SOYO Computer Hardware SY 7VCA2 User Manual
SY-7VCA2  
Motherboard  
****************************************************  
VIA Cyrix III, Intel Pentium® III & CeleronÔ  
Processor supported  
Via 694X AGP/PCI/AMR Motherboard  
66/100/133 MHz Front Side Bus supported  
ATX Form Factor  
****************************************************  
User's Manual  
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Table of Contents  
SY-7VCA2  
Table of Contents  
CHAPTER 1 MOTHERBOARD DESCRIPTION .............................1  
1-1  
1-2  
1-3  
1-4  
1-5  
1-6  
1-7  
1-8  
1-9  
1-10  
1-11  
1-12  
INTRODUCTION...........................................................1  
KEY FEATURES ............................................................1  
HANDLING THE MOTHERBOARD .............................5  
ELECTROSTATIC DISCHARGE PRECAUTIONS ........5  
SY-7VCA2 MOTHERBOARD LAYOUT .......................6  
SY-7VCA2 MOTHERBOARD COMPONENTS.............7  
MICROPROCESSOR......................................................9  
SY-7VCA2 MOTHERBOARD COMPONENTS...........10  
MICROPROCESSOR....................................................12  
I/O INTERFACE CONTROLLER .................................16  
HARDWARE MONITOR..............................................18  
WAKE ON LAN TECHNOLOGY.................................19  
CHAPTER 2 HARDWARE INSTALLATION..................................20  
2-1  
2-2  
2-3  
PREPARATIONS ..........................................................20  
UNPACKING THE MOTHERBOARD .........................21  
INSTALLATION GUIDE..............................................22  
2-3.1  
CPU Fan Installation.................................................. 23  
SDRAM Memory Module Installation......................... 26  
Motherboard Connector.............................................. 28  
CMOS Clearing (JP5)................................................. 43  
Power On ................................................................... 43  
Quick BIOS Setup....................................................... 44  
Troubleshooting at First Start ..................................... 46  
Power Off................................................................... 49  
2-3.2  
2-3.3  
3-3.4  
2-3.5  
2-3.6  
2-3.7  
2-3.8  
CHAPTER 3 BIOS SETUP UTILITY ..............................................52  
3-1  
3-2  
SOYO COMBO SETUP.................................................55  
STANDARD CMOS SETUP..........................................60  
iii  
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Table of Contents  
SY-7VCA2  
3-3  
3-4  
3-5  
3-6  
3-7  
3-8  
3-9  
3-10  
3-11  
3-12  
3-13  
ADVANCED BIOS FEATURES.....................................63  
ADVANCED CHIPSET FEATURES..............................67  
INTEGRATED PERIPHERALS.....................................72  
POWER MANAGEMENT SETUP ................................77  
PNP/PCI CONFIGURATION SETUP.............................81  
PC HEALTH STATUS....................................................84  
LOAD FAIL-SAFE DEFAULTS.....................................86  
LOAD OPTIMIZED DEFAULTS...................................87  
SUPERVISOR PASSWORD...........................................88  
USER PASSWORD........................................................89  
IDE HDD AUTO DETECTION .....................................90  
CHAPTER 4 DRIVERS INSTALLATION ........................................91  
iv  
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Motherboard Description  
SY-7VCA2  
Chapter 1  
MOTHERBOARD DESCRIPTION  
1-1 INTRODUCTION  
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
n
n
FSB 66MHz: CeleronÔ (400-700MHz)  
FSB 100MHz: Pentium ® III (500-850MHz)  
FSB 133MHz: Pentium ® III (533MHz-1.13GHz)  
Supports Via Cyrix processors  
n
n
FSB 100MHz: Cyrix III (500MHz-600MHz)  
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
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Motherboard Description  
CPU Multiplier  
The SY-7VCA2 supports a wide range of multipliers:  
SY-7VCA2  
n
2.0x, 2.5x, 3.0x, 3.5x, 4.0x, 4.5x, 5.0x, 5.5x, 6.0x, 6.5x, 7.0x, 7.5x and  
8.0x  
Ø
EXPANDABILITY  
The SY-7VCA2 provides all the standard expansion slots, and many more  
additional expansion features:  
u
Expansion slots  
n
n
n
1 x 32-bit bus master AGP slot  
5 x 32-bit bus master PCI slots  
1 x 16-bit ISA slots  
u
Enhanced IO  
n
n
Floppy disk controller  
2x EIDE controllers with support for up to 4 Ultra DMA 33/66  
/100 devices  
n
n
n
n
n
n
Standard/EPP/ECP parallel port  
2x 16550 compatible serial ports  
IrDA compatible infrared port  
4x USB (Universal Serial Bus) connectors  
PS/2 mouse connector  
PS/2 keyboard connector  
2
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Motherboard Description  
SY-7VCA2  
Ø
ADVANCED FUNCTIONS  
The SY-7VCA2 supports advanced functions such as:  
Wake-On-LAN  
n
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.  
Power on by modem or alarm  
n
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
Ø
SOYO Bonus Pack CD-ROM  
COMPLIANCE  
The SY-7VCA2 complies with all important industry standards. The  
3
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Motherboard Description  
SY-7VCA2  
following underlines the reliability of the SY-7VCA2, a motherboard to  
trust.  
n
PC99, ACPI compliant  
Ø
USER FRIENDLY  
n
n
n
SOYO Combo Setup  
Jumperless design  
You can set up the following options trough the BIOS setting  
¾
¾
¾
¾
¾
¾
CPU FSB frequency  
CPU multiplier  
CPU Vcore voltage  
PCI clock  
AGP Clock  
SDRAM Clock  
4
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Motherboard Description  
SY-7VCA2  
1-3 HANDLING THE MOTHERBOARD  
To avoid damage to your Motherboard, follow these simple rules while  
unpacking:  
Ø
Ø
Ø
Before handling the Motherboard, ground yourself by grasping an  
unpainted portion of the system's metal chassis.  
Remove the Motherboard from its anti-static packaging. Hold the  
Motherboard by the edges and avoid touching its components.  
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
Ø
Do not remove the anti-static packaging until you are ready to install.  
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.)  
Frequently ground yourself while working or use a grounding strap.  
Handle the Motherboard by its edges and avoid touching its  
components.  
Ø
Ø
5
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Motherboard Description  
SY-7VCA2  
1-5 SY-7VCA2 MOTHERBOARD LAYOUT  
PS/2 KB  
Connector  
PS/2 Mouse  
Connector  
USB 1  
COM1  
Socket 370  
PRT  
ATX Power  
1
3
CPUFAN  
COM2  
VT82C694X  
GAME  
AUDIO-OUT  
LINE-IN  
MIC-IN  
1
1
IDE 1 IDE 2  
AGP Slot  
CODEC  
AC97  
PCI Slot #1  
3
1
JP5  
PCI Slot #2  
PCI Slot #3  
PCI Slot #4  
1
4
1
4
CDIN1  
Via  
CDIN2  
VT82C686B  
JP10  
3
1
D1 D3  
SIRCON  
D2  
D8  
5
1
AMR  
3V  
Lithium  
Battery  
2
1
FDC1  
6
1
10  
PCI Slot #5  
USB2  
5
Power  
LED  
1
3
Speaker  
ISA Slot  
_
_
+
CHAFAN  
_
_
Reset PWRBT STR HDD  
LED  
LED  
Back Panel  
SY-7VCA2 Platform  
6
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Motherboard Description  
SY-7VCA2  
1-6 SY-7VCA2 MOTHERBOARD COMPONENTS  
A
B
C D  
E
W
F
®
V
U
G
H
T
I
S
R
Q
P
J
K
O
N
M
L
7
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Motherboard Description  
SY-7VCA2  
A
B
C
D
E
F
Socket 370 Connector  
CPU Cooling Fan Connector  
Via 694X North Bridge chip  
ATX Power Supply Connector  
DIMM Banks  
Bus Mastering e-IDE/ATAPI Ports  
CMOS Clear Jumper  
Via 686B South Bridge Chip  
Flash BIOS  
G
H
I
J
USB Ports  
K
L
M
N
O
P
Chassis Cooling Fan  
Front panel connectors  
Serial Infrared (IrDA) Device Header  
Floppy Disk Drive (FDD) Port  
16-bit ISA Slot  
3V Lithium Battery  
Q
R
S
Audio Modem Riser Slot  
Wake-On-LAN (WOL) Header  
32-bit PCI Mastering Slots  
CD-IN Connectors  
T
U
V
W
X
AC97 Codec Chip  
32-bit AGP Slot  
Back panel Connectors  
Debug LEDs  
8
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Motherboard Description  
SY-7VCA2  
1-7 MICROPROCESSOR  
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
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Motherboard Description  
SY-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:  
¾
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  
¾
¾
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  
¾
¾
Supports FP,EDO, SDRAM, ESDRAM and VCM SDRAM  
memory types  
¾
¾
¾
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.  
