AAEON SBC-490
Specifications
System Chipset
ALI 1489/1487
Form Factor
PICMG 1.0
Datasheet
Extracted Text
SBC-490
Full-size 486 PCI/ISA-bus CPU Card
with SVGA interface
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.
Award is a trademark of Award Software International, Inc
Cyrix is a trademark of Cyrix Corporation.
IBM, PC/AT, PS/2, OS/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.
TGUI9440GUI is a trademark of Trident Microsystems, Inc.
All other product names or trademarks are properties of their
respective owners.
Part No. 2006490021 for SBC-490 B1 1st Ed. (AMI)
Printed in Taiwan March 1997
Packing list
Before you begin installing your card, please make sure that the
following materials have been shipped:
• 1 SBC-490 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) and COM2 adapter (9 pin) kit
• 1 utility disk (Flash BIOS program, Watchdog for Windows
Library, and Demo Program)
• 4 utility disks with SVGA utility programs
• 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 ................................................................ 14
Removing a CPU................................................................. 14
Installing the CPU ............................................................... 14
CPU type select (JP8, JP9, JP10) ........................................ 15
CPU Vcc select (JP1, JP7) .................................................. 16
CPU clock select (JP13, JP14) ............................................ 16
Installing DRAM (SIMMs) ................................................. 17
Installing SIMMs ................................................................ 17
Removing SIMMs ............................................................... 17
SIMM Module Installation Table....................................... 18
Selecting cache memory size ............................................... 19
Cache memory select (JP12) ............................................... 19
IDE hard drive connections ................................................ 20
Connecting the hard drive ................................................... 20
IDE LED (JP2, JP3) ............................................................ 21
Floppy drive connections..................................................... 22
Connecting the floppy drive ................................................ 22
Parallel port .......................................................................... 23
Installing the retaining bracket............................................ 23
Power supply connections ................................................... 24
Power supply connector ...................................................... 24
CPU fan power connector ................................................... 24
Display connections.............................................................. 25
Keyboard and PS/2 mouse connectors ............................... 26
On-Board VGA Settings ...................................................... 26
Serial ports............................................................................ 27
RS-232 connections (COMA, COMB) ............................... 27
Serial ports IRQ select (JP18) ............................................. 28
Watchdog timer setup ......................................................... 29
Watchdog timer time-out
signal select (JP16).............................................................. 29
Watchdog timer programming ............................................ 29
Flash BIOS Protect (JP11) .................................................. 30
Clear CMOS (JP15) ............................................................. 30
External Switches and LEDs............................................... 31
Power LED and keylock ..................................................... 31
External speaker .................................................................. 31
Reset switch ........................................................................ 32
Turbo LED .......................................................................... 32
Turbo switch........................................................................ 32
Chapter 3: AMI WinBIOS Setup .................................. 33
General information ............................................................ 34
Starting WinBIOS setup...................................................... 34
WinBIOS main menu .......................................................... 34
Using a mouse with WinBIOS setup .................................. 35
Using the keyboard with WinBIOS setup ........................... 35
Setup ...................................................................................... 36
Standard Setup .................................................................... 36
Advanced Setup................................................................... 37
Chipset Setup ...................................................................... 42
Power Management Setup................................................... 44
PCI/PnP Setup ...................................................................... 45
Peripheral Setup .................................................................. 47
Utility..................................................................................... 49
Security ............................................................................... 50
Two Levels of Passwords.................................................... 50
Setting a Password .............................................................. 51
Changing a password .......................................................... 52
Anti-virus ............................................................................ 52
Default ................................................................................... 53
Original ............................................................................... 53
Optimal ................................................................................ 53
Fail-Safe .............................................................................. 53
Exiting WinBIOS ................................................................. 54
Chapter 4: SVGA Setup .............................................. 55
SVGA driver installation..................................................... 56
Installing from Windows .................................................... 56
Screen Control...................................................................... 58
Advanced features (Virtual Screen Control) ....................... 60
DPMS (Display Power Management Signaling) ............... 63
Delay Time .......................................................................... 64
Activity Select ..................................................................... 64
Clock ................................................................................... 64
Password Option ................................................................. 65
Startup On/Off..................................................................... 65
Default ................................................................................. 65
Test ...................................................................................... 65
Save ..................................................................................... 65
Display driver Uninstallation.............................................. 66
Microsoft Windows NT ....................................................... 67
Installation ........................................................................... 67
Microsoft Windows NT 3.5 Installation ............................. 67
Microsoft Windows NT4.0 ................................................. 68
Procedure to install display drivers: .................................... 68
Microsoft Windows 95........................................................ 69
Procedure to install display drivers: .................................... 69
OS/2..................................................................................... 70
Procedure to install display drivers: .................................... 70
Display Drivers Setting Procedure ...................................... 71
Utilities installation .............................................................. 73
Utilities summary ................................................................ 74
SMONITOR ........................................................................ 76
TVGACRTC ....................................................................... 77
Software drivers installation ............................................... 79
Appendix A: Watchdog Timer Demo Program ......... 81
DOS Demo Program ............................................................ 82
Appendix B: Installing PC/104 Modules .................... 85
Installing PC/104 modules................................................... 86
1
General
Information
This chapter gives background informa-
tion on the SBC-490.
Sections include:
• Card specifications
• Board layout
Chapter 1 General Information 1
CHAPTER
Introduction
The SBC-490 is an all-in-one single board 486 computer that includes
an on-board SVGA controller, with PCI-bus and ISA-bus support.
It packs all the functions of an industrial computer with display
capabilities on a single full-size card. The SBC-490 is fully PC/AT
compatible, so your software will run without modifications.
The SBC-490 is excellent for display-intensive applications. The on-
board PCI-bus SVGA controller uses the Trident TGUI9440GUi
chipset with the local PCI-bus to enable 32-bit graphic throughput at
up to 33 MHz. Also built in is a standard Feature Connector.
In addition, the SBC-490 features a high speed PCI-bus IDE control-
ler, which connects up to four IDE devices, including large hard disks,
CD-ROM drives, tape backup drives or other IDE devices. It supports
(through ATA PIO) mode 3 and mode 4 hard disks, enabling transfer
rates of over 11 MB/sec. 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.
