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AP55CS
User’s Guide
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Copyright
Copyright 1995 by this company. All rights reserved. No part of
this publication may be reproduced, transmitted, transcribed, stored
in a retrieval system, or translated into any language or computer
language, in any form or by any means, electronic, mechanical,
magnetic, optical, manual or otherwise, without the prior written
permission of this company.
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Disclaimer
This company makes no representations or warranties, either
expressed or implied, with respect to the contents hereof and
specifically disclaims any warranties, merchantability or fitness for
any particular purpose. Any software described in this manual is sold
or licensed "as is". Should the programs prove defective following
their purchase, the buyer (and not this company, its distributor, or its
dealer) assumes the entire cost of all necessary servicing, repair, and
any incidental or consequential damages resulting from any defect in
the software. Further, this company reserves the right to revise this
publication and to make changes from time to time in the contents
hereof without obligation to notify any person of such revision or
changes.
AMI is a registered trademark of American Megatrends, Inc.
Pentium is a registered trademark and P54C is a trademark of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their
respective holders.
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FCC Statement
FCC Class B Radio Frequency
Interference Statement
Note:
This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
4. Consult the dealer or an experienced radio/television technician
for help.
Notice 1:
The changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate
the equipment.
Notice 2:
Shielded interface cables, if any, must be used in order to comply
with emission limits.
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About this Manual
Purpose and Scope
This manual tells how to install and configure the system board.
Organization
This manual consists of four chapters and one appendix.
Chapter 1, Features, covers the specifications, layout and components of
the system board.
Chapter 2, Hardware Setup , tells how to set the jumpers, upgrade the CPU
and the system memory, install the system board and add expansion cards.
Chapter 3, VGA, describes the video graphics accelerator on board, and
lists the supported applications and display modes.
Chapter 4, AMI BIOS, explains the system BIOS and tells how to configure
the system by setting the BIOS parameters.
Appendix A, Jumper Summary , gives you a tabular summary of the jumper
settings discussed in Chapter 2.
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About this Manual
Conventions
The following conventions are used in this manual:
Text entered by user,
default settings,
recommended selections
message displayed
a, e, s, etc
Represent text input by the user,
default settings and recommended
selections
Denotes actual messages that appear
on screen
Represent the actual keys that you
have to press on the keyboard.
NOTE
Gives bits and pieces of additional
information related to the current topic.
WARNING
Alerts you to any damage that might
result from doing or not doing specific
actions.
CAUTION
Suggests precautionary measures to
avoid potential hardware or software
problems.
IMPORTANT
Reminds you to take specific action
relevant to the accomplishment of the
procedure at hand.
TIP
Tells how to accomplish a procedure
with minimum steps through little
shortcuts.
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Table of Contents
1 Features
Specifications.....................................................1-2
Board Layout......................................................1-3
System Board Parts............................................1-4
Microprocessor..........................................1-4
ASICs ........................................................1-4
AMI BIOS...................................................1-5
Expansion Slots.........................................1-5
DRAM Sockets...........................................1-5
SRAMs.......................................................1-5
Super I/O Controller...................................1-6
VGA Controller..........................................1-6
Two-channel PCI Mode 4
Enhanced IDE Interface............................1-6
Keyboard Connector..................................1-6
2 Hardware Setup
ESD Precautions................................................2-1
Installing a Microprocessor................................2-2
ZIF Microprocessor Socket........................2-2
Upgrading the Microprocessor...........................2-3
Jumper Settings.................................................2-4
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Table of Contents
Changing the CPU Type and Speed.........2-5
Changing the Flash ROM Type.................2-6
Selecting the ECP DMA Channel..............2-6
Enabling the FDC and Super I/O Chip......2-7
Selecting the Cache Mode.........................2-7
Enabling the Onboard VGA.......................2-8
Clearing the CMOS....................................2-9
Memory Configuration......................................2-10
Installing a SIMM.....................................2-12
Removing a SIMM...................................2-13
Connectors.......................................................2-14
Multifunction Connector...........................2-14
Keyboard Connector................................2-16
Power Connector.....................................2-16
Fan Connector.........................................2-17
VGA Connector........................................2-17
Break/Suspend Connector.......................2-18
Voltage Regulator Module (VRM)
Connector (optional)................................2-19
Installation........................................................2-19
Installing the System Board.....................2-19
Installing Expansion Boards....................2-20
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Table of Contents
3 VGA
Drivers and Utilities............................................3-2
Getting Started..........................................3-2
Supported Applications..............................3-2
Driver Diskettes.........................................3-3
Installing the Drivers..................................3-5
Standard Display Modes....................................3-6
Enhanced Video Modes.....................................3-7
MPEG Function..................................................3-9
4 AMI BIOS
AMI BIOS Setup Main Menu..............................4-1
Standard CMOS Setup .......................................4-2
Date/Time..................................................4-2
Floppy Drives A and B...............................4-3
Hard Disk Drives........................................4-4
Advanced CMOS Setup.....................................4-5
Typematic Rate (Chars./Sec.)...................4-7
System Keyboard.......................................4-8
Primary Display..........................................4-8
Above 1 MB Memory Test.........................4-8
Memory Test Tick Sound...........................4-8
Parity Error Check.....................................4-8
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Table of Contents
Hit “Del” Message Display.........................4-9
Extended BIOS RAM Area.........................4-9
Wait for F1 If Any Error ..............................4-9
System Boot-up Num Lock........................4-9
Floppy Drive Seek at Boot.......................4-10
Floppy Drive Swapping ............................4-10
System Boot-up Sequence......................4-10
Password Checking.................................4-10
Cache Memory.........................................4-10
Shadow....................................................4-11
IDE ......................................................4-12
1st Priority IRQ for PCI/PnP....................4-18
2nd IRQ...................................................4-18
3rd IRQ....................................................4-18
ISA Memory Block Base..........................4-18
ISA Memory Block Size...........................4-19
Boot to PnP Operating System................4-19
Chipset Setup Mode................................4-19
Chipset Features Setup...................................4-20
VGA Shared Memory Size.......................4-23
VGA Frequency.......................................4-23
DRAM......................................................4-23
SRAM ......................................................4-23
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Table of Contents
Cache and Memory..................................4-24
ISA Bus Clock and Timing.......................4-25
PCI Timing...............................................4-26
Power Management Setup...............................4-27
Power Management/APM........................4-28
Standby Timeout......................................4-28
Suspend Timeout.....................................4-28
Standby Mode Clock Speed....................4-29
Green PC Monitor....................................4-29
Green PC Monitor State..........................4-29
Video Power-down Mode.........................4-29
IDE Power-down Mode............................4-29
Video Access...........................................4-30
IDE Hard Disks........................................4-30
Serial Ports................................ ..............4-30
Parallel Ports...........................................4-30
Monitor I/O Port.......................................4-31
IRQ 3, IRQ 4, IRQ 5, IRQ 7,
IRQ 9, IRQ 10, IRQ 11, IRQ 14
and IRQ 15 Activities...............................4-32
Peripheral Setup..............................................4-32
Programming Mode................................ .4-33
Onboard FDC..........................................4-33
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Table of Contents
Serial Port 1................................ .............4-33
Serial Port 2................................ .............4-33
Parallel Port.............................................4-33
IRQ Active................................................4-34
Parallel Port Mode...................................4-34
Utility Setup......................................................4-35
IDE Setup................................................4-35
Color Set..................................................4-36
Default Setup...................................................4-37
Original....................................................4-37
Optimal....................................................4-37
Fail-safe...................................................4-38
Security Setup..................................................4-39
Password.................................................4-39
Anti-virus..................................................4-41
Exit Setup.........................................................4-42
NCR SCSI BIOS and Drivers...........................4-43
Appendix A Jumper Summary
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Chapter
Features 1
The AP55CS is a Pentium -based system board that utilizes the
PCI/ISA architecture. It has three ISA-AT and three PCI slots for
future expansion. It also has four 72-pin single in-line memory
modules (SIMM) sockets that accept both Fast Page mode and EDO
type DRAMs, and expand system memory to a maximum of 128 MB.
The onboard 256-KB pipelined-burst cache memory supports writeback and write-through modes.
The system board integrates the SiS application-specific integrated
circuit (ASIC) chipsets that enable the System Management Mode
(SMM) function of the Pentium chip. This function enables the board
to support the Dark Green Power Management feature that conforms
to the U.S. Environmental Protection Agency (EPA) Energy Star
standards.
A super I/O controller, a two-channel PCI mode 4 enhanced IDE and
a VGA controller are also incorporated in the motherboard to further
enhance system performance. The onboard VGA controller features
the shared-memory buffer architecture and functions not only as a
graphics accelerator, but also as a video accelerator. It allows a
maximum display resolution of 1280 x 1024, 256 colors, noninterlaced.
