Advantech PCA-6275 User manual

PCA-6275
Pentium®II processor-based
PCI/ISA-bus CPU card

ii
Copyright notice
This document is copyrighted, 1999, by Advantech Co., Ltd. All rights
are reserved. Advantech Co., Ltd. reserves the right to make
improvements to the products described in this manual at any time
without notice.
No part of this manual may be reproduced, copied, translated or
transmitted in any form or by any means without the prior written
permission of Advantech Co., Ltd. Information provided in this
manual is intended to be accurate and reliable. However, Advantech
Co., Ltd. assumes no responsibility for its use, nor for any in-
fringements upon the rights of third parties which may result from its
use.
Acknowledgements
AWARD is a trademark of AWARD Software, Inc.
AMD is a trademark of Advanced Micro Devices, Inc.
IBM and PC are trademarks of International Business Machines
Corporation.
Intel is a trademark of Intel Corporation.
MS-DOS is a trademark of Microsoft Corporation.
SMC is a trademark of Standard Microsystems Corporation.
NCR is a trademark of NCR Corporation.
All other product names or trademarks are the properties of their
respective owners.
Part No. 2006627510
2nd Edition Printed in Taiwan May 1999

iii
A Message to the Customer
Advantech customer services
Each and every Advantech product is built to the most exacting
specifications to ensure reliable performance in the harsh and
demanding conditions typical of industrial environments. Whether
your new Advantech equipment is destined for the laboratory or the
factory floor, you can be assured that your product will provide the
reliability and ease of operation for which the name Advantech has
come to be known.
Your satisfaction is our primary concern. Here is a guide to
Advantech’s customer services. To ensure you get the full benefit of
our services, please follow the instructions below carefully.
Technical support
We want you to get the maximum performance from your products. So
if you run into technical difficulties, we are here to help. For the most
frequently asked questions, you can easily find answers in your
product documentation. These answers are normally a lot more
detailed than the ones we can give over the phone.
So please consult this manual first. If you still cannot find the answer,
gather all the information or questions that apply to your problem, and
with the product close at hand, call your dealer. Our dealers are well
trained and ready to give you the support you need to get the most
from your Advantech products. In fact, most problems reported are
minor and are able to be easily solved over the phone.
In addition, free technical support is available from Advantech
engineers every business day. We are always ready to give advice on
application requirements or specific information on the
installation and operation of any of our products.

iv
Product warranty
Advantech warrants to you, the original purchaser, that each of its
products will be free from defects in materials and workmanship for
one year from the date of purchase.
This warranty does not apply to any products which have been
repaired or altered by persons other than repair personnel authorized
by Advantech, or which have been subject to misuse, abuse, accident
or improper installation. Advantech assumes no liability under the
terms of this warranty as a consequence of such events.
Because of Advantech’s high quality-control standards and rigorous
testing, most of our customers never need to use our repair service. If
an Advantech product is defective, it will be repaired or replaced at no
charge during the warranty period. For out-of-warranty repairs, you
will be billed according to the cost of replacement materials, service
time and freight. Please consult your dealer for more details.
If you think you have a defective product, follow these steps:
1. Collect all the information about the problem encountered. (For
example, type of PC, CPU speed, Advantech products used, other
hardware and software used, etc.) Note anything abnormal and list
any on-screen messages you get when the problem occurs.
2. Call your dealer and describe the problem. Please have your
manual, product, and any helpful information readily available.
3. If your product is diagnosed as defective, obtain an RMA (return
material authorization) number from your dealer. This allows us to
process your return more quickly.
4. Carefully pack the defective product, a fully-completed Repair and
Replacement Order Card and a photocopy proof of purchase date
(such as your sales receipt) in a shippable container. A product
returned without proof of the purchase date is not eligible for
warranty service.
5. Write the RMA number visibly on the outside of the package and
ship it prepaid to your dealer.

v
Initial Inspection
Before you begin installing your card, please make sure that the
following materials have been shipped:
• 1 PCA-6275 Dual Pentium®II single board computer
• 2 Pentium II CPUs and 2 cooling fans (optional)
• 1 PCA-6275 user's manual
• 1 bus master & BIOS utility driver
• 2 disks, for OBS Win95 drivers
• 1 FDD cable
• 2 EIDE HDD cables
• 1 printer cable
• 2 temperature sensor cables
• 1 ivory cable for keyboard and mouse
• 1 USBcable
• 1 ATX-to-PS/2 power cable
• 1 dual Pentium II CPU retention module
If any of these items are missing or damaged, contact your
distributor or sales representative immediately.
We have carefully inspected the PCA-6275 mechanically and
electrically before shipment. It should be free of marks and scratches
and in perfect working order upon receipt.
As you unpack the PCA-6275, check it for signs of shipping damage.
(For example, damaged box, scratches, dents, etc.) If it is damaged or
it fails to meet the specifications, notify our service department or your
local sales representative immediately. Also notify the carrier. Retain
the shipping carton and packing material for inspection by the carrier.
After inspection, we will make arrangements to repair or replace the
unit.

