DETAILS
This section describes the functions available on all of the ETX-945’s bus and I/O interface connectors. The ETX
3.0 specification, which provides more detail regarding the signals present on the ETX1, ETX2, ETX3, and ETX4
connectors, is available from the ETX Industrial Group’s website (http://www.etx-ig.de/specs/specs.php). Also
available from that site is the latest ETX Design Guide, which provides further details on the ETX connector signal
functions and interface considerations. Several other relevant specifications are referenced below.
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4.1 ETX1 Connector
The 100-pin, high-density ETX1 connector implements the board’s PCI bus, USB, and audio signals, as indicated
in the table below. Further information regarding each of these signal groups follows the table. (Note: Pins
designated “RESERVED” should be left unconnected.)
GND
PCICLK3
GND
1
2
GND
VCC
PAR
51
53
55
57
59
61
63
65
67
69
71
73
75
77
79
81
83
85
87
89
91
93
95
97
99
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
VCC
3
4
PCICLK4
GND
SERR#
RESERVED
USB2-
DEVSEL#
USB3-
STOP#
USB2+
GND
5
6
GPERR#
PME#
LOCK#
TRDY#
IRDY#
FRAME#
GND
PCICLK1
REQ3#
GNT2#
REQ2#
REQ1#
GNT0#
VCC
7
8
PCICLK2
GNT3#
3V
9
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
GNT1#
3V
RESERVED
VCC
AD16
CBE2#
USB3+
AD18
SERIRQ
AD0
REQ0#
3V
AD17
AD19
AD1
AD2
AD20
USB0-
AD21
AD4
AD3
AD22
AD6
AD5
AD23
USB1-
CBE3#
VCC
CBE0#
AD8
AD7
AD24
AD9
VCC
GND
GND
AD25
AD26
AD10
AUXAL
MIC
AD28
USB0+
AD29
AD11
AD27
AD12
AUXAR
ASVCC
SNDL
ASGND
SNDR
AD30
USB1+
AD31
AD13
PCIRST#
INTC#
INTA#
GND
AD14
INTD#
INTB#
AD15
CBE1#
100 GND
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4.1.1 PCI bus signals
This set of pins implements the module’s PCI expansion bus. For further information regarding the functions of
the PCI bus signals, refer to the PCI Bus Specification, available from the PCI Special Interest Group
Signal Name
Signal function
Direction
PCICLK1-4
REQ0-3#
GNT0-3#
AD0-31
CBE0-3#
PAR
PCI clock outputs for external PCI devices
Bus Request signals of PCI Masters
Grant signals to PCI Masters
PCI address and data bus signals
PCI Bus command and byte enables
PCI bus parity bit
Out
In
Out
In/Out
In/Out
In
SERR#
GPERR#
PME#
System Error or PCI Clock RUN
Parity Error
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
Out
Power management event
Lock resource signal
Device select
LOCK#
DEVSEL#
TRDY#
IRDY#
Target ready
Initiator ready
STOP#
FRAME#
PCIRST#
INTA#
Stop
Cycle frame
PCI bus reset
PCI interrupt A
In
INTB#
PCI interrupt B
In
INTC#
PCI interrupt C
In
INTD#
PCI interrupt D
In
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4.1.2 USB signals
These pins provide connections to the board’s four USB channels. For further information regarding the functions
of the USB signals listed above, refer to the USB 2.0 Specification, available from the USB Implementers Forum
Signal Name
Signal Function
Direction
USB0+
USB0-
USB Port 0 data +
USB Port 0 data -
In/Out
In/Out
USB1+
USB1-
USB2+
USB2-
USB3+
USB3-
USB Port 1 data +
USB Port 1 data -
USB Port 2 data +
USB Port 2 data -
USB Port 3 data +
USB Port 3 data -
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
4.1.3 Audio interface
These pins carry stereo audio input and output as indicated.
Signal Name
Signal Function
Direction
SNDL
SNDR
Line-level stereo output left; drives a 5k ohm load
Line-level stereo output right; drives a 5k ohm load
Out
Out
AUXAL
AUXAR
MIC
Auxiliary A input left
Auxiliary A input right
Microphone input
In
In
In
ASGND
ASVCC
Analog ground
n/a
n/a
Power supply for audio controller
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4.1.4 Miscellaneous functions
These pins carry power and ground signals and an interrupt request as indicated.
