Before using this information and the product it supports, be sure to read the general information under
Appendix E, “Notices and trademarks” on page 38.
First Edition (December 1999)
The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with
local law: INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION “AS IS” WITHOUT
WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied
warranties in certain transactions, therefore, this statement may not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information
herein; these changes will be incorporated in new editions of the publication. IBM may make improvements and/or changes in the
product(s) and/or the program(s) described in this publication at any time.
This publication was developed for products and services offered in the United States of America. IBM may not offer the products,
services, or features discussed in this document in other countries, and the information is subject to change without notice. Consult
your local IBM representative for information on the products, services, and features available in your area.
Requests for technical information about IBM products should be made to your IBM reseller or IBM marketing representative.
Copyright International Business Machines Corporation 1999. All rights reserved.
Note to U.S. Government Users — Documentation related to restricted rights — Use, duplication or disclosure is subject to
restrictions set forth in GSA ADP Schedule Contract with IBM Corp.
manual is intended for developers who want to provide hardware and software products to operate with
this IBM computer and provides an in-depth view of how this IBM computer works. Users of this
publication should have an understanding of computer architecture and programming concepts.
Related publications
In addition to this manual, the following IBM publications provide information related to the operation of the
IBM IntelliStation M Pro:
IntelliStation M Pro User Guide
This hardcopy publication, also available on the
setting up your computer, configuring your hardware and software, operating and maintaining your
computer, and installing options. Also included are warranty information, instructions for diagnosing
and solving problems, and information on how to obtain help and service.
provides information for the IBM IntelliStation M Pro Type 6868. The
Software Selections CD
, contains information about
Understanding Your Computer
This online publication is provided on the
your computer has IBM-preinstalled software, this document is also available using Access IBM. It
includes general information about using personal computers and in-depth information about the
specific features of your computer.
Hardware Maintenance Manual
This publication contains information for trained service technicians. It is available at
http://www.ibm.com/pc/support on the World Wide Web, and it can also be ordered from IBM. To
purchase a copy, see the "Getting Help, Service, and Information" section in
Guide
.
Adaptec SCSI Documentation
This documentation, which is provided on the
Pro computers, includes information on the SCSI interface, including instructions for installing and
configuring SCSI devices.
Terminology usage
Attention: The term
Use of reserved areas can cause compatibility problems, loss of data, or permanent damage to the
hardware. When the contents of a register are changed, the state of the reserved bits must be preserved.
When possible, read the register first and change only the bits that must be changed.
reserved
describes certain signals, bits, and registers that should not be changed.
Software Selections CD
Software Selections CD
that comes with your computer. If
IntelliStation M Pro User
that comes with IntelliStation M
In this manual, some signals are represented in a small, all-capital-letter format (-ACK). A minus sign in
front of the signal indicates that the signal is active low. No sign in front of the signal indicates that the
signal is active high.
The use of the term
When numerical modifiers such as K, M, and G are used, they typically indicate powers of 2, not powers
of 10. For example, 1 KB equals 1024 bytes (210), 1 MB equals 1048576 bytes (220), and 1 GB equals
1 073 741 824 bytes (230).
Copyright IBM Corp. 1999 vii
hex
indicates a hexadecimal number.
Page 8
When expressing storage capacity, MB equals 1 000 KB (1024000). The value is determined by counting
the number of sectors and assuming that every two sectors equals 1 KB.
Note: Depending on the operating system and other system requirements, the storage capacity available
to the user might vary.
viiiTechnical Information Manual
Page 9
Chapter 1. System overview
Chapter 1. System overview
IntelliStation M Pro Type 6868 computer systems provide state-of-the-art computing power with room for
future growth.
Major features
The major features are:
An Intel Pentium III microprocessor with MMX technology, streaming single-instruction multiple
data (SIMD) extensions, and 256 KB L2 cache
Up to 2 GB of RAMBUS system memory
Dual microprocessor support
Integrated IDE bus master controller, Ultra DMA/66 capable
SCSI hard disk drive
System management
– Wake on LAN support
– Desktop Management Interface (DMI) BIOS and DMI software
– Integrated network protocols
– Enablement for remote administration
– Wake on Ring support
IDE CD-ROM drive, standard
Asset security
– Security settings provided by the Configuration/Setup Utility program
- Power-on and administrator password protection
- Startup sequence control
- Hard disk drive and diskette drive access control
- I/O port control
– Cover key lock
– U-bolt and security cabling (optional)
– Operating system security
– Diskette write-protection
– Alert on LAN support
– Tamper-detection switch on the chassis
Accelerated graphics port (AGP)
Integrated 16-bit stereo audio controller and built-in high-quality speaker in some models (supports
AC-97 Audio, SoundBlaster, and Microsoft sound system applications)
Networking
– IBM 10/100 megabits-per-second (Mbps) Ethernet with Wake on LAN support
Copyright IBM Corp. 1999 1
Page 10
– Expansion
- Four drive bays
- Five PCI expansion slots
– PCI I/O bus compatibility
– 3.5-inch, 1.44 MB diskette drive
– Input/output features
- One 25-pin, parallel port with Extended Capabilities Port (ECP)/Extended Parallel Port (EPP)
support
- One 9-pin, universal asynchronous receiver/transmitter (UART) serial port
- Two 4-pin, Universal Serial Bus ports
- One 6-pin, keyboard port
- One 6-pin, mouse port
- One 15-pin, DDC2B-compliant monitor port on the AGP adapter
- Three 3.5-mm audio jacks (line out/headphone, line in, microphone)
Other features
The IntelliStation M Pro supports the following features.
Chapter 1. System overview
Network support
IntelliStation M Pro computers are enabled to support management over a network. The following is a list
of supported functions:
CMOS Save/Restore utility program
CMOS setup over LAN
Selectable primary startup sequence
POST/BIOS update from network:
Selectable automatic power on startup sequence
Wake on LAN
Wake on Ring for serial port
Wake on LAN
The power supply of the computer supports the Wake on LAN feature. With the Wake on LAN feature,
the computer can be turned on when a specific LAN frame is passed to the computer over the LAN. You
can find the menu for setting the Wake on LAN feature in the Configuration/Setup Utility program.
Wake on Ring
All models can be configured to turn on the computer after a ring is detected from an external or internal
modem. The menu for setting the Wake on Ring feature is in the Configuration/Setup Utility program.
One option controls this feature:
Serial Ring Detect: Use this option if the computer has an external modem connected to the serial
port. if the computer has an internal modem.
2Technical Information Manual
Page 11
Chapter 2. System board features
Chapter 2.System board features
This section includes information about system board features.
System board layout
The system board might look slightly different from the one shown.
Note: A diagram of the system board, including switch and jumper settings, is attached to the underside
of the computer cover.
37
36
35
34
33
32
31
.1/ Primary microprocessor
.2/ Secondary microprocessor
.3/ RIMM connector 1 (Channel A)
.4/ RIMM connector 2 (Channel A)
.5/ Power connectors
.6/ Extra power connector
.7/ RIMM connector 3 (Channel B)
.8/ RIMM connector 4 (Channel B)
.9/ SCSI LED connector
.1ð/ Diskette drive connector
.11/ Front panel connector
.12/ Secondary IDE connector
.13/ Primary IDE connector
.14/ Fan connector, front chassis
.15/ C2 security connector
.16/ RFID connector
.17/ ROM recovery jumper
.18/ Administrator password jumper
123
123
.19/ PCI slot 5
.2ð/ Alert on LAN connector
.21/ PCI slot 4
.22/ PCI slot 3
.23/ Internal speaker connector
.24/ CD Audio connector
.25/ Wake on LAN connector
.26/ PCI slot 2
.27/ PCI slot 1
.28/ Fan connector, rear chassis
.29/ AGP slot
.3ð/ Microphone connector
.31/ Line In/Line Out connector
.32/ Battery
.33/ Ethernet connector
.34/ Serial connector
.35/ Parallel connector
.36/ USB connectors
.37/ Mouse/Keyboard connectors
Copyright IBM Corp. 1999 3
Page 12
Pentium III microprocessor with MMX technology
IntelliStation M Pro Type 6868 comes with an Intel Pentium III microprocessor. The microprocessor,
which has an attached heat sink, plugs directly into a connector on the system board.
