SBC comm SBC-350A User Manual
SBC-350A
Half-size All-In-One
386SX-40 CPU Card
Copyright Notice
This document is copyrighted, 1996. All rights are reserved. The
original company 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 the original company. Information provided in this
manual is intended to be accurate and reliable. However, the
original company assumes no responsibility for its use, nor for any
infringements upon the rights of third parties which may result
from its use.
Acknowledgments
The following references are the property of:
ALI is a trademark of ACER Labs, Inc.
AMD is a trademark of Advanced Micro Devices, Inc.
AMI is a trademark of American Megatrends 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.
Part No. 2006350020 3rd Edition
Printed in Taiwan March 1996
Contents
Chapter 1 Hardware configuration .......................... 1
Introduction............................................................................ 2
Specifications.......................................................................... 3
Locating components ............................................................. 4
SBC-350A board diagram ..................................................... 5
Jumpers and connectors ........................................................ 6
SIMM memory modules........................................................ 6
Safety precautions.................................................................. 7
Jumper settings ...................................................................... 7
Card default setting .................................................................. 7
How to set jumpers................................................................ 8
CPU clock and AT clock select (J2, J3, J4, J5)..................... 8
Display type (J6) ................................................................... 8
Card dimensions .................................................................... 9
Chapter 2 Installation ............................................. 11
Initial inspection................................................................... 12
Chapter 3 Connecting peripherals ......................... 15
SBC-350A Card connectors ................................................ 16
Floppy drive connections (CN4)......................................... 16
IDE hard drive connections (CN3) ..................................... 17
Parallel port (CN5).............................................................. 18
Keyboard connectors (CN6, CN12).................................... 18
External switches and indicators........................................ 19
Reset switch (J1) ................................................................. 19
Power LED and keylock (CN1) .......................................... 19
Hard disk drive LED (CN2)................................................ 19
SBC power connector(CN9) ............................................... 20
Serial ports............................................................................ 20
RS-232 connections (CN10, CN11).................................... 21
External speaker connector ................................................ 21
Chapter 4 Power-up ................................................ 23
Startup procedure................................................................ 24
Chapter 5 BIOS diagnostics and SETUP ................... 25
POST (Power On Self Tests)............................................... 26
System test and initialization............................................... 26
System configuration verification ....................................... 26
Running the setup program ................................................ 27
BIOS setup main menu ........................................................ 28
Standard CMOS setup ......................................................... 29
Advanced CMOS setup ....................................................... 32
Advanced CHIPSET setup .................................................. 35
Auto configuration with BIOS defaults............................... 36
Auto configuration with power-on defaults ........................ 36
Auto detect hard disk........................................................... 36
Hard disk utility ................................................................... 36
Write to CMOS and exit/do not exit.................................... 36
Appendix A Programming the watchdog timer ... 37
Introduction.......................................................................... 38
Programming ....................................................................... 38
Demo program..................................................................... 39
Appendix B Upgrading ............................................ 41
Installing DRAM (SIMMs) ................................................. 42
CPU upgrading..................................................................... 43
Installing PC/104 modules .................................................. 43
PC/104 Diagrams ................................................................ 45
1
CHAPTER
Hardware
Configuration
This chapter gives background information on the SBC-350A. 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
• Locating components
• Safety precautions
• Configuration – Jumper settings
Chapter 1 Hardware Configuration 1
Introduction
The half-size SBC-350A comes equipped with a 80386SX-40 CPU.
Also included on-board are two serial RS-232 ports, a bi-directional
parallel port, an IDE hard disk drive interface, a floppy disk controller
and a watchdog timer. The watchdog timer ensures that the CPU will
be reset if it stops due to a program or EMI problem, allowing the
SBC-350A to be used in stand-alone systems or in unattended environments. The SBC-350A’ s industrial-grade construction ensures continuous, reliable operation in harsh industrial environments at temperatures
up to 140oF (60oC).
We designed the SBC-350A with SBC (Single Board Computer)
applications in mind. It also incorporates a connector for PC/104
modules (Flat-panel/CRT VGA controller or Flash/RAM/ROM disk).
