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About This Guide:
This Quick Start Guide can help system manufacturers and end users in setting up
and installing the Motherboard. Information in this guide has been carefully
checked for reliability; however, to the correctness of the contents there is no
guarantee given. The information in this document is subject to amend without
notice.
For further information, please visit our Web Site on the Internet. The address is
The SY-7VCA2 AGP/PCI/AMR Motherboard is a high-performance
Socket 370 supported ATX form-factor system board. The SY-7VCA2
uses VIA Chipset technology and supports Socket 370 class processors.
This Motherboard is fully compatible with industry standards and adds
many technical enhancements.
1-2 KEY FEATURES
Ø CPU SUPPORT
The SY-7VCA2 supports a wide range of INTEL CPUs:
n FSB 66MHz: Celeron(400-700MHz)
n FSB 100MHz: Pentium® III (500-850MHz)
n FSB 133MHz: Pentium® III (533MHz-1.13GHz)
Supports Via Cyrix processors
n FSB 100MHz: Cyrix III (500MHz-600MHz)
n FSB 133MHz: Cyrix III (533MHz-600MHz)
New released Intel Socket 370 CPUs will very likely be supported by the
SY-7VCA2 as well.
Ø CPU SETTINGS
The SY-7VCA2 provides the user with a very complete and convenient
CPU setting environment. The CPU settings are all adjusted through the
special SOYO COMBO page in the BIOS, therefore rendering the use of
jumpers obsolete.
n CPU FSB Frequency
The SY-7VCA2 supports an incredible wide range of CPU FSB frequency
settings:
66, 75, 81, 83, 90, 95, 100, 105, 110, 112, 113, 115, 117, 118, 120, 122,
124, 126, 133, 135, 137, 138, 140, 142, 144, 150 and 155 MHz.
This ensures that the SY-7VCA2 has an overwhelming overclocking potential.
1
Motherboard DescriptionSY-7VCA2
n CPU Multiplier
The SY-7VCA2 supports a wide range of multipliers:
The SY-7VCA2 provides all the standard expansion slots, and many more
additional expansion features:
u Expansion slots
n 1 x 32-bit bus master AGP slot
n 5 x 32-bit bus master PCI slots
n 1 x 16-bit ISA slots
u Enhanced IO
n Floppy disk controller
n 2x EIDE controllers with support for up to 4 Ultra DMA 33/66
/100 devices
n Standard/EPP/ECP parallel port
n 2x 16550 compatible serial ports
n IrDA compatible infrared port
n 4x USB (Universal Serial Bus) connectors
n PS/2 mouse connector
n PS/2 keyboard connector
2
Motherboard DescriptionSY-7VCA2
Ø ADVANCED FUNCTIONS
The SY-7VCA2 supports advanced functions such as:
n Wake-On-LAN
Supports Wake-On-LAN (Some advanced network cards can
wake the system up over the network, the WOL connector is
provided by the SY-7VCA2 to support this function).
n Multiple boot
The SY-7VCA2 supports booting from devices such as CD-ROM.
n Power on by modem or alarm
If the SY-7VCA2 system is in suspend mode, it can be switched back
on through the modem or RTC alarm through this function. This
opens a lot of possibilities, such as remote access that switches the
system on only after the modem receives a call.
Ø FAIL SAFE
The SY-7VCA2 comes with added functionality to make managing the
system easy and safe
u Hardware Monitor
The integrated Hardware Monitor IC and Hardware doctor software
enables the user to monitor system voltages, temperatures and FAN speeds.
This makes sure that the user is full control of the system
u Power Failure Resume Function
This function can be set in the BIOS, and determines whether the system
will automatically turn on again after a power failure. This function is
indispensable for server systems that need to always be on line.
u 5VSB Indicator
This green LED gives an indication of the presence of the 5V Standby
voltage. This voltage is always fed into the motherboard and is used for
functions such as WOL.
Ø SOYO Bonus Pack CD-ROM
Ø COMPLIANCE
The SY-7VCA2 complies with all important industry standards. The
3
Motherboard DescriptionSY-7VCA2
following underlines the reliability of the SY-7VCA2, a motherboard to
trust.
n PC99, ACPI compliant
Ø USER FRIENDLY
n SOYO Combo Setup
n Jumperless design
n You can set up the following options trough the BIOS setting
CPU FSB frequency
CPU multiplier
CPU Vcore voltage
PCI clock
AGP Clock
SDRAM Clock
4
Motherboard DescriptionSY-7VCA2
1-3 HANDLING THE MOTHERBOARD
To avoid damage to your Motherboard, follow these simple rules while
unpacking:
Ø Before handling the Motherboard, ground yourself by grasping an
unpainted portion of the system's metal chassis.
Ø Remove the Motherboard from its anti-static packaging. Hold the
Motherboard by the edges and avoid touching its components.
Ø Check the Motherboard for damage. If any chip appears loose, press
carefully to seat it firmly in its socket.
Warning: Do not apply power if the Motherboard appears
damaged. If there is damage to the board, contact your dealer
immediately.
1-4 ELECTROSTATIC DISCHARGE PRECAUTIONS
Make sure to ground yourself before handling the Motherboard or other
system components. Electrostatic discharge can easily damage the
components. Note that you must take special precautions when handling
the Motherboard in dry or air-conditioned environment.
To protect your equipment from electrostatic discharge, take the following
precautions:
Ø Do not remove the anti-static packaging until you are ready to install.
Ø Ground yourself before removing any system component from its
protective anti-static packaging. (To ground yourself, grasp the expansion
slot covers or other unpainted portions of the computer chassis.)
Ø Frequently ground yourself while working or use a grounding strap.
Ø Handle the Motherboard by its edges and avoid touching its
components.
5
Motherboard DescriptionSY-7VCA2
Speaker
_
+
_
+
_
+
_
+
Reset
PWRBT
PCI Slot #1
PCI Slot #3
PCI Slot #4
PCI Slot #5
1
1
1
2
FDC1
ATX Power
DIMM 2
DIMM 3
DIMM 1
PCI Slot #2
CHAFAN
SDRAM
SDRAM
VT82C694X
AGP Slot
3V
Lithium
USB2
SIRCON
1
5
JP5
3
1
1
1
3
6
5
10
CDIN1
ISA Slot
Via
VT82C686B
Flash BIOS
1-5SY-7VCA2 MOTHERBOARD LAYOUT
PS/2 KB
PS/2 Mouse
Connector
Connector
USB 1
PRT
Socket 370
COM1
COM2
GAME
AUDIO-OUT
LINE-IN
MIC-IN
CODEC
AC97
1
14
CDIN2
JP10
3
1
D1D8D3
D2
4
AMR
Battery
1 3
CPUFAN
®
IDE 1 IDE 2
®
Power
LED
STR
HDD
LED
LED
Back PanelSY-7VCA2 Platform
6
Motherboard DescriptionSY-7VCA2
SDRAM
SDRAM
A
B
D
E
F
G
H
I
J
K
L
M
N
O
C
1-6 SY-7VCA2 MOTHERBOARD COMPONENTS
W
V
U
T
S
R
Q
P
®
®
7
Motherboard DescriptionSY-7VCA2
ASocket 370 Connector
BCPU Cooling Fan Connector
CVia 694X North Bridge chip
DATX Power Supply Connector
EDIMM Banks
The motherboard supports a single Socket 370 processor. The processor’s
VID pins automatically program the voltage regulator on the motherboard
to the required processor voltage. In addition, the front side bus speed (100
MHz and 133 MHz) is automatically selected. The motherboard supports
all current Socket 370 processor speeds, voltages, and bus frequencies.
1-7.1 Microprocessor Packaging
The CPU is packaged in a 370 pin PGA package. A fan must be used to
ensure adequate cooling.
1-7.2 Second Level Cache
The second-level cache is located on the substrate of the CPU package.
The cache includes 0KB/128KB or 512 KB of synchronous pipelined
burst static RAM. All supported onboard memory can be cached.
1-7.3 Microprocessor Upgrades
The motherboard can be upgraded with Socket 370 processors that run at
higher speeds. When upgrading the processor, use the BIOS configuration
mode to change the processor speed.
9
Motherboard DescriptionSY-7VCA2
1-8 MEMORY
1-8.1 Main Memory
The motherboard has three DIMM sockets. SDRAM can be installed in
one, two, or three sockets. Using the serial presence detect (SPD) data
structure, programmed into an E²PROM on the DIMM, the BIOS can
determine the SDRAM’s size and speed. Minimum DIMM memory size is
8 MB; maximum DIMM memory size is 256/512 MB. Memory size and
speed can vary between sockets.
The motherboard supports the following memory features:
DRAM interface synchronous with host CPU (66/100/133MHz) or
AGP (66MHz) for most flexible configuration
DRAM interface may be faster than CPU by 33 MHz to allow use
of PC100 memory modules with 66MHz Celeron or use of PC133
with 100MHz Pentium II or Pentium III
DRAM interface may be slower than CPU by 33 MHz to allow use
of older memory modules with newer CPUs (e.g., PC66 memory
modules with 100MHz Pentium II or Pentium III)
Concurrent CPU, AGP, and PCI access
Supports FP,EDO, SDRAM, ESDRAM and VCM SDRAM
memory types
Different DRAM types may be used in mixed combinations
Different DRAM timing for each bank
Dynamic Clock Enable (CKE) control for SDRAM power
reduction in high speed system.
Mixed 1M/2M/4M/8M/16M/32MxN DRAMs
The 7VCA2 supports 3 DIMMs or 6 banks at 133MHz for 1.5GB
max memory.
Flexible row and column addresses
64-bit data width only
3.3V DRAM interface with 5V-tolerant inputs
Programmable I/O drive capability for MA, command, and MD
signals
10
Motherboard DescriptionSY-7VCA2
Dual copies of MA signals for improved drive
Optional bank-by-bank ECC (single-bit error correction and multi-
bit error detection) or EC(error checking only) for DRAM integrity
Two-bank interleaving for 16Mbit SDRAM support
Two-bank and four bank interleaving for 64Mbit SDRAM support
Independent SDRAM control for each bank
Seamless DRAM command scheduling for maximum DRAM bus
utilization (e.g., precharge other banks while accessing the current
bank)
Four cache lines (16quadwords) of CPU to DRAM write buffers
Four cache lines of CPU to DRAM read prefetch buffers
Read around write capability for non-stalled CPU read
Speculative DRAM read before snoop result
Burst read and write operation
x-2-2-2-2-2-2-2 bank-to-back accesses for EDO DRAM from CPU
or from DRAM controller
x-1-1-1-1-1-1-1 back-to back accesses for SDRAM
BIOS shadow at 16KB increment
Decoupled and burst DRAM refresh with staggered RAS timing
CAS before RAS or self refresh
11
Motherboard DescriptionSY-7VCA2
1-9 CHIPSET
Ø VT82C694X
The VIA 694X is a high performance, cost-effective and energy efficient
chip set for the implementation of AGP/PCI/ISA desktop personal
computer systems from 66MHz, 100MHz and 133MHz based on 64-bit
Socket 370 super-scalar processors.
The Via 694X chip set consists of the VT82C694A system controller (510
pin BGA) and the VT82C686B PCI to ISA bridge (352 pin BGA). The
system controller provides superior performance between the CPU,
DRAM, AGP bus, and PCI bus with pipelined, burst, and concurrent
operation.
The VT82C694X supports eight banks of DRAMs up to 1.5GB. The
DRAM controller supports standard Fast Page Mode (FPM) DRAM,
EDO-DRAM, Synchronous DRAM (SDRAM) and Virtual Channel
SDRAM (VC SDRAM), in a flexible mix / match manner. The
Synchronous DRAM interface allows zero wait state bursting between the
DRAM and the data buffers at 66/100/133 MHz. The eight banks of
DRAM can be composed of an arbitrary mixture of
1M/2M/4M/8M/16M/32MxN DRAMs. The DRAM controller also
supports optional ECC (single-bit error correction and multi-bit detection)
or EC (error checking) capability separately selectable on a bank-by-bank
basis. The DRAM controller can run at either the host CPU bus frequency
(66/100/133 MHz) or at the AGP bus frequency (66 MHz) with built-in
PLL timing control.