¾
¾
Mixed 1M/2M/4M/8M/16M/32MxN DRAMs  
The 7VCA2 supports 3 DIMMs or 6 banks at 133MHz for 1.5GB  
max memory.  
¾
¾
¾
¾
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  
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Motherboard Description  
SY-7VCA2  
¾
¾
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  
¾
¾
¾
¾
Seamless DRAM command scheduling for maximum DRAM bus  
utilization (e.g., precharge other banks while accessing the current  
bank)  
¾
¾
¾
¾
¾
¾
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  
¾
¾
¾
¾
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  
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Motherboard Description  
SY-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  
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Motherboard Description  
SY-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-Read-  
Multiple 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 write-  
back 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  
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SY-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 PC99-  
compliant 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  
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Motherboard Description  
SY-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.  
8)Integrated PCI-mastering dual full-duplex direct-sound AC97-link-  
compatible sound system. Hardware soundblaster-pro and hardware-  
assisted 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  
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Motherboard Description  
SY-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 PCI-  
to 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  
¾
¾
¾
¾
¾
¾
Plug and play with 96 base IO address and 12 IRQ options  
One dedicated IR port  
Ø
¾
¾
Third serial port dedicated to IR function  
IR function either through the two complete serial ports or the  
third dedicated port  
¾
Infrared-IrDA (HPSIR) and ASK (Amplitude Shift Keyed) IR  
Multi-mode parallel port  
Ø
Ø
¾
¾
Standard mode, ECP and EPP support  
Plug and play with 192 base IO address, 12 IRQ and 4 DMA  
options  
Floppy Disk Controller  
¾
16bytes of FIFO  
16  
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Motherboard Description  
SY-7VCA2  
¾
¾
¾
¾
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 D-  
Sub connector located on the back panel of the motherboard. In the Setup  
program, there are four options for parallel port operation:  
l
l
l
Compatible (standard mode)  
Bi-directional (PS/2 compatible)  
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
l
l
l
l
l
360 KB, 5.25-inch  
1.2 MB, 5.25-inch  
720 KB, 3.5-inch  
1.2 MB. 3.5-inch (driver required)  
1.25-1.44 MB, 3.5-inch  
2.88 MB, 3.5-inch  
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SY-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  
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SY-7VCA2  
subsystem include:  
Ø
Ø
Ø
An integrated ambient temperature sensor  
Fan speed sensors, which monitor the fan 1 and fan 2 connector.  
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.  
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Hardware Installation  
SY-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 anti-  
static 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.  
3.  
4.  
5.  
6.  
7.  
8.  
9.  
10.  
DIMM memory module (s)  
Computer case and chassis with adequate power supply unit  
Monitor  
PS/2 Keyboard  
Pointing Device (PS/2 mouse)  
Speaker(s) (optional)  
Disk Drives: HDD, CD-ROM, Floppy drive …  
External Peripherals: Printer, Plotter, and Modem (optional)  
Internal Peripherals: Modem and LAN cards (optional)  
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2-2 UNPACKING THE MOTHERBOARD  
When unpacking the Motherboard, check for the following items:  
u
The SY-7VCA2 VT82C694X AGP/PCI Motherboard  
u
u
u
u
u
The Quick Start Guide  
The Installation CD-ROM  
SOYO Bonus Pack CD-ROM  
One IDE Device ATA 66 Flat Cable  
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.  
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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  
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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: Record the working frequency of  
your CPU that should be clearly marked on the CPU cover.  
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)  
550MHz (100 x 5.5)  
600MHz (100 x 6.0)  
650MHz (100 x 6.5)  
700MHz (100 x 7.0)  
750MHz (100 x7.5)  
800MHz (100 x 8.0)  
850MHz (100 x 8.5)  
FSB 133MHz  
533MHz(133x4.0) 667MHz(133x5.0) 800MHz(133x 6.0)  
933MHz(133x 7.0) 1.13GHz(133x 8.5)  
600MHz(133x4.5) 733MHz(133x5.5) 866MHz(133x 6.5) 1000MHz(133x 7.5)  
CPU Mount Procedure: To mount the Pentium® & CeleronTM  
processor & VIA Cyrix processor that you have purchased separately, follow  
these instructions.  
1. Lift the socket handle up to a vertical position.  
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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.  
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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.  
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2-3.2 SDRAM Memory Module Installation  
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.  
84  
1
1
84  
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Memory Configuration Table  
Number of Memory  
DIMM 1  
DIMM 2  
DIMM 3  
Modules  
RAM Type  
SDRAM  
Memory Module Size  
(MB)  
8/16/32/64/128/256/512 MB  
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2-3.3 Motherboard Connector  
2-3.3.1 IDE Device Installation (HDD, CD-ROM)  
Pin -1  
IDE 1 IDE 2  
Primary  
IDE  
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.  
80-Conductor  
ATA 66/100  
Flat Cable  
40-pin  
1
1
39  
39  
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2-3.3.2Floppy 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
33  
33  
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2-3.3.3 Front Panel Connections  
Power  
LED  
Speaker  
_
+
_
+
_
_
+
+
Reset PWRBT  
STRHDD  
LED LED  
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.  
Power LED  
Pin Assignment  
_
+
+5V  
NC  
GND  
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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.  
Reset Pin Assignment  
1
Power Good  
GND  
3. Speaker  
Attach the 4-pin PC speaker cable from the case to the Speaker header on  
the Motherboard.  
Speaker Pin Assignment  
_
+
Speaker out  
+5V  
NC NC  
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.  
HDD LED Pin Assignment  
_
+
LED Anode LED Cathode  
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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.  
PWRBT Pin Assignment  
1
Power On/Off  
GND  
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 Operation  
ON ON  
Power Off  
OFF  
STR LED  
STR LED Pin Assignment  
_
+
LED Cathode  
LED Anode  
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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.  
PS/2 KB  
PS/2 Mouse  
Connector  
Connector  
USB2  
PRT  
USB 1  
COM 1  
COM2  
JOYSTICK  
LINE-OUT  
LINE-IN  
MIC JACK  
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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.  
Pin5  
KBD Clock  
Pin6  
NC  
Pin4  
VCC  
Pin3  
GND  
Pin1  
KBD DATA  
Pin2  
NC  
4. PS/2 Mouse  
Similarly, plug the mouse jack directly into the 6-pin female PS/2 mouse  
connector.  
Pin5  
Mouse Clock  
Pin6  
NC  
Pin4  
Pin3  
VCC  
GND  
Pin1  
Mouse DATA  
Pin2  
NC  
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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:  
USB2  
USB2  
5
4
3
2
1
10  
9
GND  
GND  
None  
GND  
(+)Data  
(+)Data  
8
(-)Data  
Power  
(-)Data  
Power  
7
6
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.  
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2-3.3.5 Other Connections  
1. Wake-On-LAN (WOL)  
Attach the 3-pin connector from the LAN card which supports the Wake-  
On-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  
MP-Wake-up  
5VSB GND  
1 2  
3
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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:  
Serial Infrared (IR1) Connector  
IR1 Pin Assignment  
3
5
1 2  
4
VCC  
IRTX  
IRRX  
GND  
3. Other Display Cards  
Insert other types of VGA cards into the PCI or ISA expansion slots  
according to card specifications.  