The AP55CS board measures 220 mm x 280 mm, a size that easily
fits most housings.
User’s Guide 1-1
Page 14
Features
Specifications
Microprocessor
Memory
SIMM Sockets
ASICs
VGA
Bus Architecture
Expansion Slots
Ports
Secondary Cache
BIOS
RTC
Battery
Board Size
Intel Pentium (3.3V) Processor, Cyrix 6x86
75/90/100/120/133/150/166 MHz
128 MB (maximum)
Four 72-pin, 32-/64-bit
SiS5511
SiS5512
SiS5513
SiS6205 64-bit graphics and video
accelerator
ISA, PCI
Three ISA and three PCI slots
One parallel port (SPP/ECP/EPP)
Two serial ports
Two-channel PCI mode 4 IDE
One floppy-disk drive port
256 KB pipelined-burst SRAM
AMI Plug-and-Play WinBIOS
Built-in ASIC
Lithium (CR2032)
220 mm x 280 mm (baby AT)
1-2 User’s Guide
Page 15
Features
Board Layout
1. Power connector 14. IDE1 connector
2. 72-pin SIMM sockets 15. IDE2 connector
3. SiS5512 ASIC 16. FDD connector
4. 256-KB pipelined-burst cache 17. ISA slots
5. CPU socket 18. Keyboard controller
6. Voltage Regulator Module 19. COM1 connector
(VRM) connector (optional) 20. COM 2 connector
7. Heatsink 21. Parallel port connector
8. HDD LED connector 22. PCI slots
9. Two-pin fan connector 23. System I/O controller chip
10. Lithium battery 24. Feature connector
11. System BIOS 25. SiS6205 VGA controller
12. SiS5513 ASIC 26. VGA connector
13. SiS5511 ASIC 27. AT-keyboard connector
User’s Guide 1-3
Page 16
Features
System Board Parts
Microprocessor
The AP55CS system board uses an Intel Pentium (3.3V) or a Cyrix
6x86 processor running at speeds of 75, 90, 100, 120, 133, 150 or
166 MHz. Chapter 2 gives details on how to upgrade the Pentium
processor.
ASICs
The three ASICs (application-specific integrated circuits) onboard are
the SiS5511, SiS5512, and SiS85C513. The SiS5511 serves as the
PCI/ISA cache memory controller that supports write-back and writethrough cache modes. It features a high-performance arbiter with
four PCI masters and a rotating priority mechanism. It also acts as a
PCI bridge that translates CPU cycles into PCI cycles.
The SiS5512 functions as a PCI local bus data buffer that offers 64bit DRAM and 32-bit PCI bus interfaces to support the 64-bit Pentium
processor data bus.
The SiS85C513 acts as the ISA/PCI bus bridge that translates the
PCI bus cycles into ISA bus cycles or vice-versa. It also functions as
an ISA arbiter, DMA cycle and interrupt controller.
1-4 User’s Guide
Page 17
Features
AMI BIOS
The AMI BIOS (basic input-output system) resides in the flash ROM
chip. This contains the program that performs the power-on selftests (POST) upon booting. During POST, this program activates the
peripheral devices, tests onboard memory, and prepares the system
for operation. Chapter 4 gives more information on the AMI BIOS.
Expansion Slots
The board expansion slots consist of three ISA-AT and three PCI
slots. These expansion slots are the parallel bars on the system
board. There are rows of golden pins inside each slot that serve as a
clutch to secure the contacts of expansion boards. Chapter 2 tells
how to install the expansion boards.
DRAM Sockets
The system board has four 72-pin DRAM sockets that expand system
memory to a maximum of 128 MB. These sockets accept singleand double-density single in-line memory modules (SIMMs) that
support either Fast Page or Extended Data Out (EDO) modes.
Chapter 2 discusses the different memory configurations available.
Second-level Cache
The system board comes with an onboard 256-KB pipelined-burst
cache. This enables AP55CS to enhance the performance of a
Pentium system.
User’s Guide 1-5
Page 18
Features
Super I/O Controller
The onboard super I/O controller chip supports two UART
16450/16550-compatible serial ports and a parallel port (SPP, EPP,
ECP)1, with a maximum data throughput rate of 1.2 MB/sec. It also
accommodates 1.2-/1.44-/2.88-MB disk drives allowing full-range
access to 5.25-inch drives with 360 KB or 1.2 MB format and 3.5-inch
drives with 720-KB, 1.44-MB or 2.88-MB format.
VGA Controller
The AP55CS board has a built-in SiS6205 VGA chip. This chip
functions both as a graphics and a video accelerator. See Chapter 3
for more details on the VGA feature.
Two-channel PCI Mode 4 Enhanced-IDE Interface
The board utilizes the enhanced integrated drive electronics (IDE)
interface that improves the data transfer rate. It also allows the
system to support four IDE devices, such as hard disk with more than
528 MB capacity, CD-ROM, and Tape drives. This feature enables
the users to increase the data storage.
Keyboard Connector
The keyboard connector at the rear of the system board accepts any
AT-compatible keyboard.
1
SPP: Standard Parallel Port
EPP: Enhanced Parallel Port (IEEE 1284 compliant)
ECP: Extended Capabilities Port (IEEE 1284 compliant)
1-6 User’s Guide
Page 19
Chapter
Hardware Setup2
This chapter tells how to set jumpers, upgrade system memory, add
expansion boards, and install the system board.
Install the CPU, memory, and set the jumpers before you install the system
board inside a system housing. You may add the other components after
installing the board. Read this chapter to learn about the components before
you install them.
ESD Precautions
Electrostatic discharge (ESD) can damage your processor, disk drives,
expansion boards, and other components. Always observe the following
precautions before you install a system component.
1. Do not remove a component from its protective packaging until you are
ready to install it.
2. Wear a wrist grounding strap and attach it to a metal part of the system
unit before handling components. If a wrist strap is not available,
maintain contact with the system unit throughout any procedure
requiring ESD protection.
User’s Guide 2-1
Page 20
Hardware Setup
Installing a Microprocessor
ZIF Microprocessor Socket
The motherboard has a zero-insertion force microprocessor socket that
allows you to install a CPU without using any tools.
Follow these steps to install a CPU in a ZIF-type upgrade socket:
Make sure that the system power is off before
installing any component.
1. Pull up the socket lever.
2. Insert the CPU with the attached heatsink and fan. Make sure that pin 1
of the CPU aligns with the hole 1 of the socket. The notched corner on
the CPU indicates pin 1.
3. Pull down the socket lever to lock the CPU into the socket.
4. Plug the fan cable into the onboard four-pin fan connector.
2-2 User’s Guide
Page 21
Hardware Setup
5. Set the jumpers accordingly. See the following sections for the correct
jumper settings.
Upgrading the Microprocessor
Follow these steps to upgrade the CPU:
1. Turn off the system power.
2. Pull up the socket lever.
3. Remove the installed CPU.
4. Install the upgrade CPU. Refer to the section Installing a
Microprocessor on how to install the CPU.
User’s Guide 2-3
Page 22
Hardware Setup
Jumper Settings
You have to change the jumper settings when you reconfigure your system.
This section tells how to reset the jumpers. The figure below shows the
jumper locations.
The jumpers JP3, JP8 and JP13 are reserved
for manufacturer use.
See Appendix A for the default settings.
2-4 User’s Guide
Page 23
Hardware Setup
Changing the CPU Type and Speed
Set jumpers JP9, JP10, JP22 and JP23 according to the CPU type and
speed. See the figure below.
CPU Type JP9 JP10 JP22 JP23
P54C-75
P54C-90
P54C-100
P54C/CS/CQS-120
P54C/CS/CQS-133
P54CS/CQS-150
P54CS/CQS-166
Cyrix 6x86-P120+
Cyrix 6x86-P150+
Cyrix 6x86-P166+
User’s Guide 2-5
Page 24
Hardware Setup
Changing the Flash ROM Type
Set the six-pin jumper JP18 according to the type of Flash ROM in use. If
the system uses EEPROM instead of Flash ROM, you must reset the jumper
to 2-3 and 4-5 The default setting depends on the BIOS ROM type.
FLASH ROM JP18
a. 5V Vpp
b. 12V Vpp
EEPROM
Selecting the ECP DMA Channel
The jumpers JP11 and JP12 are used to select the DMA channel for ECP
function.
JP11 JP12
DMA 1
DMA 3
Enabling the FDC and Super I/O Chip
The jumper JP14 is used to enable or disable the floppy disk controller
(FDC) and the super I/O chip. The onboard I/O chip supports two serial
2-6 User’s Guide
Page 25
Hardware Setup
ports, one parallel port and FDD functions. Set the jumper to 2-3 in case you
want to use a separate I/O card.