The VT82C694X system controller also supports full AGP v2.0 capability
for maximum bus utilization including 4x mode transfers, SBA (Side Band
Addressing), Flush/Fence commands, and pipelined grants. An eight level
request queue plus a four level post-write request queue with thirty-two
and sixteen quad words of read and write data FIFO’s respectively are
included for deep pipelined and split AGP transactions. A single-level
GART TLB with 16 full associative entries and flexible CPU/AGP/PCI
remapping control is also provided for operation under protected mode
12
Motherboard DescriptionSY-7VCA2
operating environments. Both Window 95 VxD and Windows 98 /NT5.0
mini port drivers are supported for interoperability with major AGP-based
3D and DVD- capable multimedia accelerators.
The VT82C694X supports two 32-bit 3.3/5V system buses (one AGP and
one PCI) that are synchronous/ pseudo-synchronous to the CPU bus. The
chip also contains a built-in bus-to-bus bridge to allow simultaneous
concurrent operations on each bus. Five levels (double words) of post
write buffers are included to allow for concurrent CPU and PCI operation.
For PCI master operation, forty-eight levels (double words) of post write
buffers and sixteen levels (double words) of prefetch buffers are included
for concurrent PCI bus and DRAM/cache accesses. The chip also supports
enhanced PCI bus commands such as Memory-Read-Line, Memory-ReadMultiple and Memory-Write-Invalid commands to minimize snoop
overhead. In addition, advanced features are supported such as snoop
ahead, snoop filtering, L1 write-back forward to PCI master, and L1 writeback merged with PCI post write buffers to minimize PCI master read
latency and DRAM utilization. Delay transaction and read caching
mechanisms are also implemented for further improvement of over all
system performance.
The 352-pin Ball Grid Array VT82C686B PCI to ISA bridge supports four
levels (double words) of line buffers, type F DMA transfers and delay
transaction to allow efficient PCI bus utilization The VT82C686B also
includes an integrated keyboard controller with PS/2 mouse support,
integrated DS12885 style real time clock with extended 256 byte CMOS
RAM, integrated master mode enhanced IDE controller with full scatter/
gather capability and extension to UltraDMA-33/66 for 33/66 MB/sec
transfer rate, integrated USB interface with root Hub and two function
ports with built-in physical layer transceivers, Distributed DMA supports,
and On Now/ ACPI compliant advanced configuration and power
management interface.
For sophisticated power management, the Via 694X provides independent
clock stop control for the CPU/SDRAM, PCI, and AGP buses and
13
Motherboard DescriptionSY-7VCA2
Dynamic CKE control for powering down of the SDRAM. A separate
suspend-well plane is implemented for the SDRAM control signals for
Suspend-to-DRAM operation. Coupled with the VT82C686B south bridge
chip, a complete power conscious PC motherboard can be implemented
with no external TTLs.
The Via 694X chipset is ideal for high performance, high quality, high
energy efficient and high integration desktop and notebook AGP / PCI /
ISA computer systems.
Ø VT82C686B
The VT82C686B PSIPC (PCI Super-I/O integrated Peripheral Controller)
is a high integration, high performance, power-efficient, and high
compatibility device that supports Intel and non-Intel based processor to
PCI bus bridge functionality to make a complete Microsoft PC99compliant PCI/ISA system In addition to complete ISA extension bus
functionality, the VT82C686B includes standard intelligent peripheral
controllers:
1) Master mode enhanced IDE controller with dual channel DMA engine
and interlaced dual channel commands. Dedicated FIFO coupled with
scatter and gather master mode operation allows high performance
transfers between PCI and IDE \devices. In addition to standard PIO and
DMA mode operation, the VT82C686B also supports the UltraDMA-33
standard to allow reliable data transfer rates up to 33MB/sec throughput.
The VT82C686B also supports the UltraDMA-66/100 standard. The
IDE controller is SFF-8038I v1.0 and Microsoft Windows-family
compliant.
2) Universal Serial Bus controller that is USB v1.1 and Universal HCI
v1.1 compliant. The VT82C686B includes the root hub with four
function ports with integrated physical layer transceivers. The USB
controller allows hot plug and play and isochronous peripherals to be
inserted into the system with universal driver support. The controller
also implements legacy keyboard and mouse support so that legacy
14
Motherboard DescriptionSY-7VCA2
software can run transparently in non-USB-aware operating system
environment.
3) Keyboard controller with PS2 mouse support.
4) Real Time Clock with 256 byte extended CMOS. In addition to the
standard ISA RTC functionality, the integrated RTC also includes the
date alarm, century field, and other enhancements for compatibility with
the ACPI standard.
5) Hardware monitoring subsystem for managing system/ motherboard
voltage levels, temperatures, and fan speeds
6) Full System Management Bus (SMBus) interface.
7) Two 16550-compatible serial I/O ports with infrared communications
port option. A third serial port is available to be dedicated to the IR
interface.
compatible sound system. Hardware soundblaster-pro and hardwareassisted FM blocks are included for Windows DOS box and real-mode
DOS compatibility. Loopback capability is also implemented for
directing mixed audio streams into USB and 1394 speakers for high
quality digital audio
9) Two game ports and One MIDI port
10) ECP/EPP-capable parallel port
11) Standard floppy disk drive interface
12) Distributed DMA capability for support O ISA legacy DMA over
the PCI bus. Serial IRQ is also supported for docking and non-docking
application.
13) Plug and Play controller that allows complete steerability of all PCI
interrupts and internal interrupts/ DMA channels to any interrupt
channel. One additional steerable interrupt channel is provided to allow
plug and play and reconfigurability of onboard peripherals for Windows
family compliance.
The VT82C686B also enhances the functionality of the standard ISA
peripherals. The integrated interrupt controller supports both edge and
15
Motherboard DescriptionSY-7VCA2
level triggered interrupts channel by channel. The integrated DMA
controller supports type F DMA in addition to standard ISA DMA modes.
Compliant with the PCI2.2 specification, the VT83C686B supports
delayed transactions and remote power management so that slower ISA
peripherals do not block the traffic of the PCI bus. Special circuitry is built
in to allow concurrent operation without causing dead lock even in a PCIto PCI bridge environment. The chip also includes eight levels
(doublewords) of line buffers from the PCI bus to the ISA bus to further
enhance overall system performance.
1-10 I/O INTERFACE CONTROLLER
The motherboard uses the VT82C686B Super-I/O controller which
features:
Ø Supports 2 serial ports, IR port, parallel port, and floppy disk
controller functions
Ø Two UARTs for Complete Serial Ports
Even, odd, stick or no parity bit generation and detection
Programmable baud rate generator
High speed baud rate (230Kbps, 460Kbps) support
Independent transmit/receiver FIFOs
Modem Control
Plug and play with 96 base IO address and 12 IRQ options
Ø One dedicated IR port
Third serial port dedicated to IR function
IR function either through the two complete serial ports or the
third dedicated port
Infrared-IrDA (HPSIR) and ASK (Amplitude Shift Keyed) IR
Ø Multi-mode parallel port
Standard mode, ECP and EPP support
Plug and play with 192 base IO address, 12 IRQ and 4 DMA
options
Ø Floppy Disk Controller
16bytes of FIFO
16
Motherboard DescriptionSY-7VCA2
Data rates up to 1Mbps
Perpendicular recording driver support
Two FDDs with drive swap support
Plug and play with 48 base IO address, 12 IRQ and 4 DMA
options
The Setup program provides configuration option for the I/O controller.
1-10.1 Serial Ports
The motherboard has two 9-pin D-Sub serial port connectors located on
the back panel. The NS16C5450-compatible UARTs support data transfers
at speeds up to 115.2 Kbits/sec with BIOS support.
1-10.2 Parallel Port
The connector for the multimode bi-directional parallel port is a 25-pin DSub connector located on the back panel of the motherboard. In the Setup
program, there are four options for parallel port operation:
l Compatible (standard mode)
l Bi-directional (PS/2 compatible)
l Bi-directional EPP. A driver from the peripheral manufacturer is
required for operation.
l Bi-directional high-speed ECP
1-10.3 Diskette Drive Controller
The I/O controller is software compatible with the 82077 diskette drive
controller and supports both PC-AT and PS/2 modes. In the Setup program,
the diskette drive interface can be configured for the following diskette
drive capacities and sizes.
l 360 KB, 5.25-inch
l 1.2 MB, 5.25-inch
l 720 KB, 3.5-inch
l 1.2 MB. 3.5-inch (driver required)
l 1.25-1.44 MB, 3.5-inch
l 2.88 MB, 3.5-inch
17
Motherboard DescriptionSY-7VCA2
1-10.4 PS/2 Keyboard and Mouse Interface
PS/2 keyboard and mouse connectors are located on the back panel of the
motherboard. The +5 V lines to keyboard and mouse connectors are
protected with a fuse that prevents motherboard components from being
damaged when an over-current condition occurs.
Note
The mouse and keyboard can be plugged into either PS/2 connector.
Power to the computer should be turned off before a keyboard or mouse is
connected or disconnected.
The keyboard controller contains code, which provides the traditional
keyboard and mouse control functions, and also supports Power On/Reset
password protection. Power On/Reset password can be specified in the
BIOS Setup program.
The keyboard controller also supports the hot-key sequence
<Ctrl><Alt><Del>, software reset. This key sequence resets the
computer’s software by jumping to the beginning of the BIOS code and
running the Power On Self Test (POST).
1-10.5 Infrared Support
On the front panel I/O connector, there are six pins that support Hewlett
Packard HSDL-1000 compatible infrared (IR) transmitters and receivers.
In the Setup program, Serial Port B can be direct4d to a connected IR
device. (In this case, the Serial Port B connector on the back panel cannot
be used.) The IR connection can be used to transfer files to or from
portable devices like laptops, PDAs, and printers. The Infrared Data
Association (IrDA) specification supports data transfers of 115Kbits/sec at
a distance of 1 meter.
1-11 HARDWARE MONITOR
The optional hardware monitor subsystem provides low-cost
instrumentation capabilities. The features of the hardware monitor
18
Motherboard DescriptionSY-7VCA2
subsystem include:
Ø An integrated ambient temperature sensor
Ø Fan speed sensors, which monitor the fan 1 and fan 2 connector.
Ø Power supply voltage monitoring to detect levels above or below
acceptable values
When suggested ratings for temperature, fan speed, or voltage are
exceeded, an interrupt is activated. The hardware monitor component
connects to the SMBus.
1-12 WAKE ON LAN TECHNOLOGY
Wake on LAN technology enables remote wakeup of the computer
through a network. Wake on LAN technology requires a PCI add-in
network interface card (NIC) with remote wakeup capabilities. The remote
wakeup connector on the NIC must be connected to the onboard Wake on
LAN connector. The NIC monitors network traffic at the Ethernet
interface; upon detecting a Magic Packet, the NIC asserts a wakeup signal
that powers up the computer. This feature uses the Wake on LAN
connector.
*
CAUTION
For Wake on LAN, the 5-V standby line for the power supply must be
capable of delivering +5V ±5 % at 720 mA. Failure to provide adequate
standby current when implementing Wake on LAN can damage the power
supply.
19
Hardware InstallationSY-7VCA2
Chapter 2
HARDWARE INSTALLATION
Congratulations on your purchase of SY-7VCA2 Motherboard. You are
about to install and connect your new Motherboard.
Note: Do not unpack the Motherboard from its protective antistatic packaging until you have made the following preparations.
