Aaeon SBC-400 User manual

SBC-400
Half-size 486 All-in-One CPU Card
with Cache

FCC STATEMENT
THIS DEVICE COMPLIES WITH PART 15 FCC RULES.
OPERATION IS SUBJECT TO THE FOLLOWING TWO
CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
HARMFUL INTERFERENCE. (2) THIS DEVICE MUST
ACCEPT ANY INTERFERENCE RECEIVED INCLUDING
INTERFERENCE THAT MAY CAUSE UNDESIRED OPER-
ATION.
THIS EQUIPMENT HAS BEEN TESTED AND FOUND
TO COMPLY WITH THE LIMITS FOR A CLASS "A"
DIGITAL DEVICE, PURSUANT TO PART 15 OF THE
FCC RULES. THESE LIMITS ARE DESIGNED TO
PROVIDE REASONABLE PROTECTION AGAINTST
HARMFUL INTERFERENCE WHEN THE EQUIPMENT
IS OPERATED IN A COMMERCIAL ENVIRONMENT.
THIS EQUIPMENT GENERATES, USES, AND CAN
RADIATE RADIO FREQENCY ENERGY AND , IF NOT
INSTATLLED AND USED IN ACCORDANCE WITH THE
INSTRUCTION MANUAL, MAY CAUSE HARMFUL
INTERFERENCE TO RADIO COMMUNICATIONS.
OPERATION OF THIS EQUIPMENT IN A RESIDEN-
TIAL AREA IS LIKELY TO CAUSE HARMFUL INTER-
FERENCE IN WHICH CASE THE USER WILL BE
REQUIRED TO CORRECT THE INTERFERENCE AT
HIS OWN EXPENSE.

Copyright Notice
This document is copyrighted, 1996, by AAEON Technology Inc.
All rights are reserved. AAEON Technology Inc. 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 AAEON Technology Inc. Information provided in
this manual is intended to be accurate and reliable. However,
AAEON Technology Inc. assumes no responsibility for its use,
nor for any infringements upon the rights of third parties which
may result from its use.
Acknowledgements
ALI is a trademark of Acer Laboratories, Inc.
AMD is a trademark of Advanced Micro Devices, Inc.
AMI is a trademark of American Megatrends, Inc.
Cyrix is a trademark of Cyrix Corporation.
IBM, PC/AT, PS/2 and VGA are trademarks of International
Business Machines Corporation.
Intel and Pentium are trademarks of Intel Corporation.
Microsoft Windows ®is a registered trademark of Microsoft Corp.
SMC is a trademark of Standard Microsystems Corporation.
UMC is a trademark of United Microelectronics Corporation.
All other product names or trademarks are properties of their
respective owners.
Part No. 2006400020 2nd
Edition

Printed in Taiwan March 1996
Packing list
Before you begin installing your card, please make sure that the
following materials have been shipped:
• 1 SBC-400 CPU card
• 1 6-pin mini-DIN dual outlet adapter for keyboard and PS/2
mouse
• 1 Hard disk drive (IDE) interface cable (40 pin)
• 1 Floppy disk drive interface cable (34 pin)
• 1 Parallel port adapter (26 pin)
• PC/104 Expansion connector converter (pin headers)
• PC/104 Module mounting supports
If any of these items are missing or damaged, contact your
distributor or sales representative immediately.

Contents
Chapter 1 General Information ................................ 1
Introduction............................................................................ 2
Features................................................................................... 3
Specifications.......................................................................... 4
Board layout ........................................................................... 6
Card dimensions .................................................................... 7
Chapter 2 Installation ............................................... 9
Jumpers and connectors...................................................... 10
Locating jumpers and connectors .......................................11
Setting jumpers .................................................................... 12
Safety precautions................................................................ 13
Installing the CPU................................................................ 13
Removing a CPU ................................................................... 13
Installing a CPU ..................................................................... 14
CPU type select (JP2, JP3, JP4)............................................. 15
CPU Vcc select (JP5, JP6)..................................................... 16
CPU clock select (JP7, JP8)................................................... 16
Installing DRAM (SIMMs) ................................................. 17
Installing SIMMs ................................................................... 17
Removing SIMMs.................................................................. 17
Selecting cache memory size ............................................... 18
Cache memory select (JP1).................................................... 18
IDE hard drive connections (CN1)..................................... 19
Connecting the hard drive ...................................................... 19
Floppy drive connections (CN2) ......................................... 21
Connecting the floppy drive................................................... 21
Parallel port (CN3) .............................................................. 22
Installing the retaining bracket .............................................. 22
Parallel port DRQ (JP10) and DACK (JP11) ........................ 23