On-board features also include two high-speed RS-232 serial ports
with 16C550 UARTs, one bidirectional SPP/EPP/ECP parallel port
and one floppy drive controller. In addition to the 486's 8 KB of on-
chip cache memory, the SBC-490 comes with an extra 128 KB or 512
KB of second level memory on-board.
If program execution is halted by a program bug or EMI, the board's
15-stage watchdog timer can automatically reset the CPU or generate
an interrupt. This ensures reliability in unmanned or stand-alone
systems.
The SBC-490 supports 5V EDO DRAM. It also provides four 72-pin
SIMM (Single In-line Memory Module) sockets for its on-board
system DRAM. These sockets give you the flexibility to configure
your system from 1 MB to 128 MB of DRAM using the most eco-
nomical combination of SIMMs. For optimal power management, the
SBC-490 also supports the "Green" function.
2 SBC-490 User's Manual
Features
• Accepts Intel, AMD, Cyrix or other 486-compatible processors, including
the P24T Pentium Overdrive processor
• Fully PC/AT-compatible PCI/ISA-bus CPU card
• On-board 32-bit PCI-bus SVGA controller
• Built-in fast PCI enhanced IDE controller; supports four IDE devices (large
hard disks, CD-ROM, tape backup, etc.)
• Up to 128 MB of on-board DRAM
• Supports 5 V EDO DRAM
• Two high-speed serial RS-232 ports (16C550 UARTs with 16-byte FIFO);
IRQ3, 4, 10, 11 can be individually selected
• One enhanced bidirectional parallel port; supports SPP/EPP/ECP
• Watchdog timer (15 steps, 2 seconds per step)
• On-board keyboard and PS/2 mouse connector
• Connectors for PC/104 module expansion
• "Green" function; supports power management
• On-board feature connector
• Supports Flash BIOS, and BIOS can be upgraded easily
Chapter 1 General Information 3
Specifications
• CPU: 80486SX/DX/DX2/DX4-25/33/40/50/66/75/100/120 MHz, AMD/
Cyrix 5x86-100/120/133 MHz or Pentium Overdrive processor
• Bus interface: ISA (PC/AT) and PCI bus
• Data bus: 32 bit
• Processing ability: 32 bit
• Chipset: ALI/1489/1487
• RAM memory: 1 MB to 128 MB. Uses four 72-pin SIMM sockets
• L2 Cache memory size: 128/256/512 KB 2nd level cache memory
• Shadow RAM memory: Supports system and video BIOS shadow
memory
• Display controller: SVGA, PCI-bus, Trident TGUI9440GUI chipset with
1 MB standard video memory, upgradable to 2 MB. Provides 32-bit
graphic throughput. Supports resolutions up to 1280 x 1024 in 256 colors,
1024 x 768 in 64K colors, 800 x 600 in 64K colors, or 640 x 480 in 16.8
million colors
• Feature connector: 26-pin header
• Enhanced IDE hard disk drive interface: Fast PCI bus. Supports up to
four enhanced IDE hard disk drives or other IDE devices.
• 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)
• Bidirectional parallel port: Configurable to LPT1, LPT2, LPT3 or
disabled. Supports SPP/EPP/ECP standards
• Serial ports: Two serial RS-232 ports; use 16C550 UARTs with 16-byte
FIFO buffer. Supports speeds up to 115 Kbps. Ports can be individually
configured from COM1 to COM4 or disabled.
• Flash BIOS: SST 29EE010 Flash memory on board. BIOS can be
upgraded easily.
• Watchdog timer: Can generate a system reset, NMI or IRQ15. The time
interval is software selectable from 2 to 32 seconds (15 steps, 2 seconds
per step).
4 SBC-490 User's Manual
• PC/104: 104-pin connector for a 16-bit bus
• DMA channels: 7
• Interrupt levels: 15
• Keyboard or PS/2 mouse connector: A 6-pin mini DIN keyboard
connector is located on the mounting bracket for easy access to the
keyboard and PS/2 mouse.
• Bus speed: 8 MHz (up to 12 MHz) for ISA bus; 20/25/33 MHz for PCI bus
(dependent on CPU clock speed)
• System performance: 325 MHz with a 80486 DX4-100 (Landmark V2.0)
• Max. power requirements: +5 V @ 2 A
• Power supply voltage: +5 V (4.75 V to 5.25 V), +12 V, -12 V
• Operating temperature: 32 to 140° F (0 to 60° C); a cooling fan is needed
for DX4-100, 5x86 and P24T CPUs.
• Board size: 13.3" (L) x 4.8" (W) (338 mm x 122 mm)
• Board weight: 1.2 lbs (0.5 kg)
Chapter 1 General Information 5
ALI
M1489
ALI
M1487
Board layout
SMC
FDC37C665
6 SBC-490 User's Manual
32K8 CACHE RAM
32K8 CACHE RAM
Trident
DS14185
TGUI9440AGi
32K8 CACHE RAM
DS14185
TC5142560BJ-70 TC5142560BJ-70
32K8 CACHE RAM
32K8 CACHE RAM 24.00
AWARD
AWARD SOFTWARE INC
BIOS ISA 486
TM
ODIN
-2
AMIKEY
OEC12C887
IMI
SC464
16V8
14.318
SBC-490 486SX/DX/DX2/DX4 CPU Card Rev. B1
Card dimensions
4.803"
0.608"
0.315"
3.174"
0.228"
1.874"
0.478"
13.327"
2.470"
0.076"
0.570"
1.861"
1.673"
Chapter 1 General Information 7
8 SBC-490 User's Manual
2
Installation
This chapter describes how to set up the
SBC-490 hardware, including instructions
on setting jumpers and connecting
peripherals, switches and indicators. Be
sure to read all safety precautions before
you begin the installation procedure.
Chapter 2 Installation 9
CHAPTER
Jumpers and connectors
Connectors on the board link it to external devices such as hard
disk drives, keyboard or floppy drives. In addition, the board has a
number of jumpers that allow you to configure your system to suit
your applications.
The table below lists the function of each of the board jumpers and
connectors.