2-1 PREPARATIONS
Gather and prepare all the following hardware equipment to complete the
installation successfully:
1. Socket 370 processor with built-in CPU cooling fan (boxed type).
Note: This Motherboard supports non-boxed type CPUs. The heavier
CPU cooling fan requires the installation of a CPU support stand.
2. DIMM memory module (s)
3. Computer case and chassis with adequate power supply unit
4. Monitor
5. PS/2 Keyboard
6. Pointing Device (PS/2 mouse)
7. Speaker(s) (optional)
8. Disk Drives: HDD, CD-ROM, Floppy drive…
9. External Peripherals: Printer, Plotter, and Modem (optional)
10. Internal Peripherals: Modem and LAN cards (optional)
20
Hardware InstallationSY-7VCA2
2-2 UNPACKING THE MOTHERBOARD
When unpacking the Motherboard, check for the following items:
u The SY-7VCA2 VT82C694X AGP/PCI Motherboard
u The Quick Start Guide
u The Installation CD-ROM
u SOYO Bonus Pack CD-ROM
u One IDE Device ATA 66 Flat Cable
u One Floppy Disk Drive Flat Cable
Warning: Do not unpack the Motherboard from its anti-static
packaging until you are ready to install it.
Like most electronic equipment, your Motherboard may be damaged by
electrostatic discharge. To avoid permanent damage to components ground
yourself while working by using a grounding strap. Otherwise, ground
yourself frequently by touching the unpainted portion of the computer
chassis to drain the static charges.
Handle the Motherboard carefully, holding it by the edges.
You are now ready to start the installation.
21
Hardware InstallationSY-7VCA2
2-3 INSTALLATION GUIDE
We will now begin the installation of the Motherboard. Please follow the
step-by-step procedure designed to lead you to a complete and correct
installation.
Warning: Turn off the power to the Motherboard, system
chassis, and peripheral devices before performing any work on
the Motherboard or system.
BEGIN THE INSTALLATION
22
Hardware InstallationSY-7VCA2
2-3.1 CPU Installation
Your SY-7VCA2 motherboard comes with a CPU retention set kit. The
retention set is used to hold the processor attached to the Socket 370 CPU
connector on the motherboard.
Mark your CPU Frequency:
your CPU that should be clearly marked on the CPU cover.
Record the working frequency of
FSB 66MHz
400MHz (66 x 6.0)466MHz (66 x7.0)533MHz (66 x 8.0) 600MHz (66 x 9.0) 667MHz (66 x 10.0)
433MHz (66 x 6.5)500MHz (66 x7.5)566MHz (66 x 8.5) 633MHz (66 x 9.5) 700MHz (66 x 10.5)
FSB 100MHz
500MHz (100 x 5.0)600MHz (100 x 6.0)700MHz (100 x 7.0)800MHz (100 x 8.0)
550MHz (100 x 5.5)650MHz (100 x 6.5)750MHz (100 x7.5)850MHz (100 x 8.5)
processor & VIA Cyrix processor that you have purchased separately, follow
these instructions.
To mount the Pentium® & Celeron
TM
1. Lift the socket handle up to a vertical position.
23
Hardware InstallationSY-7VCA2
2. Align the blunt edge of the CPU with the matching pinhole
distinctive edge on the socket.
3. Seat the processor in the socket completely and without forcing.
4. Then close the socket handle to secure the CPU in place.
24
Hardware InstallationSY-7VCA2
Remember to connect the CPU Cooling Fan to the
appropriate power connector on the Motherboard. The fan is
a key component that will ensure system stability. The fan
prevents overheating, therefore prolonging the life of your
CPU.
2-3.1.1 CPU Fan Installation
Your Socket 370 processor kit comes with a cooling fan. Mount the fan on
the processor according to the instructions provided by the manufacturer.
The fan is a key component that will ensure system stability. The fan
prevents overheating, therefore prolonging the life of your CPU.
Note: Remember to connect the fan to the appropriate power source.
25
Hardware InstallationSY-7VCA2
SDRAM
SDRAM
1
84
DI
DIMM 2
DIMM 3
2-3.2 SDRAM Memory Module Installation
®
®
MM 1
Your board comes with three DIMM sockets, providing support for up to
1.5GB of main memory using unbuffered and registered DIMM modules
from 8MB to 512MB. On this motherboard, DRAM speed can be set
independent from the CPU front side bus speed. Depending on the DRAM
clock speed setting in the BIOS setup (Chapter 3), appropriate memory
modules must be used. For 66MHz DRAM speed, use PC66 memory; for
100MHz DRAM speed, use PC100 memory; for 133MHz DRAM speed,
use PC133 memory.
1
84
26
Hardware InstallationSY-7VCA2
Memory Configuration Table
Number of Memory
Modules
RAM Type
Memory Module Size
(MB)
DIMM 1DIMM 2DIMM 3
SDRAM
8/16/32/64/128/256/512 MB
27
Hardware InstallationSY-7VCA2
SDRAM
SDRAM
IDE 2
IDE 1
Pin -1
IDE
39
39
40-pin
80-Conductor
2-3.3 Motherboard Connector
2-3.3.1 IDE Device Installation (HDD, CD-ROM)
®
®
Primary
Secondary
IDE
This Motherboard offers two primary and secondary IDE device
connectors (IDE1, IDE2). It can support up to four high-speed Ultra DMA
33/66/100HDD or CD-ROM.
Connect one side of the ATA66/100 flat cable to the IDE device (HDD or
CD-ROM) and plug the other end to the primary (IDE1) or secondary
(IDE2) directionally keyed IDE connector on the Motherboard. The
ATA66/100 cable is backward compatible with ATA33 HDDs.
This Motherboard can support up to four HDDs.
ATA 66/100
Flat Cable
1
1
28
Hardware InstallationSY-7VCA2
SDRAM
SDRAM
33
33
2-3.3.2 Floppy Drive Installation
®
®
Pin -1
FDC
Floppy Drive
Connector
The system supports 5 possible floppy drive types: 720 KB, 1.2 MB,
1.44 MB, 2.88 MB, and LS-120.
Connect one side of the 34-pin flat cable to the floppy drive and plug the
other end to the floppy drive connector on the Motherboard.
This Motherboard can support up to 2 floppy drives.
1
1
29
Hardware InstallationSY-7VCA2
SDRAM
SDRAM
Power LED
Pin Assignment
GND
Speaker
LED
LED
+
+
+
_
_
2-3.3.3 Front Panel Connections
®
Power
LED
_
+
_
ResetPWRBT
®
Plug the computer case's front panel devices to the corresponding headers
on the Motherboard.
1. Power LED
Please install according to the following pin assignment: pin 1,3 are for
Power LED.
STR
HDD
+5V+5V
+
_
NCNC
30
Hardware InstallationSY-7VCA2
Reset Pin Assignment
Power Good
GND
Speaker Pin Assignment
Speaker out
HDD LED Pin Assignment
LED Anode
LED Cathode
2. Reset
Plug the Reset push-button cable into the 2-pin Reset header on the
Motherboard. Pushing the Reset button on the front panel will cause the
system to restart the boot-up sequence.
1
3. Speaker
Attach the 4-pin PC speaker cable from the case to the Speaker header on
the Motherboard.
_
+
+5V
4. IDE LED
Attach the 2-pin IDE device LED cable to the corresponding IDE LED
header on the Motherboard. This will cause the LED to light up when an
IDE (HDD, CD-ROM) device is active.
NC NC
+
_
31
Hardware InstallationSY-7VCA2
PWRBT Pin Assignment
Power On/Off
GND
STR LED Pin Assignment
LED Anode
LED Cathode
5. ATX Power On/Off Switch
Attach the 2-pin momentary type switch to the PWRBT header for turning
On or Off your ATX power supply.
1
6. STR LED
The STR LED is connected to the Voltage that feeds the DIMM sockets.
Therefore the following table applies:
Suspend to RAM Normal OperationPower Off
STR LEDONONOFF
_
+
32
Hardware InstallationSY-7VCA2
SDRAM
SDRAM
PRT
PS/2 KB
Connector
PS/2 Mouse
MIC JACK
JOYSTICK
COM2
2-3.3.4 Back Panel Connections
All external devices such as the PS/2 keyboard, PS/2 mouse, printer,
modem, USB can be plugged directly onto the Motherboard back panel.
Only after you have fixed and locked the Motherboard to the computer
case can you start connecting the external peripheral devices.
When connecting an external device, use the following figure to locate and
identify which back panel connector to plug the device to.
Connector
USB 1
COM 1
LINE-OUT
LINE-IN
USB2
®
®
33
Hardware InstallationSY-7VCA2
Pin5
KBD Clock
Pin5
Mouse Clock
1. Onboard Serial Ports COM1/COM2
External peripherals that use serial transmission scheme include:
- serial mouse,
- and modem.
Plug the serial device cables directly into the COM1/COM2 9-pin male
connectors located at the rear panel of the Motherboard.
2. Parallel Port PRT
This parallel port is used to connect the printer or other parallel devices.
Plug the parallel device cable into the 25-pin female connector located at
the rear panel of the Motherboard.
3. PS/2 Keyboard
Plug the keyboard jack directly into the 6-pin female PS/2 keyboard
connector located at the rear panel of the Motherboard.
Pin6
NC
Pin4
VCC
Pin2
NC
Pin3
GND
Pin1
KBD DATA
4. PS/2 Mouse
Similarly, plug the mouse jack directly into the 6-pin female PS/2 mouse
connector.
Pin6
NC
Pin4
VCC
Pin2
NC
Pin3
GND
Pin1
Mouse DATA
34
Hardware InstallationSY-7VCA2
1
5
None
(+)Data
(-)Data
USB2
USB2
5.Universal Serial Bus USB1 (2 Ports)/USB2 (2 Ports)
This Motherboard provides four USB ports for your additional devices.
Plug the USB device jack into the available USB connector USB1 or
USB2.
- Standard device drivers come with the Win98 for commonly used
USB devices.
- With Win95, use the flow UHCI specifications. To use USB devices
under Win95, usually you have to install the device that driver comes
with the USB device you have purchased.
USB2 is available. To make use of these USB ports, purchase a USB cable
from your dealer. The lay-out of USB2 is as follows:
GND
GND
(+)Data
(-)Data
Power
6. Onboard Joystick port/audio
This Motherboard provides Joystick port and audio.
- Attach the joystick cable to the 15-pin JOYSTICK port at the rear
panel of you motherboard.
- This Motherboard features three built-in audio-stereo ports (labeled
line-in, line-out, and mic jack) convenient to directly plug-in all your
external audio devices.
10
9
8
7
6
35
4
3
2
GND
Power
Hardware InstallationSY-7VCA2
MP-Wake-up
2-3.3.5 Other Connections
1.Wake-On-LAN (WOL)
Attach the 3-pin connector from the LAN card which supports the WakeOn-LAN (WOL) function to the JP10 header on the Motherboard. This
WOL function lets users wake up the connected computer through the
LAN card.
Please install according to the following pin assignment:
Wake-On-LAN
JP44 Pin Assignment
GND5VSB
1 23
36
Hardware InstallationSY-7VCA2
Serial Infrared (IR1) Connector
2
3
4
5
IRTX
2. Infrared (IR1)
Plug the 5-pin infrared device cable to the IR1 header. This will enable the
infrared transfer function. This Motherboard meets both the ASKIR and
HPSIR specifications.
Please install according to the following pin assignment:
IR1 Pin Assignment
1
VCC
IRRX
GND
3. Other Display Cards
Insert other types of VGA cards into the PCI or ISA expansion slots
according to card specifications.