Power supply connections ................................................... 24
Power supply connector (CN4).............................................. 24
Keyboard and PS/2 mouse connectors (CN7, J1) ............. 25
Serial ports............................................................................ 26
RS-232/422/485 select for COMB (JP23, JP39) ................... 26
RS-232/422/485 serial port connections (COMA, COMB) .. 27
Serial ports IRQ select (JP9).................................................. 29
Watchdog timer setup.......................................................... 30
Watchdog timer time-out signal select (JP38) ....................... 30
Watchdog timer programming ............................................... 30
External switches and LEDs ............................................... 32
Power LED and keylock (JP12)............................................. 32
External speaker (JP13) ......................................................... 32
Reset switch (JP14)................................................................ 33
Turbo LED (JP15).................................................................. 33
Turbo switch (JP17)............................................................... 33
Chapter 3 AMI WinBIOS Setup ................................. 35
General information ............................................................ 36
Starting WinBIOS setup......................................................... 36
WinBIOS main menu ............................................................. 36
Using a mouse with WinBIOS setup ..................................... 37
Using the keyboard with WinBIOS setup .............................. 37
Setup...................................................................................... 38
Standard Setup ....................................................................... 38
Advanced Setup ..................................................................... 39
Chipset Setup ......................................................................... 43
Power Management Setup ..................................................... 45
Peripheral Setup ..................................................................... 46
Utility..................................................................................... 48
Security ................................................................................. 49
WinBIOS password support................................................... 49
Anti-virus ............................................................................... 51

Chapter 3 (Cont'd)
Default................................................................................... 52
Original .................................................................................. 52
Optimal .................................................................................. 52
Fail-Safe ................................................................................. 52
Exiting WinBIOS ................................................................. 53
Appendix A Watchdog Timer Demo Program ........ 55
Appendix B Installing PC/104 Modules ................... 59

Chapter 1 General Information 1
1
General
Information
This chapter gives background informa-
tion on the SBC-400.
Sections include:
• Card specifications
• Board layout
CHAPTER

2SBC-400 User's Manual
Introduction
The SBC-400 is an all-in-one CPU card that supports L2 cache sizes
from 128 KB to 512 KB (32 KB x 8, 64 KB x 8, or 128 KB x 8). This
CPU card uses the M1489/M1487 chipsets, which accept Intel, AMD,
Cyrix, or other compatible 486-based CPUs. The SBC-400 is fully PC/
AT compatible, so your software will run without modifications.
On-board features include two high-speed serial ports (RS-232 and
RS-232/422/485) with 16C550 UARTs, one bi-directional parallel
port, and a floppy drive controller. If program execution is halted by a
program bug or EMI, the board's 16-stage watchdog timer can
automatically reset the CPU or generate an interrupt. This ensures
reliability in unmanned or stand-alone systems.
The SBC-400 is built with a high speed local bus IDE controller. This
controller supports (through ATA PIO) mode 3 and mode 4 hard disks,
which enable data transfer rates of over 11 MB/second. It connects up
to two IDE devices, including large hard disks, CD-ROM drives, tape
backup drives, etc. The built-in enhanced IDE controller provides a 4-
layer 32-bit posted write-buffer and a 4-layer 32-bit read-prefetch-
buffer to boost IDE performance.
The SBC-400 supports 5V EDO DRAM. It also provides two 72-pin
SIMM (Single In-line Memory Module) sockets for on-board DRAM.
This gives you the flexibility to configure your system memory from 1
~ 128 MB using the most economical combination of SIMMs.
The SBC-400 also features power management to minimize power
consumption. It uses CMOS components and complies with the
"Green Function" standard.
If you need any additional functions, you can add industry-standard
PC/104 expansion modules. We provide numerous PC/104 modules to
meet your system requirements.