Features
The features of this microprocessor are as follows:
Optimization for 32-bit software
64-bit microprocessor data bus
133 MHz front-side bus (FSB)
256 KB L2 cache integrated into the microprocessor
32-bit microprocessor address bus
Math coprocessor
MMX technology, which boosts the processing of graphic, video, and audio data
Cache speed is full processor core speed
– 4-way set associative
– Nonblocking
Chapter 2. System board features
Chip set control
The Intel 840 chip set is the interface between the microprocessor and the following:
Memory subsystem
PCI bus
IDE bus master connection
USB ports
SMBus
Enhanced DMA controller
Real-time clock (RTC)
System memory
The system memory interface is controlled by the Intel 840 chip set. Rambus dynamic random access
memory (RDRAM) is standard.
The maximum amount of addressable system memory is 2 GB. For memory expansion, the system board
provides four Rambus inline memory module (RIMM) connectors. Rambus memory is divided into two
channels, A and B.
The system board supports PC600 memory and PC800 memory RIMMs in sizes of 64 MB, 128 MB, 256
MB, and 512 MB. Channels A and B must contain equal amounts of memory. The amount of preinstalled
memory varies by model.
The following information applies to system memory:
ECC (error checking and correction) RDRAM is standard.
The maximum height of memory modules is 6.35 cm (2.5 in.).
Install only ECC RIMMs to enable ECC.
RIMM connectors do not support dual inline memory modules (DIMMs).
Any connector that does not have a RIMM installed must have a
that looks like a RIMM but has no memory on it. A continuity RIMM continues the connection on a
RIMM connector that does not have memory installed in it.
continuity RIMM
(C-RIMM), a module
4Technical Information Manual
Page 13
Chapter 2. System board features
Use PC600 or PC800 RIMMs only.
Maximum system memory can be auto-detected and auto-configured using serial presence detect and
configuration interface (BIOS specific).
The following table shows the possible configuration of RIMMs and continuity RIMMs that can be used
– PC600 RIMM runs at 300 MHz
– PC800 RIMM runs at 400 MHz
For information on the pin assignments for the memory-module connectors, see “Memory connectors”
on page 23.
PCI bus
The fully synchronous 33 MHz PCI bus originates in the chip set. Features of the PCI bus are:
Integrated arbiter with multitransaction PCI arbitration acceleration hooks
Zero-wait-state, microprocessor-to-PCI write interface for high-performance graphics
Built-in PCI bus arbiter with support for up to six 32-bit PCI devices
Microprocessor-to-PCI memory write posting
Conversion of back-to-back, sequential, microprocessor-to-PCI memory write to PCI burst write
PCI-to-DRAM up to 100+ megabytes per second (MBps) speed
Multitransaction timer to support multiple, short PCI transactions within one PCI arbitration cycle
PCI 2.2 compliant
Delayed transaction
PCI parity checking and generation support
Chapter 2. System board features5
Page 14
Chapter 2. System board features
IDE bus master interface
The system board incorporates a PCI-to-IDE interface that complies with the
with Extensions
The bus master for the IDE interface is integrated into the I/O hub of the Intel 840 chip set. The chip
set is PCI 2.2 compliant. It connects directly to the PCI bus and is designed to allow concurrent
operations on the PCI bus and IDE bus. The chip set is capable of supporting PIO mode 0–4 devices
and IDE DMA mode 0–3 devices, and ATA 66 transfers of up to 66 MBps.
The IDE devices receive their power through a four-position power cable containing +5dc, +12dc, and
ground voltage. When devices are added to the IDE interface, one device is designated as the master
device and another is designated as the slave or subordinate device. These designations are
determined by switches or jumpers on each device. There are two IDE ports, one designated Primary
and the other Secondary, allowing for up to four devices to be attached. The total number of physical
IDE devices is determined by the mechanical package.
For the IDE interface, no resource assignments are given in the system memory or the direct memory
access (DMA) channels. For information on the resource assignments, see “Input/output address
map” on page 32 and Figure 34 on page 36 (for IRQ assignments).
standard.
AT Attachment Interface
Two connectors are provided on the system board for the IDE interface. For information on the
connector pin assignments, see “IDE connectors” on page 26.
USB interface
Universal Serial Bus (USB) technology is a standard feature of the computer. The system board
provides the USB interface with two connectors integrated into the ICH1 (I/O hub) in the chip set. A
USB-enabled device can attach to a connector, and if that device is a hub, multiple peripheral devices
can attach to the hub and be used by the system. The USB connectors use Plug and Play technology
for installed devices. The speed of the USB is up to 12 MBps with a maximum of 127 peripheral
devices. The USB is compliant with
Features provided by USB technology include:
Support for hot-pluggable devices
Support for concurrent operation of multiple devices
Suitability for different device speeds
Support for up to five meters' (16 ft 4.9 in) cable length from host to hub or from hub to hub
Guaranteed speeds and low latencies appropriate for specific devices
Wide range of packet sizes
Limited power to hubs
For information on the connector pin assignments for the USB interface, see “USB port connectors” on
page 29.
Universal Host Controller Interface Guide 1.0
.
Low pin-count bus
The low pin-count (LPC) bus is a new design that enables device connections to the Super I/O without
ISA or X-Bus. The IntelliStation M Pro uses the National Semiconductor PC87363 Super I/O chip.
The PC87363 chip runs at 33 MHz and includes the following:
Diskette drive controller
Keyboard and mouse controller
IEEE 1284 parallel port
One UART serial port
A setting in the Configuration/Setup Utility program enables or disables diskette write protection.
Video subsystem
The IntelliStation M Pro comes with one of the following graphics solutions:
Matrox Millennium G400 accelerated graphics port (AGP) adapter
IBM Fire GL1 AGP adapter
Appian Gemini AGP adapter
Intense3D 4110 AGP adapter
Features of the Matrox Millennium G400 AGP adapter
The Matrox Millennium G400 AGP adapter is a 2D/3D video solution that includes the Matrox MGA
G400 video chip, 16 MB of 166 MHz SGRAM, a 300 MHz random access memory and
digital-to-analog converter (RAMDAC), an EEPROM module with video POST and BIOS code, video
support for various hardware multimedia upgrades,and a DDC2B monitor connector.
The Matrox MGA G400 video chip is 100% compatible with VGA function, supports all video modes,
and contains the following advanced features:
Integrated video subsystem on the chip including 2D, 3D, and a video port
66 MHz AGP 4x system bus interface with sideband address support and a request queue depth
of 32
Command list bus-mastering support for fast 2D performance
128-bit, 166 MHz SGRAM interface with block write and write-per-bit support
256-bit internal data bus
OpenGL MCD and Direct3D optimized 3D engine
High-resolution support up to 2048 x 1536
300 MHz, internal RAMDAC that supports up to 75 Hz refresh rate at 1920 x 1440 resolution
Second display output port capable of running at 136 MHz (1280 x 1024 at 75 Hz), which can
support a TV, a second monitor, or a flat-panel display
Multiple monitor and adapter support (up to 4) in one computer
Compliance with the following standards:
– PC98 (along with PC99, a Microsoft hardware requirement)
– Accelerated Graphics Port (AGP) 2.0,
– VESA VBE V2.0,
– DDC2B
Advanced power-management support
Complete Plug and Play support
Chapter 2. System board features7
Page 16
Chapter 2. System board features
Features of the IBM Fire GL1 AGP adapter
The IBM Fire GL1 AGP adapter includes the IBM Oasis video chip, 32 MB of 100/124 MHz SGRAM,
an EEPROM module that contains the video POST and BIOS code, and a DDC2B monitor connector.