Signal Name
Signal Function
Direction
VCC
GND
3V
+5V ±5% DC power input
Power ground
In
n/a
Out
+3.3V ± 5% supply generated on the ETX module, for
powering external devices (500mA max. external load)
RESERVED
SERIRQ
Do not connect
n/a
In
Serial interrupt request
Caution: Do not connect the 3V pins (pins 12 and 16) of EXT1 to an external power source!
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4.2 ETX2 Connector
The 100-pin, high-density ETX2 connector implements the board’s ISA bus signals, as indicated in the table
below. For further information on the module’s ISA bus signals, refer to the ETX 3.0 Specification.
GND
SD14
SD13
SD12
SD11
SD10
SD9
1
2
GND
VCC
SA6
51
53
55
57
59
61
63
65
67
69
71
73
75
77
79
81
83
85
87
89
91
93
95
97
99
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
VCC
3
4
SD15
IRQ5
5
6
MASTER#
DREQ7
DACK7#
DREQ6
DACK6#
DREQ5
DACK5#
DREQ0
DACK0#
IRQ14
IRQ13
IRQ12
IRQ11
IRQ10
IO16#
SA7
IRQ6
7
8
SA8
IRQ7
9
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
SA9
SYSCLK
REFSH#
DREQ1
DACK1#
GND
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
SA10
SA11
SA12
GND
SD8
MEMW#
MEMR#
LA17
LA18
LA19
LA20
LA21
LA22
LA23
GND
SBHE#
SA0
SA13
SA14
SA15
SA16
SA18
SA19
IOCHRDY
VCC
DREQ3
DACK3#
IOR#
IOW#
SA17
SMEMR#
AEN
VCC
GND
SD0
SMEMW
SD1
M16#
SD2
OSC
SD3
NOWS#
SD4
SA1
BALE
DREQ2
SD5
SA2
TC
IRQ9
SA3
DACK2#
IRQ3
SD6
SD7
SA4
IOCHK#
GND
RSTDRV
SA5
IRQ4
100 GND
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4.3 ETX3 Connector
The 100-pin ETX3 connector implements VGA, LCD (LVDS), TV-video, serial, parallel, floppy, mouse, and
keyboard signals. Because pins 51-100 are shared between floppy and parallel port functions, dual signal
assignments are indicated in the illustration below. Further information regarding each of these signal groups
follows. (Note: Pins designated “RESERVED” should be left unconnected.)
.
GND
R
1
2
GND
LPT/FLP#
VCC
51
53
55
57
59
61
63
65
67
69
71
73
75
77
79
81
83
85
87
89
91
93
95
97
99
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
RESERVED
GND
3
4
B
HSY
5
6
G
STB#/RESERVED
RESERVED
IRRX
AFD#/DENSEL
PD7/RESERVED
ERR#/HDSEL#
PD6/RESERVED
INIT#/DIR#
GND
VSY
7
8
DDCK
DDDA
LCDDO18
LCDDO19
GND
DETECT#
LCDDO16
LCDDO17
GND
9
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
IRTX
RXD2
GND
LCDDO13
LCDDO12
GND
LCDDO15
LCDDO14
GND
RTS2#
DTR2#
DCD2#
DSR2#
CTS2#
TXD2
PD5/RESERVED
SLIN#/STEP#
PD4/DSKCHG#
PD3/RDATA#
PD2/WP#
LCDDO8
LCDDO9
GND
LCDDO11
LCDDO10
GND
PD1/TRK0#
PD0/INDEX#
VCC
LCDDO4
LCDDO5
GND
LCDDO7
LCDDO6
GND
RI2#
VCC
RXD1
ACK#/DRV
BUSY/MOT
PE/WDATA#
SLCT/WGATE#
MSCLK
LCDDO1
LCDDO0
VCC
LCDDO3
LCDDO2
VCC
RTS1#
DTR1#
DCD1#
DSR1#
CTS1#
TXD1
JILI_DAT
JILI_CLK
BIASON
COMP
LTGIO0
BLON#
DIGON
Y
MSDAT
KBCLK
RI1#
KBDAT
SYNC
C
GND
GND
ETX-945 User Manual 1.00
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4.3.1 Analog video output
These pins provide video, clock, and sync information for display on analog CRTs, or on LCD flat panels
that are compatible with analog CRT timings, as indicated.
