VIA Technologies EPIA-M850 User Manual

1.07-

0621201

3-174200

Revision

1.07

user manual

EPIA-M850

Mini-ITX Embedded Board

Copyright

Copyright © 2013 VIA Technologies Incorporated. All rights reserved.

No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or

translated into any language, in any form or by any means, electronic, mechanical, magnetic, optical,

chemical, manual or otherwise without the prior written permission of VIA Technologies, Incorporated.

Trademarks

All trademarks are the property of their respective holders.

Disclaimer

No license is granted, implied or otherwise, under any patent or patent rights of VIA Technologies. VIA

Technologies makes no warranties, implied or otherwise, in regard to this document and to the products

described in this document. The information provided in this document is believed to be accurate and

reliable as of the publication date of this document. However, VIA Technologies assumes no responsibility

for the use or misuse of the information (including use or connection of extra device/equipment/add-on

in this document and for any patent infringements that may arise from the use of this document. The

card)

information and product specifications within this document are subject to change at any time, without

notice and without obligation to notify any person of such change.

VIA Technologies, Inc. reserves the right the make changes to the products described in this manual at any

time without prior notice.

Regulatory Compliance

FCC

FCC----AAAA Radio Frequency Interference Statement

Radio Frequency Interference Statement

FCCFCC

Radio Frequency Interference Statement Radio Frequency Interference Statement

This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to

part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful

interference when the equipment is operated in a commercial environment. This equipment generates, uses,

and can radiate radio frequency energy and, if not installed and used in accordance with the instruction

manual, may cause harmful interference to radio communications. Operation of this equipment in a

residential area is likely to cause harmful interference, in which case the user will be required to correct the

interference at his personal expense.

Notice 1

Notice 1

Notice 1Notice 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

Notice 2

Notice 2Notice 2

Shielded interface cables and A.C. power cord, if any, must be used in order to comply with the emission

limits.

Notice 3

Notice 3

Notice 3Notice 3

The product described in this document is designed for general use, VIA Technologies assumes no

responsibility for the conflicts or damages arising from incompatibility of the product. Check compatibility

issue with your local sales representatives before placing an order.

Tested To Comply
With FCC Standards
FOR HOME OR OFFICE USE

II

Battery Recycling and Disposal



Only use the appropriate battery specified for this product.



Do not re-use, recharge, or reheat an old battery.



Do not attempt to force open the battery.



Do not discard used batteries with regular trash.



Discard used batteries according to local regulations.

Safety Precautions



Always read the safety instructions carefully.



Keep this User's Manual for future reference.



All cautions and warnings on the equipment should be noted.



Keep this equipment away from humidity.



Lay this equipment on a reliable flat surface before setting it up.



Make sure the voltage of the power source and adjust properly 110/220V

before connecting the equipment to the power inlet.



Place the power cord in such a way that people cannot step on it.



Always unplug the power cord before inserting any add-on card or module.



If any of the following situations arises, get the equipment checked by

authorized service personnel:

• The power cord or plug is damaged.

• Liquid has penetrated into the equipment.

• The equipment has been exposed to moisture.

• The equipment has not worked well or you cannot get it work according

to User's Manual.

• The equipment has dropped and damaged.

• The equipment has obvious sign of breakage.



Do not leave this equipment in an environment unconditioned or in a

storage temperature above 60°C (140°F). The equipment may be damaged.



Do not leave this equipment in direct sunlight.



Never pour any liquid into the opening. Liquid can cause damage or

electrical shock.



Do not place anything over the power cord.