Jumpers and connectors
Label Function
JP1,7 CPU voltage select
JP2 Secondary IDE LED
JP3 Primary IDE LED
JP4, 5, 6 On-board VGA enabled/disabled
JP8, 9, 10 CPU type select
JP11 Flash BIOS protect
JP12 Cache size select
JP13, 14 CPU clock select
JP15 Clear CMOS
JP16 Watchdog timer interrupt select
JP17 Reserve for IR CON
JP18 RS-232 port IRQ select
Primary IDE 1st enhanced IDE connector
Secondary IDE 2nd enhanced IDE connector
Floppy Disk FDD connector
Printer Parallel port connector
Feature Connector VGA feature connector
Power Con Power connector
KB CON External keyboard connector
VGA VGA connector
KB/PS2 Mouse Keyboard and/or PS/2 mouse connector
COMA Serial port 1 connector
COMB Serial port 2 connector
10 SBC-490 User's Manual
ALI
M1489
ALI
M1487
Locating jumpers and connectors
KB/PS2
POWER COMA VGA
CON MOUSE
JP17,
KB
JP18
CON
PRINTER
SMC
COMB FDC37C665
FEATURE
PC/104 MODULE CON-
CONNECTOR
NECTOR
FLOPPY
DISK
CPU
JP15
FAN
JP11
PRIMA-
RY IDE
JP4,
JP5, JP6
SECOND-
ARY IDE
JP16
IDE LED (JP2,
JP3)
CPU CLK (JP13,
CPU VCC JP14)
CPU TYPE (JP8, JP9,
(JP1, JP7)
JP10)
TB LED
EXT-SPK TB SW
¬¬¬¬¬
SMI OUT
JP12
SMI SW
KEY-
RESET
LOCK
SIMM
SOCKETS
Chapter 2 Installation 11
32K8 CACHE RAM
32K8 CACHE RAM
Trident
DS14185
TGUI9440AGi
32K8 CACHE RAM
DS14185
TC5142560BJ-70 TC5142560BJ-70
32K8 CACHE RAM
32K8 CACHE RAM 24.00
AWARD
AWARD SOFTWARE INC
BIOS ISA 486
TM
ODIN
AMIKEY -2
OEC12C887
IMI
SC464
16V8
14.318
SBC 490 486SX/DX/DX2/DX4 CPU CARD Rev. B1
Setting jumpers
You configure your card to match the needs of your applications
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 may connect
either pins 1 and 2 or 2 and 3.
3
2
1
Open Closed Closed 2-3
The jumper settings are schematically depicted in this manual as
follows:
1 2 3
Open Closed Closed 2-3
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 applications, contact your local distributor or sales represen-
tative before you make any changes.
Generally, you simply need a standard cable to make most
connections.
12 SBC-490 User's Manual
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.
Chapter 2 Installation 13
Installing the CPU
The SBC-490 CPU card supports most 486 CPUs, as well as the
P24T Pentium OverDrive processor. The system's performance
depends on the CPU you choose. You can install or upgrade the
CPU in the board's ZIF 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. Pull the lever on the side of the ZIF socket out a little and raise
it up as far as it will go.
2. Lift the CPU out.
Installing the CPU
1. Make sure the ZIF socket lever is up as far as it can go. The
Pin 1 position is at the arm corner.
2. Match Pin 1 on the CPU with the Pin 1 position on the ZIF
socket. The pins on the three inner rings of the CPU should be
aligned with the holes on the ZIF socket.
3. Insert the CPU. If it does not go in easily, lift the lever higher.
4. Press the lever down. The sliding plate will move forward to
position the CPU. You will feel some resistance in the lever as
the CPU is secured into place. When the CPU is properly
installed, the lever will snap into place at the side of the ZIF
socket.
When you install a new CPU, you have to adjust other settings on
the board, such as CPU type, CPU clock and PCI speed, to
accommodate it. Make sure that the settings are correct for your
CPU. Improper settings may damage the CPU.
14 SBC-490 User's Manual
CPU type select (JP8, JP9, JP10)
JP8, JP9, and JP10 must be set to match the CPU type. The chart
below shows the proper jumper setting for their respective CPU.
CPU Type select (JP8, JP9, JP10)
Intel P24T AMD/Intel DX4-100 AMD DX5-133/ Intel 486SX
Intel P24D AMD DX2-66(WB)
Intel DX2-66 (default)
AMD DE2-66
JP 8 9 10 JP 8 9 10 JP 8 9 10 JP 8 9 10
Pin 1
Pin 1
Pin 1 Pin 1
2
2 2
2
3 3
3 3
4
4 4 4
5
5
5 5
6 6
6 6
7
7 7 7
8
8
8 8
9 9
9 9
Cyrix/IBM/ST Cyrix/IBM/ST/TI AMD
5x86 , DX4 DX2 Series DX2-66(WT)
Series
JP 8 9 10 JP 8 9 10
JP 8 9 10
Pin 1
Pin 1
Pin 1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
9
9
9
Chapter 2 Installation 15
CPU Vcc select (JP1, JP7)
JP1 and JP7 must be set to match the CPU type. The chart below
shows the proper jumper settings for their respective V .
cc
CPU Vcc select (JP1, JP7)
5.0 V 3.3 V 3.45 V 3.6 V 4.0 V
JP1
JP7
CPU clock select (JP13, JP14)
JP13 and JP14 is used to synchronize the CPU clock with the CPU
type. Set the CPU clock according to the base CPU speed.
CPU clock select (JP13, JP14)
25 MHz 33 MHz 40 MHz 50MHz
A B C A B C
A B C A B C
JP13
JP14
16 SBC-490 User's Manual
Installing DRAM (SIMMs)
The SBC-490 CPU card provides four 72-pin SIMM (Single In-
line Memory Module) sockets and supports between 1 MB to 128
MB of FP RAM or EDO RAM.
Installing SIMMs
Note that the modules can only fit into a socket one way.
1. Insert the memory module into the socket at a moderate angle.
2. Push the module toward the vertical posts at both ends of the
socket until the module is upright, and the retaining clips at
both ends of the module click into place. When positioned
correctly, the pins on top of the vertical posts should corre-
spond to the circular holes on the ends of the module.
3. Repeat steps 1 and 2 for each module you install.
Removing SIMMs
If you need to remove a SIMM, follow the procedures below:
1. Supporting the SIMM with a finger, use a pen or a similarly
shaped object and press one retaining clip straight down.
2. Repeat for the other side. When released, the retaining clips
will push the SIMM up and out of its upright position.
