Acer V65XA User manual

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System Board
System Board 1-1
The V65XA-2 is an all-in-one high-performance system board that
supports the Intel Pentium II processor with MMX (MultiMedia
eXtensions) technology and the Celeron processor. The Pentium II
comes in a card design with 256- or 512-KB second-level cache
already integrated. The Celeron processor also comes in the same
package but without second-level cache. Both are capable of handling
multimedia functions and enhancing the performance of 32-bit
applications.
The system board memory is upgradable to 256 MB via two 168-pin
DIMM (Double In-line Memory Module) sockets. The board
incorporates a 3-D video controller with AGP (Accelerated Graphics
Port) feature, 2- or 4-MB SGRAM (Synchronous Graphics Random
Access Memory), and a 3-D audio controller to fully support
multimedia functions.
Onboard I/O (input/output) interfaces are comprised of two UART
(Universal Asynchronous Receiver-Transmitter) 16C550 serial ports, a
parallel port with SPP (Standard Parallel Port)/ECP (Extended
Capabilities Port)/EPP (Enhanced Parallel Port) support, and PS/2
keyboard and mouse ports. Two USB (Universal Serial Bus) ports,
one VGA (Video Graphics Accelerator) port, one Feature connector,
one mono Microphone-in port, one stereo Line-in port, one Line-out
port, and one Game/MIDI (Musical Instrument Digital Interface) port
are also added to the board design to enable the system to support
additional peripherals.
For expansion, the board comes with two ISA (Industry Standard
Architecture) slot, one PCI-/ISA-shared slot, and three PCI (Peripheral
Component Interface) slots.

1-2 User’s Guide
Special features such as PnP (Plug-and-Play) support, Power
Management, Hardware Monitoring, Wake-on Ring, and Wake-on
LAN (Local Area Network) functions are also supported. These
functions are individually discussed in this chapter.
The system is fully compatible with MS-DOS V6.X, OS/2, SCO UNIX,
Windows NT, and Windows 95 operating systems.
1.1 Major Components
The system board has the following major components:
•A CPU (Central Processing Unit) connector that supports either of
the following:
•Pentium II processor running at 233, 266, 300, or 333 MHz
•Celeron processor running at 266 MHz
•Optional 256- or 512-KB PBSRAM (PBSRAM - Pipelined-burst
Sychronous Random Access Memory) second-level cache
(incorporated in the CPU card)
•Two DIMM sockets that accept 16-, 32-, 64-, and 128-MB
Standard DRAMs, without Parity Check or Error Correction Code
(ECC) feature. These sockets allow memory upgrade of up to
256 MB
•PCI local bus IDE (Integrated Device Electronics) controller
•3-D audio controllern
•AGP-compliant 3-D video graphics accelerator with 2- or 4-MB
SGRAM
•One ATI Multimedia Channel (AMC) connector
•One Wake-on LAN connector
•One Modem ring-in connector
•One Modem connector

System Board 1-3
•Two PCI enhanced IDE interfaces that support up to four IDE
devices
•External ports
•PS/2 keyboard and mouse ports
•Two buffered high-speed serial ports
•One SPP/ECP/EPP high-speed parallel port
•Two USB ports
•One standard VGA port
•One mono Microphone-in port
•One stereo Line-in port
•One stereo Line-out port
•One Game/MIDI port
•Two ISA and three PCI slots (one PCI-/ISA-shared)

1-4 User’s Guide
1.2 System Board Layout
Figure 1-1 shows the locations of the major components on the
system board.
1 USB ports
2 PS/2 mouse port
3 Power connector
4 CPU card connector
5 5-pin fan connector
6 2-pin fan connector
7 Voltage regulators with heatsink
8 DIMM sockets
9 Battery
10 PCI, AGP, memory controller
11 IDE1 connector
12 IDE2 connector
13 Video controller
14 Power LED connector
15 Wake-On LAN connector
16 PCI-to-ISA bridge controller
17 Power switch connector
18 Modem ring-in connector
19 Floppy disk drive connector
20 HDD LED connector
21 Buzzer
22 System BIOS chip
23 Ultra I/O controller
24 ISA slots
25 PCI slots
26 CS4610 connector
27 Audio controller
28 CD-in connector
29 Modem connector
30 Video memory
31 Microphone-in port
32 Line-in port
33 Line-out port
34 MIDI connector
35 VGA port
36 COM1 port
37 PS/2 keyboard port
38 Parallel port
39 AMC connector
Figure 1-1 System Board Layout
12
3 4 5678
910
11 12 13
14
38 37
36 35
34 33 32 31
26
2728
29
30
25 24 23
22
15 16 17
18 1920 21
39