Do not cover the ventilation holes. The openings on the enclosure protect

the equipment from overheating

III

IV

Box Contents and Ordering Information

Model Number Description

EPIA-M850-16L Standard kit

EPIA-M850-12EL Standard kit

 1 x SATA cable
 1 x I/O bracket

 1 x SATA cable
 1 x I/O bracket

V

T

ABLE OF

C

ONTENTS

1 Overview ................................................................................................................. 1

Key Components ................................................................................................. 2

VIA Nano™ NanoBGA2 CPU .................................................................. 2

VIA VX900 System Processor ................................................................... 2

Layout........................................................................................................................ 3

Layout (I/O panel)............................................................................................... 4

Specifications ......................................................................................................... 5

2 Hardware Installation........................................................................................ 7

External I/O ............................................................................................................ 8

PS/2 ports........................................................................................................... 8

VGA port ............................................................................................................ 8

HDMI® port .......................................................................................................8

COM ports .........................................................................................................8

Gigabit LAN ports .......................................................................................... 8

USB ports............................................................................................................ 8

Audio ports........................................................................................................ 9

Onboard connectors.......................................................................................10

LVDS panel connector ..............................................................................10

Inverter connector.......................................................................................11

SATA connectors..........................................................................................12

PCIe slot.............................................................................................................12

USB device port pin header....................................................................13

USB pin header .............................................................................................13

RS232 COM pin headers..........................................................................14

Digital I/O pin headers..............................................................................15

LPC pin header..............................................................................................16

SMBus pin header........................................................................................16

SPI pin header................................................................................................16

SPDIF connector...........................................................................................17

PS/2 keyboard and mouse pin header.............................................17

Front audio pin header.............................................................................18

Front panel pin header .............................................................................18

Memory module slots ................................................................................19

CPU fan and system fan connectors ..................................................21

ATX power connector...............................................................................22

CMOS battery.................................................................................................23

Onboard Jumpers ............................................................................................24

LVDS jumper settings.................................................................................24

Clear CMOS jumper....................................................................................25

3 BIOS Setup............................................................................................................26

Entering the BIOS Setup Menu ..................................................................27

Control Keys .........................................................................................................27

Getting Help ........................................................................................................28

Main Menu ...........................................................................................................29

AMIBIOS............................................................................................................29

Processor ..........................................................................................................29

System Memory.............................................................................................29

System Time ....................................................................................................29

System Date ....................................................................................................29

Advanced Settings ............................................................................................30

CPU Configuration ...........................................................................................31

CPU Thermal Control .................................................................................31

IDE Configuration .............................................................................................32

IDE Drives ..............................................................................................................33

PIO Mode.........................................................................................................33

DMA Mode .....................................................................................................33

SuperIO Configuration ...................................................................................34

Serial Port Address, IRQ, and Type.......................................................34

Hardware Health Configuration ...............................................................35

H/W Health Function................................................................................35

WatchDog Configuration.............................................................................36

WatchDog Control .....................................................................................36

Time ....................................................................................................................36

Unit......................................................................................................................36

ACPI Configuration...........................................................................................37

Suspend Mode ..............................................................................................37

ACPI Version Features ...............................................................................37

APM Configuration...........................................................................................38

Power Button Mode...................................................................................38

Restore on AC / Power Loss...................................................................38

Resume on PCI Express .............................................................................38

Resume On PS/2 KBC ................................................................................39

Wake-Up Key..................................................................................................39

Wake-Up Password.....................................................................................39

Resume on PS/2 Mouse............................................................................39

Resume on RTC Alarm...............................................................................39

RTC Alarm Date (Days)..............................................................................40

System Time ....................................................................................................40

USB Configuration ............................................................................................41

CRB Configuration ............................................................................................42

VI

DRAM Clock....................................................................................................42

Select Display Device 1 and 2................................................................42

Panel Type and Panel Type 2.................................................................43

VGA Share Memory (Frame Buffer) ...................................................43

Backlight Control..........................................................................................43

OnChip HDAC Device...............................................................................43

VT6130 LAN Control 1..............................................................................44

LAN Boot ROM..............................................................................................44

Boot Settings........................................................................................................45

Boot Settings Configuration.........................................................................46

Quick Boot.......................................................................................................46

Quiet Boot .......................................................................................................46