Signal Name Signal Function
Direction
HSY
VSY
R
Horizontal sync
Vertical sync
Out
Out
Red video output
Green video output
Blue video output
Out
G
Out
B
Out
DDCK
Display Data Channel Clock for DDC interface between
In/Out
the board’s graphics controller and a monitor
DDDA
Display Data Channel Data for DDC interface between
In/Out
the board’s graphics controller and a monitor
4.3.2 TV video output
These pins carry video and timing data for graphical display on a TV device, as indicated.
Signal Name
Signal Function
Direction
SYNC
Composite Sync for SCART PAL TVs with EURO AV compatible
connectors; alternately usable for video-related I/O
In/Out
Y
Luminance for S-Video; alternately Red for RGB video
Chrominance for S-Video; alternately Green for RGB video
Composite Video; alternately Blue for RGB video
Out
Out
Out
C
COMP
ETX-945 User Manual 1.00
Page 22
4.3.3 LCD interface
These pins carry data for graphical display on an LCD panel, as indicated.
Signal Name
Signal Function
Direction
BIASON
DIGON
Controls display contrast voltage
Controls digital power to LCD
Out
Out
BLON#
Controls backlight power to LCD
LVDS channel data 0-19
Out
Out
In
LCD0-LCD19
DETECT#
Panel hot-plug detection
FPDDC_CLK DDC
FPDDC_DAT DDC
DDC signals for flat panel detection and control
DDC signals for flat panel detection and control
Out
In/Out
4.3.4 Serial port interfaces
These pins carry data and control information to/from the board’s two serial ports, as indicated. These pins
provide logic-level signaling, and require external I/O buffering if RS-232, RS-422, or RS-485 signaling is desired.
Signal Name
Signal Function
Direction
DTR1#, DTR2#
RI1#, RI2#
Data terminal ready outputs from serial ports 1 and 2
Ring indicator inputs for serial ports 1 and 2
Out
In
TXD1, TXD2
Transmit data outputs from serial ports 1 and 2
Receive data inputs for serial ports 1 and 2
Out
In
RXD1, RXD2
CTS1#, CTS2#
RTS1#, RTS2#
DCD1#, DCD2#
DSR1#, DSR2#
Clear to send signal inputs for serial ports 1 and 2
Request to send outputs from serial ports 1 and 2
Data carrier detected inputs for serial ports 1 and 2
Data set ready inputs for serial ports 1 and 2
In
Out
In
In
ETX-945 User Manual 1.00
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4.3.5 Keyboard, mouse, and infrared transceiver interfaces
These pins carry data and clock signals associated with the board’s PS2 keyboard and mouse ports. Additionally,
transmit and receive data to/from an IR device, can be routed as indicated.
Signal Name
Signal Function
Direction
KBDAT
KBCLK
Data to/from keyboard.
Clock signal to keyboard
In/Out
Out
MSDAT
MSCLK
IRTX
Data to/from mouse
Clock signal to mouse.
Infrared transmit data
Infrared receive data
In/Out
Out
Out
In
IRRX
4.3.6 Parallel port interface
These pins carry data and control information to/from the board’s bidirectional parallel port, as indicated.
Signal Name
Signal Function
Direction
LPT/FLPY#
STB#
Interface configuration input
Printer data strobe
In
Out
AFD#
PD0-7
ERR#
INIT#
SLIN#
ACK#
BUSY
PE
Automatic line feed request
Out
Bidirectional parallel data bus In/Out
Printer error
In
Printer initialization control
Printer select control
Printer ready to receive data
Printer busy
Out
Out
In
In
Printer out of paper
Printer power on
In
SLCT
In
Note: These pins are shared with the board’s floppy drive controller function, under control of the
LPT/FLPY# input signal. When that signal is left unconnected or held high, the port is placed in
parallel-port mode.
ETX-945 User Manual 1.00
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4.3.7 Floppy drive interface
These pins carry data and control information to/from the board’s floppy drive controller, as indicated.