System Board 1-5
1.3 Jumpers and Connectors
1.3.1 Jumper and Connector Locations
Figure 1-2 shows the jumper and connector locations on the system
board.
Figure 1-2 System Board Jumper and Connector Locations
The blackened pin of a jumper or a connector
represents pin 1.

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1.3.2 Jumper Settings
The following table lists possible jumper settings:
Table 1-1 Jumper Settings
Jumper Setting Function
JP1 1-2
2-3 *
VGA IRQ
Enabled
Disabled
SW1-SW6 Settings
SW1 On *
Off
Password
Bypass password
Check password
SW2 On
Off *
BIOS
OEM
Acer
SW3 SW4 SW5 SW6
On On On On
On Off Off On
Off On Off On
Off *On *On *On *
Off Off On On
CPU Frequency (MHz)
133
233
300
266
333
*Default

System Board 1-7
1.3.3 Onboard Connector Functions
Table 1-2 lists the onboard connectors and their respective functions.
Table 1-2 System Board Connectors
Connector Function
CN1 Power on connector
CN3 USB ports
CN4 Power connector
CN5 Upper: PS/2 mouse port
Lower: PS/2 keyboard port
CN6 Upper: Parallel port
Lower: VGA port (left)
COM1 port (right)
CN7 AMC connector
CN8 IDE2 connector
CN9 IDE1 connector
CN10 Upper: Game/MIDI port
Lower: (L-to-R)
Stereo line-out port
Stereo line-in port
Mono microphone-in port
CN13 Modem/Line-in connector
CN14 Wake-on LAN connector
CN15 CD-in connector
CN16 Software power connector
CN17 Modem ring-in connector
CN18 CS4610 connector
CN19 Floppy disk drive (FDD) connector
CN21 IDE LED connector
CN24 Power LED connector
FN1 5-pin fan power connector
FN2 2-pin fan power connector

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1.4 Installation Precautions
Before you install any system component, we recommend that you
read the following sections. These sections contain important ESD
precautions, pre- and post-installation instructions.
1.4.1 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.
1.4.2 Pre-installation Instructions
Always observe the following before you install a system component:
1. Turn off the system power and all the peripherals connected to
the unit before opening it.
2. Open the system according to the instructions in the housing
installation manual.
3. Follow the ESD precautions in section 1.4.1 before handling a
system component.
4. Remove any expansion boards or peripherals that block access
to the DIMM sockets or CPU connector.
5. See the following sections for specific instructions on the
component you wish to install.

System Board 1-9
Do not attempt the procedures described in
the following sections unless you are a
qualified service technician.
1.4.3 Post-installation Instructions
Observe the following after installing a system component:
1. See to it that the components are installed according to the step-
by-step instructions in their respective sections.
2. Make sure you have set all the required jumpers. See section
1.3.2 for the correct jumper settings.
3. Replace any expansion boards or peripherals that you removed
earlier.
4. Replace the system cover.
5. Connect the necessary cables and turn on the system.
Every time you change your system hardware
configuration such as memory size, CPU type,
hard disk type, etc., you must reload the BIOS
default settings. To do this, enter the BIOS
Setup and select
Load Default Settings
.
This will enable BIOS to automatically detect
the changes in system configuration;
otherwise, BIOS will keep the previous CMOS
settings. For more details on BIOS, see
Chapter 2.