Bootup Num-Lock .......................................................................................46

Wait For ‘F1’ If Error ....................................................................................46

Hit ‘DEL’ Message Display........................................................................47

Security Settings..................................................................................................48

Change Supervisor Password ................................................................48

User Access Level .........................................................................................48

Change User Password ............................................................................49

Clear User Password...................................................................................49

Password Check............................................................................................49

Exit Options ..........................................................................................................50

Save Changes and Exit ..............................................................................50

Discard Changes and Exit........................................................................50

Discard Changes ..........................................................................................50

Load Optimal Defaults...............................................................................50

4 Driver Installation...............................................................................................51

Microsoft Driver Support................................................................................52

Linux Driver Support ........................................................................................52

VII

1

Overview

1

The VIA EPIA-M850 Mini-ITX Mainboard is a compact native x86
mainboard optimized for advanced level system in embedded and
multimedia applications. It provides support for high fidelity audio
with its onboard VIA VT1708S High Definition Audio codec. In
addition it supports two SATA 3Gb/s storage.

The EPIA-M850 is based on the VIA VX900 Unified Digital Media
IGP chipset featuring the VIA Chrome™ 9 HC3 with 2D/3D
graphics and video accelerators for rich digital media performance.

KEY COMPONENTS

VIA Nano™ NanoBGA2 CPU

The VIA Nano is a 64-bit superscalar processor in x86 platform
using a 65 nanometer process technology. It delivers an energy­efficient, powerful performance, with cool and quiet operation all
within an ultra compact NanoBGA2 package measuring 21mm x
21mm. Perfectly fit for embedded system applications such as
industrial PCs, test machines, measuring equipment, digital
signage, medical PCs, monitoring systems, gaming machines, in­vehicle entertainment, and etc. The VIA Nano also boasts of
immersive multimedia performance, connectivity and computing
applications.

VIA VX900 System Processor

The VIA VX900 media system processor is an all-in-one, highly
integrated digital media IGP chipset featuring the latest video,
graphics and connectivity performance in a single chip measuring
just 31x31mm.

2

LAYOUT

Item Description Page

1 PCIE1: 1 x PCIe 4-lane slot 12
2 SPDIF1: SPDIF connector 17
3 BL1: Backlight inverter connector 11
4 LVDS1: LVDS connector 10
5 J3: LVDS power select and inverter select jumper 24
6 KBMS1: PS2 pin header for keyboard and mouse 17
7 CN1: 20-pin ATX connector 22
8 U16: VIA Nano CPU 2
9 FAN2: CPU fan 21
10 DIM1, DIM2: DDR3 slots 19
11 FAN1: System fan 21
12 U15: VIA VX900 2
13 SMB1: SMBus pin header 16
14 F_PANEL1: front panel pin header 18
15 DIO1, DIO2: Digital I/O pin headers 15
16 COM2, COM3, COM4: COM pin headers 14
17 SATA1, SATA2: SATA connectors 12
18 SPI1: SPI pin header 16
19 USB1_2, USB3_4: USB pin headers 13
20 USBD1: USB device port pin header 13
21 F_AUDIO1: front audio pin header 18
22 BAT1: CMOS battery socket 23
23 JBAT1: CMOS reset jumper 25
24 LPC1: LPC pin header 16

3

LAYOUT (I/O PANEL)

Item Description Page

1 PS/2 keyboard port 8
2 PS/2 mouse port 8
3 COM port 8
4 VGA port 8
5 HDMI® port 8
6 USB ports 8
7 GigaLAN port 8
8 Line-in 3.5 mm TRS jack 9
9 Line-out 3.5 mm TRS jack 9
10 MIC-in 3.5 mm TRS jack 9