Chapter 1 General Information 3
Features
•Accepts any Intel, AMD, Cyrix, or other compatible processor
•Half-size ISA bus CPU card, fully 486SX/DX/DX2/DX4 compatible
•Built-in 128 KB secondary cache, up to 512 KB
•Up to 128 MB of on-board DRAM; supports 5V EDO DRAM
•Built-in IDE (AT bus) hard disk drive interface, floppy drive controller
•One RS-232 and one RS-232/422/485 selectable serial port; uses 16C550
UARTs with 16-byte FIFO
•One bi-directional parallel port
•32 to 140oF (0 to 60oC) operating temperature
•Watchdog timer, software programmable from 2 to 32 seconds
(16 steps, 2 seconds per step)
•On-board keyboard connector and/or PS/2 mouse
•IDE HDD auto-detection
•Connectors for PC/104 module expansion
•Single +5V power supply
•"Green" function, supports power management

4SBC-400 User's Manual
Specifications
• CPU:Intel 486SX/DX/DX2/DX4, 486SX/DX/DX2/DX4-S;
AMD Am486DX/DX2/DX4, DX2+/DX4+; Cyrix Cx486DX/DX2/M7;
UMC U5
•Bus interface: ISA (PC/AT) bus
• Data bus: 32 bit
• Processing ability: 32 bit
• Chipset: ALI 1489/1487
• RAM memory: 1 MB to 128 MB, two 72-pin sockets
• Shadow RAM memory: Supports system and video BIOS of up to 256 KB
in 32 KB blocks
• L2 Cache memory: On-board 128 KB, up to 512 KB (DIP package)
• Enhanced IDE HDD interface: Supports up to two enhanced IDE (ATA-2
bus) large hard disk drives or other enhanced IDE devices. Supports
mode 3 and mode 4 hard disks (minimum data transfer rate of 11.1 MB/
sec).
• 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 and 2.88 MB).
• Bi-directional parallel port: SPP/EPP/ECP standards.
• Serial ports: One serial RS-232 port and one serial RS-232/RS-422/RS-
485 port, jumper selectable. Both with 16C550 UARTs with 16-byte FIFO
buffer.
• IRQ SELECTION FOR COM PORTS:
COMA: Supports COM 1/2/3/4 & address is selectable; IRQ3/4/11/12
COMB: Supports COM 1/2/3/4 & address is selectable; IRQ3/4/11/12
• BIOS: AMI WinBIOS
• Watchdog timer: The time interval is software selectable from 2 to 32
seconds (16 steps, 2 seconds per step). Can generate a system reset.
• PC/104: 104-pin connector for a 16-bit bus
• DMA channels: 7

Chapter 1 General Information 5
• Interrupt levels: 15
• Keyboard connector: A 6-pin mini DIN keyboard connector is located on
the mounting bracket for easy access. An on-board keyboard 5-pin header
connector is also available.
• PS/2 Mouse connector: Shared with keyboard connector.
• Bus speed: 8 MHz
• System performance: 325 MHz in 80486DX4-100 (Landmark V2.0)
• Max. power requirements: +5 V @ 2.5 A
• Power supply voltage: Single +5 V (4.75 V to 5.25 V)
• Operating temperature: 32 to 140oF (0 to 60oC); must use a cooling fan
when using a DX4-100 CPU or above
• Board size: 7.3" (L) x 4.8" (W) (185 mm x 122 mm)
• Board weight: 1.2 lbs (0.5 Kg)
• Green Function: Yes
• EMI: Pending
• MTBF: Pending

6SBC-400 User's Manual
Board layout
SBC-400 486SX/DX/DX2/DX4 CPU CARD WITH CACHE REV:.A1
SMC
FDC37C665
ODIN
OEC12C887
ALI
M1489
ALI
M1487
16V8
14.318
24MHz
SC464
IMI
MAX213 MAX213
32K8 CACHE RAM 32K8 CACHE RAM 32K8 CACHE RAM 32K8 CACHE RAM
32K8 CACHE RAM
MEGA-KB
AMI BIOS