Signal Name
Signal Function
Direction
LPT/FLPY#
RESERVED
Interface configuration input
Do not connect
In
n/a
DENSEL
INDEX#
TRK0#
WP#
Diskette data density select
Index hole indicator
Out
In
Track 0 indicator
In
Write-protect indicator
Read data from drive
Drive door opened indicator
Head select 0/1 control
Step head step direction control
Step pulse control
In
RDATA#
DSKCHG#
HDSEL#
DIR#
In
In
Out
Out
Out
Out
Out
Out
Out
STEP#
DRV
Drive select control
MOT#
Drive motor activation control
Write data to drive
WDATA#
WGATE#
Write enable control
Note: These pins are shared with the board’s bidirectional parallel port function, under control of
the LPT/FLPY# input signal. When that signal is left unconnected or held high, the port is placed
in parallel-port mode.
ETX-945 User Manual 1.00
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4.3.8 Miscellaneous functions
These pins carry power and ground signals and a GPIO signal, as indicated.
Signal Name Signal Function
Direction
VCC
GND
+5V ±5% DC power input
In
Power ground
In/Out
RESERVED
LTGIO0
Do not connect
General purpose I/O
n/a
In/Out
ETX-945 User Manual 1.00
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4.4 ETX4 Connector
The 100-pin ETX4 connector implements the board’s IDE, Ethernet, and a number of other signals, as indicated
in the table below. Further information regarding each of these signal groups follows the table.
GND
5V_SB
1
2
GND
SIDE_IOW#
SIDE_DRQ
SIDE_D15
SIDE_D0
SIDE_D14
SIDE_D1
SIDE_D13
GND
51
53
55
57
59
61
63
65
67
69
71
73
75
77
79
81
83
85
87
89
91
93
95
97
99
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
PIDE_IOR#
PIDE_IOW#
PIDE_DRQ
PIDE_D15
PIDE_D0
PIDE_D14
PIDE_D1
GND
3
4
PWGIN
PS_ON#
PWRBTN#
KBINH#
5
6
SPEAKER
BATT
7
8
9
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
LILED#
RSMRST#
ROMKBCS#
EXT_PRG
VCC
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
ACTLED#
SPEEDLED#
I2CLK
VCC
SIDE_D2
SIDE_D12
SIDE_D3
SIDE_D11
SIDE_D4
SIDE_D10
SIDE_D5
VCC
PIDE_D13
PIDE_D2
PIDE_D12
PIDE_D3
PIDE_D11
PIDE_D4
PIDE_D10
VCC
OVCR#
GPCS#
EXTSMI#
SMBCLK
SIDE_CS3#
SIDE_CS1#
SIDE_A2
SIDE_A0
GND
I2DAT
SMBDATA
SMBALRT#
DASP_S
PIDE_CS3#
PIDE_CS1#
GND
SIDE_D9
SIDE_D6
SIDE_D8
GPE2#
PIDE_D5
PIDE_D9
PIDE_D6
CBLID_P#
PIDE_D8
SIDE_D7
PIDE_D7
HDRST#
PDIAG_S
SIDE_A1
SIDE_INTRQ
BATLOW#
SIDE_AK#
SIDE_RDY
SIDE_IOR#
VCC
PIDE_A2
PIDE_A0
PIDE_A1
GPE1#
RXD#
PIDE_INTRQ
PIDE_AK#
PIDE_RDY
VCC
RXD
TXD#
TXD
GND
100 GND
ETX-945 User Manual 1.00
Page 27
4.4.1 IDE interfaces
These pins carry data and control information to/from the board’s IDE drive controller, as indicated.