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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:  
CPU Cooling Fan  
CPUFAN Pin Assignment  
3
1
2
GND  
12V  
SENSOR  
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(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  
3
1 2  
12V  
GND  
SENSOR  
Note: CPUFAN must be installed for this Motherboard, CHAFAN is  
optional.  
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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(CD Line-in)  
Pin Assigment  
CDIN2  
4
3
2
1
GND  
GND  
Right  
Left  
GND  
Left  
Right  
CDIN1  
GND  
4
3
2
1
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.  
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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.  
ATX Power  
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).  
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Please install the ATX power according to the following pin assignment:  
ATX Power  
12V  
5VSB  
PW-OK  
GND  
5V  
5V  
5V  
-5V  
GND  
GND  
GND  
PS-ON  
GND  
-12V  
3.3V  
Ø
Pay special care to the directionality.  
GND  
5V  
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.  
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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  
Clear CMOS Data  
Retain CMOS Data  
Short pin 2-3 for  
at least 5 seconds to  
clear the CMOS  
Short pin 1-2  
to retain new  
settings  
JP5 Setting  
1 2 3  
1 2 3  
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.  
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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 Feature  
4PC Health Status  
4Standard CMOS Features  
4Advanced BIOS Features  
4Advanced Chipset Features  
4Integrated Peripherals  
Load Optimized Defaults  
Load Fail - Safe Defaults  
Set Supervisor Password  
Set User Password  
4Power Management Setup  
4PnP/PCI Configurations  
Save & Exit Setup  
Exit Without Saving  
Esc : Quit  
áâàß  
:
Select Item  
F10 : Save & Exit Setup  
Change CPU’ s Clock & Voltage  
2-3.6 Quick BIOS 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]. 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.  
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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)  
Manual  
667MHz (66 x 10.0)  
700MHz (66 x 10.5)  
500MHz (100 x 5.0)  
550MHz (100 x 5.5)  
600MHz (100 x 6.0)  
650MHz (100 x 6.5)  
700MHz (100 x 7.0)  
750MHz (100 x 7.5)  
800MHz (100 x 8.0)  
850MHz (100 x 8.5)  
600MHz (133 x 4.5)  
666MHz (133 x 5.0)  
733MHz (133 x 5.5)  
800MHz (133 x 6.0)  
866MHz (133 x 6.5)  
933MHz (133 x 7.0)  
1000MHz (133 x 7.5)  
1.13GHz (133 x 8.5)  
400MHz (66 x 6.0)  
433MHz (66 x 6.5)  
466MHz (66 x 7.0)  
500MHz (66 x 7.5)  
533MHz (66 x 8.0)  
566MHz (66 x 8.5)  
600MHz (66 x 9.0)  
633MHz (66 x 9.5)  
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,  
CeleronÔ 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  
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Hardware Installation  
SY-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.  
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Hardware Installation  
SY-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  
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Hardware Installation  
SY-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  
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Hardware Installation  
SY-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  
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Hardware Installation  
SY-7VCA2  
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.  
Code  
Explanation  
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.  
L
X
X
X
D8 D3 D2 D1  
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  
save space. At boot-up this code is decompressed and stored to RAM for faster  
execution.  
X
X
L
X
D8 D3 D2 D1  
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.  
X
X
L
L
D8 D3 D2 D1  
The chipset (North-Bridge and South-Bridge) registers are set to the values  
selected by the user.  
X
L
X
X
D8 D3 D2 D1  
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.  
X
L
X
L
D8 D3 D2 D1  
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.  
X
L
L
X
D8 D3 D2 D1  
If the VGA card does not work or is not inserted at all, the system will display  
this code for a short period of time.  
X
L
L
L
D8 D3 D2 D1  
At this point the BIOS is initializing the CPU. The L2 cache latency values are  
set, and more important, the CPU micro-code is written into the CPU.  
L
X
X
X
D8 D3 D2 D1  
Now the system is testing the RAM inserted on the board. The screen will  
show the BIOS testing the RAM by a running counter. After finishing the test,  
the screen will show the amount of RAM in your system.  
L
X
X
L
D8 D3 D2 D1  
The super I/O registers are set to the default values. This includes the serial,  
parallel and IR etc settings.  
L
X
L
X
D8 D3 D2 D1  
At this point the IDE busses (primary and secondary) are scanned for devices.  
This includes HD drives and ATAPI CD-ROM drives that are connected to the  
IDE bus. After scanning the detected devices are displayed on screen.  
L
X
L
L
D8 D3 D2 D1  
The serial and parallel port registers are set to the values selected by the user.  
L
L
X
X
D8 D3 D2 D1  
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.  
L
L
X
L
D8 D3 D2 D1  
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.  
L
L
L
X
D8 D3 D2 D1  
At this point the BIOS passes control to the Operating System (OS). All LEDs  
will be on and will stay on to indicate a successful boot.  
L
L
L
L
D8 D3 D2 D1  
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Hardware Installation  
SY-7VCA2  
You are now ready to configure your system with the BIOS setup program.  
Go to Chapter 3: BIOS SETUP  
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BIOS Setup Utility  
SY-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 Feature  
4PC Health Status  
4Standard CMOS Features  
4Advanced BIOS Features  
4Advanced Chipset Features  
4Integrated Peripherals  
Load Fail - Safe Defaults  
Load Optimized Defaults  
Set Supervisor Password  
Set User Password  
4Power Management Setup  
4PnP/PCI Configurations  
Save & Exit Setup  
Exit Without Saving  
Esc : Quit  
áâàß  
:
Select Item  
F10 : Save & Exit Setup  
Change CPU’ s Clock & Voltage  
Selecting items  
l
l
Use the arrow keys to move between items and select fields.  
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  
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BIOS Setup Utility  
SY-7VCA2  
Hot Keys: Function keys give you access to a group of commands  
throughout the BIOS utility.  
Function Command  
Description  
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  
F1  
F5  
F6  
General Help  
Previous  
Values  
Load Fail-  
Safe Defaults values.  
Load  
F7  
Optimized  
Defaults  
Save  
Loads all options with the optimize values.  
F10  
Saves your changes and reboots the system.  
Returns at anytime and from any location to  
the Main Menu.  
[Esc]  
Exit  
Will display a overlapping window with all  
options for the current item.  
[Enter]  
Select  
Using the +, –, Page Up and Page Down  
keys the user can toggle the value of the  
current item.  
[+/–/PU/PD] Value  
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BIOS Setup Utility  
SY-7VCA2  
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.  
R
O
M
P
C
I
/
I
S
A
B
I
O
I L  
E
S
C
M
O
S
S
E
T
U
T
P
U
T
I
T
Y
Type [Y] to save the  
changes and exit or [N]  
to return to the Main  
Menu and keep current  
values.  
A
W
A
R
D
S
O
F
W
A
R
,
I
N
C
A
.
T
S
B
C
P
P
L
T
I O  
H
A
N
D
A
R
D
C
M
O
S
S
E
T
U
P
I N  
T
E
G
R
E
D
P
E
R
I P  
H
E
R
A
L
S
S
F
E
I P  
W
P
S
E
O
N
E
R
C
S
B
SAVE to CMOS and EXIT  
/
P
O
O
A
A
D
L
D
I O  
S
D
E
F
A
U
L
T
S
•
¯
®
¬
E
F
s
c
:
Q
S
u
i
t
:
:
S
C
e
h
l e  
a
c
t
I
t
e
m
1
0
:
a
v
e
&
E
x
i
t
S
e
t
u
p
(
S
h
i
f
t
)
F
2
n
g
e
C
o
l o  
r
T
i m  
e
,
D
a
t
e
,
H
a
r
d
D
i
s
k
T
y
p
e
…
EXIT WITHOUT SAVING  
Selecting the [EXIT WITHOUT SAVING] option allows you to abandon  
all data and exit setup, therefore ignoring all your changes.  
R
O
M
P
C
I / I S  
A
B
I O  
S
I
C
M
O
S
S
E
T
F
U
T
P
U
T
I
L
T
Y
A
W
A
R
D
S
O
W
A
R
E
,
I N  
C
.
Type [Y] to abandon  
changes and exit or [N]  
to return to the Main  
Menu and keep current  
values.  