The IBM Oasis chip uses CMOS technology and is 100% compatible with VGA function and supports
all VGA modes. The IBM Oasis chip also
contains the following hardware features:
Integrated video subsystem on a chip including 2D engine, 3D engine, and a RAMDAC
66 MHz AGP 2x capable system bus interface with sideband address support and a request
queue depth of 9
256-bit, 2-way interleaved 100 MHz SGRAM interface with block write and write-per-bit support
Dual DMA units used to move data between system memory and the video memory
Pixel cache used for BitBLITs, rendering operations, and texture operations
Overlay support on a per-window basis
OpenGL MCD and Direct3D optimized 3D engine
Pentium III single instruction, multiple data (SIMD) and multiprocessor optimization in the OpenGL
ICD
Video processor that includes color space conversion and hardware scaling with X and Y
interpolation for high quality video playback.
250 MHz, internal RAMDAC that supports up to 85 Hz refresh rate at 1600 x 1200 or 75 Hz at
1920 x 1200
Multiple monitor and adapter support (up to 4) in one computer
Complete Plug and Play support, including the monitor
Features of the Appian Gemini AGP adapter
The Appian Gemini AGP adapter is a single-slot, dual-monitor graphics solution featuring a high-speed
AGP 2X interface, 16 MB of on-board SGRAM running at 110 MHz and full VGA and SVGA
compatibility. The Appian Gemini AGP adapter has two display channels and is designed to support
multiple monitor configurations under Windows 98, Windows NT 4.0 Workstation, and Windows 2000.
The Appian Gemini AGP adapter uses a single Savage/MX graphics accelerator from S3 for dual
monitor output. The Savage/MX features a 270 MHz RAMDAC for accelerated 2D and 3D graphics.
The Appian Gemini AGP adapter card includes high-resolution display, plug and play compliance,
support for video input/output, DVD motion compensation, support for DirectX 6 with hardware texture
compression, and dual outputs.
The Appian Gemini also features the powerful and easy-to-use Appian HydraVision multiple monitor
display management software for Windows 98, Windows NT 4.0 Workstation, and Windows 2000.
HydraVision software enables user-defined placement of windows and dialog boxes within the multiple
monitor display space and provides a variety of productivity tools designed specifically for multiple
monitor management, including the following:
S3 Savage/MX
270 MHz RAMDAC
1280 x 1024 x 24 bits per pixel (bpp) at 85 Hz on two channels
AGP 2X interface with sideband addressing
8Technical Information Manual
Page 17
Chapter 2. System board features
16 MB 105 MHz SGRAM (shared frame buffer)
Support for 8, 16, and 32 bits per pixel (bpp)
Support for display power management signaling (DPMS) and Advanced Configuration and Power
Interface (ACPI) management
Display data channel (DDC) support
Driver support
Direct3D and OpenGL
Support for video signal conversion between:
– Phase Alternate Line (PAL)
– National Television Systems Committee (NTSC)
– Sequential Couleur Avec Memoire (SECAM, sequential color with memory)
Appian TV Tuner support
PC98 and PC99 compliance
Features of the Intense3D 4110 AGP adapter
The Intense 3D 4110 is a 2D/3D video solution with 128 MB 66.6 MHz SGRAM that includes:
AGP 2x DMA transfer rates
AGP 2x Fast write transfers from host microprocessor
Onboard texture memory with full bitmapped trilinear interpolated texture processing
Maximum resolution of 1280 x 1024, 75 Hz vertical refresh for Windows NT (VGA) startup.
2 video lookup tables
16- and 32-bit color depths
10-bit gamma correction
Sterioscopic views support - interlaced or frame sequential
DDC monitor support
DVI-I Digital flat-panel display support
Synchronizing, or genlocking, of the video data to an external video source (requires optional plug
on adapter module)
Multiview functionality, which enables frame locking and rate locking of multiple workstations
(requires optional plug on adapter module)
Advanced power-management support
Complete Plug and Play support
Video resources
The video subsystem supports all video graphics array (VGA) modes and is compliant with super
video graphics array (SVGA) modes and the
The graphics memory controller supports the VESA DDC standard 1.1 and uses DDC1 and DDC2B to
determine optimal values during automatic monitor detection.
Chapter 2. System board features9
Video Electronics Standards Association (VESA) 1.2
.
Page 18
The video subsystem has the following resource assignments.
IRQPCI interrupt 1 (automatically assigned to IRQ 0BH by POST or can be disabled in the Configuration/Setup
Utility)
DMANone
For further information on resource assignments, see Appendix B, “System address maps” on
page 32 and Appendix C, “IRQ and DMA channel assignments” on page 36.
The IntelliStation M Pro supports the following video subsystem modes.
Figure 3. Supported VGA video modes
Dot
Mode
(hex)
00Text40 x 25 charactersB/WB800028.32231.570
01Text40 x 25 characters16B800028.32231.570
02Text80 x 25 charactersB/WB800028.32231.570
03Text80 x 25 characters16B800028.32231.570
04Graphics320 x 200 pixels4B800025.17531.570
05Graphics320 x 200 pixels4B800025.17531.570
06Text640 x 200 pixels2B800025.17531.570
07Text80 x 25 charactersMonoB000028.32231.570
0DGraphics320 x 200 pixels16A000025.17531.570
0EGraphics640 x 200 pixels16A000025.17531.570
0FGraphics640 x 350 pixelsMonoA000025.17531.570
10Graphics640 x 350 pixels16A000025.17531.570
11Graphics640 x 480 pixels2A000025.17531.570
12Graphics640 x 480 pixels16A000025.17531.560
13Graphics320 x 200 pixels256A000025.17531.570
Display
modeScreen resolutionColors
Buffer start
(hex)
clock
(MHz)
Sweep
rate
(kHz)
Refresh
rate (Hz)
Chapter 2. System board features
Monitor support
The video subsystem provides a 15-pin monitor connector on the preinstalled graphics adapter. For
information on connector pin assignments, see Appendix A, “Connector pin assignments” on page 23.
Audio subsystem
The IntelliStation M Pro comes with an integrated audio controller. These models are capable of
playing and recording sounds and support SoundBlaster, Adlib, and Microsoft Windows Sound System
applications.
The device drivers are on the hard disk and are also available on the
Driver and IBM Enhanced Diagnostics CD
that comes with the computer.
10Technical Information Manual
Product Recovery CD
or
Device
Page 19
Chapter 2. System board features
If you connect an optional device to the audio connectors, follow the instructions provided by the
manufacturer. (Note that device drivers might be required. If necessary, contact the manufacturer for
information on these device drivers.)
The following connectors are available on the integrated audio controller:
Line/headphone out
must connect a set of speakers to the Line out port. These speakers must be powered with a
built-in amplifier. In general, any powered speakers designed for use with personal computers can
be used with the audio subsystem. These speakers are available with a wide range of features
and power outputs.
Line in
Microphone
port for connecting musical devices, such as a portable CD player or stereo system.
for connecting a microphone.
port for connecting powered speakers. To hear audio from the adapter you
Super input/output controller
Control of the integrated input/output (I/O) and diskette drive controllers is provided by a single
module. This module, which supports Plug and Play, controls the following features:
Diskette drive interface
Serial port
Parallel port
Keyboard and mouse ports
General-purpose I/O ports
Diskette drive interface
The IntelliStation M Pro diskette drive subsystem supports the following devices:
1.44 MB, 3.5-inch diskette drive
1.44 MB, 3.5-inch, 3-mode drive for Japan (no BIOS support for 3-mode drive)
Note: A 2.88 MB, 3.5-inch diskette drive is not supported.