Signal Name
Signal Function
Direction
PIDE_D0-15
PIDE_A0-2
PIDE_CS1#
PIDE_CS3#
PIDE_DRQ
PIDED_AK#
PIDE_RDY
PIDE_IOR#
PIDE_IOW#
PIDE_INTRQ
SIDE_D0-15
SIDE_A0-2
SIDE_CS1#
SIDE_CS3#
SIDE_DRQ
SIDED_AK#
SIDE_RDY
SIDE_IOR#
SIDE_IOW#
SIDE_INTRQ
DASP_S
Primary IDE ATA bidirectional data bus
Primary IDE ATA address bus
In/Out
Out
Out
Out
In
Primary IDE chip select 1
Primary IDE chip select 3
Primary IDE DMA Request for IDE Master
Primary IDE DACK# for IDE Master
Out
In
Primary IDE Ready
Primary IDE IOR# command; function differs in Ultra-33 mode
Primary IDE IOW# command; function differs in Ultra-33 mode
Primary channel interrupt request
Out
Out
In/Out
In/Out
Out
Out
Out
In
Secondary IDE ATA bidirectional data bus
Secondary IDE ATA address bus
Secondary IDE chip select 1
Secondary IDE chip select 3
Secondary IDE DMA Request for IDE Master
Secondary IDE DACK# for IDE Master
Secondary IDE Ready
Out
In
Secondary IDE IOR# command; function differs in Ultra-33 mode
Secondary IDE IOW# command; function differs in Ultra-33 mode
Secondary channel interrupt request
Drive active or slave present on Secondary IDE channel
Out
Out
In
Out
In
PDIAG_S
Slave diagnostic passed indicator; function differs in DMA66 or DMA100
modes
HDRST#
Drive hardware reset
Out
In
CBLID_P#
Detects 80-conductor IDE cable on primary IDE channel
ETX-945 User Manual 1.00
Page 28
4.4.2 Ethernet port
The ETX-945’s 10/100Mbps Ethernet LAN interface signals on connector ETX4 require the use of an external 1:1
transformer. The ETX 3.0 specification provides further details regarding the transformer’s requirements.
Signal Name
Signal Function
Direction
TXD#, TXD
RXD#, RXD
Transmit data differential pair
Receive data differential pair
Out
In
ACTLED#
LILED#
Data transmit/receive activity LED (on = data activity
Out
Out
Out
Link Integrity LED (on = link valid)
SPEEDLED#
Speed LED (on = 100Mbps, off = 10Mbps)
4.4.3 Power control and management
These pins support various power management and control functions, in conjunction with the board’s ACPI BIOS
functionality and system management embedded controller.
Signal Name
Signal Function
Direction
PWGIN
Power good input (power supply is ready)
+5V +/- 5% DC power input for suspend mode
Signals power supply to remove all power except 5V_SB
Power Button signal; supports ACPI Power Button function
Resume Reset; resets internal power management logic
System Management Bus Alert from SM bus devices
Battery low signal
In
5V_SB
In
PS_ON#
Out
In
PWRBTN#
RSMRST#
SMBALRT#
BATLOW#
GPE1#, GPE2#
EXTSMI#
In
In
In
General purpose power management event inputs
System management interrupt
In
In
ETX-945 User Manual 1.00
Page 29
4.4.4 Miscellaneous signals
These pins implement the ETX-945’s I2C and SM Bus interfaces, PC-speaker output, and RTC/CMOS backup
power input.
Signal Name
Signal Function
Direction
SPEAKER
This logic-level signal can drive a piezoelectric speaker
(typically via a transistor)
O
BATT
2.4V to 3.3V DC backup power input for RTC and CMOS
RAM; typically connects to an external 3V lithium cell
I
I2CLK
Bidirectional I2C Bus clock signal
Bidirectional I2C Bus data signal
Bidirectional SM Bus clock signal
Bidirectional SM Bus data signal
Keyboard inhibit signal
I/O
I/O
I/O
I/O
In
I2DAT
SMBCLK
SMBDATA
KBINH#
OVCR#
USB over-current detected
Reserved; do not connect
In
ROMKBCS#
EXT_PRG
GPCS#
n/a
n/a
n/a
Reserved; do not connect
Reserved; do not connect
4.5 SATA Connectors
The ETX-945 provides two SATA (Serial ATA) drive interfaces on a pair of 7-pin connectors located on the top
side of the board. The position and pinout of each of these connectors is compliant with the ETX 3.0 Specification.
The signal assignment appears below.