S
B
C
P
P
L
T
A
N
D
A
R
D
C
M
E
O
S
S
S
E
T
U
P
I N  
S
T
E
G
R
A
T
E
O
D
P
E
R
I P  
S
H
E
R
A
L
S
I O  
H
S
F
E
A
T
U
R
S
E
T
U
P
U
P
E
R
V
I S  
R
P
A
S
W
O
R
D
I
W
O
N
P
Quit Without Saving (Y/N)? _  
O
A
L
O
A
•
¯
®
¬
E
F
s
c
:
Q
S
u
a
i t  
v
:
S
e
h
l
e
c
t
I
t
e
m
o
1
0
:
e
&
E
x
i t  
S
e
t
u
p
(
S
h
s
i
f
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)
F
2
:
C
a
n
g
e
C
l
o
r
T
i
m
e
,
D
a
t
e
,
H
a
r
d
D
i
k
T
y
p
e
…
54  
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BIOS Setup Utility  
SY-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 Frequency  
CPU Ratio  
HW Default  
X 3  
Item Help  
Auto detect DIMM/PCI Clk  
Spread Spectrum  
Enabled  
Disabled  
Menu Level  
4
C.I.H. 4-WAY Protection  
CPU L2 Latency Control  
x CPU L2 Latency Value  
Enabled  
Default  
0
CPU L2 Cache ECC Checking Enabled  
Processor Number Feature  
Vcore Voltage Adjust  
Quick Power On Self Test  
Disabled  
Normal  
Enabled  
First Boot Device  
Second Boot Device  
Third Boot Device  
Boot Other Device  
Floppy  
HDD-0  
LS/ZIP  
Enabled  
OnChip Sound  
OnChip Modem  
Auto  
Auto  
áâàß:Move  
Enter:Select  
+/-/PU/PD:Value F10:Save  
F6:Fail-Safe Defaults  
ESC:Exit  
F1:General Help  
F5:Previous Values  
F7: Optimized Defaults  
The [SOYO COMBO SETUP] menu combines the main parameters that  
you need to configure, all in one menu, for a quick setup in BIOS.  
55  
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BIOS Setup Utility  
SY-7VCA2  
Description Note  
3-1.1 Quick CPU Frequency Setup  
Quick CPU  
Setting  
Frequency Setup  
HW Default 120/40 MHz Select the host clock of your  
CPU Host/PCI  
Clock  
Socket 370 processor among  
these values.  
66/33 MHz 124/31 MHz  
68/34 MHz 126/31 MHz  
75/37 MHz 129/32 MHz  
80/40 MHz 133/33 MHz  
83/41 MHz 135/33 MHz  
85/28 MHz 138/34 MHz  
90/30 MHz 140/35 MHz  
95/31 MHz 141/35 MHz  
100/33 MHz 143/35 MHz  
103/34 MHz 145/36 MHz  
105/35 MHz 147/36 MHz  
109/36 MHz 150/37 MHz  
112/37 MHz 154/38 MHz  
114/38 MHz 160/40 MHz  
115/38 MHz 166/41 MHz  
118/39 MHz  
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.  
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.  
CPU Ratio  
Disabled When enabled, this item will  
auto detect if the DIMM and  
Auto Detect  
DIMM/PCI Clk  
Enabled  
Default  
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.  
Disabled This item allows you to  
Default  
Spread  
enable/disable the spread  
Spectrum  
Enabled  
spectrum modulate.  
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BIOS Setup Utility  
SY-7VCA2  
3-1.2 C.I.H. 4-WAY Protection Settings  
Setting  
Description  
Note  
Disabled When set to enabled, the BIOS can  
C.I.H. 4-  
WAY  
only be programmed through  
Enabled  
Default  
AWDFLASH, making sure that any  
Protection  
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  
Setting  
Description  
Note  
Default  
Manual  
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.  
Default  
CPU L2  
Latency  
Control  
1~15  
If the item above is set to  
‘ 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  
Latency Value  
Disabled  
Enabled  
CPU L2 Cache  
ECC Checking  
This option activates the CPU Default  
L2 cache ECC checking  
function.  
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BIOS Setup Utility  
SY-7VCA2  
Note  
3-1.4 Processor Number Feature  
Setting  
Description  
Disabled Setting this item to enabled will allow Default  
Processor  
Number  
Feature  
application programs to read the ID-  
Enabled  
code in your Pentium III CPU,  
disabling this item will not allow any  
program to read the CPU ID code.  
3-1.5 Vcore voltage Setup  
Vcore voltage Setting Description  
Setup  
Note  
Normal  
+1.5 %  
+3.0 %  
+4.5 %  
+6.0 %  
+7.5 %  
+9.0 %  
Default  
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  
core voltage. If the Vcore Voltage Adjust is set to  
normal, the Vcore will be exactly what the VID  
code specifies. If an adjustment percentage is  
selected the Vcore will be that percentage higher  
Vcore voltage  
Adjust  
+10.0% than the VID code specifies. For instance the CPU  
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  
Setting  
Description  
Note  
Disabled  
Quick Power  
On Self Test  
Enabled Provides a fast POTS at boot-up. Default  
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BIOS Setup Utility  
SY-7VCA2  
Note  
3-1.7 System Boot Control Settings  
System Boot  
Setting  
Description  
Control Settings  
Floppy  
LS/ZIP  
HDD-0  
SCSI  
Select Your Boot Device  
Priority  
First  
/Second/Third  
Boot Device  
CDROM  
HDD-1  
HDD-2  
HDD-3  
LAN  
Disabled  
Disabled  
Enabled  
Select Your Boot Device  
Priority  
Boot Other  
Device  
Default  
Default  
Disabled  
Auto  
This item allows you to  
control the onboard AC 97  
audio/ MC 97 Modem.  
OnChip  
Sound/Modem  
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BIOS Setup Utility  
SY-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)  
Time (hh:mm:ss)  
Fri, Jan 1 1999  
1 : 22 : 12  
Item Help  
Menu Level  
4
4 IDE Primary Master  
4 IDE Primary Slave  
4 IDE Secondary Master  
4 IDE Secondary Slave  
Press Enter None  
Press Enter None  
Press Enter None  
Press Enter None  
Drive A  
Drive B  
1.44M, 3.5 in.  
None  
Floppy 3 Mode Support  
Disabled  
Video  
Halt On  
EGA/VGA  
All Errors  
Base Memory  
Extended Memory  
Total Memory  
640K  
30720K  
31744K  
áâàß:Move  
Enter:Select  
+/-/PU/PD:Value F10:Save  
F6:Fail-Safe Defaults  
ESC:Exit  
F1:General Help  
F5:Previous Values  
F7: Optimized Defaults  
This screen allows you to modify the basic CMOS settings.  
After you have completed the changes, press [Esc] key to return to the  
Main Menu.  
3-2.1 Date & Time  
Display  
mm/dd/yyyy Type the current date You can also the  
PUp/PDn keys to toggle  
Setting  
Please Note  
Date  
Time  
hh:mm:ss  
Type the current time 24-hour clock format  
3:15 PM is displayed as  
15:15:00  
60  
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BIOS Setup Utility  
SY-7VCA2  
3-2.2 Hard Disks Type & Mode  
Choose the type and mode for the hard disks that you have already  
installed.  
Primary  
Setting  
Description  
Note  
(Secondary)  
Master & Slave  
Press  
Enter  
To auto-detect the HDD’ s size,  
head …on this channel  
IDE HDD Auto-  
Detection  
Auto  
BIOS detects hard disk type  
automatically.  
User defines the type of hard disk.  
Default  
Default  
IDE Primary  
Slave  
(User Type)  
User  
None  
Auto  
BIOS detects hard disk mode  
automatically.  
Access Mode  
Normal Normal IDE hard disk  
<528MB  
>528MB  
LBA  
Enhanced IDE hard disk  
Large IDE hard disk (for certain  
hard disk)  
Large  
Note: If you have any questions on your hard disk type or mode, ask  
your hard disk provider or previous user for details.  
3-2.3 Floppy Drives  
Floppy Drives  
Setting  
Description  
Note  
360KB, 5.25 in.  
1.2MB, 5.25 in.  
720KB, 3.5 in.  
1.44MB, 3.5 in.  