4

SPECIFICATIONS

Processor

Chipset
Super I/O
Memory

VGA
Storage
LAN
Audio
I/O

Expansion
Back Panel I/O

BIOS

Operating System

Fan

VIA 1.6 GHz Nano processor

Fanless

VIA 1.2GHz Nano processor
VIA VX900 Advanced all-in-one system processor
Fintek F81865-I
2 x DDR3 1066/800 MHz DIMM slot
(each slot can support a 4 GB module**)
Integrated VIA Chrome™ 9 HC3 3D/2D graphics
2 x SATA 3Gb/s connectors
VIA VT6130 PCIe Gigabit Ethernet controller
VIA VT1708S High Definition audio codec
2 x USB pin header (supports four USB ports)
1 x 2-channel 24-bit LVDS connector
1 x LVDS inverter connector
1 x front audio pin header
(Line-in/Mic-in or amplifier module)
1 x PS2 keyboard/mouse pin header
3 x RS232 pin header (configurable 5V/12V)
1 x LPC pin header
1 x SMBUS pin header
1 x S/PDIF Out connector
2 x Digital I/O pin header (GPI x 8, GPO x 8)
1 x front panel pin header
2 x Smart Fan connectors
1 x Temperature sensor on board
1 x ATX power connector
1 x 4-lane PCIe slot
2 x PS/2 connectors (mouse and keyboard)
1 x RS232 COM port
1 x VGA port
1 x RJ-45 LAN port
4 x USB ports
3 x Audio jacks (Line-out, Line-in, Mic-in)
AMI BIOS
4/8Mbit SPI Flash ROM
Windows 7, Windows CE, XPe, XP, Linux

5

System Monitoring

Operating environment

Form Factor
Certifications
Compliance

Note:
*Specifications are subject to change without notice

**The actual Max memory capacity that could be recognized under a 64-bit OS will
be around 7.1GB due to the conflict in the memory space of the MMIO mapping.

- CPU voltage monitor

- System temperature monitor

- Wake-on-LAN, keyboard power-on, RTC timer,
Watch Dog timer

- System power management

- AC power failure recover
0°C ~ 60°C
0% ~ 95% (relative humidity; non-condensing)
Mini-ITX (17 cm x 17 cm)
CE/FCC, BSMI
RoHS

6

2

Hardware

Installation

7

EXTERNAL I/O

The external I/O panel has the following ports:

PS/2 ports

There are two PS/2 ports: one for a keyboard, one for a mouse.

VGA port

The 15-pin VGA port is for connecting to analog displays.

HDMI® port

The HDMI® port is for connecting to HDMI® displays.

COM ports

The 9-pin COM port is for pointing devices or other serial devices.

Gigabit LAN ports

The Gigabit Ethernet port is controlled through the VIA VT6130
PCIe Gigabit Ethernet controller.

USB ports

Four standard USB 2.0 ports are provided.

8

Audio ports

Three 3.5 mm TRS jacks enable connections to Line-out, Line-in,
and Mic-in.

9

ONBOARD CONNECTORS

LVDS panel connector

The onboard LVDS panel connector LVDS1 supports dual-channel
24-bit displays.

Pin Signal Pin Signal

1 1LDC4- 2 PVDD1
3 1LDC4+ 4 PVDD1
5 GND 6 GND
7 1LDC5- 8 GND
9 1LDC5+ 10 1LDC0­11 GND 12 1LDC0+
13 1LDC6- 14 GND
15 1LDC6+ 16 1LDC1­17 GND 18 1LDC1+
19 1LCLK2- 20 GND
21 1LCLK2+ 22 1LDC2­23 GND 24 1LDC2+
25 1LDC7- 26 GND
27 1LDC7+ 28 1LCLK1­29 NC 30 1LCLK1+
31 GND 32 GND
33 NC 34 1LDC3­35 NC 36 1LDC3+
37 NC 38 LCD CLK
39 NC 40 LCD DATA

10

Inverter connector

The onboard inverter controls the LVDS panel backlight and
brightness.