Enabled Disabled
JP14
Selecting the Cache Mode
The motherboard comes with a 256-KB pipelined-burst cache that supports
both the linear and the interleave cache modes. The onboard three-pin
jumper JP1 enables you to set the cache mode depending on the CPU type in
use. Select linear mode if the CPU in use is a Cyrix CPU. For an Intel CPU,
select interleave mode. The default setting is 2-3.
CACHE MODE JP1
Linear (Cyrix)
Interleave (Intel)
Enabling the Onboard VGA
The jumpers JP4, JP6 and JP7 let you enable or disable the onboard SiS
6205 VGA controller. This VGA controller enhances the display resolution
of the system. It supports a maximum resolution of 1280 x 1024, 256 colors,
NI.
User’s Guide 2-7
Page 26
Hardware Setup
JP4 JP6 JP7
Enabled
Disabled
The AP55CS support the PnP function. The
system automatically disables the onboard VGA
if you plug-in a VGA card. There is no need to
reset the jumpers.
2-8 User’s Guide
Page 27
Hardware Setup
Clearing the CMOS
You need to clear the CMOS if you forget your system password. To do
this, shut off the system power and short pins 2-3 of JP19 for a few seconds.
Then set the jumper to normal setting by shorting pins 1-2 with a jumper cap.
Enter Setup to specify a new password.
Normal Clear CMOS
JP19
User’s Guide 2-9
Page 28
Hardware Setup
Memory Configuration
The system memory is expandable to 128 MB by adding single in-line
memory modules (SIMMs). The four 72-pin SIMM sockets accommodate 1, 4-, 16- and 64-MB single-density SIMMs, and 2-, 8- and 32-MB doubledensity SIMMs. These SIMM sockets also accept both Fast Page type and
Extended Data Output (EDO) type DRAMs. The EDO feature extends the
data transfer cycle, thus improves memory performance. All SIMMs support
a DRAM speed of 70/80 ns or less.
The table below lists the SIMM types and their corresponding capacity.
SIMM Type Capacity
256 Kb x 32/36 1 MB
512 Kb x 32/36 2 MB
1 Mb x 32/36 4 MB
2 Mb x 32/36 8 MB
4 Mb x 32/36 16 MB
8 Mb x 32/36 32 MB
16 Mb x 32/36 64 MB
The SIMM sockets support 32-/64-bit DRAMs, therefore allowing you to
install one SIMM in one bank instead of two. However, you can install this
DRAM type only on SIMMs 2 and 4.
2-10 User’s Guide
Page 29
Hardware Setup
The following are the possible SIMM configurations. Notice that you must
install the same SIMMs in one bank.
Bank 0 Bank 1 Total
SIMM 1 SIMM 2 SIMM 3 SIMM 4 Memory
2 MB 2 MB 4 MB
2 MB 2 MB 2 MB 2 MB 8 MB
2 MB 2 MB 8 MB 8 MB 20 MB
2 MB 2 MB 16 MB 16 MB 36 MB
4 MB 4 MB 8 MB
4 MB 4 MB 4 MB 4 MB 16 MB
4 MB 4 MB 16 MB 16 MB 40 MB
8 MB 8 MB 16 MB
8 MB 8 MB 8 MB 8 MB 32 MB
8 MB 8 MB 16 MB 16 MB 48 MB
8 MB 8 MB 32 MB 32 MB 80 MB
16 MB 16 MB 32 MB
16 MB 16 MB 16 MB 16 MB 64 MB
32 MB 32 MB 64 MB
32 MB 32 MB 8 MB 8 MB 80 MB
32 MB 32 MB 16 MB 16 MB 96 MB
32 MB 32 MB 32 MB 32 MB 128 MB
64 MB 64 MB 128 MB
4 MB 4 MB
8 MB 8 MB
16 MB 16 MB
32 MB 32 MB
4 MB 4 MB
8 MB 8 MB
16MB 16 MB
32 MB 32 MB
User’s Guide 2-11
Page 30
Hardware Setup
Installing a SIMM
Observe the ESD precautions when installing
components.
Follow these steps to install a SIMM:
1. Slip a SIMM at a 45o angle into a socket with the component side
facing down. Always install SIMMs beginning with Bank 0.
Be careful when inserting or removing SIMMs.
Forcing a SIMM in or out of a socket can
damage the socket or the SIMM (or both).
2. Gently push the SIMM up until the pegs of the socket slip into the holes
on the SIMM and the holding clips lock the SIMM into a vertical
position.
The SIMM should be at a 90o angle when
installed.
2-12 User’s Guide
Page 31
Hardware Setup
Removing a SIMM
1. Press the holding clips on both sides of the SIMM outward to release it.
2. Press the SIMM downward to about a 45o angle.
3. Gently pull the SIMM out of the socket.
User’s Guide 2-13
Page 32
Hardware Setup
( Turbo Switch )
( Turbo LED )
( Turbo Switch )
( Turbo LED )
Connectors
Multifunction Connector
This 20-pin connector is marked JP24 on the system board. It supports a
number of system functions: LED, turbo, reset, keylock, and speaker.
Attach the front panel connectors to the corresponding pins as in the
illustration below.
Speaker Power LED Keylock
Speaker Power LED Keylock
Reset Turbo Switch Turbo LED
Break Switch Green Mode LEDReset
Some housings have a five-pin connector for the keylock and power LED.
See the following illustration.
Speaker Keylock and Power LED
Reset Turbo Switch Turbo LED
2-14 User’s Guide
Speaker Keylock & Power LED
Reset
Break Switch Green Mode LED
Page 33
Hardware Setup
Ground
Other housings may have a 12-pin connector. If your housing has this type
of connector, plug it into JP24 as shown in the following figure. Make sure
that the red wire of the connector connects to pin 11.
Ground
Reset
Res-VCC
Speaker
Break Switch
Turbo Switch
( Turbo Switch )
The AP55CS does not support the turbo
function. Therefore, we recommend that you
connect the turbo switch to JP17. Refer to the
Break/Suspend connector section for more
information.
Keylock
Ground
VCC
User’s Guide 2-15
Page 34
Hardware Setup
Keyboard Connector
The keyboard connector is a five-pin, AT-compatible connector marked J1
on the system board. The following figure shows how to connect the
keyboard.
Power Connector
A standard power supply has two cables with six wires each. Attach these
cables to the power connector on the board in such a way that all the black
wires are in the center. The power connector is marked as J2.
2-16 User’s Guide
Page 35
Hardware Setup
2-pin fan power connector (J2)
Fan Connector
The two-pin fan connector is marked J7 on the system board. To connect,
plug the connector to its corresponding pin as shown in the following figure.
+12V
GND
Gnd
Two-pin fan connector
VGA Connector
The VGA connector marked J3 onboard is different from the VGA
connectors that you normally find on other system boards. The board comes
with a cable that is designed to link the onboard VGA connector to the VGA
port on the housing. The following figure shows how to insert the cable into
the VGA connector and link it to the VGA port.
User’s Guide 2-17
Page 36
Hardware Setup
Break/Suspend Connector
The Break/Suspend connector is a two-pin connector labeled JP17 on the
system board. Pressing the break switch on the front bezel forces the system
to enter the suspend mode. Pressing any key on the keyboard returns the
system to normal mode.
The AP55CS does not support the turbo
function. Therefore, we recommend that you
connect the turbo switch to JP17.
Voltage Regulator Module (VRM) Connector (optional)
The optional VRM connector is designed to accommodate a voltage
regulator module to support future CPUs. This connector is marked CN5 on
the board. See the board layout figure in Chapter 1 for the exact location of
the connector.
Installation
The baby-AT size of the system board easily fits most housings. It has
mounting holes that conform to the standard system housing.
Some housings may differ slightly in design, requiring additional steps to
install the board. Read the documentation that comes with the housing.
2-18 User’s Guide
Page 37
Hardware Setup
Make sure that you have already installed the
system board components like the CPU and
memory, and have set the appropriate jumpers
before you proceed.
Installing the System Board
1. Open the system housing.
2. Use at least two screws that come with the housing to secure the board.
3. Attach the power supply cables to the power connector and the front
panel connectors to the multifunction connector. See the section
Connectors.
4. Install any additional components that you have not yet installed.
User’s Guide 2-19
Page 38
Hardware Setup
Installing Expansion Boards
Install expansion boards after you have installed the system board into the
housing.
Follow these steps to install an expansion board.
1. Remove the bracket opposite the slot that you want to use. Save the
cover for future use. Save the screw to secure the expansion board.