1
2
3
4
5
6
7
GND
TX+
TX-
GND
RX+
RX-
GND
ETX-945 User Manual 1.00
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5. APPENDIX: SYSTEM RESOURCES REFERENCE
5.1 BIOS Memory Mapping
Address
Device Description
E000:0000h - F000:FFFFh
D000:2000h - D000:FFFFh
D000:0000h - D000: FFFh
C000:E000h - CF00:FFFFh
C000:0000h - C000:DFFFh
A000:0000h - B000:FFFFh
0000:0000h - 9000:FFFFh
System BIOS Area
Free space
LAN ROM
Free space
VGA BIOS
VGA RAM
DOS 640K
ETX-945 User Manual 1.00
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5.2 I/O Port Address Map
Each peripheral device in the system is assigned a set of I/O port addresses, which also become the identity of
the device. The following table lists the I/O port addresses used:
Address
Device Description
00000000 - 00000007
00000000 - 00000CF7
DMA Controller
PCI bus
00000010 - 0000001F
00000020 - 00000021
00000022 - 0000003F
00000040 - 00000043
00000044 - 0000005F
00000060 - 00000060
00000061 – 00000061
00000062 - 00000063
00000064 - 00000064
00000065 - 0000006F
00000070 - 00000073
00000074 - 0000007F
00000080 - 00000090
00000091 - 00000093
00000094 - 0000009F
000000A0 - 000000A1
000000A2 - 000000BF
000000C0 - 000000DF
000000E0 - 000000EF
000000F0 - 000000FF
000001F0 - 000001F7
00000274 - 00000277
00000279 - 00000279
00000294 - 00000297
Motherboard Resource
Programmable Interrupt Controller
Motherboard Resource
System Timer
Motherboard Resource
Standard 0 / 02-Key or Microsoft Natural PS/2 Keyboard
System Speaker
Motherboard Resource
Standard 0 / 02-Key or Microsoft Natural PS/2 Keyboard
Motherboard Resource
System CMOS/real time clock
Motherboard Resource
DMA Controller
Motherboard Resource
DMA Controller
Programmable Interrupt Controller
Motherboard Resource
DMA Controller
Motherboard Resource
Numeric Data Processor
Primary IDE Channel
ISAPNP Read Data Port
ISAPNP Read Data Port
Motherboard Resource
ETX-945 User Manual 1.00
Page 32
000002E8 - 000002EF
000002F8 - 000002FF
00000378 - 0000037F
000003B0 - 000003BB
000003C0 - 000003DF
000003E8 - 000003EF
000003F6 - 000003F6
000003F8 - 000003FF
00000400 - 000004BF
000004D0 - 000004D1
00000500 - 0000051F
00000680 - 000006FF
00000778 - 0000077B
00000880 - 0000088F
00000A78 - 00000A7B
00000BBC - 00000BBF
00000BBC - 00000BBF
00000D00 - 0000FFFF
00000E78 - 00000E7B
00000F78 - 00000F7B
00000FBC - 00000FBF
0000B000 - 0000BFFF
0000C000 - 0000CFFF
0000DF00 - 0000DF3F
0000F000 - 0000F0FF
0000F300 - 0000F30F
0000F400 - 0000F40F
0000F500 - 0000F50F
Communications Port (COM4)
Communications Port (COM2)
Printer Port (LPT )
Mobile Intel 94 Express Chipset Family
Mobile Intel 94 Express Chipset Family
Communications Port (COM3)
Primary IDE Channel
Communications Port (COM )
Motherboard Resource
Motherboard Resource
Intel 8280 G (ICH7 Family) SMBus Controller - 27DA
Motherboard Resource
Printer Port (LPT )
Motherboard Resource
Motherboard Resource
Motherboard Resource
Motherboard Resource
PCI bus
Motherboard Resource
Motherboard Resource
Motherboard Resource
Intel 8280 G (ICH7 Family) PCI Express Root Port - 27D4
Intel 8280 G (ICH7 Family) PCI Express Root Port - 27D0
Intel PRO/ 00 VE Network Connection
Realtek AC’97 Audio
Intel 8280 GBM/GHM (ICH7-M Family) Serial ATA Storage Controller - 27C4
Intel 8280 GBM/GHM (ICH7-M Family) Serial ATA Storage Controller - 27C4
Intel 8280 GBM/GHM (ICH7-M Family) Serial ATA Storage Controller - 27C4
ETX-945 User Manual 1.00
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5.3 Interrupt Request (IRQ) Lines
Peripheral devices use interrupt request lines to notify CPU when services are required. The table below lists the
interrupt request channels used by the ETX-945’s onboard devices.