One 34-pin connector is provided on the system board for diskette drive support. For information on
the connector pin assignments, see “Diskette drive connector” on page 27.
Serial port
One universal asynchronous receiver/transmitter (UART) serial port is integrated into the system
board. The serial port includes 16-byte data, first-in first-out (FIFO) buffers and has a programmable
baud rate generator. The serial port is NS16450 and PC16550A compatible.
For information on the connector pin assignments, see “Serial port connector” on page 30.
Note: Current loop interface is not supported.
The following figure shows the serial port assignments in the configuration.
Figure 4. Serial port assignments
Port assignmentAddress range (hex)IRQ level
Serial A03F8–03FFIRQ4
The default setting for the serial port is COM1.
Chapter 2. System board features11
Page 20
Parallel port
Integrated in the system board is support for extended capabilities port (ECP), enhanced parallel port
(EPP), and standard parallel port (SPP) modes. The modes of operation are selected through the
Configuration/Setup Utility program with the default mode set to SPP. The ECP and EPP modes are
compliant with IEEE 1284.
The following figure shows the parallel port assignments used in the configuration.
The default setting for the parallel port is Parallel 1.
The system board has one connector for the parallel port. For information on the connector pin
assignments, see “Parallel port connector” on page 31.
Chapter 2. System board features
Keyboard and mouse ports
The keyboard and mouse subsystem is controlled by a general purpose 8-bit microcontroller; it is
compatible with 8042AH and PC87911. The controller consists of 256 bytes of data memory and 2
KB of read-only memory (ROM).
The controller has two logical devices: one controls the keyboard and the other controls the mouse.
The keyboard has two fixed I/O addresses and a fixed IRQ line and can operate without the mouse.
The mouse cannot operate without the keyboard because, although it has a fixed IRQ line, the mouse
relies on the addresses of the keyboard for operation. For the keyboard and mouse interfaces, no
resource assignments are given in the system memory addresses or DMA channels. For information
on the resource assignments, see “Input/output address map” on page 32 and Figure 34 on page 36
(for IRQ assignments).
The system board has one connector for the keyboard port and one connector for the mouse port.
For information on the connector pin assignments, see “Mouse and keyboard port connectors” on
page 30.
Network connection
IntelliStation M Pro models have an integrated Ethernet controller, with the following features:
Operates in shared 10BASE-T or 100BASE-TX environment
Transmits and receives data at 10 Mbps or 100 Mbps
Has a RJ-45 connector for LAN attachment
Operates in symmetrical multiprocessing (SMP) environments
Supports Wake on LAN
Supports Alert on LAN
Supports Remote Program Load (RPL) and Dynamic Host Configuration Protocol (DHCP)
12Technical Information Manual
Page 21
Chapter 2. System board features
Cabling requirements for Wake on LAN adapters
The IntelliStation M Pro has a 3-pin connector on the system board that provides the auxiliary 5 volts
(AUX5) and wake-up signal connections.
Real-time clock and CMOS
The real-time clock is a low-power clock that provides a time-of-day clock and a calendar. The clock
settings are maintained by an external battery source of +3 V dc.
The system uses 242 bytes of complementary metal-oxide semiconductor (CMOS) memory to store
data. The CMOS memory is erased if the recovery jumper on the system board is moved.
To locate the battery, see “System board layout” on page 3.
Flash EEPROM
The system board uses 8 megabits (Mb) of flash electrically erasable, programmable, read-only
memory (EEPROM) to store the basic input/output system (BIOS), video BIOS, IBM logo,
Configuration/Setup Utility, and Plug and Play data.
If necessary, the EEPROM can be easily updated using a stand-alone utility program that is available
on a 3.5-inch diskette.
Expansion adapters
Each PCI-expansion connector is a 32-bit slot. PCI-expansion connectors support the 32-bit +5 V dc,
local-bus signaling environment that is defined in
The IntelliStation M Pro has five PCI slots to support the addition of adapters. For information on
installing adapters, see the
For information on the connector pin assignments, see “PCI connectors” on page 25.
Recovery jumper
The recovery jumper on the system board is used to reset CMOS default vaues. For the location of
the recovery jumper, see the “System board layout” on page 3.
Figure 6. Recovery jumper
Pins Description
1 and 2 Normal (factory default)
2 and 3 Clear CMOS/password, boot block recovery
IntelliStation M Pro User Guide
PCI Local Bus Specification 2.1
.
.
Chapter 2. System board features13
Page 22
Cable connectors
Connections for attaching devices are provided on the back of the computer. The connectors are:
USB (2)
Mouse
Keyboard
Serial
Parallel
Monitor (SVGA or DVI)
Audio connectors for line in, line/headphone out, and microphone
Connector panel
Connectors for features integrated into the system board can be identified by an icon directly below
each connector. A connector located on an adapter might not have an identifying icon.
For pin-out details on connectors, see Appendix A, “Connector pin assignments” on page 23. The
following illustration shows the connector panel for the IntelliStation M Pro:
This section lists the physical specifications for the IntelliStation M Pro Type 6868. The IntelliStation
M Pro has five expansion slots and four drive bays.
Note: This computer is classified as a Class A digital device. Please see the
User Guide
Dimensions
Height: 492 mm (19.4 in.)
Width: 200 mm (7.9 in.)
Depth: 460 mm (18.1 in.)
Weight
Minimum configuration as shipped: 18.1 kg (40 lb)
Maximum configuration: 20.4 kg (45 lb)
Environment
Air temperature:
– System on: 10° to 35°C (50° to 95°F)
– System off: 10° to 43°C (50° to 110°F)
– Maximum altitude: 2134 m (7000 ft)
Note: The maximum altitude, 2133.6 m (7000 ft.), is
the maximum altitude at which the specified air
temperatures apply. At higher altitudes, the
maximum air temperatures are lower than those
specified.
Humidity:
– System on: 8% to 80%
– System off: 8% to 80%
Electrical input
Input voltage:
– Low range:
- Minimum: 90 V ac
- Maximum: 137 V ac
- Input frequency range: 57–63 Hz
- Voltage switch setting: 115 V ac
– High range:
- Minimum: 180 V ac
- Maximum: 265 V ac
- Input frequency range: 47–53 Hz
- Voltage switch setting: 230 V ac
– Input kilovolt-amperes (kVA) (approximate):
- Minimum configuration as shipped: 0.08 kVA
- Maximum configuration: 0.28 kVA
Note: Power consumption and heat output vary depending
on the number and type of optional features installed
and the power management optional features in use.
for further information about this classification.
Heat output
Approximate heat output in British thermal units (Btu) per
Approximately 0.56 cubic meter per minute (20 cubic feet
per minute) maximum
Acoustical noise-emission values
Average sound-pressure levels:
– At operator position:
- Idle: 37 dBA
- Operating: 43 dBA
– At bystander position–1 meter (3.3 ft):
- Idle: 32 dBA
- Operating: 36 dBA
Declared (upper limit) sound-power levels:
– Idle: 4.7 bels
– Operating: 5.1 bels
Note: These levels were measured in controlled acoustical
environments according to procedures specified by the
American National Standards Institute (ANSI) S12.10 and
ISO 7779 and are reported in accordance with ISO 9296.
Actual sound-pressure levels in a given location might
exceed the average values stated because of room
reflections and other nearby noise sources. The declared
sound-power levels indicate an upper limit, below which a
large number of computers will operate.
IntelliStation M Pro
Copyright IBM Corp. 1999 15
Page 24
Chapter 4. Power supply
The IntelliStation M Pro uses a 330-watt power supply. This power supply provides +3.3-volt power
for the Pentium microprocessor and core chip set and +5-volt power for PCI adapters. Also included
is an auxiliary 5-volt (AUX 5) supply to provide power to power-management circuitry and the Wake on
LAN feature. The power supply converts the ac input voltage into four dc output voltages and
provides power for the following:
System board
Adapters
Internal drives
Keyboard and auxiliary devices
USB devices
A logic signal on the power connector controls the power supply; the front panel switch is not directly
connected to the power supply.