Pin Signal

1 IVDD1_CEN
2 IVDD1_CEN
3 ENABLT/ENAVDD1
4 NC
5 ENAVDD1/ENABLT1
6 BRIGHTNESS1_CTL
7 GND
8 GND

11

SATA connectors

There are two onboard SATA connectors that support data
transfer speeds up to 3 Gbps.

SATA1

Pin Signal Pin Signal

G1 G1 G1 G1
1 GND 1 GND
2 TX0+ 2 TX1+
3 TX0- 3 TX1­4 GND 4 GND
5 RX0- 5 RX1­6 RX0+ 6 RX1+
7 GND 7 GND
G2 G2 G2 G2

SATA2

PCIe slot

The onboard PCI Express slot supports one PCIe x4 expansion card.

12

USB device port pin header

The onboard USB Device Port pin header can be configured to
support standard USB Client connectors through cabling and turn
the system into a device mode to be controlled by another PC or
smart device for transmitting data, synchronizing data, etc.

Pin Signal Pin Signal

1 +5VUSBD 2 USB_DP­3 NC 4 USB_DP+
5 GND 6 —

Note:
USB Device port is a reserved
feature. Contact sales for
specific support.

USB pin header

The onboard USB pin headers enable the addition of four more
USB 2.0 ports.

USB1_2

Pin Signal Pin Signal

1 +5VDUAL 2 +5VDUAL
3 USBH_P1- 4 USBH_P7­5 USBH_P1+ 6 USBH_P7+
7 GND 8 GND
9 — 10 GND

USB3_4

Pin Signal Pin Signal

1 +5VDUAL 2 +5VDUAL
3 USBH_P2- 4 USBH_P6­5 USBH_P2+ 6 USBH_P6+
7 GND 8 GND
9 — 10 GND

13

RS232 COM pin headers

The mainboard includes three COM pin headers onboard.

COM2

Pin Signal Pin Signal

1 -DCDA_2 2 RXDA_2
3 TXDA_2 4 -DTRA_2
5 GND 6 -DSRA_2
7 -RTSA_2 8 -CTSA_2
9 -RIA_2 10 —

COM3

Pin Signal Pin Signal

1 -DCDA_3 2 RXDA_3
3 TXDA_3 4 -DTRA_3
5 GND 6 -DSRA_3
7 -RTSA_3 8 -CTSA_3
9 -RIA_3 10 —

COM4

Pin Signal Pin Signal

1 -DCDA_4 2 RXDA_4
3 TXDA_4 4 -DTRA_4
5 GND 6 -DSRA_4
7 -RTSA_4 8 -CTSA_4
9 -RIA_4 10 —

14

Digital I/O pin headers

The mainboard includes two Digital I/O pin headers that support
eight GPO and eight GPI pins.

DIO1

Pin Signal Pin Signal

1 DIO5V 2 DIO12V
3 GPO27 4 GPI19
5 GPO28 6 GPI20
7 GPO29 8 GPI21
9 GPO30 10 GPI22
11 GND 12 NC

DIO2

Pin Signal Pin Signal

1 DIO5V 2 DIO12V
3 GPO23 4 GPI15
5 GPO24 6 GPI16
7 GPO25 8 GPI17
9 GPO26 10 GPI18
11 GND 12 NC

15

LPC pin header

The mainboard includes one LPC pin header.

Pin Signal Pin Signal

1 +3.3V 2 -LPCRST
3 LPCCLK1 4 LAD0
5 -LFRAME 6 LAD1
7 LAD3 8 LAD2
9 GND 10 —

SMBus pin header

The mainboard includes an SMBus pin header.

Pin Signal

1 SMBCK
2 SMBDT
3 GND

SPI pin header

The onboard SPI pin header provides support for one full-duplex
serial slave device.

Pin Signal Pin Signal

1 SPIVCC 2 GND
3 MSPISS0 4 MSPICLK
5 MSPIDI 6 MSPIDO
7 — 8 -PCIRST

16

SPDIF connector

The mainboard includes one SPDIF connector.