2. Remove the board from its protective packaging.
3. Gently insert the golden edge of the board into the slot until it fits.
Golden
edge
ISA Slot PCI Slot
4. Secure the board bracket with the screw.
2-20 User’s Guide
Golden edge
Page 39
Chapter
VGA 3
The AP55CS integrates a SiS6205 high-performance graphics and
video accelerator. It enhances the display capabilities of the system
with PCI bus through its three-in-one PCI true-color graphic function.
It also enables the system to deliver a high-quality full-motion video
from CD-ROM drives.
The SiS6205 utilizes the shared-memory buffer architecture. This
feature allows the display subsystem to share the system memory.
The following lists the features of the SiS6205 VGA chip:
• Enhanced 64-bit BITBLT graphics engine
• Supports 32-bit PCI rev. 2.0
• Complies with DDC1 and DDC2B specifications
• Multi-format Video for Windows support such as YUV411,
YUV422, ARGB8888, RGB888, RGB656, RGB555
• Compatible with Microsoft Video for Windows
• Compatible with Real-Magic MPEG API (for interactive title)
• DCI drivers support
• 135-MHz pixel clock
• Super high-resolution graphics mode
• 640 x 480, 256/32K/64K/16M colors (NI)
• 800 x 600, 16/256/32K/64K/16M colors (NI)
• 1024 x 768, 16/256/32K/64K/16M colors (NI)
• 1280 x 1024, 16/256 colors (NI), 32K/64K colors (I)
• 2048 x 2048 maximum virtual screen
• 75-Hz maximum refresh rate
User’s Guide 3-1
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VGA
Drivers and Utilities
Getting Started
See to it that you have the following before you install the drivers:
• DOS 5.0, 6.0, 6.2 (or higher version) or OS/2 2.0, 2.1 (or higher
version)
• VGA analog monitor
We recommend that you create backup copies of the original driver
diskettes. Store the originals and work from the backups. If the copy
gets damaged, use the original to create a new copy. Label the
working diskettes properly.
Use the DISKCOPY command to create
backup diskettes. Refer to your MS-DOS
manual for instructions.
Supported Applications
The board comes with a set of display drivers for the following
applications:
• 3D Studio v3.0
• AutoCAD/386 Release 11, 12
• AutoShade/386 v2.0
• GEM 3.0 /Ventura 2.0
• Lotus 1-2-3/Symphony v2.x
• Microsoft Windows 3.1
3-2 User’s Guide
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VGA
• Microsoft Windows NT v3.1 & 3.5
• Microsoft Windows 95
• OrCAD (SDT/VST/PCB) Rel. 4
• OS/2 Presentation Manager 3.0
• P-CAD v6.06
• VersaCAD/386 v2.1
• WordPerfect 5.x & 6.0
Driver Diskettes
The AP55CS comes with a set of display drivers contained in five
1.44-MB diskettes. The driver files contained in each diskette are as
follows:
Diskette 1 Application Program Drivers
SISTAG Disk Tag file for NT 3.1 and NT 3.5
DISK.TXT ASCII text file describing the diskette
contents
UPDATE.TXT ASCII text file containing the driver release
notes
INSTDRV.EXE Unpack and copy program
ADI42 <DIR> Contains the AutoCAD, AutoShade, 3D
Studio driver files
GEMDRV <DIR> Contains the GEM/Ventura driver files
LOTUS <DIR> Contains Lotus 1-2-3 driver files
ORCAD4 <DIR> Contains the OrCAD driver files
User’s Guide 3-3
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VGA
PCAD6 <DIR> Contains the PCAD driver files
UTILITY <DIR> Contains the DOS utilities
VCAD <DIR> Contains the VersaCAD driver files
WP51 <DIR> Contains the WordPerfect driver files
ET24 <DIR> Contains ETen Chinese System display
driver (ETDSPDRV.COM) ver 1.16B01 to
support the SiS VGA
WINNT31 <DIR> Contains the Windows NT 3.1 driver files
WINNT35 <DIR> Contains the Windows NT 3.5 driver files
MANUAL <DIR> Contains the compressed file of the SiS 6205
user’s manual. The file is in Winword 2.0
format.
Diskette 2 Windows 95 and OS/2 Warp Drivers
Win95 <DIR> Contains the Windows 95 Beta 3 driver files
OS2WARP <DIR>Contains the IBM OS/2 3.0 (Warp) driver
files
Diskette 3 Windows 3.1 and DCI Drivers
Root Files SiS Windows 3.1 Driver Setup programs
SGVA <DIR> Contains Microsoft Windows 3.1 driver files
(in compressed format, default support -
Windows 3.1 in U.S. version)
DCI <DIR> Contains SiS6205 DCI driver files
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VGA
Diskette 4 Microsoft Video for Windows 1.1D Runtime
Programs
Root Files Microsoft Video for Windows 1.1D Runtime
programs
Diskette 5 OS/2 3.0 Driver
OS23OD <DIR> Contains the Double Bytes (Chinese,
Japanese, Korean, etc.), IBM OS/2 3.0
(Warp) driver files
IDEDRV <DIR> Contains the SiS IDE driver files
Installing the Drivers
To install the drivers, simply insert Diskette 1 into the driver diskette
and type:
X:\INSTDRV e
where X is the driver letter containing Diskette 1. Follow the screen
instructions to complete the installation.
User’s Guide 3-5
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VGA
Standard Display Modes
The table below lists the supported standard display modes.
MODE TYPE DISPLAY
SIZE
0 Text 320 x 200 16 70 31.5K 25.1M
0* Text 320 x 250 16 70 31.5K 25.1M
0+ Text 360 x 400 16 70 31.5K 28.3M
1 Text 320 x 200 16 70 31.5K 25.1M
1* Text 320 x 250 16 70 31.5K 25.1M
1+ Text 360 x 400 16 70 31.5K 28.3M
2 Text 640 x 200 16 70 31.5K 25.1M
2* Text 640 x 250 16 70 31.5K 25.1M
2+ Text 720 x 400 16 70 31.5K 28.3M
3 Text 640 x 200 16 70 31.5K 25.1M
3* Text 640 x 250 16 70 31.5K 25.1M
3+ Text 720 x 400 16 70 31.5K 28.3M
4 Graphics 320 x 200 4 70 31.5K 25.1M
5 Graphics 320 x 200 4 70 31.5K 25.1M
6 Graphics 640 x 200 2 70 31.5K 25.1M
7 Text 720 x 350 4 70 31.5K 28.3M
7+ Text 720 x 400 4 70 31.5K 28.3M
0D Graphics 320 x 200 16 70 31.5K 25.1M
0E Graphics 640 x 200 16 70 31.5K 25.1M
0F Graphics 640 x 350 2 70 31.5K 25.1M
10 Graphics 640 x 350 16 70 31.5K 25.1M
11 Graphics 640 x 480 2 60 31.5K 25.1M
12 Graphics 640 x 480 16 60 31.5K 25.1M
13 Graphics 320 x 200 256 70 31.5K 25.1M
COLORS
SHADES
FRAME
RATE
H-SYNCH VIDEO
FREQ.
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VGA
Enhanced Video Modes
The table below lists the enhanced video modes supported by the
SiS6205 PCI graphics and video accelerator.