The power supply connects to the system board with a 2-pin by 10-pin connector.
Chapter 4. Power supply
Power input
The following figure shows the power-input specifications. The power supply automatically selects the
correct input voltage.
Figure 7. Power-input requirements
SpecificationMeasurements
Input voltage, low range100 (min) to 127 (max) V ac
Input voltage, high range200 (min) to 240 (max) V ac
Input frequency50 Hz ± 3 Hz or 60 Hz ± 3 Hz
Power output
The power supply outputs shown in the following figure includes the current-supply capability of all the
connectors, including system board, DASD, PCI, and auxiliary outputs.
Figure 8. Power-output (330 watts)
Output voltageRegulationMinimum currentMaximum current
+5 volts+5% to −4%1.5 A32.0 A
+12 volts+5% to −5%0.2 A 8.5 A
−12 volts+10% to −9%0.0 A 0.7 A
+3.3 volts±5%0.0 A25.0 A
−5 volts±10%0.0 A 0.4 A
+5 volt (auxiliary)+5% to −5%0.005 A 0.75 A
Note: The total combined 3.3 V and 5 V power must not exceed 217 watts.
16 Copyright IBM Corp. 1999
Page 25
Chapter 4. Power supply
Component outputs
The power supply provides separate voltage sources for the system board and internal storage
devices. The following figures show the approximate power that is provided for specific system
components. Many components draw less current than the maximum shown.
Figure 9. System board
Supply voltageMaximum currentRegulation limits
+3.3 V dc3000 mA+5.0% to −5.0%
+5.0 V dc4000 mA+5.0% to −4.0%
+12.0 V dc25.0 mA+5.0% to −5.0%
−12.0 V dc 25.0 mA+10.0% to −9.0%
Figure 10. Keyboard port
Supply voltageMaximum currentRegulation limits
+5.0 V dc275 mA +5.0% to −4.0%
Figure 11. PCI-bus adapters (per slot)
Supply voltageMaximum currentRegulation limits
+5.0 V dc2000 mA+5.0% to −4.0%
+3.3 V dc3030 mA+5.0% to −4.0%
Note: For each PCI connector, the maximum power consumption is rated at 10 watts for +5 V dc
and +3.3 V dc combined. Typical power budget assumptions use 7.5 watts per adapter. If
maximum power is used, the overall system configuration will be limit ed in performance.
Figure 12. USB port
Supply voltageMaximum currentRegulation limits
+5.0 V dc500 mA+5.0% to −4.0%
Figure 13. Internal DASD
Supply voltageMaximum currentRegulation limits
+5.0 V dc1400 mA+5.0% to −5.0%
+12.0 V dc1500 mA at startup, 400 mA when
active
+5.0% to −5.0%
Note: Some adapters and hard disk drives draw more current than the recommended limits. These
adapters and drives can be installed in the system; however, the power supply will shut down if
the total power used exceeds the maximum power that is available.
Output protection
The power supply protects against output overcurrent, overvoltage, and short circuits. See the power
supply specifications on the previous pages for details.
A short circuit that is placed on any dc output (between outputs or between an output and dc return)
latches all dc outputs into a shutdown state, with no damage to the power supply. If this shutdown
Chapter 4. Power supply17
Page 26
Chapter 4. Power supply
state occurs, the power supply returns to normal operation only after the fault has been removed and
the power switch has been turned off for at least one second.
If an overvoltage fault occurs (in the power supply), the power supply latches all dc outputs into a
shutdown state before any output exceeds 130% of the nominal value of the power supply.
Connector description
The power supply for the IntelliStation M Pro has four 4-pin connectors for internal devices. The total
power used by the connectors must not exceed the amount shown in “Component outputs” on
page 17. For connector pin assignments, see Appendix A, “Connector pin assignments” on page 23.
18Technical Information Manual
Page 27
Chapter 5. System software
Chapter 5. System software
This section briefly describes some of the system software included with the computer.
BIOS
The computer uses the IBM basic input/output system (BIOS), which is stored in flash electrically
erasable programmable read-only memory (EEPROM). Some features of the BIOS are:
PCI support in accordance with
Microsoft PCI IRQ Routing Table
Plug and Play support in accordance with
Advanced Power Management (APM) support according to
Wake on LAN support
Wake on Ring support
Alert on LAN support
Remote program load (RPL) and Dynamic Host Configuration Protocol (DHCP)
Startable CD-ROM support
Flash-over-LAN support
Alternate startup sequence
IBM look and feel, such as screen arrangements
ACPI (Advanced Configuration and Power Interfaces) 1.0b
IDE logical block addressing (LBA) support
LSA 2.0 support
LS120 support
DM BIOS 2.1
PC99 compliance
(DMI 2.0 compliant)
PCI BIOS Specification 2.2
Plug and Play BIOS Specification 1.1a
APM BIOS Interface Specification 1.2
Plug and Play
Support for Plug and Play conforms to the following:
Plug and Play BIOS Specification 1.1a and 1.0
Plug and Play BIOS Extension Design Guide 1.0
Plug and Play BIOS Specification, Errata, and Clarifications 1.0
Guide to Integrating the Plug and Play BIOS Extensions with system BIOS 1.2
Plug and Play Kit for DOS and Windows
POST
IBM power-on self-test (POST) code is used. Also, initialization code is included for the on-board
system devices and controllers.
POST error codes include text messages for determining the cause of an error. For more information,
see Appendix D, “Error codes” on page 37.
Copyright IBM Corp. 1999 19
Page 28
Configuration/Setup Utility program
The Configuration/Setup Utility program provides menus for selecting options for devices, I/O ports,
date and time, system security, start options, advanced setup, and power management.
Chapter 5. System software
More information on using the Configuration/Setup Utility program is provided in
User Guide
.
IntelliStation M Pro
Advanced Power Management (APM)
The IntelliStation M Pro computers come with built-in energy-saving capabilities. Advanced Power
Management (APM) is a feature that reduces the power consumption of systems when they are not
being used. When enabled, APM initiates reduced-power modes for the monitor, microprocessor, and
hard disk drive after a specified period of inactivity.
The BIOS supports APM 1.2. This enables the system to enter a power-managed state, which
reduces the power drawn from the ac electrical outlet. Advanced Power Management is enabled
through the Configuration/Setup Utility program and is controlled by the individual operating system.
For more information on APM, see
IntelliStation M Pro User Guide
.
Advanced Configuration and Power Interface (ACPI)
Advanced Configuration and Power Interface (ACPI) BIOS mode enables the operating system to
control the power-management features of the computer. Not all operating systems support ACPI
BIOS mode. See the operating system documentation to determine if ACPI is supported.
Flash update utility program
The flash update utility program is a stand-alone program to support flash updates. This utility
program updates the BIOS code and can change the machine readable information (MRI) to different
languages.
The flash update utility program is available on the World Wide Web at
http://www.ibm.com/pc/us/intellistation. Look for the Downloadable Files link on this page.
Diagnostic program
The diagnostic program that comes with the IntelliStation M Pro computer is provided on the
Driver and IBM Enhanced Diagnostics CD
use IBM Enhanced Diagnostics to diagnose and repair problems with the computer. You can
download the latest version from http://www.ibm.com/pc/support/desktop/desktop_support.html on the
World Wide Web. For more information on this diagnostic program, see
Guide
.
. It runs independently of the operating system. You can
IntelliStation M Pro User
Device
20Technical Information Manual
Page 29
Chapter 6. System compatibility
Chapter 6. System compatibility
This chapter discusses some of the hardware, software, and BIOS compatibility issues for the
computer.