3. Carefully pull the SIMM out of the socket with your fingers.
4. Repeat the above steps for each module you remove.
Chapter 2 Installation 17
SIMM Module Installation Table
Modules Total
SIMM 1 SIMM 2 SIMM 3 SIMM 4
Type Modules
1 S
1 S
1 S
1 S
2 S S
2 S S
Single 2 S S
Bank
2 S S
SIMM
Module 2 S S
2 S S
3 S S S
3 S S S
3 S S S
3 S S S
4 S S S S
1 D
1 D
Double
1 D
Bank
SIMM
1 D
Module
2 D D
2 D D
2 D S
Mixed
Single
2 D S
Bank
2 S D
and
Double
2 D S
Bank
3 D S S
SIMM
Modules
3 S D S
S: Single Bank SIMM Module
D: Double Bank SIMM Module
18 SBC-490 User's Manual
Selecting cache memory size
The SBC-490 features a 2nd level memory cache that supports
128, 256, or 512 KB of cache memory. Higher cache memory can
improve your system's performance.
The cache uses SRAM chips in three sizes: 32 KB, 64 KB and 128
KB. The on-board cache memory banks consist of four SRAM
chip sockets, each of which accepts one "Tag" chip. All SRAM
chips must have a speed of 20 ns or faster. The table below shows
the possible cache configurations:
Cache Configuration
Cache size Tag RAM Data RAM
128 KB one 32 KB x 8 four 32 KB x 8 SRAMs
256 KB one 32 KB x 8 four 64 KB x 8 SRAMs
512 KB one 32 KB x 8 four 128 KB x 8 SRAMs
Cache memory select (JP12)
When the cache size changes, you must make sure that JP12 is set
to match the new cache memory size. The following chart shows
the proper jumper setting for each cache configuration:
Cache memory select (JP12)
128 KB 256 KB 512 KB
1 2 1 2 1 2
3 4
3 4 3 4
Chapter 2 Installation 19
IDE hard drive connections
You can attach four Enhanced Integrated Device Electronics
(IDE) hard disk drives to the SBC-490's internal controller. The
card comes with a 40-pin flat-cable piggyback cable. This cable
has three identical 40-pin flat-cable connectors.
Connecting the hard drive
Wire number 1 on the cable is red or blue, and the other wires are
gray.
1. Connect one end of the cable to PRIMARY IDE or SECOND-
ARY IDE conector on the CPU card. Make sure that the red (or
blue) wire corresponds to pin 1 on the connector, which is
labeled on the board (on the right side).
2. Plug the other end of the cable to the Enhanced IDE hard drive,
with pin 1 on the cable corresponding to pin 1 on the hard
drive. (See your hard drive's documentation for the location of
the connector.)
Unlike floppy drives, you can make the connections with any of
the connectors on the cable. If you install two drives, you need to
set one as the master and one as the slave. You do this using
jumpers on the drives. If you install just one drive, set it as the
master.
20 SBC-490 User's Manual
Pin assignments
The following table lists the pin numbers and their respective
signals:
IDE Connector
Pin Signal Pin Signal
1 Reset 2 GND
3D7 4 D8
5D6 6 D9
7 D5 8 D10
9 D4 10 D11
11 D3 12 D12
13 D2 14 D13
15 D1 16 D14
17 D0 18 D15
19 GND 20 N.C.
21 N.C, 22 GND
23 IOW 24 GND
25 IOR 26 GND
27 IORDY 28 BALE
29 N.C. 30 GND
31 IRQ 32 -I/O CS16
33 A1 34 N.C.
35 A0 36 A2
37 CS0 38 CS1
39 -ACT 40 GND
IDE LED (JP2, JP3)
You can connect an LED to indicate that an IDE device is in use.
The pin assignments for both jumpers are as follows:
IDE LED pin assignments (JP2, JP3)
Pin Function
1 -R/W IDE
2 Pull high
Chapter 2 Installation 21
Floppy drive connections
You can attach up to two floppy disks to the SBC-490's on-board
controller. You can use any combination of 5.25" (360 KB and
1.2 MB) and/or 3.5" (720 KB, 1.44 MB, and 2.88 MB) drives.
The SBC-490 CPU card comes with a 34-pin daisy-chain drive
connector cable. On one end of the cable is a 34-pin flat-cable
connector. There are two sets of floppy disk drive connectors,
one in the middle, and one on the other end. Each set consists of
a 34-pin flat-cable connector (usually used for 3.5" drives) and a
printed-circuit board connector (usually used for 5.25" drives).
Connecting the floppy drive
1. Plug the 34-pin flat-cable connector into FLOPPY DISK
connector on the CPU card.
2. Attach the appropriate connector on the other end of the
cable to the floppy drive(s). You can use only one connector
in the set. The set on the end (after the twist in the cable)
connects to the A: floppy. The set in the middle connects to
the B: floppy.
Pin assignments
The following table lists the pin assignments for FLOPPY DISK
connector:
FLOPPY DISK Connector
Pin Signal Pin Signal
1~33 (odd)GND 2 High density
4, 6 Unused 8 Index
10 Motor enable A 12 Driver select B
14 Driver select A 16 Motor enable B
18 Direction 20 Step pulse
22 Write data 24 Write enable
26 Track 0 28 Write protect
30 Read data 32 Select head
34 Disk change
22 SBC-490 User's Manual
Parallel port
Normally, the parallel port is used to connect the card to a printer.
The SBC-490 includes an on-board parallel port, accessed through
a 26-pin flat-cable connector, PRINTER connector. The CPU card
comes with an adapter cable, which lets you use a traditional DB-
25 connector. The cable has a 26-pin connector on one end and a
DB-25 connector on the other, mounted on a retaining bracket.
Installing the retaining bracket
The retaining bracket installs at an empty slot in your system's
chassis. It provides an external port that allows your parallel
peripheral to access to the card's parallel port connector.
1. Find an empty slot in your chassis.
2. Unscrew the plate that covers the end of the slot.
3. Screw in the bracket in place of the plate.
4. Next, attach the flat-cable connector to the PRINTER connec-
tor on the CPU card. Wire 1 of the cable is red or blue, and the
other wires are gray. Make sure that Wire 1 connects to Pin 1
of the PRINTER connector. Pin 1 is on the right side of
PRINTER connector.