Chapter 1 General Information 7
Card dimensions
Units=mm
PC/104 Module
185.00 178.00
98.50
122.00
80.65
73.66 26.00
19.00
19.50
D4x4

8SBC-400 User's Manual

Chapter 2 Installation 9
2
Installation
This chapter tells how to set up the SBC-
400 hardware, including instructions on
setting jumpers and connecting peripher-
als, switches and indicators. Be sure to
read the all safety precautions before you
begin the installation procedure.
CHAPTER

10 SBC-400 User's Manual
Jumpers and connectors
Connectors on the board link it to external devices such as hard
disk drives, a keyboard or floppy drives. In addition, the board has
a number of jumpers that allow you to configure your system to
suit your application.
The table below lists the function of each of the board jumpers and
connectors.
Jumpers and connectors
Label Function
JP1 Cache memory select
JP2,3,4 CPU type select
JP5,6 CPU Vcc select
JP7,8 CPU clock select
JP9 Serial port IRQ select
JP10 Parallel port DRQ select
JP11 Parallel port DACK select
JP12 Power LED and keylock
JP13 External speaker
JP14 Reset switch
JP15 Turbo LED
JP17 Turbo switch
JP23,39 RS-232/422/485 select
JP38 Watchdog timer time-out signal select
CN1 Enhanced IDE connector
CN2 FDD connector
CN3 Parallel connector
CN4 Power connector
CN5,6 PC/104 module connectors
CN7 External keyboard connector
J1 Keyboard and/or PS/2 mouse connector
COMA Serial port 1
COMB Serial port 2

Chapter 2 Installation 11
SBC-400 486SX/DX/DX2/DX4 CPU CARD WITH CACHE REV:.A1
SMC
FDC37C665
ODIN
OEC12C887
ALI
M1489
ALI
M1487
16V8
14.318
24MHz
SC464
IMI
MAX211 MAX211
32K8 CACHE RAM 32K8 CACHE RAM 32K8 CACHE RAM 32K8 CACHE RAM
32K8 CACHE RAM
MEGA-KB
AMI BIOS
Locating jumpers and connectors
J1
JP12,13
CN3
JP23
JP7,8
CN2
CN1
CPU
Socket
JP1
SIMM
Socket
CN5
CN6
JP10
JP9
JP5,6
JP4
JP3
JP2
CN4 COMBCOMA
JP39
JP38
Data
RAM
Cache
Tag
RAM
Cache

12 SBC-400 User's Manual
1
3
2
Open Closed
Closed 2-3
Open Closed
Closed 2-3
1 2 3
Setting 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. To “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.
The jumper settings are schematically depicted in this manual as
follows:
A pair of needle-nose pliers may be helpful when working with
jumpers.
If you have any doubts about the best hardware configuration for
your application, contact your local distributor or sales representa-
tive before you make any changes.
Generally, you simply need a standard cable to make most connec-
tions.

Chapter 2 Installation 13
Safety precautions
Warning! Always completely disconnect the power cord
from your chassis whenever you are working on
it.Do not make connections while the power is
on, sensitive electronic components can be
damaged by the sudden rush of power.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. Use a grounding wrist strap at
all times. Place all electronic components on a
static-dissipative surface or in a static-shielded
bag when they are not in the chassis.
Installing the CPU
The SBC-400 CPU card supports most 486 CPUs. The system's
performance depends on the CPU you choose. You can install or
upgrade the CPU in the board's PGA socket by following the
procedures outlined below. If your system has an existing CPU,
you need to remove it before installing the new CPU.
Removing a CPU
1. Disconnect power from the chassis, and unplug all connections
to the CPU card. Then, remove the CPU card from the chassis
by following the instructions in the user's manual for your
chassis.
2. Lift the CPU out of the PGA socket. The old chip may be
difficult to remove. You may find spray chip lubricant, designed
for pin-grid-array (PGA) devices, and a chip puller helpful.
These are available at electronics hobbyists' supply stores.