Built using CMOS technology , the SBC-350A consumes very little
power. Its four SIMM (Single In-line Memory Module) DRAM
sockets accept 256 KB, 1 MB or 4 MB SIMM modules for total onboard memory of 1 to 16 MB.
You can also use this 4-layer CPU card to transform any system into a
16-bit 386 compatible computer, its all-in-one configuration freeing-up
valuable expansion slots. Its highly compact form and numerous
features make it an ideal cost/performance solution for high-end
commercial and industrial applications where high CPU speed and low
mean-time-to-repair are critical.
2 SBC-350A User's Manual
Specifications
åSystem
• CPU: 80386SX-40 MHz, 80486SLC-33 MHz
• Bus interface: ISA (PC/AT) bus
• System performance:
51.9 MHz with an 80386SX-40 MHz CPU
• Data bus: 16 bit
• DMA channels: 7
• Interrupt levels: 15
• Processing ability: 32 bit
• Bus speed: 8 MHz
• Chipset: ALI M1217-40
• Real-time clock/calendar:
Uses Dallas DS-12887 RTC or equivalent chip and quartz oscillator,
powered by a lithium battery for 10 years of data retention
åMemory
• RAM memory: 1 MB to 16 MB
Uses 256Kx9 (SIMM-256-7), 1Mx9 (SIMM-1000-7) or 4Mx9
(SIMM-4000-7) SIMMs with access time of 70 nsec. or less
• Shadow RAM memory: Support for system and video BIOS of up
to 256 KB in 32 KB blocks
åI/O
• IDE hard disk drive interface: Supports up to two IDE (AT bus)
hard disk drives. Can be enabled/disabled
• Floppy disk drive interface:
Supports up to two floppy disk drives, 5.25” (360 KB and 1.2 MB)
and/or 3.5” (720 KB, 1.44 MB and 2.88 MB). Can be enabled/
disabled
Chapter 1 Hardware Configuration 3
• Bi-directional parallel port: Configurable to LPT1, LPT2, LPT3 or
disabled. Standard female DB-25 connector provided
• Serial ports: Dual RS-232 serial ports with 16C550 compatible
UARTs (16-byte FIFO for speeds up to 115 Kbps). Ports can be
individually configured as COM1, COM2 or disabled
åIndustrial features
• Watchdog timer:
The timeout interval is software programmable and can be set
between 2 to 30 sec.. Your program uses hex 043 and 443 to control
the watchdog and set the timeout period
• PC/104 Expansion:
A 64- and 40-pin, 16-bit bus connector for optional PC/104 modules
such as a Flash/RAM/ROM disk module and/or Flat-panel/CRT
VGA module
• Keyboard connectors: A 6-pin mini-DIN keyboard connector is
located on the mounting bracket for easy access. An external
keyboard adapter is also included. An on-board keyboard pin header
connector is also available.
åGeneral
• Max power required: + 5 V @ 1.2 A
• Power supply voltage: +5 V (4.75 V to 5.25 V), +12 V, -12 V
• Operating temperature: 32 to 140oF (0 to 60oC)
• Size: 7.3" (L) x 4.8" (W) (185 mm x 122 mm)
• Weight: 0.55 lbs. (250g)
• EMI: Pending
• MTBF: Pending
Locating components
This section identifies the location of the card's major components. It
also includes a list of the function of each of the card jumpers. The
figure on the following page gives an overall view of the card.
4 SBC-350A User's Manual
CN5
CN4
CN9 J6 COM1 COM2 CN12
FDC37C665
24MHz
SMC
CN13
MAX211
MAX211
ODIN
OEC12C887
AMIBIOS
AMERICAN MEGATRENDS
386SX BIOS
-2
TM
AMIKEY
CN6
CN7,8
CN3
J1
CN1
CN2
Am386
ADVRNCED
MICRO
DEVICES
TM
SX-40
ALI
M1217
SBC-350A PCB Layout
J5,4,3,2
14.318
SIMM
Sockets
SBC-350A HALF-SIZE ISBC PC-386SX-40 REV:.A1
Chapter 1 Hardware Configuration 5
Jumpers and connectors
Connectors on the board link it to external devices such as hard disk
drives, a keyboard or PC/104 modules. In addition, the board has a
number of jumpers which you use to configure it for your application.