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1.5 Memory Configurations
The system board comes with two 168-pin DIMM sockets that allow
you to expand memory to a maximum of 256 MB. The DIMM sockets
support SDRAMs (Synchronous Direct Random Access Memory) and
EDO (Extended Data Out) DRAMs with 16-, 32-, 64-, and 128-MB
capacities, 60 ns (nanoseconds) or less access time, and without ECC
feature.
Table 1-3 lists possible memory configurations.
Table 1-3 Memory Configurations
DIMM1 DIMM2 Total Memory
16 MB 16 MB
32 MB 32 MB
64 MB 64 MB
128 MB 128 MB
16 MB 16 MB
32 MB 32 MB
64 MB 64 MB
128 MB 128 MB
16 MB 16 MB 32 MB
32 MB 32 MB 64 MB
64 MB 64 MB 128 MB
128 MB 128 MB 256 MB

System Board 1-11
1.5.1 Installing a DIMM
Follow these steps to install a DIMM:
1. Open the clips on the socket.
2. Align the DIMM with the socket.
3. Press the DIMM into the socket until the clips lock into the DIMM.
Figure 1-3 Installing a DIMM
The DIMM socket is slotted to ensure proper
installation. If you insert a DIMM but it does
not fit easily into the socket, you may have
inserted it incorrectly. Turn the DIMM around
and try to insert it again.

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1.5.2 Removing a DIMM
To remove a DIMM:
1. Press the holding clips on both sides of the socket outward to
release the DIMM.
2. Gently pull the DIMM out of the socket.
Figure 1-4 Removing a DIMM
1.5.3 Reconfiguring the System
The system automatically detects the amount of memory installed.
Run Setup to view the new value for total system memory and make a
note of it.

System Board 1-13
1.6 Upgrading the Processor
The board supports a Pentium II processor or a Celeron processor.
Both processors come in a new enclosed packaging technology called
S.E.C. (Single-Edge Contact) cartridge. The only difference between
the two is that the Pentium II processor comes with 256-KB or 512-KB
built-in second-level cache, while the Celeron processor comes only
with an internal cache. Both are capable of increasing the
performance of 32-bit software and multimedia applications.
1.6.1 Removing a Processor Card
Observe the ESD precautions when installing
or removing a system component.
Before you can replace or upgrade your processor, you need to
remove the previously installed processor on the system board.
Follow these steps to remove the processor card:
1. Press the latches on both sides of the processor to release it from
the retention mechanism. You will hear a click sound once the
latch is released.
Figure 1-5 Pressing the Latches
2. Pull the processor to totally detach it from the CPU connector.

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Figure 1-6 Removing a Processor Card
1.6.2 Installing a Processor
Observe the ESD precautions when installing
or removing a system component.
Before you proceed, make sure that there is no processor installed in
the CPU connector.
Follow these steps to install a processor card:
1. Place the retention mechanism over the CPU connector on the
system board. Secure it with the screws that came with the
package.

System Board 1-15
Figure 1-7 Installing the Retention Mechanism
2. Remove the processor card from its protective packaging. Make
sure that the latches on the sides of the module are not pressed.
3. With the processor card golden fingers pointing downward, align
the processor to the posts of the retention mechanism.
4. Lower the processor into to the CPU connector on the system
board until the golden fingers touch the connector.
Figure 1-8 Installing a Processor Card

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5. Press down the processor until the golden fingers completely fit
into the connector and the latches on the sides lock the processor
into place.
Figure 1-9 Locking the Processor
1.7 IDE Hard Disk Support
The board comes with an enhanced PCI IDE controller that supports
PIO mode 4 and Ultra DMA (Direct Memory Access) mode data
transfers. In addition, two PCI IDE interfaces are mounted on the riser
card to enable the system to support a maximum of four IDE hard
disks, or any other IDE devices. See Figure 1-2 for the location of the
IDE interfaces.
Connect the cables according to the IDE hard disk configuration in
Table 1-4. Follow the instructions in the housing installation manual
on how to install a hard disk in the system.
Table 1-4 IDE Hard Disk Configuration
IDE Connector Master Slave
IDE1 (CN9) Hard disk 0 Hard disk 1
IDE2 (CN8) Hard disk 2 Hard disk 3 /
IDE CD-ROM drive