2.88MB, 3.5 in.  
None  
Drives A & B  
Default  
Not installed  
Disabled  
Drive A  
Drive B  
Both  
Default  
Floppy 3-Mode  
Support  
Supports 3-mode  
floppy diskette:  
740KB/1.2MB/  
1.44MB on selected  
disk drive.  
Special disk drive  
commonly used in  
Japan  
61  
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BIOS Setup Utility  
SY-7VCA2  
3-2.4 Others Optional  
Setting  
Description  
Note  
EGA/VGA  
CGA 40  
Select the video mode.  
Default  
Video  
CGA 80  
MONO  
(Monochrome)  
ALL Errors  
No Errors  
All, But Keyboard  
All, But Diskette  
All, But Disk/Key  
When the BIOS detects system Default  
errors, this function will stop the  
system. Select which type of  
Halt On  
error will cause the system halt.  
62  
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BIOS Setup Utility  
SY-7VCA2  
3-3 ADVANCED BIOS FEATURES  
Select the [Advanced BIOS Features] option from the Main Menu and  
press [Enter] key.  
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software  
Advanced BIOS Features  
Anti-Virus Protection  
CPU Internal Cache  
External Cache  
Disabled  
Enabled  
Enabled  
Disabled  
Enabled  
On  
Item Help  
Menu Level  
4
Swap Floppy Drive  
Boot Up Floppy Seek  
Boot Up NumLock Status  
Gate A20 Option  
Fast  
Typematic Rate Setting  
x Typematic Rate (Chars/Sec)  
x Typematic Delay (Msec)  
Security Option  
Disabled  
6
250  
Setup  
OS Select For DRAM > 64MB Non-OS2  
Report No FDD For WIN 95  
Video BIOS Shadow  
Yes  
Enabled  
Disabled  
Disabled  
Disabled  
Disabled  
Disabled  
Disabled  
C8000-CBFFF Shadow  
CC000-CFFFF Shadow  
D0000-D3FFF Shadow  
D4000-D7FFF Shadow  
D8000-DBFFF Shadow  
DC000-DFFFF Shadow  
áâàß:Move  
Enter:Select  
+/-/PU/PD:Value F10:Save  
F6:Fail-Safe Defaults  
ESC:Exit  
F1:General Help  
F5:Previous Values  
F7: Optimized Defaults  
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  
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BIOS Setup Utility  
SY-7VCA2  
Note  
3-3.1 Virus Warning  
Setting  
Description  
Disabled If set to enabled, the Paragon Anti- Default  
Anti - Virus  
Protection  
Virus. Function will scan your boot  
Enabled  
drive for boot virusses. If a boot  
virus is detected, the BIOS will  
display a warning message.  
3-3.2 Cache Memory Options  
Setting  
Description  
Note  
Disabled  
CPU Internal Cache  
External Cache  
Enabled Enables the CPU's internal Default  
cache.  
Disabled  
Enabled Enables the external  
memory.  
Default  
3-3.3 Floppy Driver Settings  
Setting  
Description  
Note  
Disabled  
Enabled  
Default  
Swap Floppy  
Drive  
Changes the sequence of A and B  
drives.  
3-3.4 Boot Up Floppy Seek  
Setting  
Description  
Note  
Disabled Seeks disk drives during boot up.  
Disabling speeds boot up.  
Enabled  
Boot Up Floppy  
Seek  
Default  
3-3.5 Boot Up NumLock Status  
Setting  
Description  
Note  
On  
Off  
Puts numeric keypad in  
NumLock mode at boot-up.  
Puts numeric keypad in arrow key  
mode at boot-up.  
Default  
Boot Up  
NumLock  
Status  
64  
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BIOS Setup Utility  
SY-7VCA2  
Note  
3-3.6 Gate A20 Options  
Setting  
Description  
Normal  
Fast  
Lets chipset control GateA20.  
A pin in the keyboard controller Default  
controls GateA20.  
Gate A20  
Options  
3-3.7 Typematic Settings  
Typematic Settings Setting  
Description  
Note  
Disabled  
Enabled  
Keystrokes repeat at a rate Default  
determined by the  
keyboard.  
When enables , the  
typematic rate and  
typematic delay can be  
selected.  
Typematic  
Rate Setting  
The following [Typematic Rate] and [Typematic Delay] fields are active  
only if [Typematic Rate Setting] is set to [Enabled]  
6 (Char/sec)  
8 (Char/sec)  
10 (Char/sec)  
12 (Char/sec)  
15 (Char/sec)  
20 (Char/sec)  
24 (Char/sec)  
30 (Char/sec)  
Choose the rate at which a Default  
character is repeated when  
holding down a key.  
Typematic Rate  
250 (msec)  
500 (msec)  
750 (msec)  
1000 (msec)  
Choose how long after  
you press a key down the  
character begins  
Default  
Typematic Delay  
repeating.  
65  
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BIOS Setup Utility  
SY-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.  
Setting  
Description  
System Each time the system is booted, the  
password prompt appears.  
Security Option  
Setup  
If 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 Setting  
Options  
Description  
Note  
OS2  
When using an OS2 operating  
system.  
OS Select for  
DRAM>64MB  
Non-OS2 When using another,  
non-OS2 operating system.  
Default  
Yes  
No  
Windows will release IRQ line 6 Default  
(normally used by the Floppy  
Disk Drive) after you disable  
your on-board FDD and set this  
field to [Yes].  
Windows will reserve INT 6 for  
your FDD, whether it is disabled  
or not.  
Report No FDD  
For WIN 95  
Disabled  
Enabled  
Video BIOS  
Shadow  
Default  
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.  
66  
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BIOS Setup Utility  
SY-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  
5
Bank 0/1 DRAM Timing  
Bank 2/3 DRAM Timing  
Bank 4/5 DRAM Timing  
DRAM Clock  
SDRAM Cycle Length  
Bank Interleave  
SDRAM 8/10ns  
SDRAM 8/10ns  
SDRAM 8/10ns  
Host CLK  
3
Item Help  
Menu Level  
4
4 Bank  
Memory Hole  
Disabled  
Enabled  
Enabled  
4 Level  
Disabled  
Disabled  
64M  
P2C/C2P Concurrency  
Fast R-W Turn Around  
CPU In Order Queue Size  
System BIOS Cacheable  
Video RAM Cacheable  
AGP Aperture Size  
AGP-4X Mode  
Enabled  
Auto  
DA  
AGP Driving Control  
x AGP Driving Value  
AGP Fast Write  
Disabled  
Enabled  
Disabled  
Enabled  
Enabled  
Enabled  
Enabled  
Enabled  
Disabled  
Disabled  
Disabled  
OnChip USB  
USB Keyboard Support  
CPU to PCI Write Buffer  
PCI Dynmic Bursting  
PCI Master 0 WS Write  
PCI Delay Transaction  
PCI#2 Access #1 Retry  
AGP Master 1 WS Write  
AGP Master 1 WS Read  
Memory Parity/ECC Check  
6
áâàß:Move  
Enter:Select  
+/-/PU/PD:Value F10:Save  
F6:Fail-Safe Defaults  
ESC:Exit  
F1:General Help  
F5:Previous Values  
F7: Optimized Defaults  
67  
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BIOS Setup Utility  
SY-7VCA2  
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  
Setting  
Description  
Note  
FEATURES  
SDRAM This item allows you to select the  
Default  
Bank 0/1, 2/3,  
4/5 DRAM  
Timing  
8/10ns  
SDRAM  
8ns  
value in this field, depending on  
whether the board has paged  
DRAMs or EDO (extended data  
output) DRAMs.  
Normal  
Medium  
Fast  
Turbo  
Host Clock  
HCLK-33M  
HCLK+33M  
Default  
Default  
This item allows you to control the  
DRAM speed.  
DRAM Clock  
2
3
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  
SDRAM Cycle  
Length  
specified by the system designer.  
4 Bank  
Disabled  
2 Bank  
Increase DRAM performance.  
Default  
Default  
Bank  
Interleave  
Disabled  
Enabled  
Memory Hole  
Some interface cards will map their  
ROM address to this area. If this  
occurs, select [Enabled] in this field.  