Pin Signal

1 +5VAUDIO
2 SPDIFO
3 GND

PS/2 keyboard and mouse pin header

The mainboard includes one pin header for adding support for
PS/2 keyboard and mouse.

Pin Signal Pin Signal

1 +5VDUAL 2 +5VDUAL
3 NC 4 —
5 GND 6 GND
7 KB_DT 8 MS_DT
9 KB_CK 10 MS_CK

17

Front audio pin header

The mainboard has one pin header for connecting to front audio
Headphone-out and Mic-in jacks.

Pin Signal Pin Signal

1 LINE2R 2 LINE2L
3 NC 4 NC
5 MIC2_IN_R 6 MIC2_IN_L
7 — 8 NC
9 GND 10 GND

Front panel pin header

The mainboard has one pin header for connecting to front panel
switches and status LEDs.

Pin Signal Pin Signal

1 +5VDUAL 2 +5V
3 +5VDUAL 4 HD_LED
5 PW_LED 6 PWR_BTN
7 +5V 8 GND
9 NC 10 -RST_SW/-SUSB
11 NC 12 GND
13 SPEAK_BZ 14 +5V
15 — 16 NC

18

Memory module slots

The mainboard includes two DIMM memory module slots that
support DDR3 memory.

19

To install the memory modules:

1. Disengage the locking mechanism at both ends of the

DIMM slot.

2. Align the notch at the bottom of the DIMM with the

counterpart on the DIMM slot.

3. Then insert the DIMM into the slot and push down at

both ends until the locking clips snap into position.

20

CPU fan and system fan connectors

FAN1 (system) and FAN2 (CPU) run on +12V and maintains
system cooling. When connecting the cable to the connector,
always be aware that the red wire (positive wire) should be
connected to the pin 1. The black wire is the ground wire and
should always be connected to GND.

FAN1

Pin Signal Pin Signal

1 FAN_IN1 1 FAN_IN2
2 FAN_CTL1 2 FAN_CTL2
3 GND 3 GND

FAN2

21

ATX power connector

The mainboard supports a conventional ATX power supply for the
power system. Before inserting the power supply connector,
always make sure that all components are installed correctly to
ensure that no damage will be caused. To connect the power
supply, make sure the power plug is inserted in the proper
orientation and the pins are aligned. Then push down the plug
firmly into the connector.

Pin Signal Pin Signal

1 +3.3V 2 +3.3V
3 +3.3V 4 -12V
5 GND 6 GND
7 +5V 8 PS_ON
9 GND 10 GND
11 +5V 12 GND
13 GND 14 GND
15 PW_OK 16 -5V
17 +5V_SB 18 +5V
19 +12V 20 +5V

22

CMOS battery

The onboard battery provides power to the CMOS RAM. If
disconnected all configurations in the CMOS RAM will be reset to
factory defaults. When replacing the battery, use CR2032 coin
batteries.

23

ONBOARD JUMPERS

LVDS jumper settings

The LVDS connectors and LVDS inverters can operate on different
input voltages. Pins 1, 3, and 5 correspond to BL1. Pins 2, 4, and 6
correspond to LVDS1.

BL1 power 1 3 5

+12V ON ON OFF
+5V (default) OFF ON ON

LVDS1 power 2 4 6

+3.3V ON ON OFF
+5V (default) OFF ON ON

24

Clear CMOS jumper

The onboard CMOS RAM stores system configuration data and
has an onboard battery power supply. To reset the CMOS settings,
set the jumper on pins 2 and 3 while the system is off. Return the
jumper to pins 1 and 2 afterwards. Setting the jumper while the
system is on will damage the mainboard. The default setting is on
pins 1 and 2.

Setting 1 2 3

Normal Operation (default) ON ON OFF
Clear CMOS setting OFF ON ON

Caution:

Except when clearing the RTC RAM, never remove the cap from the CLEAR_CMOS
jumper default position. Removing the cap will cause system boot failure. Avoid
clearing the CMOS while the system is on; it will damage the mainboard.