37
Hardware InstallationSY-7VCA2
CPU Cooling Fan
CPUFAN Pin Assignment
SENSOR
4. Cooling Fan Installation
(1) CPU Cooling Fan
After you have seated the CPU properly on the processor, attach the 3-pin
fan cable to the CPUFAN connector on the Motherboard. The fan will stop
when the system enters into Suspend Mode. (Suspend mode can be
enabled from the BIOS Setup Utility, [POWER MANAGEMENT] menu.)
To avoid damage to the system, install according to the following pin
assignment:
132
12VGND
38
Hardware InstallationSY-7VCA2
SENSOR
(2) Chassis Cooling Fan
Some chassis also feature a cooling fan. This Motherboard features a
CHAFAN connector to provide 12V power to the chassis fan. Connect the
cable from the chassis fan to the CHAFAN 3-pin connector. Install
according to the following pin assignment:
Chassis Cooling Fan
CHAFAN Pin Assignment
132
12VGND
Note: CPUFAN must be installed for this Motherboard, CHAFAN is
optional.
39
Hardware InstallationSY-7VCA2
Right
CD Line-in)
Pin Assigment
Right
5. CD Line-in (CDIN1,CDIN2)
This Motherboard provides two CD-Line in connectors. Please connect the
4-pin audio cable from your CD-ROM drive to either CDIN1 or CDIN2.
(It fits in only one, depending on the cable that came with your CD-ROM
drive)
Please install according to the following pin assignment:
CDIN1,CDIN2(
CDIN2
1234
GND
Left
GND
Left
CDIN1
2-3.3.6 AGP VGA Card
Insert the AGP VGA card into the AGP slot. Then connect the monitor
information cable to the AGP card back plane external connector.
Follow the manufacturer's instructions to perform the AGP VGA drivers
installation.
GND
GND
1234
40
Hardware InstallationSY-7VCA2
SDRAM
SDRAM
ATX Power
2-3.3.7 ATX Power Supply
Plug the connector from the power directly into the 20-pin male ATX PW
connector on the Motherboard, as shown in the following figure.
®
®
Warning: Follow these precautions to preserve your
Motherboard from any remnant currents when connecting to
ATX power supply:
Turn off the power supply and unplug the power cord of the
ATX power supply before connecting to ATX PW connector.
The Motherboard requires a power supply with at least 200 Watts and a
"power good" signal. Make sure the ATX power supply can take at least
720 mA * load on the 5V Standby lead (5VSB) to meet the standard ATX
specification.
* Note: If you use the Wake-On-LAN (WOL) function, make sure the
ATX power supply can support at least 720 mA on the 5V Standby lead
(5VSB).
41
Hardware InstallationSY-7VCA2
3.3V
-12V
PS-ON
ATX Power
SDRAM
SDRAM
Please install the ATX power according to the following pin assignment:
12V
5VSB
PW-OK
GND
5V
GND
5V
5V
-5V
GND
GND
ØPay special care to the directionality.
GND
5V
GND
GND
3.3V
3.3V
2-3.3.8 AMR (Audio Modem Riser)Connector
This motherboard supports AMR (Audio-Modem Riser) slot that
facilitates audio or modem riser card expansion. Since AC97 audio codec
is built-in down on the motherboard, only “Secondary” mode modem riser
(MR) card can be used on the AMR slot.
®
®
42
Hardware InstallationSY-7VCA2
123
1
2
3
2-3.4 CMOS Clearing (JP5)
After you have turned off your computer, clear the CMOS memory by
momentarily shorting pins 2-3 on jumper JP5, for a few seconds. Then
restore JP5 to the initial 1-2 jumper setting in order to recover and retain
the default settings.
Jumper JP5 can be easily identified by its white colored cap.
CMOS
Clearing
JP5 Setting
Clear CMOS DataRetain CMOS Data
Short pin 2-3 for
at least 5 seconds to
clear the CMOS
Short pin 1-2
to retain new
settings
Note: You must unplug the ATX power cable from the ATX power
connector when performing the CMOS Clear operation.
2-3.5 Power On
You have now completed the hardware installation of your Motherboard
successfully.
1. Turn the power on
2. To enter the BIOS Setup Utility, press the <DEL> key while the system
is performing the diagnostic checks,
Note: If you have failed to enter the BIOS, wait until the boot up
sequence is completed. Then push the RESET button and press
<DEL> key again at the beginning of boot-up, during diagnostic
checks.
43
Hardware InstallationSY-7VCA2
Repeat this operation until you get the following screen.
3. The BIOS Setup screen appears:
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
4Soyo Combo Feature4PC Health Status
4Standard CMOS FeaturesLoad Optimized Defaults
4Advanced BIOS FeaturesLoad Fail - Safe Defaults
4Advanced Chipset FeaturesSet Supervisor Password
4Integrated PeripheralsSet User Password
4Power Management SetupSave & Exit Setup
4PnP/PCI ConfigurationsExit Without Saving
This Motherboard does not use any hardware jumpers to set the CPU
frequency. Instead, CPU settings are software configurable with the BIOS
[SOYO COMBO SETUP]. The [SOYO COMBO SETUP] menu
combines the main parameters that you need to configure, all in one menu,
for a quick setup in BIOS.
After the hardware installation is complete, turn the power switch on, then
press the <DEL> key during the system diagnostic checks to enter the
Award BIOS Setup program. The CMOS SETUP UTILITY will display
on screen. Follow these steps to configure the CPU settings.
44
Hardware InstallationSY-7VCA2
Step 1. Select [STANDARD CMOS SETUP]
Set [Date/Time] and [Floppy drive type], then set [Hard Disk Type] to
“Auto”.
Step 2. Select [LOAD SETUP DEFAULT]
Select the “LOAD SETUP DEFAULT” menu and type “Y” at the prompt
to load the BIOS optimal setup.
Step 3. Select [SOYO COMBO SETUP]
Move the cursor to the [CPU Frequency] field to set the CPU frequency.
Available [CPU Frequency] settings on your SY-7VCA2 Motherboard are
detailed in the following table.
If you set this field to [Manual], you are then required to fill in the next
two consecutive fields: (1) the CPU Host/PCI Clock, and (2) the CPU
Ratio.
CPU Frequency (MHz)667MHz (66 x 10.0)600MHz (133 x 4.5)
Manual700MHz (66 x 10.5)666MHz (133 x 5.0)
400MHz (66 x 6.0)500MHz (100 x 5.0)733MHz (133 x 5.5)
433MHz (66 x 6.5)550MHz (100 x 5.5)800MHz (133 x 6.0)
466MHz (66 x 7.0)600MHz (100 x 6.0)866MHz (133 x 6.5)
500MHz (66 x 7.5)650MHz (100 x 6.5)933MHz (133 x 7.0)
533MHz (66 x 8.0)700MHz (100 x 7.0)1000MHz (133 x 7.5)
566MHz (66 x 8.5)750MHz (100 x 7.5)1.13GHz (133 x 8.5)
600MHz (66 x 9.0)800MHz (100 x 8.0)
633MHz (66 x 9.5)850MHz (100 x 8.5)
Select the working frequency of your Pentium® & CeleronTM processor & VIA Cyrix processor among
these preset values.
Note:Mark the checkbox that corresponds to the working frequency of your Pentium® III,
Celeron processor in case the CMOS configuration should be lost.
Step 4. Select [SAVE & EXIT SETUP]
Press <Enter> to save the new configuration to the CMOS memory, and
continue the boot sequence.
45
Hardware InstallationSY-7VCA2
2-3.7 Troubleshooting at First Start
Video (no display) related issues
I built a new computer system using a Soyo board and nothing
happens when turning it on, no video and no beeps from the PC
speaker. What is happening and how can it be fixed?
No screen and no beeps mean that your CPU and motherboard do not
work at all. It could be that the CPU is not seated correctly or that a
component on the M/B is grounded (shorted) with the case. Also make
sure to check the voltage setting switch (110V/220V) on the back of the
power supply. To isolate the problem do the following:
1. Press and hold down on the “Ins” (insert) key while turning on the
computer until you get video. If you do not get video then,
2. Double-check jumpers setting on you motherboard and remove all
add-on cards, unplug all hard-disk and floppy-disk drive cables and see if
you can hear some beeps. If you still do not get any beeps, then try putting
the motherboard on the table (to isolate it from the case) with the CPU and
speaker only, and give it one more try.
I hear a series of beeps and I do not get anything from my monitor.
What could be wrong?
The following lists some basic beep codes and their possible meanings:
• One long beep and 3 very short beeps - The video card is not
detected by the motherboard. Please re-seat your video card. If
you are using an AGP card, please push your AGP card down
real hard. You may have to push VERY hard without the AGP
card mounting screw. Make sure not to insert the card the other
way around.
• Continuous beeps – One or more of the memory modules is not
seated correctly in its socket.
46
Hardware InstallationSY-7VCA2
My PCI VGA card works fine with my system, but when I put in a
new AGP card, it does not give me any video. Is my AGP slot bad?
This is a common problem with AGP video cards. The reason is that your
AGP card did not get seated into the AGP slot fully and firmly. Please
push your AGP card down into the socket real hard, it should snap twice.
You may have to unscrew the AGP card to allow the card to go further
down. Do take care not to damage the card by using too much force.
I get distorted video my AGP card right after I save my bios. Why is
that?
The cause is likely that your AGP card is not running at the correct bus
speed. To fix this, please clear the CMOS via JP5 and if it still does not
work, please upgrade your motherboard bios to the latest version.
BIOS Issues
Where can I find the BIOS revision of my mainboard?
It will be displayed on the up-left corner on the screen during boot-up. It
will show as your board type followed by the revision number, such as
5EH_2CA1 (meaning revision 2CA1 for the SY-5EH board) or 6BA+
IV_2AA2 which means SY-6BA+ IV motherboard with 2AA2 bios.
Where can I find the latest BIOS of my motherboard?
Please go to the technical support page of one of the SOYO websites
(Taiwan: www.soyo.com.tw), and look up your motherboard to find
the latest BIOS revision.
Hard disk, floppy drive, CD-ROM etc
When I boot up my new computer I got "floppy boot failure" and the
LED on the floppy stays on
Make sure the red wire of floppy ribbon cable goes to Pin1 on the floppy
drive side (don't trust the "key lock" or "notch") and use the end-connector
of the cable (don't use middle one).
Modem issues
I get an "I/O Conflict" message when I turn on my system and I can
not get my modem to work
47
Hardware InstallationSY-7VCA2
What you need to do is to disable 'COM2' (or UART2 or serial port 2) in
the bios under integrated peripheral setup.
I have installed my modem drivers several times and I still cannot get
my modem to work. Why?
If you are sure that the modem driver has been installed correctly, then you
need to install the south bridge driver from the SOYO CD, this is because
Windows does not properly recognize relatively new chipsets.
Audio Issues
I do not get any sound from my sound card. What could be wrong?
Please make sure the speaker is connected to the speaker out port on your
sound card.
In Device Manager, I keep getting yellow exclamation signs on my
sound port even though I have installed my sound driver several times
and I could not get my sound card to work. What is wrong?
It is likely that you did not have the correct driver installed. If you are sure
that the correct sound driver has been installed, then please install the
'south bridge' driver for the motherboard.
The sound is working in my system, but when I play CD music from
the CD-ROM, I do not get any sound. What is wrong?
This is because the 3-wire audio cable from the CD-ROM to the sound
card is not connected or it is loose.
The sound from my sound card is distorted when Windows starts.
What is wrong?
First, if you are using an ISA sound card, please make sure the IRQ
needed for the sound card is set to 'Legacy ISA' in the bios. In other words,
if your ISA sound card takes IRQ5, then set IRQ5 to 'Legacy ISA'. Next,
install the 'south bridge' driver for the motherboard.
The sound and everything else works fine except that the recorder and
microphone do not work. What is wrong?
48
Hardware InstallationSY-7VCA2
This is because the recorder and microphone in the Windows are not
enabled. Please go to sound properties and enable them.