Hardware compatibility
This section discusses hardware, software, and BIOS compatibility issues that must be considered
when designing application programs.
The functional interfaces are compatible with the following interfaces:
National Semiconductor NS16450 and NS16550A serial communication controllers
Motorola MC146818 Time of Day Clock command and status (CMOS reorganized)
Intel 8254 timer, driven from a 1.193 MHz clock (channels 0, 1, and 2)
Intel 8237 DMA controller, except for the Command and Request registers and the Rotate and
Mask functions; the Mode register is partially supported
Intel 8272 or 82077 diskette drive controllers
Intel 8042 keyboard controller at addresses hex 0060 and hex 0064
All video standards using VGA, EGA, CGA, MDA, and Hercules modes
Parallel printer ports (Parallel 1, Parallel 2, and Parallel 3) in compatibility mode
Use this information to develop application programs. Whenever possible, use the BIOS as a
hardware interface for maximum compatibility and portability of applications.
Hardware interrupts
Hardware interrupts are level-sensitive for PCI interrupts. The interrupt controller clears its in-service
register bit when the interrupt routine sends an End-of-Interrupt (EOI) command to the controller. The
EOI command is sent regardless of whether the incoming interrupt request to the controller is active or
inactive.
The interrupt-in-progress latch is readable at an I/O-address bit position. This latch is read during the
interrupt service routine and might be reset by the read operation or it might require an explicit reset.
Note: For performance and latency considerations, designers might want to limit the number of
devices sharing an interrupt level.
With level-sensitive interrupts, the interrupt controller requires that the interrupt request be inactive at
the time the EOI command is sent; otherwise, a new interrupt request will be detected. To avoid this,
a level-sensitive interrupt handler must clear the interrupt condition (usually by a read or write
operation to an I/O port on the device causing the interrupt). After processing the interrupt, the
interrupt handler:
1. Clears the interrupt
2. Waits one I/O delay
3. Sends the EOI
4. Waits one I/O delay
5. Enables the interrupt through the Set Interrupt Enable Flag command
Copyright IBM Corp. 1999 21
Page 30
Chapter 6. System compatibility
Hardware interrupt IRQ9 is defined as the replacement interrupt level for the cascade level IRQ2.
Program interrupt sharing is implemented on IRQ2, interrupt hex 0A. The following processing occurs
to maintain compatibility with the IRQ2 used by IBM Personal Computer products:
1. A device drives the interrupt request active on IRQ2 of the channel.
2. This interrupt request is mapped in hardware to IRQ9 input on the second interrupt controller.
3. When the interrupt occurs, the system microprocessor passes control to the IRQ9 (interrupt hex
71) interrupt handler.
4. This interrupt handler performs an EOI command to the second interrupt controller and passes
control to the IRQ2 (interrupt hex 0A) interrupt handler.
5. This IRQ2 interrupt handler, when handling the interrupt, causes the device to reset the interrupt
request before performing an EOI command to the master interrupt controller that finishes
servicing the IRQ2 request.
Hard disk drives and controller
Reading from and writing to the hard disk is initiated in the same way as in IBM Personal Computer
products; however, new functions are supported.
Software compatibility
To maintain software compatibility, the interrupt polling mechanism that is used by IBM Personal
Computer products is retained. Software that interfaces with the reset port for the IBM Personal
Computer positive-edge interrupt sharing (hex address 02Fx or 06Fx, where x is the interrupt level)
does not create interference.
Software interrupts
With the advent of software interrupt sharing, software interrupt routines must daisy chain interrupts.
Each routine must check the function value, and if it is not in the range of function calls for that
routine, it must transfer control to the next routine in the chain. Because software interrupts are
initially pointed to address 0:0 before daisy chaining, check for this case. If the next routine is pointed
to address 0:0 and the function call is out of range, the appropriate action is to set the carry flag and
do a RET 2 to indicate an error condition.
Machine-sensitive programs
Programs can select machine-specific features, but they must first identify the machine and model
type. IBM has defined methods for uniquely determining the specific machine type. The machine
model byte can be found through Interrupt 15H, Return System Configuration Parameters function
(AH)=(C0H).
22Technical Information Manual
Page 31
Appendix A. Connector pin assignments
Appendix A.Connector pin assignments
The following figures show the pin assignments for various system board connectors.
Monitor connector
5
10 6
15 11
Figure 14. Monitor port connector pin assignments—SVGA
Pin Signal I/O Pin Signal I/O
1 Red O 2 Green O
3 Blue O 4 Monitor ID 2 - Not
5 Ground 6 Red ground
7 Green ground8 Blue ground
9 +5 V, used by DDC2B10 Ground
1
I
used
11 Monitor ID 0 - Not
used
13 Horizontal syncO 14 Vertical syncO
15 DDC2B clockI/O
Memory connectors
93
1
I 12 DDC2B serial dataI/O
184
Figure 15 (Page 1 of 2). System memory connector pin assignments
Figure 16 (Page 1 of 2). PCI connector pin assignments
PinSignalI/OPinSignalI/O
A1TRST#OB1−12 V dc
A2+12 V dcB2TCKO
A3TMSOB3Ground
A4TDIOB4TDOI
A5+5 V dcB5+5 V dc
A6INTA#IB6+5 V dc
A7INTC#IB7INTB#I
A8+5 V dcB8INTD#I
A9ReservedB9PRSNT1#I
A10+5 V dc B10Reserved
A11ReservedB11PRSNT2#I
A12GroundB12Ground
A13GroundB13Ground
A143.3 V AUXB143.3 V AUX
A15RST#OB15Ground
A16+5 V dc (I/O)B16CLKO
A17GNT#OB17Ground
A18GroundB18REQ#I
A19PCIB19+5 V dc
A20Address/data 30I/OB20Address/data 31I/O
A21+3.3 V dcB21Address/data 29I/O
A22Address/data 28I/OB22Ground
A23Address/data 26I/OB23Address/data 27I/O
A24GroundI/OB24Address/data 25
A25Address/data 24I/OB25+3.3 V dc
A26IDSELOB26C/BE 3#I/O
A27+3.3 V dcB27Address/data 23I/O
A28Address/data 22I/OB28Ground
A29Address/data 20I/OB29Address/data 21I/O
A30GroundI/OB30Address/data 19
A31Address/data 18I/OB31+3.3 V dc
A32Address/data 16I/OB32Address/data 17I/O
A33+3.3 V dcB33C/BE 2#I/O
A34FRAME#I/OB34Ground
A35GroundB35IRDY#I/O
A36TRDY#I/OB36+3.3 V dc
Appendix A. Connector pin assignments25
Page 34
Figure 16 (Page 2 of 2). PCI connector pin assignments
PinSignalI/OPinSignalI/O
A37GroundB37DEVSEL#I/O
A38STOP#I/OB38Ground
A39+3.3 V dcB39LOCK#I/O
A40SMBCLK
A41SMBDATA
A42GroundB42SERR#I/O
A43PARB43+3.3 V dc
A44Address/data 15I/OB44C/BE 1#I/O
A45+3.3 V dcI/OB45Address/data 14I/O
A46Address/data 13B46Ground
A47Address/data 11I/OB47Address/data 12I/O
A48GroundI/OB48Address/data 10I/O
A49Address/data 9B49Ground
A50KeyB50Key
A51KeyB51Key
A52C/BE(0)#I/OB52Address/data 8I/O
A53+3.3 V dcI/OB53Address/data 7I/O
A54Address/data 6B54+3.3 V dc
A55Address/data 4I/OB55Address/data 5I/O
A56Ground I/OB56Address/data 3I/O
A57Address/data 2B57Ground
A58Address/data 0I/OB58Address/data 1I/O
A59+5 V dc B59+5 V dc
A60ACK64#I/OB60ACK64#I/O
A61+5 V dcB61+5 V dc
A62+5 V dcB62+5 V dc
1
1
I/OB40PERR#I/O
I/OB41+3.3 V dc
Appendix A. Connector pin assignments
.