25

3

BIOS Setup

26

ENTERING THE BIOS SETUP MENU

Power on the computer and press <Delete> during the beginning
of the boot sequence to enter the BIOS setup menu. If you missed
the BIOS setup entry point, restart the system and try again.

CONTROL KEYS

Keys Description

Up Move to the previous item
Down Move to the next item
Left Move to the previous tab
Right Move to the next tab
Enter Select the item
Esc Jumps to the Exit menu or returns to the main menu

+ (number pad) Increase the numeric value

- (number pad) Decrease the numeric value
F1 General help, only for Status Page Setup Menu and

F7 Discard Changes
F9 Load Optimized defaults
F10 Save all the changes and exit

from a submenu

Option Page Setup Menu

27

GETTING HELP

The BIOS setup program provides a “General Help” screen. You
can display this screen from any menu/sub-menu by pressing
<F1>. The help screen displays the keys for using and navigating
the BIOS setup. Press <Esc> to exit the help screen.

28

MAIN MENU

AMIBIOS

BIOS version number and related information.

Processor

This section describes the detected CPU name, speed, and
number of processors.

System Memory

This section describes the detected memory size.

System Time

Use the key “+” or “-” to configure system time. The time format is
[Hour : Minute : Second].

System Date

Use the key “+” or “-” to configure system Date. The date format is
[Day, Month, Date, Year].

29

ADVANCED SETTINGS

Available submenus include the following:

• CPU Configuration

• IDE Configuration

• SuperIO Configuration

• Hardware Health Configuration

• WatchDog Configuration

• ACPI Configuration

• APM Configuration

• USB Configuration

• CRB Configuration

30

CPU CONFIGURATION

CPU Thermal Control

This option is used to enable the internal thermal protection
features inside the onboard Nano CPU.

Settings Description

Disabled No thermal monitoring
TM3 Enables Thermal Monitor 3

31

IDE CONFIGURATION

Available submenus include the following:

• Primary IDE Master

• Primary IDE Slave

32

IDE DRIVES

PIO Mode

The Programmed Input/Output mode is a data transfer method
that uses the CPU registers to transfer data.

Settings Description

Auto The Programmed Input/Output mode is automatically selected.
0 Maximum transfer rate of 3.3 MB/s. Cycle time: 600ns. Defined

in ATA specification.

1 Maximum transfer rate of 5.2 MB/s. Cycle time: 383ns. Defined

in ATA specification.

2 Maximum transfer rate of 8.3 MB/s. Cycle time: 240ns. Defined

in ATA specification.

3 Maximum transfer rate of 11.1 MB/s. Cycle time: 180ns. Defined

in ATA-2 specification.

4 Maximum transfer rate of 16.7 MB/s. Cycle time: 120ns. Defined

in ATA-2 specification.

DMA Mode

The Direct Memory Access mode is a data transfer method that
bypasses the CPU and directly transfers between the system
memory and the connected IDE device.

Settings Description

Auto The Direct Memory Access mode is automatically selected.

33

SUPERIO CONFIGURATION

Serial Port Address, IRQ, and Type

The SuperIO configuration menu enables the BIOS to specifically
define the resources used for serial ports 1 – 4.

Port Address IRQ

1 3F8, 3E8, 2E8,

Disabled

2 2F8, 3E8, 2E8,

Disabled

3 3F8, 2F8, 3E8,

2E8, 2D0, 2E0,
Disabled

4 3F8, 2F8, 3E8,

2E8, 2D0, 2E0,
Disabled

3, 4, 10, 11

3, 4, 10, 11

3, 4, 10, 11

3, 4, 10, 11

34

HARDWARE HEALTH CONFIGURATION

The Hardware Health Configuration displays all monitored
information. System Temperature is taken from a sensor (PHILIPS
PMBT3904 SOT-23).