Disabled This item allows you to  
enable/disable the PCI to CPU, CPU  
P2C/C2P  
Concurrency  
Enabled  
Default  
to PCI concurrency  
68  
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BIOS Setup Utility  
SY-7VCA2  
Note  
CHIPSET FEATURES SETUP (Continued)  
CHIPSET  
Setting  
Description  
FEATURES  
Disabled This item controls the DRAM  
Fast R-W  
timing. It allows you to enable/  
disable the fast read/write turn  
around.  
Turn Around  
Enabled  
Default  
Default  
4 Level  
1 Level  
This item is related to cache  
performance. A queue size of 4  
gives highest performance.  
CPU In Order  
Queue Size  
Disabled  
Enabled  
System BIOS  
Cacheable  
The ROM area F0000H-FFFFFH is Default  
cacheable.  
Disabled When synchronous DRAM is  
Default  
Video RAM  
Cacheable  
installed, the number of clock cycles  
Enabled  
of CAS latency depends on the  
DRAM timing. Do not reset this  
field from the default value  
specified by the system designer  
64M  
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  
AGP Aperture  
Size  
4M, 8M,  
16M, 32M,  
128M,  
256M.  
Disabled This item allows you to enable /  
AGP-4X Mode  
disable the AGP-4X Mode.  
Enabled  
Default  
Auto  
Manual  
This item allows you to adjust the Default  
AGP driving force. Choose Manual  
to key in a AGP Driving Value in  
the next selection. This field is  
AGP Driving  
Control  
recommended to set in Auto for  
avoiding any error in your system.  
69  
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BIOS Setup Utility  
SY-7VCA2  
Note  
CHIPSET FEATURES SETUP (Continued)  
CHIPSET  
Setting  
Description  
FEATURES  
Min=0000 This item allows you to adjust the  
AGP Driving  
Value  
~
AGP driving force.  
Max=00FF  
Disabled The VIA chipset will use fast write Default  
AGP Fast  
Write  
to AGP if this item is enabled. Not  
Enabled  
all AGP cards support fast write.  
Disabled This should be enabled if your  
OnChip USB  
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.  
Enabled  
Default  
Default  
Disabled  
Enabled  
USB  
Keyboard  
Support  
Select Enabled if your system  
contains a Universal Serial Bus  
(USB) controller and you have a  
USB keyboard.  
Disabled When this field is Enabled, writes  
CPU to PCI  
Write Buffer  
from the CPU to the PCI bus are  
Enabled  
Default  
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.  
Disabled When Enabled, every write  
PCI Dynmic  
Bursting  
transaction goes to the write buffer.  
Enabled  
Default  
Burstable transactions then burst on  
the PCI bus and nonburstable  
transactions don’ t.  
70  
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BIOS Setup Utility  
SY-7VCA2  
Note  
CHIPSET FEATURES SETUP (Continued)  
CHIPSET  
Setting  
Description  
FEATURES  
Disabled  
Enabled  
PCI Master 0  
WS Write  
When Enabled, writes to the PCI  
bus are executed with zero wait  
states.  
Default  
Disabled The chipset has an embedded 32-bit  
PCI Delay  
posted write buffer to support delay  
Transaction  
Enabled  
Default  
transactions cycles. Select Enabled  
to support compliance with PCI  
specification version 2.1.  
Disabled When disabled, PCI#2 will not be  
PCI#2 Access  
#1 Retry  
disconnected until access finishes  
Enabled  
Default  
Default  
Default  
Default  
(difault). When enabled, PCI#2 will  
be disconnected if max retries are  
attempted without success.  
Disabled  
Enabled  
AGP Master 1  
WS Write  
When Enabled, writes to the  
AGP(Accelerated Graphics Port) are  
executed with one wait states.  
Disabled  
Enabled  
AGP Master 1  
WS Read  
When Enabled, read to the AGP  
(Accelerated Graphics Port) are  
executed with one wait states.  
Disabled  
Enabled  
Memory  
Parity/ECC  
Check  
This item enabled to detect the  
memory parity and Error Checking  
& Correcting.  
71  
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BIOS Setup Utility  
SY-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  
5
OnChip IDE Channel0  
OnChip IDE Channel1  
IDE Prefetch Mode  
Enabled  
Enabled  
Enabled  
Auto  
Item Help  
Menu Level  
4
Primary Master  
Primary Slave  
PIO  
PIO  
Auto  
Secondary Master PIO  
Secondary Slave PIO  
Auto  
Auto  
Primary Master  
Primary Slave  
UDMA  
UDMA  
Auto  
Auto  
Secondary Master UDMA  
Secondary Slave UDMA  
Init Display First  
IDE HDD Block Mode  
Onboard FDD Controller  
Onboard Serial Port 1  
Onboard Serial Port 2  
UART 2 Mode  
x IR Function Duplex  
x TX,RX inverting enable  
Onboard Parallel Port  
Onboard Parallel Mode  
x ECP Mode Use DMA  
x Parallel Port EPP Type  
Onboard Legacy Audio  
Sound Blaster  
Auto  
Auto  
PCI Slot  
Enabled  
Enabled  
3F8/IRQ4  
2F8/IRQ3  
Standard  
Half  
No, Yes  
378/IRQ7  
Normal  
3
Epp1.9  
Enabled  
Disabled  
220H  
SB I/O Base Address  
SB IRQ Select  
IRQ 5  
SB DMA Select  
MPU-401  
MPU-401 I/O Address  
Game Port (200-207H)  
DMA 1  
Disabled  
330-333H  
Enabled  
6
áâàß:Move  
Enter:Select  
+/-/PU/PD:Value F10:Save  
F6:Fail-Safe Defaults  
ESC:Exit  
F1:General Help  
F5:Previous Values  
F7: Optimized Defaults  
72  
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BIOS Setup Utility  
SY-7VCA2  
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 Controls  
Setting  
Description  
Note  
Disabled  
Turn off the on-board  
IDE  
On-Chip PCI IDE  
Ø Primary  
Ø Secondary  
Enabled  
Use the on-board IDE  
Default  
mode 0-4  
0 is the slowest speed  
4 is the fastest speed  
IDE  
Ø
Ø
Ø
Primary Master PIO  
Primary Slave PIO  
Secondary Master PIO  
Auto  
For better performance Default  
and stability, we suggest  
you use the Auto setting  
to set the HDD control  
timing.  
Ø
Secondary Slave PIO  
Disabled  
Auto  
IDE  
ØPrimary Master UDMA  
ØPrimary Slave UDMA  
ØSecondary Master UDMA  
ØSecondary Slave UDMA  
Select Auto to enable  
Ultra DMA Mode  
support.  
Default  
3-5.2 Keyboard Controls  
Keyboard Controls Setting Description  
Note  
PCI Slot Choose which card – AGP  
Default  
Init Display First  
Display card or PCI VGA card –  
to initialize first.  
AGP  
3-5.3 IDE HDD Block Mode  
Setting  
Description  
Note  
Disabled  
Enabled  
IDE HDD Block Mode  
Invokes multi-sector  
transfer instead of one  
sector per transfer. Not  
all HDDs support this  
function.  
Default  
73  
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BIOS Setup Utility  
SY-7VCA2  
Note  
3-5.4 FDC Controls  
FDC Controls  
Setting  
Description  
Disabled  
Turn off the on-board  
floppy controller  
Onboard FDD  
controller  
Enabled  
Use the on-board floppy Default  
controller  
3-5.5 Onboard Serial Ports  
Onboard Serial Setting  
Ports  
Description  
Note  
Disabled  
Onboard  
Serial Port 1 /  
Serial Port 2  
3F8/IRQ4  
Choose serial port 1 & 2's I/O Default  
address.  
(port 1)  
Default  
(port 2)  
Do not set port 1 & 2 to the  
same address except for  
Disabled or Auto.  
2F8/IRQ3  
3E8/IRQ4  
2E8/IRQ3  
Auto  
Standard  
HPSIR  
ASKIR  
The second serial port offers Default  
these InfraRed interface  
modes.  