IRQ Level
Function
IRQ 01
IRQ 03
IRQ04
IRQ 08
IRQ 09
IRQ 10
IRQ 11
IRQ 12
IRQ 13
IRQ 14
IRQ 15
IRQ 16
IRQ 16
IRQ 16
IRQ 17
IRQ 18
IRQ 18
IRQ 19
IRQ 19
IRQ 19
IRQ 20
IRQ 23
IRQ 23
Standard 0 / 02-Key or Microsoft Natural PS/2 Keyboard
Communications Port
Communications Port
System CMOS/real time clock
Microsoft ACPI-Compliant System
Communications Port
Communications Port
PS/2 Compatible Mouse
Math Coprocessor
Primary IDE Channel
Intel 8280 G (ICH7 Family) SMBus Controller - 27DA
Intel 8280 G (ICH7 Family PCI Express Root Port - 27D0
Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27CB
Mobile Intel 94 GM Express Chipset Family
Realtek AC’97 Audio
Intel 8280 G (ICH7 Family) PCI Express Root Port - 27D4
Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27CA
Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27C9
Intel 8280 G (ICH7-M Family) Serial ATA Storage Controller - 27C4
Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27C9
Intel PRO/ 00 VE Network Connection
Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27C8
Intel 8280 G (ICH7 Family) USB2 Enhanced Host Controller - 27CC
ETX-945 User Manual 1.00
Page 34
5.4 BIOS POST Codes
The POST codes used by the ETX-945’s on-board BIOS appear in the table below.
Code
Function
CFh
C0h
Test CMOS read/write functionality
Early chipset initialization: Disable shadow RAM, L2 cache (socket 7 and below), program
basic chipset registers
C1h
Detect memory: Auto detection of DRAM size, type and ECC, auto detection of L2 cache
(socket 7 and below)
C3h
C5h
01h
02h
03h
04h
05h
06h
07h
08h
Expand compressed BIOS code to DRAM
Call chipset hook to copy BIOS back to E000 & F000 shadow RAM
Expand the Xgroup codes located in physical memory address 000:0
Reserved
Initial Super I/O_Early Init switch
Reserved
Blank out screen; Clear CMOS error flag
Reserved
Clear 8042 interface; Initialize 8042 self test
Test special keyboard controller for Winbond 977 series Super I/O chips; enable keyboard
interface
09h
0Ah
Reserved
Disable PS/2 mouse interface (optional); auto-detect ports for keyboard and mouse
followed by a port and interface swap (optional); reset keyboard for Winbond 977 series
Super I/O chips
0Bh-
0Dh
Reserved
0Eh
Test F000h segment shadow to see whether it is read/write capable or not. If test fails,
keep beeping the speaker
0Fh
10h
Reserved
Auto detect flash type to load appropriate flash read/write codes into the run time area in
F000 for ESCD & DMI support
11h
12h
Reserved
Use “walking 1’s” algorithm to check out interface in CMOS circuitry. Also set real time
clock power status and then check for override
13h
Reserved
ETX-945 User Manual 1.00
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14h
Program chipset default values into chipset. Chipset default values are MODBINable by
OEM customers
15h
16h
17h
18h
Reserved
Initial Early_Init_Onboard_Generator switch
Reserved
Detect CPU information including brand, SMI type (Cyrix or Intel) and CPU level ( 86 or
686)
19-
Reserved
1Ah
1Bh
Initial interrupts vector table. If no special specified, all H/W interrupts are directed to
SPURIOUS_INT_HDLR & S/W interrupts to SPURIOUS_soft_HDLR
1Ch
1Dh
1Eh
1Fh
20h
21h
22h
23h
Reserved
Initial EARLY_PM_INIT switch
Reserved
Load keyboard matrix (notebook platform)
Reserved
HPM initialization (notebook platform)
Reserved
Check validity of RTC value; Load CMOS settings into BIOS stack. If CMOS checksum
fails, use default value instead; Prepare BIOS resource map for PCI & PnP use. If ESCD is
valid, take into consideration of the ESCD's legacy information; Onboard clock generator
initialization. Disable respective clock resource to empty PCI & DIMM slots; Early PCI
initialization - Enumerate PCI bus number, assign memory & I/O resource, search for a
valid VGA device & VGA BIOS, and put it into C000:0
24-
Reserved
26h
27h
28h
29h
Initialize INT 09 buffer
Reserved
Program CPU internal MTRR (P6 & PII) for 0-640K memory address; Initialize the APIC for
Pentium class CPU; Program early chipset according to CMOS setup; Measure CPU
speed; Invoke video BIOS
2A-
Reserved
2Ch
2Dh
Initialize multilanguage; put information on screen display, including Award title, CPU type,
CPU speed, etc.