vi
Contents
Chapter 1 Hardware Configuration.............................. 1
1.1 Introduction ........................................................................2
1.2 Features...............................................................................3
1.3 Specifications ......................................................................4
System ..................................................................................4
Memory ................................................................................4
Input/Output .........................................................................4
Industrial features.................................................................5
Mechanical and environmental specifications .....................5
1.4 Board Layout: Main Features ..........................................6
1.5 Jumpers and Connectors...................................................7
1.6 Board Layout: Jumper and Connector Locations..........9
1.7 Safety Precautions............................................................10
1.8 Jumper Settings................................................................11
1.8.1 How to set jumpers ...................................................11
1.8.2 CPU core frequency (J1)...........................................11
1.8.3 Watchdog timer output (J2).......................................13
1.8.4 CMOS clear (J4) .......................................................13
1.9 System Memory................................................................14
1.9.1 Sample calculation: DIMM memory capacity ..........11
1.9.2 Supplementary information about DIMMs...............11
1.10 Memory Installation Procedures ....................................16
1.11 Cache Memory .................................................................17
1.12 Mounting the CPU and Cooling Modules......................18
1.13 On-board Support Bracket .............................................21
Chapter 2 Connecting Peripherals ............................ 23
2.1 Primary (CN1) and Secondary (CN2) IDE
Connectors ........................................................................24
2.2 IR Connector (CN3).........................................................24
2.3 USB Connector (CN4) .....................................................25
2.4 Parallel Port Connector (CN5) .......................................25

vii
2.5 ATX Power Control Connectors (CN6 and J3).............26
2.5.1 ATX feature connector (CN6) and soft power switch
connector (J3).............................................................26
2.5.2 Controlling the soft power switch.............................27
2.6 Floppy Drive Connector (CN7).......................................27
2.7 CPU Fan Connectors (CN9, CN8) ..................................27
2.8 Front Panel Connectors
(CN10, CN11, CN12, CN13 and J3)................................28
2.8.1 External speaker (CN10)...........................................28
2.8.2 Keyboard lock and power on LED (CN11) ..............28
2.8.3 IDE LED (CN12) ......................................................28
2.8.4 Reset LED (CN13)....................................................28
2.8.5 ATX soft power switch (J3) ......................................28
2.9 External Suspend Switch Lead (SMI) (CN14) ..............29
2.10 Serial Ports (CN15: COM1; CN16: COM2)..................29
2.11 External Keyboard Connector (CN17) ..........................30
2.12 Keyboard & PS/2 Mouse Connector (CN18) ................30
2.13 CPU Temperature Sensors
(CPU1: TR1; CPU2: TR2) ..............................................30
Chapter 3 Award BIOS Setup ..................................... 31
3.1 Introduction ......................................................................32
3.2 Entering Setup..................................................................32
3.3 Standard CMOS Setup....................................................33
3.4 BIOS Features Setup .......................................................34
3.4.1 Virus Warning ...........................................................34
3.4.2 Quick Power On Self Test.........................................35
3.4.3 Boot Sequence...........................................................35
3.4.4 Boot Up Floppy Seek ................................................35
3.4.5 Boot Up NumLock Status .........................................36
3.4.6 Gate A20 Option .......................................................36
3.4.7 Typematic Rate Setting .............................................36
3.4.8 Typematic Rate (Chars/Sec)......................................36
3.4.9 Typematic Delay (msec) ...........................................36
3.4.10 Security Option .......................................................36

viii
3.4.11 PCI/VGA Palette Snoop..........................................37
3.4.12 OS Select for DRAM > 64 MB...............................37
3.4.13 Video BIOS Shadow ...............................................37
3.4.14 C8000-CBFFF Shadow / DC000-DFFFF Shadow .37
3.5 Chipset Features Setup....................................................38
3.6 Power Management Setup ..............................................39
3.6.1 Power Management...................................................39
3.6.2 HDD Power Management .........................................39
3.6.3 Soft-Off by PWR-BTTN...........................................40
3.6.4 IRQ Activity..............................................................40
3.7 PCI Configuration Setup.................................................40
3.7.1 IRQ-xx assigned to : PCI/ISA PnP ...........................41
3.7.2 DMA-x assigned to : PCI/ISA PnP ...........................41
3.7.3 Used MEM base addr : N/A......................................41
3.8 Load BIOS Defaults.........................................................42
3.9 Load Setup Defaults.........................................................42
3.10 Integrated Peripherals.....................................................42
3.11 Password Setting ..............................................................43
3.12 IDE HDD Auto Detection ................................................43
3.13 Save & Exit Setup ............................................................44
3.14 Exit Without Saving.........................................................44
Chapter 4 On-board Security Setup........................... 45
4.1 Introduction ......................................................................46
4.2 Installation of OBS Devices.............................................46
4.3 Driver Installation............................................................47
4.3.1 Necessary prerequisites.............................................47
4.3.2 Before you begin .......................................................47
4.3.3 Windows 95 drivers setup procedure ........................48
Appendix A Programming the Watchdog Timer ....... 59
A.1 Programming the Watchdog Timer ...............................60
Appendix B Pin Assignments .................................... 63
B.1 COM1/COM2 RS-232 Serial Port (CN15, CN16).........64
B.2 Keyboard and Mouse Connnector (CN18) ....................64