Lock up (freeze)
When I boot up my system, everything works fine. It sees my CPU
and memory, detects my hard drive, floppy drive and CD-ROM but
locks up at "Verify DMI pool data... ", and it won’t go any further.
What should I do?
Please clear the CMOS via JP5 then choose 'load setup default' in the bios
and save the bios and exit. Next, unplug all other add-on cards except the
video card and floppy drive controller, and see if it can boot from floppy.
Then put back the peripherals one by one to identify which one causes the
lockup. If you are running a Cyrix CPU, make sure the 'linear burst
function' is enabled in the bios.
I can not get my board to run properly.
Please make sure you have the latest bios and driver from the SOYO web
site at: http://www.soyo.com
2-3.8 Power Off
There are two possible ways to turn off the system:
1. Use the Shutdown command in the Start Menu of Windows 95/98
to turn off your computer.
2. Press the mechanical power-button and hold down for over 4
seconds, to shutdown the computer. If you press the power-button for
less than 4 seconds, then your system will enter into Suspend Mode.
49
Hardware InstallationSY-7VCA2
L
save space. At boot-up this code is decompressed and stored to RAM for faster
If the VGA card does not work or is not inserted at all, the system will display
At this point the BIOS is initializing the CPU. The L2 cache latency values are
show the BIOS testing the RAM by a running counter. After finishing the test,
This includes HD drives and ATAPI CD-ROM drives that are connected to the
The serial and parallel port registers are set to the values selected by the user.
At this point the BIOS passes control to the Operating System (OS). All LEDs
2-3.9 Debug LEDs
The Debug LEDs give an indication of the status of the system during boot-up. If
the system does not boot-up properly, use the table below to find out at what point
in boot-up sequence the problem arises. A x means the LED is off, a L means the
LED is lit.
CodeExplanation
X X X
D8 D3 D2 D1
X X L X
D8 D3 D2 D1
X X L L
D8 D3 D2 D1
X L X X
D8 D3 D2 D1
X L X L
D8 D3 D2 D1
X L L X
D8 D3 D2 D1
X L L L
D8 D3 D2 D1
L X X X
D8 D3 D2 D1
L X X L
D8 D3 D2 D1
L X L X
D8 D3 D2 D1
L X L L
D8 D3 D2 D1
L L X X
D8 D3 D2 D1
L L X L
D8 D3 D2 D1
L L L X
D8 D3 D2 D1
L L L L
D8 D3 D2 D1
Initialization of the chipset. The North-Bridge and South-Bridge registers will
be set to the most conservative values by the BIOS to make sure the system
boots up properly.
The BIOS is now decompressing the BIOS code into shadow RAM. Most of
the BIOS code is stored in the BIOS Flash ROM IC in compressed form to
execution.
The checksum for the decompressed code is calculated and checked. The
checksum is calculated by adding all data bytes together and storing the result
in the BIOS ROM. If the calculated checksum is different from the checksum
stored in the ROM, the code stored in the FLASH ROM is corrupted.
The chipset (North-Bridge and South-Bridge) registers are set to the values
selected by the user.
Now the BIOS will set the CPU Vcore voltage and the FSB bus frequency to
the user selected value. If the system stops at this point, the settings selected
by the user are inappropriate. Please select more conservative settings.
The Hardware Monitor Functionality is initialized. The settings the user
selected in the BIOS for the Hardware Monitor are written into the Hardware
Monitor registers.
this code for a short period of time.
set, and more important, the CPU micro-code is written into the CPU.
Now the system is testing the RAM inserted on the board. The screen will
the screen will show the amount of RAM in your system.
The super I/O registers are set to the default values. This includes the serial,
parallel and IR etc settings.
At this point the IDE busses (primary and secondary) are scanned for devices.
IDE bus. After scanning the detected devices are displayed on screen.
Now the BIOS will scan the peripheral busses for add-on cards. This includes
the PCI and AGP busses. If any add-on cards are detected, the resources it
requires are assigned by the BIOS in accordance with user settings.
The ESCD and DMI (Desktop Management Interface) values are checked. If
there are changes, the BIOS will flash the new values into the BIOS Flash
ROM IC.
will be on and will stay on to indicate a successful boot.
50
Hardware InstallationSY-7VCA2
You are now ready to configure your system with the BIOS setup program.
Go to Chapter 3: BIOS SETUP
51
BIOS Setup UtilitySY-7VCA2
Chapter 3
BIOS SETUP UTILITY
This Motherboard's BIOS setup program uses the ROM PCI/ISA BIOS
program from Award Software Inc.
To enter the Award BIOS program's Main Menu:
1. Turn on or reboot the system.
2. After the diagnostic checks, press the [Del] key to enter the Award
BIOS Setup Utility.
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
4Soyo Combo Feature4PC Health Status
4Standard CMOS FeaturesLoad Fail - Safe Defaults
4Advanced BIOS FeaturesLoad Optimized Defaults
4Advanced Chipset FeaturesSet Supervisor Password
4Integrated PeripheralsSet User Password
4Power Management SetupSave & Exit Setup
4PnP/PCI ConfigurationsExit Without Saving
l Use the arrow keys to move between items and select fields.
l From the Main Menu press arrow keys to enter the selected submenu.
Modifying selected items
l Use the [Up]/[Down] keys to modify values within the selected fields.
Some fields let you enter values directly.
52
BIOS Setup UtilitySY-7VCA2
Hot Keys: Function keys give you access to a group of commands
throughout the BIOS utility.
FunctionCommandDescription
F1
F5
F6
General Help
Previous
Values
Load FailSafe Defaults
Gives the list of options available for each
item.
Restore the old values. These are the values
that the user started the current session with.
Loads all items with the most conservative
values.
Load
F7
Optimized
Loads all options with the optimize values.
Defaults
F10
[Esc]Exit
[Enter]
SaveSaves your changes and reboots the system.
Returns at anytime and from any location to
the Main Menu.
Select
Will display a overlapping window with all
options for the current item.
Using the +, –, Page Up and Page Down
[+/–/PU/PD] Value
keys the user can toggle the value of the
current item.
53
BIOS Setup UtilitySY-7VCA2
Esc
F10
(Shift) F2
Esc
F10
(Shift) F2
SAVE AND EXIT SETUP
Select the [SAVE & EXIT SETUP] option from the Main Menu to save
data to CMOS and exit the setup utility. This option saves all your changes
and causes the system to reboot.
ROM PCI/ISA BIOS
CMOS SETUP UTILITY
STANDARD CMOS SETUP
BIOS FEATURES SETUP
CHIPSET FEATURES SETUP
POWER MANAGEMENT SETUP
PNP/PCI CONFIGURATION
LOAD SETUP DEFAULTS
LOAD BIOS DEFAULTS
: Quit
: Save & Exit Setup
AWARD SOFTWARE, INC.
SAVE to CMOS and EXIT
Time, Date, Hard Disk Type…
INTEGRATED PERIPHERALS
SUPERVISOR PASSWORDUSER PASSWORDIDE HDD AUTO DETECTIONSAVE & EXIT SETUPEXIT WITHOUT SAVING
↑ ↓ → ←
: Select Item
: Change Color
Type [Y] to save the
changes and exit or [N]
to return to the Main
Menu and keep current
values.
EXIT WITHOUT SAVING
Selecting the [EXIT WITHOUT SAVING] option allows you to abandon
all data and exit setup, therefore ignoring all your changes.
ROM PCI/ISA BIOS
CMOS SETUP UTILITY
STANDARD CMOS SETUP
BIOS FEATURES SETUP
CHIPSET FEATURES SETUP
POWER MANAGEMENT SETUP
PNP/PCI CONFIGURATION
LOAD SETUP DEFAULTS
LOAD BIOS DEFAULTS
: Quit
: Save & Exit Setup
AWARD SOFTWARE, INC.
Quit Without Saving (Y/N)? _
Time, Date, Hard Disk Type…
INTEGRATED PERIPHERALS
SUPERVISOR PASSWORD
USER PASSWORDIDE HDD AUTO DETECTIONSAVE & EXIT SETUPEXIT WITHOUT SAVING
↑ ↓ → ←
: Select Item
: Change Color
Type [Y] to abandon
changes and exit or [N]
to return to the Main
Menu and keep current
values.
54
BIOS Setup UtilitySY-7VCA2
3-1 SOYO COMBO SETUP
This Motherboard does not use any hardware jumpers to set the CPU
frequency. Instead, CPU settings are software configurable with the BIOS
[SOYO COMBO SETUP].
After the hardware installation is complete, turn the power switch on, then
press the <DEL> key during the system diagnostic checks to enter the
Award BIOS Setup program. The CMOS SETUP UTILITY will display
on screen. Then, select the [SOYO COMBO SETUP] option from the
main menu and press the <Enter> key.
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
Soyo Combo Feature
CPU/PCI FrequencyHW Default
CPU RatioX 3
Auto detect DIMM/PCI ClkEnabled
Spread SpectrumDisabled
C.I.H. 4-WAY ProtectionEnabled
CPU L2 Latency ControlDefault
x CPU L2 Latency Value0
CPU L2 Cache ECC Checking Enabled
Processor Number FeatureDisabled
Vcore Voltage AdjustNormal
Quick Power On Self TestEnabled
First Boot DeviceFloppy
Second Boot DeviceHDD-0
Third Boot DeviceLS/ZIP
Boot Other DeviceEnabled
OnChip SoundAuto
OnChip ModemAuto
áâàß:MoveEnter:Select+/-/PU/PD:Value F10:SaveESC:ExitF1:General Help
After you have selected the host clock, choose the right
multiplier for the CPU. Options are: [2, 2.5, 3., 3.5, 4, 4.5, 5,
5.5,6,6.5,7.0,7.5,8.0]. The CPU frequency is then defined as
[host clock freq.]x[multiplier], and should the working
frequency of your Pentium® III & Pentium® II processor.
Disabled
Enabled
When enabled, this item will
auto detect if the DIMM and
PCI socket have devices and
will send clock signal to DIMM
and PCI devices. When
disabled, it will send the clock
signal to all DIMM and PCI
socket.
Select the host clock of your
Socket 370 processor among
these values.
Note: For the Via 694X
chipset, 66 and 100 and
133 MHz host clock
frequencies are acceptable.
However, the system
stability is not guaranteed
for other frequencies due
to the limitations of this
chipset.
Default
Spread
Spectrum
DisabledDefault
Enabled
This item allows you to
enable/disable the spread
spectrum modulate.
56
BIOS Setup UtilitySY-7VCA2
3-1.2 C.I.H. 4-WAY Protection Settings
SettingDescriptionNote
C.I.H. 4WAY
Protection
Disabled
Enabled
When set to enabled, the BIOS can
only be programmed through
AWDFLASH, making sure that any
virus is unable to program the system
BIOS. Set to disable the BIOS can be
programmed the traditional way.
3-1.3 L2 Cache Memory
SettingDescriptionNote
CPU L2
Latency
Control
CPU L2
Latency Value
DefaultDefault
Manual
1~15If the item above is set to
Default
If set to Default, the CPU
default value for L2 cache
latency is used. If set to manual,
the ‘Latency Value’ item will
allow you to specify a latency
value.
‘manual’ , a latency value
ranging from 1 to 15 can be set.
The smaller the number, the
faster the performance.
However, the system may
become unstable at higher
speeds.
CPU L2 Cache
ECC Checking
Disabled
EnabledThis option activates the CPU
L2 cache ECC checking
function.
57
Default
BIOS Setup UtilitySY-7VCA2
core voltage. If the Vcore Voltage Adjust is set to
than the VID code specifies. For instance the CPU
3-1.4 Processor Number Feature
SettingDescriptionNote
Processor
Number
Feature
DisabledDefault
Enabled
Setting this item to enabled will allow
application programs to read the IDcode in your Pentium III CPU,
disabling this item will not allow any
program to read the CPU ID code.