Pin assignments
PRINTER Connector
Pin Signal Pin Signal
1 Strobe 2 Data 0
3 Data 1 4 Data 2
5 Data 3 6 Data 4
7 Data 5 8 Data 6
9 Data 9 10 -Acknowledge
11 Busy 12 Paper empty
13 + Select 14 - Auto feed
15 - Error 16 - Init printer
17 - Select input 18~25 GND
Chapter 2 Installation 23
Power supply connections
Power supply connector
In single-board-computer (non-passive-backplane) applications
you will need to connect power directly to the SBC-490 board
using the connector labeled POWER CON. This connector is fully
compatible with the standard PC power supply connector. See the
following table for its pin assignments:
Power connector
Pin Function
1 N.C.
2 +5 V
DC
3 +12 V
DC
4 -12 V
DC
5 GND
6 GND
CPU fan power connector
For some harsh environments or demanding applications, you
need to install a CPU cooling fan on the CPU to keep it from
overheating. The SBC-490 provides a cooling fan connector
labeled CPU FAN. The following table lists the pin assignments.
CPU fan power connector
Pin Function
1 +12 V
2 GND
3 GND
4 +5 V
24 SBC-490 User's Manual
Display connections
The SBC-490 CPU card's SVGA connector (labeled VGA) with
PCI bus supports monochrome display as well as high resolution
color displays. In addition, the card also features a Feature
connector, which allows you to plug in other external display
devices. The following table lists their pin assignments.
Feature connector VGA connector
Pin Function Pin Function
1 C0 1 Red video
2 C1 (Blue) 2 Green video
3 C2 (Green) 3 Blue video
4 C3 (Red) 4 Not used
5 C4 (2nd Green) 5 GND
6 C5 (2nd Blue) 6 Red return (GND)
7 C6 (2nd Red) 7 Green return GND)
8 C7 8 Blue return (GND)
9 DAC clock 9 Key (no pin)
10 Blank 10 Sync return (GND)
11 Horizontal sync 11 Monitor ID(not used)
12 Vertical sync 12 Monitor ID
13 Ground 13 Horizontal sync
14 Ground 14 Vertical sync
15 Ground 15 Not used
16 Ground
17 SIV (Select Internal Video)
18 SIS (Select Internal Sync)
19 SICLK (Select Internal Clock)
20 N.C.
21 Ground
22 Ground
23 Ground
24 Ground
25 N.C.
26 N.C.
Chapter 2 Installation 25
On-Board VGA Settings (JP4, JP5, JP6)
You can disable the on-board VGA by setting JP4, JP5 and JP6.
JP4, JP5, JP6: On-board VGA Settings
DISABLE VGA ENABLED VGA
JP4
JP5
JP6
Keyboard and PS/2 mouse connectors
The SBC-490 board provides two keyboard connectors. A 5-pin
connector (KB CON) supports passive backplane applications. A
second 6-pin mini-DIN connector (KB/PS2 MOUSE) on the card
mounting bracket supports single-board-computer applications.
The card comes with an adapter to convert the 6-pin mini-DIN
connector, used for the mouse, and the standard DIN connector for
the keyboard.
Keyboard connector
Pin Function
1 K.B. clock
2 K.B. data
3 N.C.
4 GND
5 +5 V
DC
26 SBC-490 User's Manual
Keyboard and/or PS/2 mouse connector (6-pin mini-DIN)
Pin Function
1 K.B. data
2 PS/2 mouse data
3 GND
4 +5 V
DC
5 K.B. clock
6 PS/2 mouse clock
Serial ports
The SBC-490 offers two RS-232 serial ports. You can select the
address for each port or disable it, using the BIOS Peripheral
Setup program.
The card mounting bracket holds the serial port connector for the
one port, and the parallel port and serial port adapter kit (supplied
with the card) holds the connector for the other port. This lets you
connect and disconnect cable after you install the card. The DB-9
connector on the top of the bracket is the first RS-232 port,
COMA. The DB-9 connector on the adapter kit is the second
serial port, COMB. The following sections tell how to make RS-
232 connections.
RS-232 connections (COMA, COMB)
The following table shows the pin assignments for the card's RS-
232 port:
RS-232 connector pin assignment
Pin no. Signal
1 DCD
2RX
3TX
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9RI
Chapter 2 Installation 27
Serial ports IRQ select (JP18)
You can select the serial ports' IRQs by setting JP18 as follows:
JP18: RS-232 PORT IRQ SELECT:
COMA COMB JP18 setting
IRQ3 IRQ4
IRQ4 IRQ3
IRQ11 IRQ10
IRQ10 IRQ11
IRQ4 IRQ10
IRQ4 IRQ11
IRQ3 IRQ10
IRQ3 IRQ11
IRQ11 IRQ3
IRQ11 IRQ4
28 SBC-490 User's Manual
IRQ10 IRQ3
IRQ10 IRQ4
Watchdog timer setup
Watchdog timer time-out
signal select (JP16)
If CPU processing comes to a halt because of EMS or a software
bug, the watchdog timer can either reset the CPU or signal an
interrupt on IRQ15.
JP16: WATCHDOG TIMER INTERRUPT SELECT
Disabled 5-6: IRQ15 3-4: NMI
1-2: RESET
Watchdog timer programming
The watchdog timer must be programmed to write to I/O port
address 443 at an interval shorter than the timer's preset interval.
The timer's interval has a tolerance of ±5%, so you should
program an instruction that will refresh the timer before a time-out
occurs. The following steps illustrate how you might program the
watchdog timer.
1. Write to I/O port 443 (Hex) and designate a time-out interval.
This will enable the watchdog and set-up its time-out interval.
2. Write to I/O port 080 (Hex) any random value. This will in
turn disable the watchdog timer.
Chapter 2 Installation 29
The watchdog timer-out interval can be set at 16 levels between 2
and 32 seconds. The following table shows the Hex values for the
appropriate time-out intervals:
Watchdog timer delay values
Delay time Value (Hex) Delay time Value (Hex)
0~2 F 16~18 7
2~4 E 18~20 6
4~6 D 20~22 5
6~8 C 22~24 4
8~10 B 24~26 3
10~12 A 26~28 2
12~14 9 28~30 1
14~16 8 30~32 0
Flash BIOS Protect (JP11)
You can set the JP11 to protect BIOS write-enable. The configu-
ration is as follows:
JP11: FLASH BIOS PROTECT
Write Protect Write Enabled
Clear CMOS (JP15)
You can clear the CMOS data by setting JP15.