System Board 1-17
1.8 Video Function
The onboard video controller is capable not only of enhancing video
display, but supporting 3-D video applications as well. The video
controller features the Accelerated Graphics Port (AGP) design - the
latest bus architecture that is considered to be the best solution for 3-D
applications. AGP offers greater bandwidth; thus, it is capable of
speeding up the VGA bus in order to meet the requirement of 3-D
applications.
The board may come with 2-MB or 4-MB video memory. Larger video
memory allows you to display higher resolutions and more colors.
1.8.1 Supported Video Resolutions
The following table lists the video resolutions supported by the
onboard VGA:
Table 1-5 Supported Video Resolutions
Resolution bpp Vertical Freq.
(Hz) Horizontal Freq. (KHz)
640 x 480 8/16/24/32 60 31.5
640 x 480 8/16/24/32 72 37.4
640 x 480 8/16/24/32 75 37.5
640 x 480 8/16/24/32 85 43.3
640 x 480 8/16/24/32 90 48.0
640 x 480 8/16/24/32 100 52.9
640 x 480 8/16/24/32 120 63.7
640 x 480 8/16/24/32 160 81.0
640 x 480 8/16/24/32 200 100.2
848 x 480 8/16 88 46
Table 1-5 Supported Video Resolutions

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Resolution bpp Vertical Freq.
(Hz) Horizontal Freq. (KHz)
800 x 600 8/16/24/32 48 33.8
800 x 600 8/16/24/32 56 35.2
800 x 600 8/16/24/32 60 37.8
8/16/24/32 8/16/24/32 70 44.5
800 x 600 8/16/24/32 72 48.0
800 x 600 8/16/24/32 75 46.9
800 x 600 8/16/24/32 85 53.7
800 x 600 8/16/24/32 90 57.1
800 x 600 8/16/24/32 100 62.5
800 x 600 8/16/24/32 120 76.1
800 x 600 8/16/24 160 99.6
800 x 600 8/16 200 125.9
1024 x 768 8/16 43 35.5
1024 x 768 8/16 60 48.4
1024 x 768 8/16 70 56.5
1024 x 768 8/16 72 58.2
1024 x 768 8/16 75 60.0
1024 x 768 8/16 85 68.7
1024 x 768 8/16 90 76.2
1024 x 768 8/16 100 79.0
1024 x 768 8/16 120 96.7
1024 x 768 8/16 140 113.1
1024 x 768 8 150 120.6

System Board 1-19
Table 1-5 Supported Video Resolutions
Resolution bpp Vertical Freq.
(Hz) Horizontal Freq. (KHz)
1152 x 864 8/16 43 45.9
1152 x 864 8/16 47 44.9
1152 x 864 8/16 60 54.9
1152 x 864 8/16 70 66.1
1152 x 864 8/16 75 75.1
1152 x 864 8/16 80 76.4
1152 x 864 8/16 85 77.1
1152 x 864 8/16 100 90.2
1152 x 864 8/16 120 108.6
1280 x 1024 8 43 50.0
1280 x 1024 8 47 50.0
1280 x 1024 8 60 64.0
1280 x 1024 8 70 74.6
1280 x 1024 8 74 77.9
1280 x 1024 8 75 80.0
1280 x 1024 8 85 91.2
1280 x 1024 8 90 96.2
1280 x 1024 8 100 106.7
1600 x 1200 8 76 81.3
1600 x 1200 8 52 68.0
1600 x 1200 8 58 75.0
1600 x 1200 8 60 76.2
1600 x 1200 8 66 82.7
1600 x 1200 8 72 89.7
1600 x 1200 8 75 93.8
You may disable the onboard video function in
the BIOS Utility. For more details on BIOS, see
Chapter 2.

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1.9 Audio Function
The board provides a complete 3-D audio solution via the onboard 3-D
video controller and the following audio connectors:
•Mono microphone port
•Stereo line-in port
•Stereo line-out port
•Game/MIDI port
•CD-in connector
•Modem connector
See Figure 1-1 or Figure 1-2 for the location of these connectors.
1.9.1 Connecting Audio Peripherals
The onboard audio ports allow the system to accommodate external
audio devices. To connect an audio device, simply plug in the device’s
connector to its corresponding onboard audio port. See the following
figure:
Figure 1-10 Connecting External Audio Peripherals
microphone
CD player (or synthesizer)
speakers
MIDI device