The CPU notifies the board of what core voltage
it requires by its VID outputs. The on-board
voltage regulator uses the VID code to set the
normal, the Vcore will be exactly what the VID
code specifies. If an adjustment percentage is
selected the Vcore will be that percentage higher
VID code specifies 2.0V and the Vcore Voltage
adjust is set to +10.0% the actual CPU Voltage
will be 2.2V. This function should only be used if
the CPU is running on FSB Frequencies beyond
the CPU specifications, note that SOYO does not
guarantee system stability if this item is not set to
normal.
3-1.6 Quick Power On Self Test
SettingDescriptionNote
Quick Power
On Self Test
Disabled
EnabledProvides a fast POTS at boot-up.Default
58
BIOS Setup UtilitySY-7VCA2
3-1.7 System Boot Control Settings
System Boot
Control Settings
SettingDescriptionNote
First
/Second/Third
Boot Device
Boot Other
Device
OnChip
Sound/Modem
Floppy
LS/ZIP
HDD-0
SCSI
CDROM
HDD-1
HDD-2
HDD-3
LAN
Disabled
Disabled
Enabled
Disabled
Auto
Select Your Boot Device
Priority
Select Your Boot Device
Priority
This item allows you to
control the onboard AC 97
audio/ MC 97 Modem.
Default
Default
59
BIOS Setup UtilitySY-7VCA2
3-2 STANDARD CMOS SETUP
Select the [STANDARD CMOS SETUP] option from the Main Menu and
press [Enter] key.
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
Standard CMOS Features
Date (mm:dd:yy)Fri, Jan 1 1999
Time (hh:mm:ss)1 : 22 : 12
4 IDE Primary MasterPress Enter None
4 IDE Primary SlavePress Enter None
4 IDE Secondary MasterPress Enter None
4 IDE Secondary SlavePress Enter None
Drive A1.44M, 3.5 in.
Drive BNone
Floppy 3 Mode SupportDisabled
VideoEGA/VGA
Halt OnAll Errors
Base Memory640K
Extended Memory30720K
Total Memory31744K
áâàß:MoveEnter:Select+/-/PU/PD:Value F10:SaveESC:ExitF1:General Help
After you have completed the changes, press [Esc] key and follow the
instructions on your screen to save your settings or exit without saving.
63
BIOS Setup UtilitySY-7VCA2
3-3.1 Virus Warning
SettingDescriptionNote
Anti - Virus
Protection
DisabledDefault
Enabled
If set to enabled, the Paragon AntiVirus. Function will scan your boot
drive for boot virusses. If a boot
virus is detected, the BIOS will
display a warning message.
3-3.2 Cache Memory Options
SettingDescriptionNote
CPU Internal Cache
External Cache
Disabled
EnabledEnables the CPU's internal
Disabled
EnabledEnables the external
3-3.3 Floppy Driver Settings
SettingDescriptionNote
Swap Floppy
Drive
DisabledDefault
EnabledChanges the sequence of A and B
drives.
Default
cache.
Default
memory.
3-3.4 Boot Up Floppy Seek
SettingDescriptionNote
Boot Up Floppy
Seek
DisabledSeeks disk drives during boot up.
Disabling speeds boot up.
EnabledDefault
3-3.5 Boot Up NumLock Status
SettingDescriptionNote
Boot Up
NumLock
Status
OnPuts numeric keypad in
NumLock mode at boot-up.
OffPuts numeric keypad in arrow key
mode at boot-up.
64
Default
BIOS Setup UtilitySY-7VCA2
3-3.6 Gate A20 Options
SettingDescriptionNote
Gate A20
Options
NormalLets chipset control GateA20.
FastA pin in the keyboard controller
Choose the rate at which a
character is repeated when
holding down a key.
Default
Default
Typematic Delay
250 (msec)
500 (msec)
750 (msec)
1000 (msec)
Choose how long after
you press a key down the
character begins
repeating.
65
Default
BIOS Setup UtilitySY-7VCA2
3-3.8 Security Option
Use this feature to prevent unauthorized system boot-up or use of BIOS
Setup. The following table describes the security settings.
SettingDescription
Security Option
SystemEach time the system is booted, the
password prompt appears.
SetupIf a password is set, the password prompt
only appears when you attempt to enter the
BIOS Setup program.
3-3.9 Other Control Options
Other Control
Options
SettingDescriptionNote
OS Select for
DRAM>64MB
Report No FDD
For WIN 95
Video BIOS
Shadow
OS2When using an OS2 operating
system.
Non-OS2When using another,
non-OS2 operating system.
YesWindows will release IRQ line 6
(normally used by the Floppy
Disk Drive) after you disable
your on-board FDD and set this
field to [Yes].
NoWindows will reserve INT 6 for
your FDD, whether it is disabled
or not.
Disabled
Enabled
The BIOS is shadowed in a 16K segment if it
is enabled and if it has BIOS present.
These 16 segments can be shadowed from
ROM to RAM. BIOS shadow copies BIOS
code from slower ROM to faster RAM. BIOS
can then execute from RAM.
Default
Default
Default
66
BIOS Setup UtilitySY-7VCA2
3-4 ADVANCED CHIPSET FEATURES
Caution: Change these settings only if you are already familiar
with the Chipset.
The [Advanced Chipset Features] option changes the values of the chipset
registers. These registers control the system options in the computer.
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
Advanced Chipset Features
Bank 0/1 DRAM TimingSDRAM 8/10ns
Bank 2/3 DRAM TimingSDRAM 8/10ns
Bank 4/5 DRAM TimingSDRAM 8/10ns
DRAM ClockHost CLK
SDRAM Cycle Length3
Bank Interleave4 Bank
Memory HoleDisabled
P2C/C2P ConcurrencyEnabled
Fast R-W Turn AroundEnabled
CPU In Order Queue Size4 Level
System BIOS CacheableDisabled
Video RAM CacheableDisabled
AGP Aperture Size64M
AGP-4X ModeEnabled
AGP Driving ControlAuto
After you have completed the changes, press [Esc] and follow the
instructions on your screen to save your settings or exit without saving.
The following table describes each field in the Advanced Chipset Features
Menu and how to configure each parameter.
3-4.1 CHIPSET FEATURES SETUP
CHIPSET
FEATURES
SettingDescriptionNote
Bank 0/1, 2/3,
4/5 DRAM
Timing
DRAM Clock
SDRAM Cycle
Length
Bank
Interleave
Memory Hole
SDRAM
8/10ns
SDRAM
8ns
Normal
This item allows you to select the
value in this field, depending on
whether the board has paged
DRAMs or EDO (extended data
output) DRAMs.
Default
Medium
Fast
Turbo
Host ClockDefault
HCLK-33M
HCLK+33M
This item allows you to control the
DRAM speed.
2
When synchronous DRAM is
3
installed, the number of clock cycles
Default
of CAS latency depends on the
DRAM timing. Do not reset this
field from the default value
specified by the system designer.
4 BankIncrease DRAM performance.Default
Disabled
2 Bank
DisabledDefault
EnabledSome interface cards will map their
ROM address to this area. If this
occurs, select [Enabled] in this field.
P2C/C2P
Concurrency
Disabled
Enabled
This item allows you to
enable/disable the PCI to CPU, CPU
to PCI concurrency
68
Default
BIOS Setup UtilitySY-7VCA2
CHIPSET FEATURES SETUP (Continued)
CHIPSET
FEATURES
SettingDescriptionNote
Fast R-W
Turn Around
CPU In Order
Queue Size
System BIOS
Cacheable
Video RAM
Cacheable
AGP Aperture
Size
Disabled
Enabled
4 LevelDefault
1 Level
Disabled
EnabledThe ROM area F0000H-FFFFFH is
DisabledDefault
Enabled
64MDefault
4M, 8M,
16M, 32M,
128M,
256M.
This item controls the DRAM
timing. It allows you to enable/
disable the fast read/write turn
around.
This item is related to cache
performance. A queue size of 4
gives highest performance.
cacheable.
When synchronous DRAM is
installed, the number of clock cycles
of CAS latency depends on the
DRAM timing. Do not reset this
field from the default value
specified by the system designer
Select the size of Accelerated
Graphics Port (AGP) aperture. The
aperture is a portion of the PCI
memory address range dedicated for
graphics memory address space.
Host cycles that hit the aperture
range are forwarded to the AGP
without any translation.
Default
Default
AGP-4X Mode
AGP Driving
Control
Disabled
Enabled
AutoDefault
Manual
This item allows you to enable /
disable the AGP-4X Mode.
This item allows you to adjust the
AGP driving force. Choose Manual
to key in a AGP Driving Value in
the next selection. This field is
recommended to set in Auto for
avoiding any error in your system.
69
Default
BIOS Setup UtilitySY-7VCA2
CHIPSET FEATURES SETUP (Continued)
CHIPSET
FEATURES
SettingDescriptionNote
AGP Driving
Value
AGP Fast
Write
OnChip USB
USB
Keyboard
Support
CPU to PCI
Write Buffer
Min=0000
~
Max=00FF
DisabledDefault
Enabled
Disabled
Enabled
DisabledDefault
EnabledSelect Enabled if your system
Disabled
Enabled
This item allows you to adjust the
AGP driving force.
The VIA chipset will use fast write
to AGP if this item is enabled. Not
all AGP cards support fast write.
This should be enabled if your
system has a USB installed on the
system board and you want to use it.
Even when so equipped, if you add
a higher performance controller, you
will need to disable this feature.
contains a Universal Serial Bus
(USB) controller and you have a
USB keyboard.
When this field is Enabled, writes
from the CPU to the PCI bus are
buffered, to compensate for the
speed differences between the CPU
and the PCI bus. When Disabled,
the writes are not buffered and the
CPU must wait until the write is
complete before starting another
write cycle.
Default
Default
PCI Dynmic
Bursting
Disabled
Enabled
When Enabled, every write
transaction goes to the write buffer.
Burstable transactions then burst on
the PCI bus and nonburstable
transactions don’t.
70
Default
BIOS Setup UtilitySY-7VCA2
CHIPSET FEATURES SETUP (Continued)
CHIPSET
FEATURES
SettingDescriptionNote
PCI Master 0
WS Write
PCI Delay
Transaction
PCI#2 Access
#1 Retry
AGP Master 1
WS Write
AGP Master 1
WS Read
Disabled
EnabledWhen Enabled, writes to the PCI
bus are executed with zero wait
states.
Disabled
Enabled
Disabled
Enabled
DisabledDefault
EnabledWhen Enabled, writes to the
DisabledDefault
EnabledWhen Enabled, read to the AGP
The chipset has an embedded 32-bit
posted write buffer to support delay
transactions cycles. Select Enabled
to support compliance with PCI
specification version 2.1.
When disabled, PCI#2 will not be
disconnected until access finishes
(difault). When enabled, PCI#2 will
be disconnected if max retries are
attempted without success.
AGP(Accelerated Graphics Port) are
executed with one wait states.
(Accelerated Graphics Port) are
executed with one wait states.
Default
Default
Default
Memory
Parity/ECC
Check
DisabledDefault
EnabledThis item enabled to detect the
memory parity and Error Checking
& Correcting.
71
BIOS Setup UtilitySY-7VCA2
3-5 INTEGRATED PERIPHERALS
Caution: Change these settings only if you are already familiar
with the Chipset.
The [INTEGRATED PERIPHERALS] option changes the values of the
chipset registers. These registers control the system options in the computer.
The following screen shows setup default settings.