UART 2 Mode  
If [UART Mode Select] is set to [IrDA]/[ASKIR]  
Half  
Full  
Choose [Half] or [Duplex] to Default  
set UR2 in half duplex mode  
or full duplex mode  
IR Function  
Duplex  
respectively. Refer to your IR  
device specifications to select  
the suitable mode.  
No,Yes  
This item allow you to enable Default  
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  
TX,RX inverting  
enable  
No, No/  
Yes, No/  
Yes, Yes.  
74  
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BIOS Setup Utility  
SY-7VCA2  
Note  
3-5.6 Onboard Parallel Ports  
Onboard Parallel  
Ports  
Setting  
Description  
Disabled  
Choose the printer I/O  
address.  
Onboard Parallel  
Port  
378/IRQ7  
3BC/IRQ7  
278/IRQ5  
Default  
Normal  
EPP  
ECP  
The mode depends on your Default  
external device that  
connects to this port.  
Parallel Port Mode  
ECP+EPP  
If [Parallel Port Mode] is set to [ECP] mode  
3
1
Choose DMA3  
Choose DMA1  
Default  
Default  
ECP Mode use  
DMA  
If [Parallel Port Mode] is set to [EPP] mode  
EPP 1.9  
EPP 1.7  
Select EPP port type 1.9  
Select EPP port type 1.7  
Parallel Port EPP  
TYPE  
3-5.7 Onboard Legacy Audio  
This field controls the onboard legacy audio.  
Setting Description  
Note  
Disabled Set this item to Enabled if using  
Onboard  
software (like DOS games) that needs  
a ‘ legacy’ audio device.  
Legacy Audio  
Enabled  
Default  
Default  
Disabled Set this item to enabled if your on-  
Sound Blaster  
board audio-chip is sound Blaster  
compatible.  
Enabled  
220H  
Select the base address for your  
sound Blaster (SB) compatible Audio  
IC.  
Default  
SB I/O Base  
Address  
IRQ 5 Select the IRQ your SB Audio IC  
uses.  
Default  
Default  
SB IRQ Select  
SB DMA Select  
DMA1 Select the DMA channel your SB  
Audio IC uses.  
75  
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BIOS Setup Utility  
SY-7VCA2  
Note  
Onboard Legacy Audio (Continued)  
This field controls the onboard legacy audio.  
Setting  
Description  
Disabled Set this item to enabled to make use Default  
of MIPI.  
MPU-401  
Enabled  
330-333H Select the I/O address for your MIDI Default  
MPU-401 I/O  
Address  
functionality.  
330-303H  
310-313H  
320-323H  
Disabled Set this item to enabled to make use  
of the game port.  
Game Port  
(200-207H)  
Enabled  
Default  
76  
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BIOS Setup Utility  
SY-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 Management  
ACPI Suspend Type  
PM Control by APM  
Video Off Option  
Video Off Method  
MODE Use IRQ  
Press Enter  
S1 (POS)  
Yes  
Suspend -> Off  
V/H SYNC+Blank  
3
Item Help  
Menu Level  
4
Soft-Off by PWRBTN  
State After Power Failure  
Wake Up Events  
Instant-Off  
Off  
Press Enter  
áâàß:Move  
Enter:Select  
+/-/PU/PD:Value F10:Save  
F6:Fail-Safe Defaults  
ESC:Exit  
F1:General Help  
F5:Previous Values  
F7: Optimized Defaults  
CMOS Setup Utility – Copyright ( C ) 1984-1999 Award Software  
Wake Up Events  
VGA  
OFF  
Item Help  
LPT & COM  
HDD & FDD  
LPT/COM  
ON  
Menu Level  
4
PCI Master  
OFF  
PowerOn by PCI Card  
Modem Ring Resume  
RTC Alarm Resume  
Disabled  
Disabled  
Disabled  
Primary INTR  
ON  
IRQs Activity Monitoring  
Press Enter  
áâàß:Move  
Enter:Select  
+/-/PU/PD:Value F10:Save  
F6:Fail-Safe Defaults  
ESC:Exit  
F1:General Help  
F5:Previous Values  
F7: Optimized Defaults  
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BIOS Setup Utility  
SY-7VCA2  
After you have completed the Power Management Setup, press [Esc] to  
return to the Main Menu.  
3-6.1 Power Management Controls  
Power  
Setting  
Description  
Note  
Management  
Controls  
Lets you define the HDD and  
system power down times.  
Default  
Power  
Management  
Doze  
timer  
Standby Suspend HDD  
timer  
timer  
power  
down  
Min Saving 1 Hour  
Max Saving 1 Min  
1 Hour 1 Hour  
1 Min 1 Min  
15 Min  
1 Min  
Yes  
NO  
When enabled, an Advanced  
Power Management device will  
Default  
PM Control  
by APM  
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.  
Suspend --> When enabled, this feature  
Default  
Video Off  
Option  
Off  
allows the VGA adapter to  
operate in a power saving mode.  
Always On  
All Modes --  
> Off  
V/H  
Selects the method by which the Default  
Video Off  
Method  
Sync+Blank monitor is blanked.  
Blank screen  
DPMS  
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BIOS Setup Utility  
SY-7VCA2  
Note  
Power Management Controls (Continued)  
Power  
Setting  
Description  
Management  
Controls  
3
Assigns an IRQ# to the modem  
device.  
Default  
Default  
MODEM Use  
IRQ  
3-11, NA  
Instant-off  
Delay 4  
Sec.  
Soft-Off by  
PWR-BTTN  
Turns off the system power 4  
seconds after pushing the power  
button.  
On  
The system will switch on when  
power comes back after a power  
failure.  
State After  
Power Failure  
Off  
The system will remain off when Default  
power comes back after a power  
failure.  
Auto  
The system will return to the state  
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)  
Press Enter Select items that will wake up your  
system when in one of sleep  
modes. Press enter to go the select  
item page.  
Wake Up  
Events  
Wake Up  
Events  
Setting  
Description  
Note  
OFF  
ON  
Default  
VGA  
You can set the VGA awakens the  
system.  
LPT/COM When On of LPT & COM, any  
LPT & COM  
activity from one of the listed  
system peripheral devices or IRQs  
wakes up the system.  
NONE,  
LPT,  
COM  
Default  
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BIOS Setup Utility  
SY-7VCA2  
Note  
Wake Up  
Events  
Setting  
Description  
OFF  
ON  
When On of HDD & FDD, any  
activity from one of the listed  
system peripheral devices wakes up  
the system.  
Default  
HDD & FDD  
PCI Master  
OFF  
ON  
When On of PCI Master, any  
activity from one of the listed  
system peripheral devices wakes up  
the system  
Default  
Disabled If enabled any PCI interrupt will  
PowerOn by  
PCI Card  
wake up the system.  
Enabled  
Default  
Default  
Disabled An input signal on the serial Ring  
Modem Ring  
Resume  
Indicator (RI) line (in other words,  
Enabled  
an incoming call on the modem)  
awakens the system from a soft off  
state.  
Disabled The system ignores the alarm.  
Default  
Resume by  
Alarm  
Enabled  
Set alarm to power on the system by  
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.  
ON  
OFF  
When set to On, any event occurring Default  
at will awaken a system which has  
been powered down.  
Primary INTR  
Primary  
IRQ3(COM2), IRQ4(COM1),  
IRQ5(LPT2), IRQ6(Floppy Disk),  
IRQ7(LPT1), IRQ12(PS/2 mouse),  
IRQ13(Coprocessor),  
IRQs Activity  
Monitoring  
(Press Enter)  
IRQ14(HardDsik)  
Secondary IRQ9(IRQ2 Redir),  
IRQ10( Reserved),  
IRQ11(Reserved)  
Disabled IRQ8 (RTC Alarm), IRQ15  
(Reserved)  
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BIOS Setup Utility  
SY-7VCA2  
3-7 PNP/PCI CONFIGURATION SETUP  
This option sets the Motherboard's PCI Slots.  