ix
B.3 External Keyboard Connector (CN17) ..........................64
B.4 ATX Feature Connector (CN6).......................................65
B.5 IDE Hard Drive Connector (CN1, CN2)........................65
B.6 USB Connector (CN4) .....................................................66
B.7 CPU Fan Power Connectors (CN8, CN9) ......................66
B.8 Floppy Drive Connector (CN7).......................................67
B.9 Parallel Port Connector (CN5) .......................................68
B.10 IR Connector (CN3).........................................................69
B.11 HDD LED Connector (CN12) .........................................69
B.12 Power LED and Keylock Connector (CN11).................69
B.13 External Speaker (CN10) ................................................70
B.14 System I/O Ports ..............................................................71
B.15 DMA Channel Assignments ............................................72
B.16 Interrupt Assignments.....................................................72
B.17 1st MB Memory Map ......................................................73

x

Hardware Configuration
This chapter gives background
information on the PCA-6275. It then
shows you how to configure the card to
match your application and prepare it for
installation into your PC.
Sections include:
• Card specifications
• Board layout
• Safety precautions
• Jumper settings
1
CHAPTER

2 PCA-6275 User's Manual
1.1 Introduction
The PCA-6275 industrial grade CPU card uses two of Intel's highly
acclaimed Pentium®II processors, together with the Intel 440BX PCI
chipset. The card works with standard ISA or PCI/ISA-bus passive
backplanes.
The CPU provides 512 KB on-chip L2 cache, eliminating the need for
external SRAM chips. It has two PCI EIDE interfaces (for up to four
devices), and an FDD interface (for up to two devices). Other features
include two RS-232 serial ports (16C550 UARTs with 16-byte FIFO
or compatible), one enhanced parallel port (supports EPP/ECP), and
support for two USB (Universal Serial Bus) ports. The PCI Bus
Master IDE controller supports Ultra DMA/33 operation. This
provides data transfer rates of over 33 MB/sec. System BIOS supports
boot-up from an IDE CD-ROM, SCSI CD-ROM and LS-120.
A backup of CMOS data is stored in the Flash memory, which
protects data even after a battery failure. Also included is a 63-level
watchdog timer, which resets the CPU or generates an interrupt if a
program cannot be executed normally. This enables reliable operation
in unattended environments.

Chapter 1 Hardware Configuration 3
1.2 Features
• Intel slot 1architecture
• Dual Pentium®II processors up to 500 MHz
• Intel 82440BX PCIset, FSB 66/100 MHz
• Three DIMM sockets to support Intel PC100-compliant SDRAMs up
to 768 MB; supports ECC
• Award Flash BIOS, 2 Mbit
• On-board ATX power control connector to meet ACPI
requirements
• Two enhanced IDE ports, supporting Ultra DMA/33, PIO Mode 4
and DMA Mode 2
• Two USB ports
• Two serial ports
• One bidirectional parallel port, supports ECP/EPP/SPP
• One floppy port and one keyboard/mouse port
• PCI V2.1 compliant
• PICMG 2.0 compliant
• Additional metal bracket to provide board stability with Pentium II
processor
• CMOS backup battery life of 7 years
• HISA (ISA High Drive)
• On-board security for hardware monitoring

4 PCA-6275 User's Manual
1.3 Specifications
System
•CPU: Intel Pentium®II up to 500 MHz
•BIOS: Award Flash BIOS, 2 Mbit
•Green function: Supports power management operation via BIOS.
Activated by keyboard or mouse activity
•PCI enhanced IDE hard disk drive interface: Supports up to four
IDE (AT bus) large hard disk drives , or other enhanced IDE
devices. Supports PIO Mode 4 (16.67 MB/s data transfer rate) and
Ultra DMA/33 (33 MB/s data transfer rate). BIOS enabled/disabled
•Floppy disk drive interface: Supports up to two floppy disk drives,
5¼" (360 KB and 1.2 MB) and/or 3½" (720 KB, 1.44 MB, and 2.88
MB). BIOS enabled/disabled
Memory
•RAM: Up to 768 MB in three available 168-pin DIMM sockets.
Supports PC100-compliant SDRAMs
•ECC (parity DRAM only): Modules can detect multi-bit memory
errors. Correction of 1-bit memory errors
Input/Output
•Bus interface: PCI/ISA bus, PICMG compliant
•Bus speed:
ISA: 8 MHz
PCI: 33 MHz
•DMA channels: 7
•Interrupt levels: 15
•Enhanced parallel port: Configurable to LPT1, LPT2, LPT3 or
disabled. Standard DB-25 female connector provided. Supports
EPP/ECP/SPP