MODE TYPE DISPLAY
SIZE
22 Text 1056 x 352 16 70 30.5K 40.0M 1MB
23 Text 1056 x 350 16 70 30.5K 40.0M 1MB
24 Text 1056 x 364 16 70 30.5K 40.0M 1MB
25 Graphics 640 x 480 16 60 31.5K 25.1M 1MB
26 Text 720 x 480 16 60 31.5K 25.1M 1MB
29 Graphics 800 x 600 16 56 35.1K 30.0M 1MB
29* Graphics 800 x 600 16 60 37.9K 40.0M 1MB
29+ Graphics 800 x 600 16 72 48.0K 50.0M 1MB
29# Graphics 800 x 600 16 75 46.8K 50.0M 1MB
2A Text 800 x 600 16 56 35.1K 36.0M 1MB
2D Graphics 640 x 350 256 70 31.5K 25.1M 1MB
2E Graphics 640 x 480 256 60 31.5K 25.1M 1MB
2E* Graphics 640 x 480 256 72 37.9K 31.5M 1MB
2E+ Graphics 640 x 480 256 75 37.5K 31.5M 1MB
2F Graphics 640 x 400 256 70 31.5K 25.1M 1MB
30 Graphics 800 x 600 256 56 35.1K 36.0M 1MB
30* Graphics 800 x 600 256 60 37.9K 40.0M 1MB
30+ Graphics 800 x 600 256 72 48.0K 50.0M 1MB
30# Graphics 800 x 600 256 75 46.8K. 50.0M 1MB
37i Graphics 1024 x 768 16 87 35.5K 44.9M 1MB
37n Graphics 1024 x 768 16 60 48.4K 65.0M 1MB
37n+ Graphics 1024 x 768 16 70 56.5K 75.0M 1MB
37n# Graphics 1024 x 768 16 75 60.2K 80.0M 1MB
38i Graphics 1024 x 768 256 87 35.5K 44.9M 1MB
38n Graphics 1024 x 768 256 60 48.4K 65.0M 1MB
38n+ Graphics 1024 x 768 256 70 56.5K 75.0M 1MB
38n# Graphics 1024 x 768 256 75 60.2K 80.0M 1MB
39i Graphics 1280 x 1024 16 89 48.8K 80.0M 1MB
39n Graphics 1280 x 1024 16 60 65.0K 110.0M 1MB
3Ai Graphics 1280 x 1024 256 89 48.8K 80.0M 2MB
3An Graphics 1280 x 1024 256 60 65.0K 110.0M 2MB
40 Graphics 320 x 200 32K 70 31.5K 25.1M 1MB
41 Graphics 320 x 200 64K 70 31.5K 25.1M 1MB
42 Graphics 320 x 200 16.8M 70 31.5K 25.1M 1MB
43 Graphics 640 x 480 32K 60 31.5K 25.1M 1MB
43* Graphics 640 x 480 32K 72 37.9K 31.5M 1MB
43+ Graphics 640 x 480 32K 75 37.5K 31.5M 1MB
COLORS
SHADES
FRAME
RATE
H-SYNCH VIDEO
FREQ.
VGA
Memory
Size
“i” interlaced mode
“N” non-interlaced mode
User’s Guide 3-7
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VGA
Enhanced Video Modes (continued)
MODE TYPE DISPLAY
SIZE
44 Graphics 640 x 480 64K 60 31.5K 25.1M 1 MB
44* Graphics 640 x 480 64K 72 37.9K 31.5M 1MB
44+ Graphics 640 x 480 64K 75 37.5K 31.5M 1MB
45 Graphics 640 x 480 16.8M 60 31.5K 25.1M 1MB
45* Graphics 640 x 480 16.8M 72 37.9K 31.5M 2MB
45+ Graphics 640 x 480 16.8M 75 37.5K 31.5M 2MB
46 Graphics 800 x 600 32K 56 35.1K 36.0M 1MB
46* Graphics 800 x 600 32K 60 37.9K 40.0M 1MB
46+ Graphics 800 x 600 32K 72 48.0K 50.0M 2MB
46# Graphics 800 x 600 32K 75 46.8K 50.0M 2MB
47 Graphics 800 x 600 64K 56 35.1K 36.0M 1MB
47* Graphics 800 x 600 64K 60 37.9K 40.0M 1MB
47+ Graphics 800 x 600 64K 72 48.0K 50.0M 2MB
47# Graphics 800 x 600 64K 75 46.8K 50.0M 2MB
48 Graphics 800 x 600 16.8M 56 35.1K 36.0M 2MB
48* Graphics 800 x 600 16.8M 60 37.9K 40.0M 2MB
48+ Graphics 800 x 600 16.8M 72 48.0K 50.0M 2MB
48# Graphics 800 x 600 16.8M 75 46.8K 50.0M 2MB
49i Graphics 1024 x 768 32K 87 35.5K 44.9M 2MB
49n Graphics 1024 x 768 32K 60 48.4K 65.0M 2MB
49n+ Graphics 1024 x 768 32K 72 56.5K 75.0M 2MB
49n# Graphics 1024 x 768 32K 75 60.2K 80.0M 2MB
4Ai Graphics 1024 x 768 64K 87 35.5K 44.9M 2MB
4An Graphics 1024 x 768 64K 60 48.4K 65.0M 2MB
4An+ Graphics 1024 x 768 64K 72 56.5K 75.0M 2MB
4An# Graphics 1024 x 768 64K 75 60.2K 80.0M 2MB
COLORS
SHADES
FRAME
RATE
H-SYNCH VIDEO
FREQ.
Memory
“i” interlaced mode
“N” non-interlaced mode
VGA
Size
The 45*, 45+, 46+, 46#, 47+ and 47# modes
are not supported in the 1-MB DRAM
configuration.
3-8 User’s Guide
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VGA
MPEG Function
The onboard VGA chip also supports the MPEG video playback
function. The following MPEG group icons appear in your VGA
program group:
However, you need to obtain and install your own Xing MPEG drivers
to enable the function. The MPEG drivers are not included in the
driver diskettes that come with the system board.
User’s Guide 3-9
Page 48
Chapter
AMI BIOS 4
AMI BIOS Setup Main Menu
The AMI BIOS Setup Main Menu appears below. Press c to enter
the system menu.
The AMI BIOS is in Windows form. You can use either the keyboard
or a mouse to move between the items. To select among the Setup
groups, use v to highlight the selected group or simply click on the
icon of the selected Setup menu.
To select among the options, you can either use the arrow keys to
move the highlight bar or simply click on the icon of the desired
option.
After selecting, press e or double-click on the icon to open the menu.
User’s Guide 4-1
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AMI BIOS
Standard CMOS Setup
Highlight Setup using v or simply click on the Setup icon. Select
Standard to input configuration values such as the date, time, and
disk types. The Standard CMOS Setup pop-up window appears
below:
Date/Time
To set the date and time, highlight Date/Time and press e or
double-click on the Date/Time icon. The following screen appears:
4-2 User’s Guide
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AMI BIOS
Use the arrow keys to move among the items. Press the + and -
keys or click the + and - icons to set the current date and time. Close
the window by pressing e or double-clicking the Control menu box in
the upper-left corner of the window.
Floppy Drives A and B
To configure the floppy drive, select Floppy A . The following
values appear on the screen:
After selecting the proper setting, press e or double-click the Control
menu box to close the window.
Select Floppy B and follow the same procedure to configure the
second floppy drive, if present.
User’s Guide 4-3
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AMI BIOS
Hard Disk Drives
Select Master Hard Disk to configure the first hard disk. The
following values appear on the screen:
If you cannot find your hard disk drive type on the list, select User
and enter the disk parameters. You can also select Utility
Setup . This automatically configures your hard disk. Refer to the
section Utility Setup for more information.
Select ESDI or SCSI depending the device installed.
If you have two hard disks installed, select Slave Disk and follow
the same procedure to configure the second hard disk.
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AMI BIOS
Advanced CMOS Setup
The window below appears if you select the Advanced option.
The screen above does not show all the parameters of the Advanced
Configuration menu. Use w or y to highlight the desired parameter.
Press } to view the rest of the parameters. The following screens
appear:
User’s Guide 4-5
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AMI BIOS
4-6 User’s Guide
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AMI BIOS
Typematic Rate (Chars./Sec.)
This parameter determines the typematic rate. The typematic rate
settings are 15, 20, 30 and Disabled. The default setting is 30.
Select Disabled to disregard the rate setting.
User’s Guide 4-7
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AMI BIOS
System Keyboard
Set this parameter to Present if there is a keyboard connected to
the system. However, some servers may not have keyboards.
Select Absent if there is no keyboard present.
Primary Display
This function detects the type of VGA in use. The settings are
VGA/EGA, CGA 40 x 25, CGA 80 x 25, Mono, and Absent. The
default setting is VGA/EGA .
Above 1 MB Memory Test
This parameter allows your system to check all available memory.
Therefore, setting this parameter to Enabled slows down the
power-on self-test. The default setting is Disabled .
Memory Test Tick Sound
Enabling this parameter lets you hear the tick sound during the
memory test. Disable the parameter to bypass the function. The
default setting is Enabled .
Parity Error Check
You must set this parameter to Enabled if you install SIMMs with
parity in your system. Disable the parameter if the SIMMs in use are
without parity. Since the DRAM can still operate even without using
the parity scheme for SIMMs with parity, this function is normally set
to Disabled .
4-8 User’s Guide
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AMI BIOS
Hit “Del” Message Display
This option lets you enable or disable the Hit <Del> if you want Setup
message from appearing when the system boots. The default setting
is Enabled .
Extended BIOS RAM Area
This function allows you to relocate the BIOS from ROM to RAM.
Relocating to RAM enhances system performance as information
access is faster than ROM. The parameter settings are 0:300 and
DOS 1K. The default address is 0:300.
Wait for F1 If Any Error
If this option is enabled, the BIOS waits for the end user to press l
before continuing. If this option is disabled, the BIOS continues the
boot process without waiting for l to be pressed. The default setting
is Enabled .