The table below lists the function of each of the board jumpers and
connectors. Later sections in this chapter give instructions on setting
jumpers and detailed information on each jumper setting. Chapter 3
gives instructions for connecting external devices to your card.
Jumpers and Connectors
Number Function Page
J1 Reset switch 19
J2,3,4,5 CPU clock and AT clock select 8
J6 Display type - mono, color 8
CN1 Power LED and Keylock 19
CN2 Hard disk driver activity LED 19
CN3 HDD connector 17
CN4 FDD connector 16
CN5 Parallel/printer connector 18
CN6 Keyboard connector 18
CN7/8 PC/104 expansion connector 43
CN9 SBC Power connector 20
CN10 COM1, RS-232 serial port 20
CN11 COM2, RS-232 serial port 20
CN12 Keyboard connector (6-pin mini DIN) 18
CN13 External speaker connector 21
SIMM memory modules
On the left end of the card (away from the mounting bracket) are the
four SIMM (Single In-line Memory Module) sockets which hold the
card’s DRAM memory. If you ordered DRAM SIMMs along with your
card, the SIMMs may already be installed. If not, you should install
them as described in Appendix B.
6 SBC-350A User's Manual
Safety precautions
Follow these simple precautions to protect yourself from harm and
your PC from damage.
1. T o avoid electric shock always disconnect the power from your PC
chassis before you work on it. Don’t touch any components of the
CPU card or other cards while the PC is on.
2. Disconnect power before making any configuration changes. The
sudden rush of power as you connect a jumper or install a card may
damage sensitive electronic components.
3. Always ground yourself to remove any static charge before you
touch your CPU card. Be particularly careful not to touch the chip
connectors. Modern integrated electronic devices, especially CPUs
and memory chips, are extremely sensitive to static electric
discharges and fields. Keep the card in its anti-static packaging
when it is not installed in the PC and place it on a static dissipative
mat when you are working on it. W ear a grounding wrist strap for
continuous protection.
Jumper settings
This section tells how to set the jumpers to configure your card. It
gives the card default configuration and your options for each jumper.
After you set the jumpers and install the card, you will also need to run
the BIOS Setup program (discussed in Chapter 5) to configure the
serial port addresses, floppy/hard disk drive types and system operating parameters. Connections, such as hard-disk cables, appear in
Chapter 3.
Card default settings
We set the card’ s jumpers at the factory for the most popular configuration. If this configuration matches your needs, you may not need to
change the jumpers at all. The default configuration is as follows:
• CPU clock: 33 MHz. (J2, J3, J4, J5)
• Color display is attached (J6)
Chapter 1 Hardware Configuration 7
How to set jumpers
You configure your card to match the needs of your application by
setting jumpers. A jumper is the simplest kind of electric switch. It
consists of two metal pins and a small metal clip (often protected by a
plastic cover) that slides over the pins to connect them. To “close” a
jumper you connect the pins with the clip. T o “open” a jumper you
remove the clip. Sometimes a jumper will have three pins, labeled 1, 2
and 3. In this case you would connect either pins 1 and 2 or 2 and 3.
You may find pair of needle-nose pliers useful for setting the jumpers.
If you have any doubts about the best hardware configuration for your
application, contact your local distributor or sales representative
before you make any changes.
CPU clock and AT clock select (J2, J3, J4, J5)
J2, J3, J4, and J5 are used to adjust the CPU clock and AT clock. Set
the CPU clock according to the base CPU speed. The default setting is
33 MHz.
CPU clock and AT clock select (J2, J3, J4, J5)
J2 J3 J4 J5
40 MHz
33 MHz
25 MHz
20 MHz
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Display type (J6)
This jumper sets the display adapter type attached to your card. If you
are using a monochrome LCD or EL screen which uses a CGA, EGA,
VGA or other color display adapter, set J6 to color.
Monochrome Closed
Color Open (default)
8 SBC-350A User's Manual
Card Dimensions
73.66 26.00
185.00
178.00
PC/104 Module
19.00
80.65
98.50
D4x4
122.00
Unit = mm
Chapter 1 Hardware Configuration 9
19.50
10 SBC-350A User's Manual
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