JP15: CLEAR CMOS
PROTECT CLEAR CMOS
30 SBC-490 User's Manual
External Switches and LEDs
Power LED and keylock
You can connect an LED to indicate when the CPU card is on. Pin
1 of connector labeled KEYLOCK supplies power to the LED and
Pin 3 is the ground.
You can use a switch (or a lock) to disable the keyboard. In this
state the PC will not respond to any input. This is useful if you
don’t want anyone to change or stop a running program. Simply
connect the switch between Pins 4 and 5. The pin assignments
appear in the following table:
Power LED and keylock
Pin Function
1 LED Power (+5 V)
2 No Connector
3 Ground
4 Keyboard lock
5 Ground
External speaker
The CPU card has its own buzzer. You can disable the internal
buzzer and connect an external speaker to the EXT-SPK connec-
tor. Enabling the external speaker automatically disables the
internal buzzer.
External speaker
Pin Function
1 Vcc
2 Speaker output
3 Buzzer in
4 Speaker output
Chapter 2 Installation 31
Reset switch
You can connect an external switch to easily reset your computer.
This switch restarts your computer as if you had turned off the
power then turned it back on. The following table shows the pin
assignments for the RESET connector.
Reset switch
Pin Function
1 Ground
2 Reset
Turbo LED
You can connect an LED indicator across the jumper labeled TB
LED to indicate when the CPU is in Turbo mode. Marks on the
circuit board indicate LED polarity (the pin on the left is positive).
When the CPU powers down upon switching to green mode, the
Turbo LED begins to blink.
Turbo LED
Pin Function
1 Turbo
2 Ground
Turbo switch
You can connect a switch across the pins of jumper labeled TB
SW to change the CPU speed between Turbo and non-Turbo
mode. When you leave the pins open, the CPU card operates at
full speed. When you close the pins, the card operates at slow
speed for compatibility with older software.
Turbo switch pin assignments
Pin Function Low speed High Speed
1 - Deturbo
2 Pull low
32 SBC-490 User's Manual
3
AMI WinBIOS Setup
This chapter describes the card’s diagnos-
tic tests and how to set BIOS configura-
tion data in a Windows environment.
Chapter 3 AMI WinBIOS setup 33
CHAPTER
General information
WinBIOS Setup configures system information that is stored in
CMOS RAM. Unlike conventional BIOS setup programs, Win-
BIOS features a graphical user interface that is easy to use.
Starting WinBIOS setup
As POST executes, the following appears;
Hit if you want to run SETUP
Press to run WinBIOS setup.
WinBIOS main menu
The WinBIOS setup screen appears as follows:
34 SBC-490 User's Manual
Using a mouse with WinBIOS setup
WinBIOS Setup can be accessed via keyboard, mouse, or pen. The
mouse click functions are:
single click to change or select both global and current fields
double click to perform an operation in the selected field
Using the keyboard with WinBIOS setup
WinBIOS Setup has a built-in keyboard driver that uses simple
keystroke combinations:
Keystroke Function
key press and runs WINBIOS Setup if the key has
been pressed.
Enabled AMIBIOS does not test system memory above 1 MB.
AMIBIOS does not wait up to 40 seconds for a READY
signal from the IDE hard disk drive. If a READY signal
is not received immediately from the IDE drive,
AMIBIOS does not configure that drive. AMIBIOS does
not wait for .5 seconds after sending a RESET signal
to the IDE drive to allow the IDE drive time to get ready
again.
You cannot run WINBIOS Setup at system boot,
because there is no delay for the Hit to run
Setup message.
Boot Up Sequence:
This option sets the sequence of boot drives (floppy drive A:, hard
disk drive C:, or CD-ROM drive) that the AMIBIOS attempts to
boot from after AMIBIOS POST completes. The settings are
C:,A:,CDROM, CDROM,A:,C:, or A:,C:,CDROM. The default
settings are A:,C:,CDROM.
Boot Up Num Lock:
Set this option to Off to turn the Num Lock key off when the
computer is booted so you can use the arrow keys on both the
numeric keypad and the keyboard. The settings are On or Off. The
default settings are on.
Chapter 3 AMI WinBIOS setup 39
Turbo Switch:
Set this option to Enabled to permit AMIBIOS to control the
hardware turbo (speed) switch. The settings are Enabled or
Disabled.
Floppy Drive Swap:
Set this option to Enabled to permit drives A: or B: to be
swapped. The settings are Enabled or Disabled. The default
settings are Disabled.
Floppy Drive Seek:
Set this option to Enabled to specify that floppy drive A: will
perform a Seek operation at system boot. The settings are
Enabled or Disabled. The Optimal and Fail-Safe default settings
are Disabled.
Mouse Support:
When this option is set to Enabled, AMIBIOS supports a PS/2-
type mouse. The settings are Enabled or Disabled. The default
settings are Enabled.
System Keyboard:
This option specifies that a keyboard is attached to the computer.
The settings are Present or Absent. The Optimal and Fail-Safe
default settings are Present.
Primary Display:
This option specifies the type of display monitor and adapter
in the computer. The settings are Mono, CGA40, CGA80,
EGA/VGA, or Absent. The Optimal and Fail-Safe default
settings are EGA/VGA..
Display Device:
This option allows user to select display device. The settings are
CRT, LCD, and Both. The Fail-Safe default setting is Both.
40 SBC-490 User's Manual
Password Check:
This option enables password checking every time the computer
is powered on or every time WINBIOS Setup is executed. If
Always is chosen, a user password prompt appears every time the
computer is turned on. If Setup is chosen, the password prompt
appears if WINBIOS is executed. The Optimal and Power-On
defaults are Setup.
Parity Check:
Set this option to Enabled to check the parity of all system
memory. The settings are Enabled or Disabled. The Optimal and
Fail-Safe default settings are Disabled.
OS/2 Compatible Mode:
Set this option to Enabled to permit AMIBIOS to run with IBM
OS/2. The settings are Enabled or Disabled. The default settings
are Disabled.
Wait for F1 if Error:
AMIBIOS POST error messages are followed by:
Press if you want to run Setup
from appearing on the first AMIBIOS screen when the computer
boots. The settings are Enabled or Disabled. The Optimal and
Fail-Safe default settings are Enabled.