System Boot-up Num Lock
Setting this parameter to On enables the numeric function of the
numeric keypad. Set this parameter to Off to disregard the
function. Disabling the numeric function allows you to use the
numeric keypad for cursor control. The default setting is On.
Floppy Drive Seek at Boot
When enabled, the BIOS detects whether there is a floppy disk drive
installed. Disable the parameter to bypass the function. The default
setting is Enabled.
User’s Guide 4-9
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AMI BIOS
Floppy Drive Swapping
This parameter allows you to swap floppy drives. For example, if you
have two floppy drives (A and B), you can assign the first drive as
drive B and the second drive as drive A or vice-versa. Disable the
parameter to bypass the function. The default is Disabled.
System Boot-up Sequence
The settings are C:, A: and A:, C: to specify the system search
sequence. The default setting is A:,C:.
Password Checking
The settings are Setup and Always . The Setup setting allows the
system to boot and use the password only to protect the Setup Utility
Configuration settings from being tampered with. The Always setting
requires you to enter the password everytime you boot the system.
The default setting is Setup .
Cache Memory
Internal Cache
This function lets you enable or disable the internal cache. The
default setting is Enabled .
External Cache
This parameter lets you enable the external cache and select the
supported cache mode. The available selections are Write back,
Write through and Disabled. The default setting is Write back .
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AMI BIOS
System BIOS Shadow Cacheable
Enabling this parameter allows you to change the system BIOS
location from ROM to RAM. When the system boots, the BIOS
routines are copied into the RAM area. This enhances system
performance as information access is faster in RAM than in ROM.
Disabling the parameter prevents the system BIOS from being
cached. The default setting for this parameter is Enabled.
Adapter ROM BIOS Cacheable
Similar to the System BIOS Cacheable and Video BIOS Cacheable
parameters, enabling this parameter also enhances system
performance. This allows you to relocate BIOS routines to RAM, and
therefore speeds up information access. The default setting is
Disabled .
Shadow
Video Shadow C000, 32 K
This address is for shadowing video ROMs. Select Enabled to
assign the address for shadowing expansion video card with ROM.
Select Disabled to assign them for cache. The default setting is
Enabled.
Shadow C800 ~ DC00, 16 K
These addresses are for shadowing other expansion card ROMs.
The default setting for these areas is Disabled . Set the addresses
to Enabled if you want to use them for shadowing expansion cards
with ROM.
User’s Guide 4-11
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AMI BIOS
The F000 and E000 addresses are
exclusively shadowed for BIOS.
IDE
IDE Boot-up Detection
There are cases wherein the HDD parameters that you entered and
those detected by the auto-detection function are mismatched. This
causes the system not to boot. If this happens, we recommend that
you set this parameter to Disabled to bypass the auto-detection
function. The default setting is Disabled .
Onboard PCI IDE
You may enable or disable the onboard PCI IDE through this
parameter. The available settings are Disabled, Both, Primary and
Secondary. Select Primary if your onboard PCI IDE functions as
the primary controller. Select Secondary if it functions as a
secondary controller. Select Both if it functions both as a primary
and secondary controller. Select Disabled to disregard the
function. The default setting is Both .
IDE PREFETCH
Enabling this parameter increases the IDE hard disk data transfer
rate to further improve system performance. However, not all hard
disks support this feature. Therefore, the default setting for this
parameter is Disabled .
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AMI BIOS
Offboard (Add-on) PCI IDE
The onboard PCI slots allow you to install expansion cards into your
system. If you install a PCI add-on card, you need to specify the slot
that it occupies. The selections are Slot 1, Slot 2, Slot 3 and Absent.
If the PCI slots are vacant, the parameter is automatically set to
Absent .
PRIMARY INT# LINE
This parameter lets you assign an INT for the IDE device connected
to your primary IDE connector. The settings are INT A, INT B, INT
C, INT D, Absent and Not Used. If you do not have a PCI-IDE card
installed in your system and your Offboard (Add-on) PCI IDE
parameter is set to Absent, this parameter becomes nonconfigurable.
SECONDARY INT# LINE
This parameter lets you assign an INT for the IDE device connected
to your secondary IDE connector. The settings are INT A, INT B, INT
C, INT D, Absent and Not Used. If you do not have a PCI-IDE card
installed in your system and your Offboard (Add-on) PCI IDE
parameter is set to Absent, this parameter becomes nonconfigurable.
User’s Guide 4-13
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AMI BIOS
Primary Controller 32-bit Transfer
Enabling this function improves disk performance of the PCI IDE
functioning as primary controller by increasing the data transfer rate
from 16 bit to 32 bit. However, if you select the add-on card to
function as the primary controller, you must check your add-on card
manual before enabling the parameter. The default setting is
Disabled .
Primary Master
ADVANCED PIO
This parameter lets you set the PIO mode that the master drive
connected to the primary IDE connector supports. The selections are
from Mode 0 to Mode 4, Auto and Disabled. Set this parameter
either by entering the PIO mode manually or selecting Auto to
automatically detect the supported PIO mode. Disable the parameter
to bypass the feature. The default is Auto.
BLOCK MODE
Enabling this feature enhances the performance of the disk
functioning as primary master by allowing the data transfer in block
(multiple sectors). This increases the data transfer rate to 256
bytes/cycle. Disable the parameter to disregard the feature. The
default setting is Disabled .
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AMI BIOS
LBA MODE
This feature allows you to use a hard disk with a capacity of higher
than 528 MB. This is made possible through the Logical Block
Address (LBA) mode translation. Enable the parameter if the hard
disk functioning as primary master supports this feature.
Primary Slave
ADVANCED PIO
This parameter lets you set the PIO mode that your onboard PCI IDE
functioning as primary slave supports. The selections are from Mode
0 to Mode 4, Auto and Disabled. Set this parameter either by
entering the PIO mode manually or selecting Auto to automatically
detect the supported PIO mode. Disable the parameter to bypass the
feature. The default setting is Auto.
BLOCK MODE
Enabling this feature enhances the performance of the disk
functioning as primary slave by allowing the data transfer in block
(multiple sectors). This increases the data transfer rate to 256
bytes/cycle. Disable the parameter to disregard the feature. The
default setting is Disabled .
LBA MODE
This feature allows you to use a hard disk with a capacity of higher
than 528 MB. This is made possible through the Logical Block
Address (LBA) mode translation. Enable the parameter if the hard
disk functioning as primary slave supports this feature.
User’s Guide 4-15
Page 63
AMI BIOS
Secondary Controller Hard Disks
You may install additional hard disk(s) in your system. This
parameter lets you set the number of hard disks that can function as
secondary controller. The allowable maximum number is 2.
Secondary Controller 32-bit Transfer
Enabling this function improves disk performance of the PCI IDE
functioning as secondary controller by increasing the data transfer
rate from 16 bit to 32 bit. However, if you select the add-on card to
function as the primary controller, you must check your add-on card
manual before enabling the parameter. The default setting is
Disabled .
Secondary Master
ADVANCED PIO
This parameter lets you set the PIO mode that your onboard PCI IDE
functioning as secondary master supports. The selections are from
Mode 0 to Mode 4, Auto and Disabled. Set this parameter either by
entering the PIO mode manually or selecting Auto to automatically
detect the supported PIO mode. Disable the parameter to bypass the
feature. The default setting is Auto.
BLOCK MODE
Enabling this feature enhances the performance of the disk
functioning as secondary master by allowing the data transfer in
block (multiple sectors). This increases the data transfer rate to 256
bytes/cycle. Disable the parameter to disregard the feature. The
default setting is Disabled.
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AMI BIOS
LBA MODE
This feature allows you to use a hard disk with a capacity of higher
than 528 MB. This is made possible through the Logical Block
Address (LBA) mode translation. Enable the parameter if the hard
disk functioning as secondary master supports this feature.
Secondary Slave
ADVANCED PIO
This parameter lets you set the PIO mode that your onboard PCI IDE
functioning as secondary slave supports. The selections are from
Mode 0 to Mode 4, Auto and Disabled. Set this parameter either by
entering the PIO mode manually or selecting Auto to automatically
detect the supported PIO mode. Disable the parameter to bypass the
feature. The default setting is Auto.
BLOCK MODE
Enabling this feature enhances the performance of the disk
functioning as secondary slave by allowing the data transfer in block
(multiple sectors). This increases the data transfer rate to 256
bytes/cycle. Disable the parameter to disregard the feature. The
default setting is Disabled.
LBA MODE
This feature allows you to use a hard disk with a capacity of higher
than 528 MB. This is made possible through the Logical Block
Address (LBA) mode translation. Enable the parameter if the hard
disk functioning as secondary slave supports this feature.