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
Integrated Peripherals
OnChip IDE Channel0Enabled
OnChip IDE Channel1Enabled
IDE Prefetch ModeEnabled
Primary Master PIOAuto
Primary Slave PIOAuto
Secondary Master PIOAuto
Secondary Slave PIOAuto
Primary Master UDMAAuto
Primary Slave UDMAAuto
Secondary Master UDMAAuto
Secondary Slave UDMAAuto
Init Display FirstPCI Slot
IDE HDD Block ModeEnabled
Onboard FDD ControllerEnabled
Onboard Serial Port 13F8/IRQ4
Onboard Serial Port 22F8/IRQ3
UART 2 ModeStandard
x IR Function DuplexHalf
x TX,RX inverting enableNo, Yes
Onboard Parallel Port378/IRQ7
Onboard Parallel ModeNormal
x ECP Mode Use DMA3
x Parallel Port EPP TypeEpp1.9
Onboard Legacy AudioEnabled
Sound BlasterDisabled
SB I/O Base Address220H
SB IRQ SelectIRQ 5
SB DMA SelectDMA 1
MPU-401Disabled
MPU-401 I/O Address330-333H
Game Port (200-207H)Enabled6
áâàß:MoveEnter:Select+/-/PU/PD:Value F10:SaveESC:ExitF1:General Help
The following tables describe each field in the INTEGRATED
PERIPHERALS Menu and provide instructions on how to configure the
IDE controls, FDC controls, and the onboard serial and parallel ports.
3-5.1 IDE Device Controls
IDE ControlsSettingDescriptionNote
On-Chip PCI IDE
Ø Primary
Ø Secondary
IDE
Ø Primary Master PIO
Ø Primary Slave PIO
Ø Secondary Master PIO
Ø Secondary Slave PIO
DisabledTurn off the on-board
IDE
EnabledUse the on-board IDEDefault
mode 0-40 is the slowest speed
4 is the fastest speed
AutoFor better performance
Default
and stability, we suggest
you use the Auto setting
to set the HDD control
timing.
Keyboard Controls Setting DescriptionNote
Init Display First
PCI SlotDefault
AGP
Choose which card – AGP
Display card or PCI VGA card –
to initialize first.
3-5.3 IDE HDD Block Mode
SettingDescriptionNote
IDE HDD Block Mode
Disabled
EnabledInvokes multi-sector
Default
transfer instead of one
sector per transfer. Not
all HDDs support this
function.
73
BIOS Setup UtilitySY-7VCA2
3-5.4 FDC Controls
FDC ControlsSettingDescriptionNote
Onboard FDD
controller
DisabledTurn off the on-board
floppy controller
EnabledUse the on-board floppy
controller
3-5.5 Onboard Serial Ports
Onboard Serial
Ports
Onboard
Serial Port 1 /
Serial Port 2
UART 2 Mode
If [UART Mode Select] is set to [IrDA]/[ASKIR]
IR Function
Duplex
SettingDescriptionNote
Disabled
3F8/IRQ4Default
2F8/IRQ3Default
3E8/IRQ4
2E8/IRQ3
Auto
StandardDefault
HPSIR
ASKIR
HalfDefault
Full
Choose serial port 1 & 2's I/O
address.
Do not set port 1 & 2 to the
same address except for
Disabled or Auto.
The second serial port offers
these InfraRed interface
modes.
Choose [Half] or [Duplex] to
set UR2 in half duplex mode
or full duplex mode
respectively. Refer to your IR
device specifications to select
the suitable mode.
Default
(port 1)
(port 2)
TX,RX inverting
enable
No,YesDefault
No, No/
Yes, No/
Yes, Yes.
This item allow you to enable
the TX, RX inverting which
depends on different H/W
requirement. This field is not
recommended to change its
default setting for avoiding
any error in your system
74
BIOS Setup UtilitySY-7VCA2
If [Parallel Port Mode] is set to [ECP] mode
If [Parallel Port Mode] is set to [EPP] mode
3-5.6 Onboard Parallel Ports
Onboard Parallel
Ports
SettingDescriptionNote
Onboard Parallel
Port
Parallel Port Mode
ECP Mode use
DMA
Parallel Port EPP
TYPE
Disabled
378/IRQ7Default
3BC/IRQ7
278/IRQ5
NormalDefault
EPP
ECP
ECP+EPP
3Choose DMA3Default
1Choose DMA1
EPP 1.9Select EPP port type 1.9
EPP 1.7Select EPP port type 1.7Default
Choose the printer I/O
address.
The mode depends on your
external device that
connects to this port.
3-5.7 Onboard Legacy Audio
This field controls the onboard legacy audio.
Setting DescriptionNote
Onboard
Legacy Audio
Disabled
Enabled
Set this item to Enabled if using
software (like DOS games) that needs
a ‘legacy’ audio device.
Default
Sound Blaster
SB I/O Base
Address
SB IRQ Select
SB DMA Select
DisabledDefault
Enabled
220HDefault
IRQ 5Default
DMA1Default
Set this item to enabled if your onboard audio-chip is sound Blaster
compatible.
Select the base address for your
sound Blaster (SB) compatible Audio
IC.
Select the IRQ your SB Audio IC
uses.
Select the DMA channel your SB
Audio IC uses.
75
BIOS Setup UtilitySY-7VCA2
Onboard Legacy Audio (Continued)
This field controls the onboard legacy audio.
SettingDescriptionNote
MPU-401
MPU-401 I/O
Address
Game Port
(200-207H)
DisabledDefault
Enabled
330-333HDefault
330-303H
310-313H
320-323H
Disabled
Enabled
Set this item to enabled to make use
of MIPI.
Select the I/O address for your MIDI
functionality.
Set this item to enabled to make use
of the game port.
Default
76
BIOS Setup UtilitySY-7VCA2
3-6 POWER MANAGEMENT SETUP
The [POWER MANAGEMENT SETUP] sets the system's power saving
functions.
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
Power Management Setup
Power ManagementPress EnterItem Help
ACPI Suspend TypeS1 (POS)
PM Control by APMYes
Video Off OptionSuspend -> Off
Video Off MethodV/H SYNC+Blank
MODE Use IRQ3
Soft-Off by PWRBTNInstant-Off
State After Power FailureOff
Wake Up EventsPress Enter
áâàß:MoveEnter:Select+/-/PU/PD:Value F10:SaveESC:ExitF1:General Help
After you have completed the Power Management Setup, press [Esc] to
return to the Main Menu.
3-6.1 Power Management Controls
Power
Management
Controls
SettingDescriptionNote
Power
Management
PM Control
by APM
Video Off
Option
Video Off
Method
Lets you define the HDD and
system power down times.
Doze
timer
Min Saving1 Hour1 Hour1 Hour15 Min
Max Saving1 Min1 Min1 Min1 Min
YesDefault
NO
Suspend -->
Off
Always On
All Modes -> Off
V/H
Sync+Blank
Blank screen
DPMS
When enabled, an Advanced
Power Management device will
be activated to enhance the Max.
Power Saving mode and stop the
CPU internal clock. If Advance
Power Management (APM) is
installed on your system,
selecting Yes gives better power
savings.
When enabled, this feature
allows the VGA adapter to
operate in a power saving mode.
Selects the method by which the
monitor is blanked.
Standby
timer
Suspend
timer
Default
HDD
power
down
Default
Default
78
BIOS Setup UtilitySY-7VCA2
Power Management Controls (Continued)
Power
Management
Controls
MODEM Use
IRQ
SettingDescriptionNote
3Default
Assigns an IRQ# to the modem
3-11, NA
device.
Soft-Off by
PWR-BTTN
State After
Power Failure
Wake Up
Events
Wake Up
Events
Instant-offDefault
Delay 4
Sec.
OnThe system will switch on when
OffThe system will remain off when
AutoThe system will return to the state
Press Enter Select items that will wake up your
SettingDescriptionNote
Turns off the system power 4
seconds after pushing the power
button.
power comes back after a power
failure.
Default
power comes back after a power
failure.
it was in before the power failure
when power returns. (i.e: If the
system was on, it will switch on
again, if it was off, it will remain
off)
system when in one of sleep
modes. Press enter to go the select
item page.
VGA
LPT & COM
OFFDefault
ONYou can set the VGA awakens the
system.
LPT/COM
NONE,
LPT,
COM
When On of LPT & COM, any
activity from one of the listed
system peripheral devices or IRQs
wakes up the system.
79
Default
BIOS Setup UtilitySY-7VCA2
Wake Up
Events
HDD & FDD
PCI Master
PowerOn by
PCI Card
Modem Ring
Resume
Resume by
Alarm
SettingDescriptionNote
OFFDefault
ON
OFF
ON
Disabled
Enabled
Disabled
Enabled
DisabledThe system ignores the alarm.Default
EnabledSet alarm to power on the system by
When On of HDD & FDD, any
activity from one of the listed
system peripheral devices wakes up
the system.
When On of PCI Master, any
activity from one of the listed
system peripheral devices wakes up
the system
If enabled any PCI interrupt will
wake up the system.
An input signal on the serial Ring
Indicator (RI) line (in other words,
an incoming call on the modem)
awakens the system from a soft off
state.
the date (1-31) or time (hh:mm:ss).
If the date is set to [0], the system
will self-power on by alarm
everyday at the set time.
Default
Default
Default
Primary INTR
IRQs Activity
Monitoring
(Press Enter)
ONDefault
OFF
PrimaryIRQ3(COM2), IRQ4(COM1),
Secondary IRQ9(IRQ2 Redir),
DisabledIRQ8 (RTC Alarm), IRQ15
When set to On, any event occurring
at will awaken a system which has
been powered down.
Note: Starred (*) items will disappear when the [Resources
Controlled By] option is set to [Auto].
After you have completed the PCI Slot Configuration, press [Esc] and
follow the instructions on your screen to save your settings or exit without
saving.
81
BIOS Setup UtilitySY-7VCA2
3-7.1 PNP/PCI Configuration Controls
PNP/PCI
Controls
SettingDescriptionNote
PnP OS
Installed
YesSet this field to [Yes] if you
are running Windows 95,
which is PnP compatible.
Reset
Configuration
Data
NoIf the OS you are running
does not support PnP
configuration.
Disabled Retain PnP configuration
data in BIOS.
EnabledReset PnP configuration data
Default
(If there is any
doubt, set this
field to [No])
Default
in BIOS.
Resources
Controlled By
ManualBIOS does not manage PCI/ISA PnP
card IRQ assignment.
Requires to assign IRQ-# and DMA-# to PCI or
ISA PnP manually.
IRQ-3,4,5,7,9,10,11,12,14,15 assigned to: _
DMA-0,1,3,5,6,7 assigned to: _
Auto
(ESCD)
The Plug-and-Play BIOS
auto manages PCI/ISA PnP
Recommended
card IRQ assignment
automatically.
If [Resources Controlled By] is set to [Manual]
IRQ-# and
DMA-#
assigned to:
PCI/ISA PnP Choose IRQ-# and
DMA-# assigned to
PCI/ISA PnP card.
Legacy ISAChoose IRQ-# and
DMA-# assigned to
Legacy ISA card.
Under this item the user can assign an IRQ to a PCI slot. However, there under
some conditions the IRQ will not be assigned as selected under this item:
1. IRQs 0, 1, 2, 6, 8, 13 can NOT be assigned, because they are fixed.
2. IRQs 5, 9, 10, 11 are available
3. IRQs 3,4,7,12,14 and 15 will only be assigned if they are free. See the table
below on how to free them:
IRQ-3,4,5,7,9,10,
11,12,14,15
DMA-0,1,3,5,6,7
IRQ-3,4,5,7,9,10,
11,12,14,15
DMA-0,1,3,5,6,7
82
BIOS Setup UtilitySY-7VCA2
PNP/PCI Configuration Setup (Continued)
PNP/PCI
Setup
Interrupt
Line
IRQ 15 IRQ 15: PCI / ISA PnP On-Chip Secondary PCI IDE: disabled
IRQ 14 IRQ 14: PCI / ISA PnP On-Chip Primary PCI IDE: disabled
IRQ 12 IRQ 12: PCI / ISA PnP
IRQ 7IRQ 7: PCI / ISA PnP Onboard parallel port: disabled
IRQ 4IRQ 4: PCI / ISA PnP Onboard Serial port 1: disabled
IRQ 3IRQ 3: PCI / ISA PnP Onboard Serial port 2: disabled
4. Your OS may reassign another interrupt to a PCI slot after BIOS passes control
to the OS, especially if you use Windows 95, 98 or NT.