Chapter 3 AMI WinBIOS setup 41
Internal Cache:
This option specifies the caching algorithm used for L1 internal
cache memory. The setting are:
Setting Description
Disabled Neither L1 internal cache memory on the
CPU nor L2 secondary cache memory is
enabled.
WriteBack Use the write-back caching algorithm.
WriteThru Use the write-through caching algorithm.
External Cache
This option specifies the caching algorithm used for L2 second-
ary (external) cache memory. The settings are:
Setting Description
Disabled Neither L1 internal cache memory on the
CPU nor L2 secondary cache memory is
enabled.
WriteBack Use the write-back caching algorithm.
WriteThru Use the write-through caching algorithm.
System BIOS Cacheable
When this option is set to Enabled, the contents of the F0000h
system memory segment can be read from or written to L2
secondary cache memory. The contents of the F0000h memory
segment are always copied from the BIOS ROM to system RAM
for faster execution.
The settings are Enabled or Disabled. The Fail-Safe default
setting is Disabled.
Numeric Processor Test
Set this option to Ebable to permit numeric processor to be
tested. The deault setting is Disabled.
Hard Disk Delay
This option allows you to select hard disk delay time from 5 Sec
to 15 Sec. The default setting is Disabled.
42 SBC-490 User's Manual
C000,16 KB Shadow D000,16KB Shadow
C400,16 KB Shadow D400,16KB Shadow
C800,16 KB Shadow D800,16KB Shadow
CC00,16 KB Shadow DC00,16KB Shadow
E000,64KB Shadow
These options control the location of the contents of the 16KB
of ROM beginning at the specified memory location. If no
adapter ROM is using the named ROM area, this area is made
available to the local usb. The settings are:
Setting Description
Shadow The contents of C0000h - C3FFFh are written to the
same address in system memory (RAM) for faster
execution.
Enabled The contents of the named ROM area are written to
the same address in system memory (RAM) for faster
execution, if an adapter ROM will be using the named
ROM area. Also, the contents of the RAM area can be
read from and written to cache memory.
Disabled The video ROM is not copied to RAM. The contents of
the video ROM cannot be read from or written to cache
memory.
Chapter 3 AMI WinBIOS setup 43
Chipset Setup
The WinBIOS Setup options deccribed in this section are selected
by choosing the Chipset icon from the WinBIOS setup main
menu,shown below.
The following is an option list offered by Chipset Setup
Chipset setup options
Function Options
Auto Configuration Function Disabled/Enabled
AT Bus Clock 7.16
CPU Bus Speed/3
CPU Bus Speed/4
CPU Bus Speed/5
CPU Bus Speed/6
CPU Bus Speed/8
DRAM Read Timing Slow
Normal
Faster
Fastest
44 SBC-490 User's Manual
Function Options
DRAM Write Timing Slow
Normal
Faster
Fastest
SRAM Type 2-1-1-1
3-1-1-1
3-2-2-2
4-2-2-2
SRAM Read Timing Fast
Normal
SRAM Write Timing FAST
Normal
Memory Parity Check Disabled
Enabled
DRAM Hidden Refresh Disabled
Enabled
DRAM Refresh Period Setting 15 ms
30 ms
60 ms
120 ms
Memory Hole at 15-16 M Disabled
Enabled
ISA I/O Recovery Disabled
Enabled
ISA I/O Recovery Time 0.5 ms
1.0 ms
1.5 ms
2.0 ms
2.5 ms
3.0 ms
3.5 ms
Cx5x86 Linear Wrapped Mode Disabled
Enabled
System Hidden Refresh 15 ms
30 ms
60 ms
120 ms
Chapter 3 AMI WinBIOS setup 45
Power Management Setup
As part of the "Green" function, the Power Management setup
offers options to help reduce power consumption. To see the
options in this group, choose the Power Management Setup icon
from the WinBIOS Setup main menu.
Power Management Mode/APM Funtion
Set this option to Enabled to enable the power management and
APM (Advanced Power Management) features.
The settings are Enabled or Disabled. The default settings are
disabled.
46 SBC-490 User's Manual
PCI/PnP Setup
PCI/PnP Setup options are displayed by choosing the PCI/PnP
Setup icon from the WINBIOS Setup main menu. All PCI/PnP
Setup options are described in this section.
Plug and Play Aware OS
Set this option to Yes if the operating system installed in the
computer is Plug and Play-aware. AMIBIOS only detects and
enables PnP ISA adapter cards that are required for system boot.
The Windows 95 operating system detects and enables all other
PnP-aware adapter cards. Windows 95 is PnP-aware. Set this
option to No if the operating system (such as DOS, OS/2,
Windows 3.x) does not use PnP.
You must set this option correctly or PnP-aware adapter cards
installed in your computer will not be configured properly.
The settings are No or Yes. The Optimal and Fail-Safe default
settings are Yes.
Chapter 3 AMI WinBIOS setup 47
PCI Latency Timer (in PCI Clocks)
This option sets latency of all PCI devices on the PCI bus. The
settings are in units equal to PCI clocks. The settings are 32, 64,
96, 128, 160, 192, 224, or 248. The Optimal and Fail-Safe default
settings are 64.
VGA Locate Bus
This option allows you to select VGA bus. The setting is PCI and
ISA (Default).
CPU to PCI Write Buffer
This option sets the write buffer between CPU and PCI bus. The
default setting is Enabled.
PCI IDE BusMaster
Set this option to Enabled to specify that the IDE controller on
the PCI local bus has bus mastering capability. The settings are
Disabled or Enabled. The Optimal and Fail-safe default settings
are Disabled.
Offboard PCI IDE Card
This option specifies if an offboard PCI IDE controller adapter
card is used in the computer. You must also specify the PCI
expansion slot on the motherboard where the offboard PCI IDE
controller card is installed. If an offboard PCI IDE controller is
used, the onboard IDE controller on the motherboard is automati-
cally disabled. The settings are Disabled, Auto, Slot1, Slot2,
Slot3, or Slot4.
If Auto is selected, AMIBIOS automatically determines the
correct setting for this option. The Optionmal and Fail-Safe
default settings are Auto.