User’s Guide 4-17
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AMI BIOS
1st Priority IRQ for PCI/PnP
This parameter lets you set the first available IRQ that can be
assigned for PCI/PnP function to prevent IRQ conflicts. The IRQ
selections are IRQ 6, 7, 9, 10, 11, 12, 13, 14 and 15. The default
setting is IRQ 11.
2nd IRQ
This parameter lets you set the second available IRQ that can be
assigned to PCI/PnP function to prevent IRQ conflicts. The IRQ
selections are IRQ 6, 7, 9, 10, 11, 12, 13, 14 and 15. The default is
IRQ 10.
3rd IRQ
This parameter lets you set the third available IRQ that can be
assigned to PCI/PnP function to prevent IRQ conflicts. The IRQ
selections are IRQ 6, 7, 9, 10, 11, 12, 13, 14 and 15. The default is
IRQ 9.
ISA Memory Block Base
The BIOS automatically allocates memory for PnP cards. However,
for non-PnP cards or ISA legacy cards, you need to command the
BIOS to allocate memory for these cards. This parameter enables
you to set the memory area that you want to reserve. The available
settings are C800, CC00, D000, D400, D800, DC00 and Disabled.
The default setting is Disabled.
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AMI BIOS
ISA Memory Block Size
If you enable the ISA Memory Block Base parameter, then you need
to specify the memory size that you want to reserve for your ISA
cards. This parameter allows you to set the memory size for ISA
card functions. The selections are 8 KB, 16 KB, 32 KB and 64 KB.
Boot to PnP Operating System
This parameter is normally set to No. Set it to Yes only if you have
Windows 95 installed in your system.
Chipset Setup Mode
This function allows you to change the Chipset Setup DRAM control
parameters according to the end-user type. The available settings
are End-user and Engineer. We recommend that you select End-
user. See the following section for more details on Chipset
Features Setup.
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AMI BIOS
Chipset Features Setup
The Chipset Features Setup controls the board's chipset settings.
The controls for this menu are the same as for the previous screen.
The Chipset Setup DRAM control parameters differ depending on the
Chipset Setup Mode setting in the Advanced CMOS Setup. The
following screen appears if you select the Chipset option from the
Setup menu and if the Chipset Setup Mode parameter setting is
End-user.
The above screen does not show all the parameters of the Chipset
Setup menu. Use w or y to highlight the desired parameter. Press }
to view the rest of the parameters and the following screens appear:
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AMI BIOS
User’s Guide 4-21
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AMI BIOS
The following screens appear if your Chipset Setup Mode parameter
setting is Engineer . Take note of the new parameters.
This manual describes only the
parameters found in the Chipset Setup
screen for the End-user setting.
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AMI BIOS
VGA Shared Memory Size
This function lets you set the memory size to reserve for VGA
function. The settings are 1 MB and 2 MB. Select 2 MB if you want
to support higher resolution. See the Enhanced Video Modes table in
Chapter 3 for the required VGA memory size for each supported
resolution. The default setting for this parameter is 1 MB .
VGA Frequency
You can set the frequency that your VGA supports by pressing + or -.
The range is from 40 MHz to 70 MHz. The default setting is 50
MHz.
DRAM
Memory Parity Check
This option lets you enable or disable the optional parity DRAM. Set
this parameter to Disabled if the SIMMs in use is without parity.
The default is Disabled .
Memory Speed (DRAM)
This option allows you to set the memory speed that your DRAM
supports. The available settings for this parameter are 60 ns and 70
ns. The default is 70 ns.
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AMI BIOS
SRAM
Cache Tag Size
This parameter lets you set the tag size that your cache supports.
The selections are 7 bits and 8 bits. The default is 8 bits .
Cache and Memory
Noncacheable Block (1 and 2)
This feature allows you to allocate the memory to either DRAM or
PCI bus. The options are DRAM, PCI bus and Disabled. Select
DRAM to reserve the total memory area for system use. Select PCI
bus to reserve the memory area for I/O or add-on card use. Select
Disabled to disregard the feature.
BLOCK SIZE
This parameter lets you set the memory size reserved to either
system use or add-on card use. The available settings are 64 KB,
128 KB, 256 KB, 572 KB, 1 MB, 2 MB, 4 MB, and 8 MB.
BLOCK BASE ADDRESS
This parameter lets you set the starting address where you want to
relocate the memory. The memory selections depend on the
selected block size. For example, if the Block Size is set to 128 KB,
the memory selections are in multiples of 128 i.e., 0 KB, 128 KB, 256
KB, etc. You can move from one selection to another by pressing +
or -.
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AMI BIOS
ISA Memory Hole at 15-16 MB
To prevent memory address conflicts between the system and
expansion boards, reserve this memory range for the use of either
the system or an expansion board. Disable the parameter to
disregard the option.
ISA Bus Clock and Timing
ISA Bus Clock
This parameter allows you to set the ISA bus clock that your board
supports. The selections are 7.159 MHz, PCICLK/4 and PCICLK/3.
The default setting is 7.159 MHz .
16-bit I/O Cycle Recovery Time
This parameter allows you to set the response time of the 16-bit I/O
devices connected to your system. The selection ranges from 2
BUSCLK to 5 BUSCLK. The default setting is 4 BUSCLK .
8-bit I/O Cycle Recovery Time
This parameter allows you to set the response time of the 8-bit I/O
devices connected to your system. The available settings are 3
BUSCLK, 4 BUSCLK, 5 BUSCLK and 8 BUSCLK. The default is 5
BUSCLK.
16-bit I/O Wait States
This parameter lets you set the wait state of the 16-bit I/O devices
connected to your system. The settings are 0 and 1. The default
setting is 1.
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AMI BIOS
PCI Timing
CPU-to-PCI Post Write
Enable this parameter to control the posting of the CPU-to-memory
write data in the posting buffers. Disable the parameter to deactivate
the buffering function. The default is Enabled .
CPU-to-PCI Burst Write
Enabling this parameter allows the translation of the host cycles into
memory-burst cycles and controls the memory-burst-write cycles.
Disabling the function deactivates the memory-burst writes. The
default is Enabled .
Max. Burst Range in PCI Master
Increasing the burst range improves system performance. However,
the burst range varies depending on the SIMM configuration type that
the system supports.
The available settings for this parameter are 256 KB, 512 KB, 1 MB,
2 MB and 4 MB. Select 4 MB if you want to install SIMMs in pairs.
Select 2 MB for single-module support. The default setting is 2 MB.
See the section Memory Configurations in
Chapter 2 for the list of SIMM
configurations supported by the system
board and for detailed information on how
to install a SIMM.
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AMI BIOS
Power Management Setup
To take advantage of the power management features, select
Power Management from the Setup menu. To select, highlight
Power Mgmt and press e or double-click on the Power
Management icon. The following screen appears:
The screen above does not show all the parameters of the Power
Management Setup menu. Use w or y to highlight the desired
parameter. Press } to view the rest of the parameters. The following
screens appear:
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AMI BIOS
Power Management/APM
Set this parameter to Enabled to take advantage of the power-
saving feature. Disable the parameter to bypass the feature.
Standby Timeout
This function lets you set when to put the system into standby mode.
In standby mode, the CPU clock slows down. Any event detected
returns the system to full power. The settings are 10 sec, 30 sec, 1
min, 5 min, 10 min, 20 min, 30 min and Disabled.
Suspend Timeout
This function lets you set when to put the system into suspend mode.
In suspend mode, the CPU clock stops. Any event detected returns
the system to full power. The settings are 10 sec, 30 sec, 1 min, 5
min, 10 min, 20 min, 30 min and Disabled.
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AMI BIOS
Standby Mode Clock Speed
When the system enters the standby mode, the CPU clock starts to
slow down. The parameter lets you set the clock speed in standby
mode. The settings are Clk/4, Clk/8, Clk/12 and Clk/16. The default
setting is Clk/16 .
Green PC Monitor
Set this option to Present if the monitor in use is a green PC
monitor. Otherwise, set this to Absent .
Green PC Monitor State
This function lets you set the status of the green PC monitor once the
system enters the power-saving mode. The options are Blank,
Standby, Suspend and Off. The default is Blank .
Video Power-down Mode
This option allows you to set the mode when to power down your
video monitor. The video monitor returns to full power once the
system resumes to normal mode. The selections are Standby,
Suspend and Disabled. The default setting is Standby.
IDE Power-down Mode
This option lets you set the mode when to “spin down your IDE hard
disk. The disk returns to full speed once the system resumes to
normal mode. The available settings are Standby, Suspend and
Disabled. The default setting is Suspend.