CMOS Setup Utility – Copyright ( C ) 1984-2000 Award Software  
PnP/PCI Configurations  
PNP OS Installed  
Reset Configuration Data  
NO  
Disabled  
Item Help  
Menu Level  
4
Resources Controlled By  
x IRQ Resources  
Auto (ESCD)  
Press Enter  
Press Enter  
x DMA Resources  
PCI/VGA Palette Snoop  
Assign IRQ For VGA  
Assign IRQ For USB  
Disabled  
Enabled  
Enabled  
INT Pin 1 Assignment  
INT Pin 2 Assignment  
INT Pin 3 Assignment  
INT Pin 4 Assignment  
Auto  
Auto  
Auto  
Auto  
áâàß:Move  
Enter:Select  
+/-/PU/PD:Value F10:Save  
F6:Fail-Safe Defaults  
ESC:Exit  
F1:General Help  
F5:Previous Values  
F7: Optimized Defaults  
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.  
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BIOS Setup Utility  
SY-7VCA2  
3-7.1 PNP/PCI Configuration Controls  
PNP/PCI  
Controls  
Setting Description  
Note  
Yes  
No  
Set this field to [Yes] if you  
PnP OS  
Installed  
are running Windows 95,  
which is PnP compatible.  
If the OS you are running  
does not support PnP  
configuration.  
Default  
(If there is any  
doubt, set this  
field to [No])  
Disabled Retain PnP configuration  
data in BIOS.  
Enabled Reset PnP configuration data  
in BIOS.  
Default  
Reset  
Configuration  
Data  
Manual BIOS does not manage PCI/ISA PnP  
card IRQ assignment.  
Resources  
Controlled By  
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  
The Plug-and-Play BIOS  
Recommended  
(ESCD) auto manages PCI/ISA PnP  
card IRQ assignment  
automatically.  
If [Resources Controlled By] is set to [Manual]  
PCI/ISA PnP Choose IRQ-# and  
DMA-# assigned to  
IRQ-3,4,5,7,9,10,  
11,12,14,15  
IRQ-# and  
DMA-#  
PCI/ISA PnP card.  
assigned to:  
DMA-0,1,3,5,6,7  
IRQ-3,4,5,7,9,10,  
11,12,14,15  
Legacy ISA Choose IRQ-# and  
DMA-# assigned to  
Legacy ISA card.  
DMA-0,1,3,5,6,7  
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:  
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BIOS Setup Utility  
SY-7VCA2  
PNP/PCI Configuration Setup (Continued)  
PNP/PCI  
Setup  
Setting  
Description  
Note  
How to set the BIOS to release the IRQ to the PnP Interrupt pool:  
PnP / PCI configuration Integrated Peripherals  
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  
Interrupt 12 will be released by the PnP  
IRQ 12 IRQ 12: PCI / ISA PnP BIOS automatically if the PS/2 Mouse Port  
is not used.  
IRQ 7  
IRQ 4  
IRQ 3  
IRQ 7: PCI / ISA PnP Onboard parallel port: disabled  
IRQ 4: PCI / ISA PnP Onboard Serial port 1: disabled  
IRQ 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.  
Disabled BIOS will assign IRQ for  
VGA/USB port.  
Assign IRQ  
For  
VGA/USB  
Enabled BIOS 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.  
INT Pin  
1/2/3/4  
Auto  
Set to Auto the BIOS will  
using IRQs Automatically.  
Default  
Assignment  
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BIOS Setup Utility  
SY-7VCA2  
3-7.2 MULTI I/O ADDRESSES  
Default settings for multi-I/O addresses are as follows:  
Port  
I/O Address  
378H  
IRQ  
Status  
ECP/EPP  
7
4
3
LPT1  
3F8H  
COM1  
COM2  
2F8H  
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.  
Current System Temp.  
Current CPUFAN Speed  
Current CHAFAN Speed  
25 º C / 77 º F  
40 º C / 104 º F  
5192 RPM  
0 RPM  
Item Help  
Menu Level  
4
Vcore  
2.5V  
3.3V  
5V  
2.02 V  
2.50 V  
3.31 V  
4.97 V  
12V  
11.70 V  
áâàß:Move  
Enter:Select  
+/-/PU/PD:Value F10:Save  
F6:Fail-Safe Defaults  
ESC:Exit  
F1:General Help  
F5:Previous Values  
F7: Optimized Defaults  
Note: Starred (*) items will disappear when the [Resources  
Controlled By] option is set to [Auto].  
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BIOS Setup Utility  
SY-7VCA2  
Note  
3-8.1 CPU Device Monitoring  
CPU Device  
Monitoring  
Setting  
Description  
Show the current status of CPU  
temperature.  
Current CPU  
Temp.  
°C/°F  
Show the current status of the  
system temperature.  
Current System  
Temp.  
°C/°F  
°C/°F  
°C/°F  
V
Show the current status of CPU  
Fan  
Current  
CPUFAN Speed  
Show the current status of the  
chassis Fan  
Current  
CHSFAN Speed  
Show the current voltage status.  
Vcore, 2.5V,  
3.3V, +5V, +12V  
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BIOS Setup Utility  
SY-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 Feature  
4PC Health Status  
4Standard CMOS Features  
4Advanced BIOS Features  
4Advanced Chipset Features  
4Integrated Pe
Load Fail - Safe Defaults  
Load Optimized Defaults  
Set Supervisor Password  
d  
4Power Mana
p  
Load Fail - Safe Defaults (Y/N)? Y  
4PnP/PCI Co
ng  
Esc : Quit  
áâàß  
:
Select Item  
F10 : Save & Exit Setup  
Change CPU’ s Clock & Voltage  
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.  
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BIOS Setup Utility  
SY-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 Feature  
4PC Health Status  
4Standard CMOS Features  
4Advanced BIOS Features  
4Advanced Chipset Features  
4Integrated Pe
Load Fail - Safe Defaults  
Load Optimized Defaults  
Set Supervisor Password  
d  
4Power Mana
p  
Load Optimized Defaults (Y/N)? Y  
4PnP/PCI Co
ng  
Esc : Quit  
áâàß  
:
Select Item  
F10 : Save & Exit Setup  
Change CPU’ s Clock & Voltage  
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.  
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BIOS Setup Utility  
SY-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!!  
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BIOS Setup Utility  
SY-7VCA2  
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:  
Type the Password  
Press <Enter> without  
ROM PCI/ISA BIO
and Press: <Enter>  
entering the password  
CMOS SETUP UTILI
AWARD SOFTWARE,
STANDARD CMOS
RIPHERALS  
WORD  
Enter Password:  
BIOS FEATU
C
Enter Password:  
Password Disabled!!  
* * * * *  
P
SAVE & EXIT SETUP  
Confirm Password:  
* * * * *  
EXIT WITHOUT SAVING  
After you confirm the password,  
Esc : Quit  
m  
press <Esc> to exit  
F10 : Save & Exit Se
olor  
Time, Date, Hard Disk Type…  
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).  
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BIOS Setup Utility  
SY-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-Detection  
IDE Primary Master  
Press Enter  
Auto  
Item Help  
Menu Level  
4
Capacity  
0 MB  
Access Mode  
Auto  
0
0
0
0
0
Cylinder  
Head  
Precomp  
Landing Zone  
Sector  
0
áâàß:Move  
Enter:Select  
+/-/PU/PD:Value F10:Save  
F6:Fail-Safe Defaults  
ESC:Exit  
F1:General Help  
F5:Previous Values  
F7: Optimized Defaults  
Note: This function is only valid for IDE type of hard disk drives.  
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Drivers installation  
SY-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.  
X
Please Select Your Board  
LI-7000  
7IWB  
7IWA-F  
7IWA-F V1.0  
6IWM/L  
6IWM  
7IWB V1.0  
7IWM  
6IWA  
7IWM/L V1  
Cancel  
OK  
(SOYO CD Start Up Program Menu)  
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Drivers installation  
SY-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.  
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Drivers installation  
SY-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.  
driver  
VIA 4 in 1 driver package for Win 9x/NT  
revision:  
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:  
VIA 4in1 driver package  
Ø
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:  
¾ Bus Master PCI IDE Driver  
This driver will speed up the data-transfer rate to and from the  
harddisk.  
¾ AGP VxD Driver  
This driver must be installed in order to be able to make use of the  
on-board AGP Video functionality.  
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Drivers installation  
SY-7VCA2  
¾ 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.  
¾ 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.  
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