IDE connectors
2
1
40
39
Figure 17 (Page 1 of 2). IDE connector pin assignments
PinSignalI/OPinSignalI/O
1RESETO21NC
1
These assignments are for PCI connector slot one only; for all other slots, the signal for pin A40 is SDONE and for pin A41 is
SBO#
26Technical Information Manual
Page 35
Appendix A. Connector pin assignments
Figure 17 (Page 2 of 2). IDE connector pin assignments
PinSignalI/OPinSignalI/O
2Ground22Ground
3Data bus bit 7I/O23I/O writeO
4Data bus bit 8I/O24NC
5Data bus bit 6I/O25I/O readO
6Data bus bit 9I/O26Ground
7Data bus bit 5I/O27I/O channel readyI
8Data bus bit 10I/O28ALEO
9Data bus bit 4I/O29NC
10Data bus bit 11I/O30Ground
11Data bus bit 3I/O31IRQI
12Data bus bit 12I/O32CS16#I
13Data bus bit 2I/O33SA1O
14Data bus bit 13I/O34PDIAG#I
15Data bus bit 1I/O35SA0O
16Data bus bit 14I/O36SA2O
17Data bus bit 0I/O37CS0#O
18Data bus bit 15I/O38CS1O
19Ground39Active#I
20Key (Reserved)40Ground
29 Ground30 Read data#I
31 Ground32 Head 1 select#O
33 Data rate 134 Diskette change#I
Power supply connector
Figure 19. Power supply connector pin assignments
PinSignal namePinSignal name
1+3.3 V dc11+3.3 V dc
2+3.3 V dc12−12 V dc
3Ground13Ground
4+5 V dc14ON/OFF
5Ground15Ground
6+5 V dc16Ground
7Ground17Ground
8PWR GOOD18−5 V dc
9+5 V dc standby19+5 V dc
10+12 V dc20+5 V dc
Appendix A. Connector pin assignments
Wake on LAN connectors
Figure 20. Wake on LAN connector pin assignments
Pin Description
1 +5 V dc standby
2 Ground
3 Wake on LAN
Alert on LAN connectors
Figure 21. Alert on LAN connector pin assignments
Pin Description
1 SMB Data
2 SMB Clock
3 Intrusion
Tamper detection switch
Figure 22 (Page 1 of 2). Tamper switch pin assignments
Pin Description
1 Ground
28Technical Information Manual
Page 37
Appendix A. Connector pin assignments
Figure 22 (Page 2 of 2). Tamper switch pin assignments
Pin Description
2 Tamper switch
Radio frequency ID
Figure 23. Radio frequency identification (RFID) pin assignments
Pin Description
1 RFID Ant 1
2 Key
3 Ground
4 RFID Ant 2
SCSI high frequency LED connectors
Figure 24. SCSI high frequency LED connector pin assignments
Pin Description
1 Not connected
2 to LED
3 to LED
4 Not connected
CD audio connector
Figure 25. CD audio connector pin assignments
Pin Description
1 CD-in left
2 CD-in Ground
3 CD-in Ground
4 CD-in right
USB port connectors
1
2
3
4
Figure 26 (Page 1 of 2). USB port connector pin assignments
Pin Signal
1 VCC
2 -Data
3 +Data
Appendix A. Connector pin assignments29
Page 38
Figure 26 (Page 2 of 2). USB port connector pin assignments
Pin Signal
4 Ground
Mouse and keyboard port connectors
Appendix A. Connector pin assignments
6
4
2
5
3
1
Figure 27. Mouse port connector pin assignments
PinSignalI/OPinSignalI/O
1 Data I/O2 Reserved I/O
3 Ground 4 +5 V dc
5 Clock I/O6 Reserved
Figure 28. Keyboard port connector pin assignments
PinSignalI/OPinSignalI/O
1 Keyboard data I/O2 Mouse data I/O
3 Ground 4 +5 V dc
5 Keyboard clock I/O6 Mouse clock I/O
Serial port connector
1
5
69
Figure 29. Serial port connector pin assignments
PinSignalI/OPinSignalI/O
1 Data carrier detect I2 Receive data# I
3 Transmit data# O4 Data terminal read O
5 Ground 6 Data set ready I
7 Request to send O8 Clear to send I
9 Ring indicator I
30Technical Information Manual
Page 39
Appendix A. Connector pin assignments
Parallel port connector
13
1
25
14
Figure 30. Parallel port connector pin assignments
PinSignalI/OPinSignalI/O
1 STROBE# I/O2 Data bit 0 I/O
3 Data bit 1 I/O4 Data bit 2 I/O
5 Data bit 3 I/O6 Data bit 4 I/O
7 Data bit 5 I/O8 Data bit 6 I/O
9 Data bit 7 I/O10 ACK# I
11 BUSY I12 PE I
13 SLCT I14 AUTO FD XT# O
15 ERROR# I16 INIT# O
17 SLCT IN# O18 Ground
19 Ground 20 Ground
21 Ground 22 Ground
23 Ground 24 Ground
25 Ground
Appendix A. Connector pin assignments31
Page 40
Appendix B. System address maps
Appendix B.System address maps
The following charts represent how the hard disk stores different types of information. Address ranges
and byte sizes are approx imate.
System memory map
The first 640 KB of system board RAM is mapped starting at address hex 0000000. A 256 byte area and
a 1 KB area of this RAM are reserved for BIOS data. Memory can be mapped differently if POST detects
an error.
Figure 31. System memory map
Address range (decimal)Address range (hex)SizeDescription
0 K – 512 K00000–7FFFF512 KBConventional
512 K – 639 K80000–9FBFF127 KBExtended conventional
639 K – 640 K9FC00–9FFFF1 KBExtended BIOS data
640 K – 767 KA0000–BFFFF128 KBDynamic video memory
display cache
768 K – 800 KC0000 to C7FFF32 KBVideo ROM BIOS
(shadowed)
800 K – 896 KC8000–DFFFF96 KBPCI space, available to
adapter ROMs
896 K – 1 MBE0000–FFFFF128 KBSystem ROM BIOS (main
memory shadowed)
1 MB – 16 MB100000–FFFFFF15 MBPCI space
16 MB – 4096 MB1000000–FFDFFFF4080 MBPCI space (positive decode)
4096 – 4120 MBFFFE0000 – FFFFFFFF128 KBSystem ROM BIOS
Input/output address map
The following figure lists resource assignments for the I/O address map. Any addresses that are not
shown are reserved.