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AMI BIOS
Video Access
Set this option to Monitor if you want to check the video activities.
Any video activity detected resumes the system to normal mode.
Select Ignore to bypass video activities during power-saving
mode.
IDE Hard Disks
Set this option to Monitor if you want to check the IDE hard disk
activities. Any IDE hard disk activity detected resumes the system to
normal mode. Select Ignore to bypass the function during power-
saving mode.
Serial Ports
Set this option to Monitor if you want to check the serial port
activities. Any serial port activity detected resumes the system to
normal mode. Select Ignore to bypass the function during power-
saving mode.
Parallel Ports
Set this option to Monitor if you want to check the parallel port
activities. Any parallel port activity detected resumes the system to
normal mode. Select Ignore to bypass the function during power-
saving mode.
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AMI BIOS
Monitor I/O Port
Set this option to Monitor if you want to check the I/O port
activities. Any I/O port activity detected resumes the system to
normal mode. Select Ignore to bypass the function during power-
saving mode.
Size -- Number of Ports
This parameter is configurable only if the Monitor I/O Port is set to
Monitor . This allows you to set the I/O address range to monitor.
The options are 1, 2, 4, 8, 16, 32, 64, 128, and Disabled.
Base -- First Port (in Hex)
Similar to the Size -- Number of Ports option, this parameter is
configurable only if the Monitor I/O Port is set to Monitor. This
parameter lets you set the base address of the I/O address range that
you want to monitor. To set, simply click the + and - icons until you
find the desired address.
To determine the I/O address supported
by the I/O card, refer to the card manual.
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AMI BIOS
IRQ 3, IRQ 4, IRQ 5, IRQ 7, IRQ 9, IRQ 10, IRQ 11, IRQ
14 and IRQ 15 Activities
These options let you monitor the IRQ activities. Set these
parameters to Monitor to check IRQ activities. Any IRQ activity
detected resumes the system to normal mode. Select the
parameters that you want to bypass to Ignore to disregard its
activities during power-saving mode.
You must enable at least one IRQ activity.
Otherwise, the system stays in suspend
mode.
Peripheral Setup
This screen appears if you select Peripherals or double-click on
the Peripheral Setup icon from the Setup menu. The Peripheral
Setup screen allows you to set up your system peripherals.
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AMI BIOS
Programming Mode
The settings for this option are Auto and Manual. The Manual setting
allows you to set up the screen items manually. The Auto setting
sets up all the items automatically except for the Parallel Port Mode
parameter. The default is Auto.
Onboard FDC
Enabling this function allows you to use the onboard floppy disk
controller (FDC). The default setting is Enabled .
Serial Port 1
This parameter allows you to set the base address of serial port 1.
The available settings are 3F8H, 2F8H, 3E8H, 2E8H and Disabled.
Serial Port 2
This parameter allows you to set the base address of serial port 2.
The available settings are 3F8H, 2F8H, 3E8H, 2E8H and Disabled.
Parallel Port
This parameter allows you to set the base address of the parallel
port. The available settings are 3BCH, 378H, 278H and Disabled.
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AMI BIOS
IRQ Active
This option specifies if the parallel and serial port IRQs are active
high or active low. The settings are High and Low. The default is
High.
Parallel Port Mode
This option lets you set the parallel port mode. The settings are
Normal or Extended. The default is Normal.
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AMI BIOS
Utility Setup
IDE Setup
This function allows your system to automatically configure your IDE
hard disk(s). This screen appears if you select IDE Setup .
After a few seconds, the screen below appears showing your disk(s)
parameters. Select Yes to accept the values.
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AMI BIOS
Color Set
This pop-up window appears if you select Color Set from the
Utility Setup menu.
Color Set lets you select the background color of your Setup window.
The selections are LCD, Army, Pastel, and Sky.
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AMI BIOS
Default Setup
Select this option to automatically set your system configuration
parameters. To select, highlight Default and press e.
Original
This option loads the values that you saved before shutting off the
system. The following prompt appears if you choose Original
from the Default Setup menu. Select Yes to load the original
values.
Optimal
Choose this option and the BIOS configures the system using the
best-case values to optimize system performance. However, these
values may not be applicable to your system. If your system does
not boot after choosing this setting, reconfigure it using the Fail-safe
settings. Refer to the following section.
The screen below appears if you choose Optimal from the Default
Setup menu. Select Yes to load the optimum values.
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AMI BIOS
Fail-safe
Choose this option and the BIOS automatically configures the system
using the most stable settings. These settings are not necessarily the
best settings for system performance, but safe and stable enough to
guarantee you that your system will boot. This is useful if you are
having problems with your current system configuration and need to
determine the cause.
A prompt appears if you choose Fail-safe from the Default
Setup menu. Select Yes to load the fail-safe values.
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AMI BIOS
Security Setup
Password
The system password prevents unauthorized use of your computer.
If you enabled the password feature, it is impossible to boot the
computer without entering the password.
To set a password, highlight Password or simply double-click the
Password icon. The following screen appears:
Your password can consist of up to six characters. The password
does not appear on the screen. WinBIOS prompts you to retype the
password. The following screen appears.
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AMI BIOS
If you forget your password, you must clear the CMOS RAM and
reconfigure the system.
To disable the password, press e when prompted for your password.
Press e again when prompted to retype the password.
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AMI BIOS
Anti-virus
Set this parameter to Enabled to protect the boot sector and
partition table of your hard disk from virus intrusion. Set it to
Disabled to bypass the feature.
A prompt appears when you select Anti-virus from the Security
Setup menu:
Select Enabled and the screen below appears:
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AMI BIOS
Exit Setup
To exit Setup, you can either double-click on the Control menu box
or simply press ^. A dialog box appears on the screen.
If you select Save Changes and Exit , the BIOS
automatically saves all CMOS values before leaving Setup. Select
Do Not Save Changes and Exit to exit Setup without
saving the CMOS values. Select Continue to return to Setup if
you want to reconfigure your system.
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AMI BIOS
NCR SCSI BIOS and Drivers
The NCR 53C810 SCSI BIOS resides on the same flash memory
chip as the system BIOS. To use the onboard NCR BIOS, you need
to install an NCR 53C810 SCSI controller card in your system.
All SCSI devices that you install in your system require software
drivers. The NCR SCSI BIOS directly supports SCSI hard disks
under DOS, Windows and OS/2. It also uses DOS-format and SCO
UNIX -format support floppy disk device drivers that come with the
NCR 53C810 SCSI controller card. The DOS-format device drivers
are for SCSI devices used with DOS, Windows NT, Novell NetWare
and OS/2. The SCO UNIX-format device drivers are for SCSI
devices used with SCO UNIX. These drivers offer higher
performance than the direct BIOS support.
To use the device drivers, you must install them in your system hard
disk drive and add them to your system configuration files. For
detailed installation instructions, see the README files that come
with the drivers.
The system board also supports the AMI
Flash Memory Writer Utility that allows
you to upgrade the system BIOS. For
more information on this utility, contact
your local distributor.
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Jumper Summary A
CPU Type and Speed
CPU Type JP9 JP10 JP22 JP23
P54C-75 2-3 2-3 2-3 2-3
P54C-90 2-3 1-2 2-3 2-3
P54C-100 1-2 2-3 2-3 2-3
P54C/CS/CQS-120 2-3 1-2 1-2 2-3
P54C/CS/CQS-133 1-2 2-3 1-2 2-3
P54CS/CQS-150 2-3 1-2 1-2 1-2
P54CS/CQS-166 1-2 2-3 1-2 1-2
Cyrix 6x86-P120+ 2-3 2-3 Open Open
Cyrix 6x86-P150+ 2-3 1-2 Open Open
Cyrix 6x86-P166+ 1-2 2-3 Open Open
Flash ROM Type
Type JP18
Flash ROM
5V Vpp
12V Vpp
EEPROM 2-3, 4-5
2-3, 5-6
1-2, 5-6
Appendix
ECP DMA Channel
DMA JP11 JP12
DMA 1 2-3 2-3
DMA 3 1-2 1-2
FDC and Super I/O Chip
Function JP14
Enabled 1-2
Disabled 2-3
User’s Guide A-1
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Jumper Summary
Cache Mode
Cache Mode JP1
Linear (Cyrix) 1-2
Interleave (Intel) 2-3
VGA
Function JP4 JP6 JP7
Enabled 1-2 1-2 2-3
Disabled Open 2-3 3-4
CMOS
Function JP19
Normal 1-2
Clear CMOS 2-3
Default Setting for Reserved Jumpers
Jumper Default Setting
JP3 1-2, 3-4, 5-6
JP8 1-2
JP13 1-2, 3-4, 5-6
A-2 User’s Guide
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