48 SBC-490 User's Manual
PCI Slot1 IRQ Priority
PCI Slot2 IRQ Priority
PCI Slot3 IRQ Priority
PCI Slot4 IRQ Priority
This option sets PCI slot IRQ priority.
The settings are Auto,3,4,5,7,9,10,11. The default setting is Auto.
IRQ3
IRQ4
IRQ5
IRQ7
IRQ9
IRQ10
IRQ11
IRQ12
IRQ14
IRQ15
These options specify the bus that the named interrupt request
lines (IRQs) are used on. These options allow you to specify
IRQs for use by legacy ISA adapter cards.
These options determine if AMIBIOS should remove an IRQ from
the pool of available IRQs passed to BIOS configurable devices.
The available IRQ pool is determined by reading the ESCD
NVRAM. If more IRQs must be removed from the pool, the end
user can use these PCI/PnP Setup options to remove the IRQ by
assigning the option to the ISA/EISA setting. Onboard I/O is
configurable by AMIBIOS. The IRQs used by onboard I/O are
configured as PCI/PnP.
The settings are PCI/PnP or ISA/EISA. The Optimal and Fail-Safe
default settings are PCI/PnP.
Chapter 3 AMI WinBIOS setup 49
Reserved Memory Size
This option specifies the size of the memory area reserved for
legacy ISA adapter cards.
The settings are Disabled, 16K, 32K, or 64K and Fail-Safe
default settings are Disabled.
Reserved Memory Address
This option specifies the beginning address (in hex) of the
reserved memory area. The specified ROM memory area is
reserved for use by legacy ISA adapter cards.
The settings are C0000, C4000, C8000, CC000, D0000, D4000,
D8000, or DC000.
50 SBC-490 User's Manual
Peripheral Setup
Peripheral Setup options are displayed by choosing the Peripheral
Setup icon from the WINBIOS Setup main menu. All Peripheral
Setup options are described in this section:
Onboard FDC
This option enables the floppy drive controller on the mother-
board. The settings are Auto, Enabled or Disabled.
Onboard Serial Port 1
This option enables serial port 1 on the motherboard and
specifies the base I/O port address for serial port 1.
The settings are Auto, Disabled, 3F8h, 3E8h, 2E8h,2F8h. The
Fail-Safe default setting is Auto.
Chapter 3 AMI WinBIOS setup 51
Onboard Serial Port2
This option enables serial port 2 on the motherboard and speci-
fies the base I/O port address for serial port 2. The settings are
Auto. Disabled, 3F8h, 2F8h, 3E8h, 2E8h. The Fail-Safe default
setting is Auto.
Onboard Parallel Port
This option enables the parallel port on the motherboard and
specifies the parallel port base I/O port address. The settings are
Auto, disabled, 378, 378, 3BC. The Fail-Safe default setting is
Auto.
Parallel Port Mode
This option specifies the parallel port mode. ECP and Epp are
both bidirectional data transfer sechemes that adhere to the IEEE
P1284 specification. The settings are:
Setting Description
Normal The normal parallel port mode is used. This is the
default setting.
EPP The parallel port can be used with devices that adhere
to the Enhanced Parallel Port (EPP) specification.
EPP uses the exiting parallel port signals to provide
asymmetric bidirectional data trans driven by the host
device.
ECP The parallel port can be used with devices that adhere
to the Extended Capabilities Port (ECP) specification.
ECP uses the DMA protocol to achieve transfer rates
of approx imately 2.5 Mbs. ECP provides symmetric
bidirectional communlations.
52 SBC-490 User's Manual
Parallel Port DMA Channel
This option is only available if the setting for the Parallel Port
Mode optionis ECP.
The settings are Disabled, DMA, CH (channel) 0, DMA CH 1, or
DMA CH3.
Parallel Port IRQ
IRQ7 us used for the Parallel Port(LPT 1). The IRQ can be
changed to IRQ5.
Onboard IDE
This option specifies the onboard IDE controller channels that
will be used. The settings are Primary, Both, or Disabled.
Chapter 3 AMI WinBIOS setup 53
Utility
The following icons appear in this section:
Detect IDE:
If drive C: is an IDE drive, the hard disk drive parameters for drive
C: are automatically detected and reported to the Hard Disk Drive
C: screen in Standard Setup, so you can easily configure drive C:.
Drive D and CD-ROM could also be automatically detected and
reported to screen if drvie D and CD-ROM are IDE drives.
Language:
If this feature is enabled, you can select WINBIOS. Setup
message is in different languages. The default setting is English.
54 SBC-490 User's Manual
Security
The following icons appear in this section:
Two Levels of Passwords
Both the Supervisor and the User icons configure password
support. If you use both, the Supervisor password must be t If this
feature is enabled, you can select WINBIOS. Setup message is in
different languages. The default settings is English.
The system can be configured so that all users must enter a
password every time the system boots or when WINBIOS Setup is
executed, using either or both the Supervisor password or User .
Chapter 3 AMI WinBIOS setup 55
The following screen appears when you select the password icon
You can enter a password by:
typing the password on the keyboard
selecting each letter via the mouse
selecting each letter via the pen stylus (pen access must be
customized for each specific hardware platform.)
Setting a Password
The password check option is enabled in Advanced Setup by
choosing either Always or Setup. Here, you determine the
password to be used. The password is stored in CMOS RAM.
To assign a password,
1. Enter a 1-6 character password. The password does not appear
on the screen when typed.
2. Retype the password when prompted by WinBIOS.
A message box will appear when the password is confirmed.
Keep a record of the password. If you forget the password, you
must drain CMOS RAM and reconfigure the system.
56 SBC-490 User's Manual
Changing a password
1. Select the Supervisor or User icon from the Security section
of the WinBIOS Setup main menu.
2. Enter the password and press
Frequently asked questions
How does Industrial Trading differ from its competitors?

Is there a warranty for the SBC-490?

Which carrier will Industrial Trading use to ship my parts?

Can I buy parts from Industrial Trading if I am outside the USA?

Which payment methods does Industrial Trading accept?

Why buy from GID?

Quality
We are industry veterans who take pride in our work

Protection
Avoid the dangers of risky trading in the gray market

Access
Our network of suppliers is ready and at your disposal

Savings
Maintain legacy systems to prevent costly downtime

Speed
Time is of the essence, and we are respectful of yours
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