Chapter 1 Hardware Configuration 5
•Serial ports: Two RS-232 ports with 16C550 UARTs (or
compatible) with 16-byte FIFO buffer. Supports speeds up to 115.2
Kbps. Ports can be individually configured to COM1, COM2 or
disabled
•Keyboard and PS/2 mouse connector: A 6-pin mini DIN
connector is located on the mounting bracket for easy connection to
a keyboard or PS/2 mouse. An on-board keyboard pin header
connector is also available
•ISA driver current: 64 mA (High Drive)
Industrial features
•Watchdog timer: Can generate a system reset or IRQ11. The
watchdog timer is programmable, with each unit equal to one second
(63 levels). The program uses I/O ports hex 443h to control the
watchdog timer
Mechanical and environmental specifications
•Operating temperature: 0 ~ 60° C (32 ~ 140° F)
•Storage temperature: -40 ~ 60° C (-40 ~ 140° F)
•Humidity: 20 ~ 95% non-condensing
•Power supply voltage: +5 V, ±12 V
•Power consumption:
+5 V @ 5.71 A (for dual Pentium®II 400 MHz)
+5 V @ 6.26 A (for dual Pentium®II 450 MHz)
•Board size: 338 x 122 mm (13.3" x 4.8")
•Board weight: 0.5 kg (1.2 lbs)

6 PCA-6275 User's Manual
1.4 Board Layout: Main Features
ATX power control
connector
Bi-directional
parallel port
Accommodates three DIMM
modules, up to 768 MB
Intel Pentium®II
processor up to 500
MHz
Intel 82440BX PCIset
PS/2 mouse & keyboard connector
USB port
EIDE
connector
COM1 connector
COM2 connector
Metal
bracket
for
stability
FDD connector

Chapter 1 Hardware Configuration 7
1.5 Jumpers and Connectors
Connectors on the PCA-6275 board link it to external devices such as
hard disk drives and a keyboard. In addition, the board has a number
of jumpers used to configure your system for your application.
The tables below list the function of each of the board jumpers and
connectors. Later sections in this chapter give instructions on setting
jumpers. Chapter 2 gives instructions for connecting external devices
to your card.
Table 1-1: Jumpers
Label Function
J1 CPU core frequency
J2 Watchdog output
J3 ATX soft power switch
J4 Clear CMOS

8 PCA-6275 User's Manual
Table 1-2: Connectors
Label Function
CN1 Primary IDE connector
CN2 Secondary IDE connector
CN3 Infrared (IR) connector
CN4 USB port
CN5 Parallel port
CN6 ATX feature connector
CN7 Floppy driver connector
CN8 CPU 2 fan power connector
CN9 CPU 1 fan power connector
CN10 External speaker
CN11 Keyboard lock and power LED
CN12 IDE LED
CN13 Reset connector
CN14 External SMI
CN15 Serial port: COM1
CN16 Serial port: COM2
CN17 External keyboard connector
CN18 PS /2 keyboard and mouse
RT1 CPU 1 temperature sensor
RT2 CPU 2 temperature sensor

Chapter 1 Hardware Configuration 9
1.6 Board Layout: Jumper and Connector
Locations
Figure 1-1: Board layout: jumper and connecter locations
DIMM3 DIMM2 DIMM1
CN2 CN1
CN8 CN7
CN3 CN4 CN15 CN16 CN18
CN17
SLOT 1 Secondary
SLOT 1 Primar y
440 BX CN11
CN14
J4
CN13
RT1 RT2
CN6
CN12
J2
J3
CN10
CN8
CN9

10 PCA-6275 User's Manual
1.7 Safety Precautions
Warning! Always completely disconnect the power cord from
your chassis whenever you work with the hardware.
Do not make connections while the power is on.
Sensitive electronic components can be damaged
by sudden power surges.Only experienced
electronics personnel should open the PC chassis.
Caution! Always ground yourself to remove any static charge
before touching the CPU card.Modern electronic
devices are very sensitive to static electric charges.
As a safety precaution, use a grounding wrist strap
at all times. Place all electronic components in a
static-dissipative surface or static-shielded bag when
they are not in the chassis.