2E-
32h
Reserved
33h
Reset keyboard except Winbond 977 series Super I/O chips
ETX-945 User Manual 1.00
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34-
Reserved
3Bh
3Ch
3Dh
3Eh
3Fh
40h
Test 82 4
Reserved
Test 82 9 interrupt mask bits for channel
Reserved
Test 92 9 interrupt mask bits for channel 2
Reserved
41-
42h
43h
Test 82 9 functionality
Reserved
44-
46h
47h
48h
49h
Initialize EISA slot
Reserved
Calculate total memory by testing the last double last word of each 64K page; Program
writes allocation for AMD K CPU
4A-
Reserved
4Dh
4Eh
Program MTRR of M CPU; initialize L2 cache for P6 class CPU and program cacheable
range; Initialize the APIC for P6 class CPU; On MP platform, adjust the cacheable range to
smaller one in case the cacheable ranges between each CPU are not identical
4Fh
50h
51h
52h
Reserved
Initialize USB
Reserved
Test all memory (clear all extended memory to 0)
Reserved
53-
54h
55h
56h
57h
58h
59h
5Ah
5Bh
5Ch
Display number of processors (multi-processor platform)
Reserved
Display PnP logo; Early ISA PnP initialization and assign CSN to every ISA PnP device
Reserved
Initialize the combined Trend Anti-Virus code
Reserved
Show message for entering AWDFLASH.EXE from FDD (optional feature)
Reserved
ETX-945 User Manual 1.00
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5Dh
Initialize Init_Onboard_Super_IO switch; Initialize Init_Onboard_AUDIO switch
Reserved
5E-
5Fh
60h
Okay to enter Setup utility
Reserved
61-
64h
65h
66h
67h
68h
69h
6Ah
6Bh
Initialize PS/2 mouse
Reserved
Prepare memory size information for function call: INT h ax=E820h
Reserved
Turn on L2 cache
Reserved
Program chipset registers according to items described in Setup and Auto-Configuration
table
6Ch
6Dh
Reserved
Assign resources to all ISA PnP devices; Auto assign ports to onboard COM ports if the
corresponding item in Setup is set to “AUTO”
6Eh
6Fh
Reserved
Initialize floppy controller; Setup floppy related fields in 40:hardware
Reserved
70-
72h
73h
74h
75h
76h
77h
Enter AWDFLASH.EXE if: AWDFLASH.EXE is found in floppy dive and ALT+F2 is pressed
Reserved
Detect and install all IDE devices: HDD, LS 20, ZIP, CDROM...
Reserved
Detect serial ports and parallel ports
Reserved
78-
79h
7Ah
Detect and install coprocessor
Reserved
7B-
7Eh
7Fh
Switch back to text mode if full screen logo is supported: if errors occur, report errors & wait
for keys, if no errors occur or F1 key is pressed continue - Clear EPA or customization logo
80-
Reserved
81h
ETX-945 User Manual 1.00
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82H
Call chipset power management hook: Recover the text fond used by EPA logo (not for full
screen logo), If password is set, ask for password
83H
84h
85h
Save all data in stack back to CMOS
Initialize ISA PnP boot devices
Final USB initialization; NET PC: Build SYSID structure; Switch screen back to text mode;
Set up ACPI table at top of memory; Invoke ISA adapter ROMs; Assign IRQs to PCI
devices; Initialize APM; Clear noise of IRQs
86-
Reserved
92h
93h
94h
Read HDD boot sector information for Trend Anti-Virus code
Enable L2 cache; Program boot up speed; Chipset final initialization; Power management
final initialization; Clear screen and display summary table; Program K6 write allocation;
Program P6 class write combining
95h
96h
Program daylight saving; update keyboard LED and typematic rate
Build MP table; Build and update ESCD; Set CMOS century to 20h or 19h; Load CMOS
time into DOS timer tick; Build MSIRQ routing table
FFh
Boot attempt (INT 19h)
ETX-945 User Manual 1.00
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