SettingDescriptionNote
How to set the BIOS to release the IRQ to the PnP Interrupt pool:
PnP / PCI configurationIntegrated Peripherals
Interrupt 12 will be released by the PnP
BIOS automatically if the PS/2 Mouse Port
is not used.
Assign IRQ
For
VGA/USB
Disabled BIOS will assign IRQ for
VGA/USB port.
EnabledBIOS won’t assign IRQ for
Default
VGA/USB port.
5. Your OS may reassign another interrupt to a PCI slot after BIOS passes control
to the OS, especially if you use Windows 95, 98 or NT.
AutoDefaultINT Pin
1/2/3/4
Set to Auto the BIOS will
using IRQs Automatically.
Assignment
83
BIOS Setup UtilitySY-7VCA2
3-7.2 MULTI I/O ADDRESSES
Default settings for multi-I/O addresses are as follows:
PortI/O AddressIRQStatus
LPT1
COM1
COM2
378H7ECP/EPP
3F8H4
2F8H3
Warning: If a default I/O address conflicts with other I/O cards
such as sound card, you must change one of the I/O addresses to
remedy to this address conflict. (I/O addresses can be adjusted from
the BIOS Setup Utility)
3-8 PC HEALTH STATUS
This option sets the Motherboard's PC Health Status.
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
PC Health Status
Current CPU Temp. 25 º C / 77 º F
Current System Temp.40 º C / 104 º F
Current CPUFAN Speed5192 RPM
Current CHAFAN Speed0 RPM
Vcore2.02 V
2.5V2.50 V
3.3V3.31 V
5V4.97 V
12V11.70 V
Menu Level 4
Item Help
áâàß:MoveEnter:Select+/-/PU/PD:Value F10:SaveESC:ExitF1:General Help
Note: Starred (*) items will disappear when the [Resources
Controlled By] option is set to [Auto].
84
BIOS Setup UtilitySY-7VCA2
3-8.1 CPU Device Monitoring
CPU Device
Monitoring
SettingDescriptionNote
Current CPU
Temp.
Current System
Temp.
Current
CPUFAN Speed
Current
CHSFAN Speed
Vcore, 2.5V,
3.3V, +5V, +12V
°C/°F
°C/°F
°C/°F
°C/°F
V
Show the current status of CPU
temperature.
Show the current status of the
system temperature.
Show the current status of CPU
Fan
Show the current status of the
chassis Fan
Show the current voltage status.
85
BIOS Setup UtilitySY-7VCA2
3-9 LOAD FAIL-SAFE DEFAULTS
Select the [Load Fail-Safe Defaults] option from the Main Menu to load
the system values you have previously saved. This option is recommended
if you need to reset the system setup and to retrieve the old values.
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
4Soyo Combo Feature4PC Health Status
4Standard CMOS FeaturesLoad Fail - Safe Defaults
4Advanced BIOS FeaturesLoad Optimized Defaults
4Advanced Chipset FeaturesSet Supervisor Password
4Integrated PeripheralsSet User Password
4Power Management SetupSave & Exit Setup
4PnP/PCI ConfigurationsExit Without Saving
Type [Y] to use the Setup Defaults followed by [Enter]or otherwise [N] to
return to the Main Menu and keep current values.
Warning: If you run into any problem after changing the BIOS
configuration, please load the SETUP DEFAULTS for stable
performance.
86
BIOS Setup UtilitySY-7VCA2
3-10 LOAD OPTIMIZED DEFAULTS
Select the [Load Optimized Defaults] option from the Main Menu to load
the system values you have previously saved. This option is recommended
if you need to reset the system setup and to retrieve the old values.
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
4Soyo Combo Feature4PC Health Status
4Standard CMOS FeaturesLoad Fail - Safe Defaults
4Advanced BIOS FeaturesLoad Optimized Defaults
4Advanced Chipset FeaturesSet Supervisor Password
4Integrated PeripheralsSet User Password
4Power Management SetupSave & Exit Setup
4PnP/PCI ConfigurationsExit Without Saving
Type [Y] to use the Setup Defaults followed by [Enter]or otherwise [N] to
return to the Main Menu and keep current values.
Warning: If you run into any problem after changing the BIOS
configuration, please load the SETUP DEFAULTS for stable
performance.
87
BIOS Setup UtilitySY-7VCA2
3-11 SUPERVISOR PASSWORD
Based on the setting you have made in the [Security Option] of the [BIOS
FEATURES SETUP] section, the password prevents access to the system
or the setup program by unauthorized users. Follow this procedure to set a
new password or disable the password:
1. Choose [BIOS FEATURES SETUP] in the Main Menu and press
[Enter]. Select the [Security Options] item and set the field to:
a. [System]: The password is required every time the system is
booted. This means only a person who knows the password can
use this computer.
b. [Setup]: The password is required only when you attempt to
enter the BIOS Setup program.
2. Choose [SUPERVISOR PASSWORD] from the Main Menu and
press [Enter]. The following prompt appear:
Enter Password:
Warning: If you forget or lose the password, the only way to
access the system is to set jumper JP5 to clear the CMOS RAM.
All setup information is lost and you must run the BIOS setup
program again.
Note: If you do not wish to use the password function, press
[Enter] directly and the following message appears:
Password Disabled!!
88
BIOS Setup UtilitySY-7VCA2
F10
(Shift) F2
↔
Type the PasswordPress:
password, press
to exit
Type the Password
Press <Enter> without
After you confirm the password,
3. Enter your new password and press [Enter]. The following message
appears, prompting to confirm the new password:
Confirm Password:
4. Re-enter your password and then press [Enter] to exit to the Main
Menu.
This diagram outlines the password selection procedure:
and Press: <Enter>
↔
STANDARD CMOS SETUP
BIOS FEATURES SETUP
CHIPSET FEATURES SETUP
Enter Password:
POWER MANAGEMENT SETUPPNP/PCI CONFIGURATION
Confirm Password:
LOAD SETUP DEFAULTSLOAD BIOS DEFAULTS
Esc
: Quit
: Save & Exit Setup
CMOS SETUP UTILITY
AWARD SOFTWARE, INC.
Enter Password:
∗∗∗∗∗
∗∗∗∗∗
After you confirm the
press <Esc> to exit
Time, Date, Hard Disk Type…
ROM PCI/ISA BIOS
Press:
entering the password
Without entering password
INTEGRATED PERIPHERALS
SUPERVISOR PASSWORD
USER PASSWORD
Password Disabled!!
IDE HDD AUTO DETECTION
SAVE & EXIT SETUP
EXIT WITHOUT SAVING
↑↓→←
°
: Select Item
: Change Color
3-12 USER PASSWORD
When the user password option is on, you are not allowed to change any
setting in the [CMOS SETUP UTILITY] except for changing the user's
password.
The password setting procedure is similar to that for the [SUPERVISOR
PASSWORD] (Refer to section 3-9).
89
BIOS Setup UtilitySY-7VCA2
3-13 IDE HDD AUTO DETECTION
This Main Menu function automatically detects the hard disk type and
configures the [Standard CMOS Features] accordingly.
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software
IDE Primary Master
IDE HDD Auto-DetectionPress Enter
IDE Primary MasterAuto
Capacity0 MB
Access ModeAuto
0
Cylinder0
Head0
Precomp0
Landing Zone0
Sector0
áâàß:MoveEnter:Select+/-/PU/PD:Value F10:SaveESC:ExitF1:General Help
Note: This function is only valid for IDE type of hard disk drives.
90
Drivers installationSY-7VCA2
Chapter 4
DRIVERS INSTALLATION
Your SY-7VCA2 Motherboard comes with a CD-ROM labeled "SOYO
CD." The SOYO CD contains the user's manual file for your new
Motherboard, the drivers software available for installation, and a database
in HTML format with information on SOYO Motherboards and other
products.
Step 1. Insert the SOYO CD into the CD-ROM drive
The SOYO CD will auto-run, and the SOYO CD Start Up Menu will be as
shown.
If you use Windows NT, the SOYO-CD will not detect your motherboard
type. In that case the following dialog will pop up, please choose your
motherboard and press OK. Now the SOYO-CD Start Up Menu will be
shown.
Please Select Your Board
7IWA-F
7IWA-F V1.0
6IWM/L
6IWM
6IWA
OK
(SOYO CD Start Up Program Menu)
91
X
LI-7000
7IWB
7IWB V1.0
7IWM
7IWM/L V1
Cancel
Drivers installationSY-7VCA2
If you use Windows 95 or 98, the SOYO CD Start Up Program
automatically detects which SOYO Motherboard you own and displays the
corresponding model name.
The user's manual files included on the SOYO CD are in PDF (Postscript
Document) format. In order to read a PDF file, the appropriate Acrobat
Reader software must be installed in your system.
Note: The Start Up program automatically detects if the Acrobat Reader
utility is already present in your system, and otherwise prompts you on
whether or not you want to install it. You must install the Acrobat Reader
utility to be able to read the user's manual file. Follow the instructions on
your screen during installation, then once the installation is completed,
restart your system and re-run the SOYO CD.
92
Drivers installationSY-7VCA2
Step 2. Install Drivers and Utilities
Click the Install Drivers button to display the list of drivers software that
can be installed with your Motherboard. The Start Up program displays
the drivers available for the particular model of Motherboard you own. We
recommend that you only install those drivers.
driverrevision:
VIA 4 in 1 driver package for Win 9x/NT
VIA Ac97 Codec Driver for Win 9x/NT/2000
VIA hardware monitor for (Win 95/98)
Cancel
OK
(Driver Installation Menu)
A short description of all available drivers follows:
Ø VIA 4in1 driver package
The 4 in 1 driver package includes all drivers your motherboard needs.
After selecting this driver package, one driver will be installed
automatically (the IRQ remapping utility), the other three are installed if
selected. By default all three drivers are selected. A description of the 4
drivers follows:
Bus Master PCI IDE Driver
This driver will speed up the data-transfer rate to and from the
harddisk.
AGP VxD Driver
This driver must be installed in order to be able to make use of the
on-board AGP Video functionality.
93
Drivers installationSY-7VCA2
VIA Chipset Functions Registry
This driver will make the necessary changes to the Windows
registry, in order to make sure that Windows has no problems
recognizing your VIA chipset.
IRQ remapping utility (This driver is installed automatically)
This utility will remap the IRQ lines to make sure that everything
functions properly under Windows.
Ø VIA Ac97 Codec Driver for Win 9x/NT/2000
You have to install the drivers before installing any application for the
Ac97 codec.
Ø VIA hardware monitor for (Win 95/98)
Your motherboard comes with a hardware monitoring IC. By installing
this utility Temperature, Fan speed and Voltages can be monitored. It is
also possible to set alarms when current system values exceed or fall
below pre-set values.
Step 3. Select which driver you want to install and click OK
Notice 1: Once you have selected a driver, the system will automatically exit
the SOYO CD to begin the driver installation program. When the
installation is complete, most drivers require to restart your system
before they can become active.
Notice 2:You may click Cancel to abort the driver installation and return to
the main menu.
Step 4. Check the Latest Releases
Click the 'Check the latest Releases' button to go the SOYO Website to
automatically find the latest BIOS, manual and driver releases for your
motherboard. This button will only work if your computer is connected to
the internet through a network or modem connection. Make sure to get
your modem connection up before clicking this button.
94
95
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