Figure 32 (Page 1 of 3). I/O address map
Address (Hex)Size (bytes)Description
0000–000F16DMA 1
0010–001F16General I/O locations, available to PCI bus
0020–00212Interrupt controller 1
0022–003F30General I/0 locations, available to PCI bus
0040–00434Counter/timer 1
0044–00FF28General I/0 locations, available to PCI bus
00601Keyboard controller byte, reset IRQ
00611PIIX4, system port B
00641Keyboard controller, CMD/STAT byte
0070, bit 71 bitEnable NMI
0070, bits 6:01 bitReal-time clock, address
00711Real-time clock, data
32 Copyright IBM Corp. 1999
Page 41
Appendix B. System address maps
Figure 32 (Page 2 of 3). I/O address map
Address (Hex)Size (bytes)Description
0072–007F14General I/O locations, available to PCI bus
00801POST checkpoint register during POST only
008F1Refresh page register
0080–008F16ICH1, DMA page registers
0090–009115General I/O locations, available to PCI bus
00921PS/2 keyboard controller registers
0093–009F15General I/O locations
00A0–00A12Interrupt controller 2
00A2–00BF30APM control
00C0–00DF31DMA 2
00E0–00EF16General I/O locations, available to PCI bus
00F01BX, Coprocessor Error register
00F1–016F127General I/O locations, available to PCI bus
0170–01778Secondary IDE channel
01F0–01F78Primary IDE channel
0200–02078Available
0220–02278SMC 37C673, Serial port 3 or 4
0228–027780General I/O locations, available to PCI bus
0278–027F8SMC 27C673, LPT3
0280–02E7102Available
02E8–02EF8SMC PC37C673, Serial port 3 or 4
02F8–02FF8COM2
0338–033F8SMC PC37C673, serial port 3 or 4
0340–036F48Available
0370–03712SMC SIO system board Plug and Play index,data registers
0372–03754Available
0376–03772IDE channel 1 command
0378–037F8LPT2
0380–03B352Available
03B4–03B74Video
03BA1Video
03BC–03BE16LPT1
03C0–03CF16Video
03D4–03D74Video
03DA1Video
03D0–03DF11Available
03E0–03E78Available
03E8–03EF8COM3 or COM4
03F0–03F56Diskette channel 1
03F61Primary IDE channel command port
03F7 (Write)1Diskette channel 1 command
03F7, bit 71 bitDiskette disk change channel
03F7, bits 6:07 bitsPrimary IDE channel status port
Appendix B. System address maps33
Page 42
Figure 32 (Page 3 of 3). I/O address map
Address (Hex)Size (bytes)Description
03F8–03FF8COM1
0400–047F128Available
0480–048F16DMA channel high page registers
0490–0CF71912Available
0CF8–0CFB4PCI Configuration address register
0CFC–0CFF4PCI Configuration data register
LPTn + 400h8ECP port, LPTn base address + hex 400
0CF91Turbo and reset control register
0D00–FFFF62207Available
DMA I/O address map
The following figure lists resource assignments for the DMA address map. Any addresses that are not
shown are reserved.
00 1F 01 Intel 82371AB IDE bus master
00 1F 02 Intel 82371AB USB
00 1F 0 Intel 82371AB Interface bridge registers
00 1F 5 AC '97 audio controller
02 X 00 PCI connectors
Function number
(hex)
Description
registers
2
Upper byte of memory address register.
Appendix B. System address maps
35
Page 44
Appendix C.IRQ and DMA channel assignments
The following figures list the interrupt request (IRQ) and direct memory access (DMA) channel
assignments.
Figure 34. IRQ channel assignments
IRQSystem resource
NMI Critical system error
SMI System management interrupt for power management
0 Reserved (interval timer)
1 Reserved (keyboard)
2 Reserved, cascade interrupt from slave PIC
3 COM2
4 COM1
5 LPT2/audio (if present)
6 Diskette controller
7 LPT1
8 Real-time clock
9 Video
10 Available to user
11 Available to user
12 Mouse port
13 Reserved (math coprocessor)
14 Primary IDE (if present)
15 Secondary IDE (if present)
POST error messages appear when, during startup, POST finds problems with the hardware or a change
in the hardware configuration. POST error messages are 3-, 4-, 5-, 8-, or 12-character alphanumeric
messages.
Beep codes
Beep codes are a series of tones in sets of two or three that sound when there are POST errors. The
beep pattern represents numeric v alues and provide further information about the location of a potential
problem.
Copyright IBM Corp. 1999 37
Page 46
Appendix E. Notices and trademarks
Appendix E.Notices and trademarks
References in this publication to IBM products, programs, or services do not imply that IBM intends to
make these available in all countries in which IBM operates. Any reference to an IBM product, program,
or service is not intended to state or imply that only that IBM product, program, or service may be used.
Subject to IBM’s valid intellectual property or other legally protectable rights, any functionally equivalent
product, program, or service may be used instead of the IBM product, program, or service. The evaluation
and verification of operation in conjunction with other products, except those expressly designated by IBM,
are the responsibility of the user.
IBM may have patents or pending patent applications covering subject matter in this document. The
furnishing of this document does not give you any license to these patents. You can send license
inquiries, in writing, to:
IBM Director of Licensing
IBM Corporation
North Castle Drive
Armonk, NY 10504-1785
U.S.A.
Any references in this publication to non-IBM Web sites are provided for convenience only and do not in
any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part
of the materials for this IBM product and use of those Web sites is at your own risk.
The following terms are trademarks of the IBM Corporation in the United States or other countries or both:
Alert on LANIBM
IntelliStationWake on LAN
Intel, Pentium, and MMX are trademarks of Intel Corporation in the United States, other countries, or both.
Microsoft, Windows, and Windows NT are trademarks of Microsoft Corporation in the United States, other
countries, or both.
Other company, product, and service names may be trademarks or service marks of others.
38 Copyright IBM Corp. 1999
Page 47
References
Advanced Power Management (APM) BIOS
Interface Specification 1.2/
Source: Intel Corporation
AT Attachment Interface with Extensions
Source: American National Standard of Accredited
Standards Committee
Extended Capabilities Port: Specification Kit
Source: Microsoft Corporation
Intel Microprocessor and Peripheral Component
Literature
Source: Intel Corporation
PCI BIOS Specification 2.0
Source: PCI Special Interest Group
PCI Local Bus Specification 2.1
Source: PCI Special Interest Group
Plug and Play BIOS Specification 1.1
Source: Microsoft Corporation; available at
http://www.microsoft.com/hwdev
Plug and Play BIOS Specification, Errata and
Clarifications 1.0
Source: Microsoft Corporation
Universal Serial Bus Specifications
Source:
Video Electronics Standards Association 1.2
Source:
AT24RF08A- PCID Specification
http://www.usb.org
http://www.vesa.org
Copyright IBM Corp. 1999 39
Page 48
Index
Index
A
ACPI 20
address map
DMA 34
I/O 32
system memory 32
advanced configuration and power interface 20
advanced power management 20
APM (advanced power management) 20
audio
software 22
component maximum current 17
configuration/setup utility program 20
connector
Alert on LAN 28
alert on LAN pin assignments 28
cable 14
connector panel 14
diskette drive 27
diskette drive pin assignments 27
IDE 26
IDE pin assignments 26
keyboard/mouse pin assignments 30
keyboard/mouse ports 30
LAN wake-up pin assignments 28
LAN wakeup 28
connector
controller
current output 17
(continued)
memory pin assignments 23
monitor 23
parallel port 31
parallel port pin assignments 31
PCI 25
PCI pin assignments 25
pin assignments 23
power supply 18, 28
power supply pin assignments 28
RIMM 23
serial pin assignments 30
serial ports 30
USB 29
USB port pin assignments 29
Wake on LAN 28
audio 10
diskette drive 11
hard disk drive 22
I/O 11
keyboard/mouse 12
parallel 12
serial 11
outputs 17
protection, power supply 17
publications, related vii
R
radio frequency identification 29
RAM (random access memory) 32
Rambus dynamic random access memory (RDRAM) 4
random access memory (RAM) 32
RDRAM (Rambus dynamic random access memory) 4
real-time clock 13
references 39
related information vii
S
serial port 11
serial port assignments 11
short circuit 17
software
compatibility 22
interrupts 22
machine-sensitive programs 22
specifications 15
desktop 15
system
compatibility 21
memory 4
memory maps 32
software 19
system board
features 3
layout 3
Universal Serial Bus
technology 6
USB 6
(continued)
V
video
accelerated graphics port (AGP) 7
adapter 7
features 7
graphics adapter 7
memory 10
modes 10
monitor support 10
resources 10
subsystem 7
voltage, input power 16
voltage, output power 16
W
Wake on LAN
cable requirements 13
Wake on LAN support 2
Wake on Ring
Wake on Ring 2
T
tamper switch 28
tamper switch assignments 28
terminology vii
token ring port 12
U
Universal Serial Bus
connectors 29
port 6
42Technical Information Manual
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