H/W Health Function

Settings Description

Disabled Support for this feature will be unavailable.
Enabled Enables the Hardware Health Monitoring device.

35

WATCHDOG CONFIGURATION

The WatchDog function monitors the system to ensure that the
system has not frozen. If the system appears to have frozen for a
specific period of time, then the WatchDog function will force the
system to reboot.

WatchDog Control

Settings Description

Disabled Disables the WatchDog function
Enabled Will monitor the system.

Time

This option is only visible when the WatchDog function is enabled.

Settings Description

0 ~ 255 Any integer in the range of 0 to 255.

Unit

This option is only visible when the WatchDog function is enabled.

Settings Description

Second Sets the time unit to seconds.
Minute Sets the time unit to minutes.

36

ACPI CONFIGURATION

Suspend Mode

Select the ACPI state used for system suspend.

Settings Description

S1(POS) S1/Power On Suspend (POS) is a low power state. In this

state, no system context (CPU or chipset) is lost and
hardware maintains all system contexts

S3(STR) S3/Suspend To RAM (STR) is a power-down state. In this

state, power is supplied only to essential components
such as main memory and wakeup-capable devices. The
system context is saved to main memory, and context is
restored from the memory when a "wakeup" event
occurs.

Auto Depends on the OS to select the state.

ACPI Version Features

To enable RSDP pointers to 64-bit Fixed System Description Tables.

Settings Description

ACPI v1.0 Supports ACPI v1.0
ACPI v2.0 Supports ACPI v2.0
ACPI v3.0 Supports ACPI v3.0

37

APM CONFIGURATION

Power Button Mode

Settings Description

On/Off Pressing the power button will Instantly cause the system to

power on or off.

Standby Requires the user to press and hold the power button for 4

seconds before powering off the system.

Suspend Pressing the power button will Instantly cause the system to

enter suspend mode.

Restore on AC / Power Loss

The field defines how the system will respond after an AC power
loss during system operation.

Settings Description

Power Off Keeps the system in an off state until the power button is

Power On Restarts the system when the power is back
Last State Save in last state

pressed.

Resume on PCI Express

Settings Description

Enabled The system will boot if any power management event is

Disabled The feature will be disabled.

triggered via PCI Express devices

38

Resume On PS/2 KBC

Enables any detected keyboard activity to restore the system from
a power saving mode to an active state.

Settings Description

S3 PS/2 keyboard activity will be detected if the system is in

S3/S4/S5 PS/2 keyboard activity will be detected if the system is in

Disabled Disables the detection of PS/2 keyboard activity.

S3 power saving mode.

S3/S4/S5 power saving mode.

Wake-Up Key

This option can only be modified when Resume on PS/2 KBC is
enabled.

Settings Description

Any Key Any key can be used to wake up the system.
Specific Key This option unlocks the Wake-Up Password option.

Wake-Up Password

This option can only be modified when Wake-Up Key is set to
Specific Key. When selected, a prompt will be displayed requesting
a password for waking up the system. This password can consist
of up to 6 alphanumeric characters and some special characters.
Function keys and modifier keys (such as Ctrl, Alt, Del, etc.) cannot
be used.

Resume on PS/2 Mouse

Enable any PS/2 mouse activity to restore the system from the
power saving mode to an active state.

Settings Description

S3 PS/2 mouse activity will be detected if the system is in S3

S3/S4/S5 PS/2 mouse activity will be detected if the system is in

Disabled Disables the detection of PS/2 mouse activity.

power saving mode.

S3/S4/S5 power saving mode.

Resume on RTC Alarm

This feature enables the BIOS to automatically power on at a
scheduled time.

Settings Description

Enabled Unlocks the RTC Alarm Date and System Time options.
Disabled Support for this feature will be unavailable.

39

RTC Alarm Date (Days)

This option enables the user to specify the frequency of the RTC
Alarm Date recurrence.

Settings Description

Every Day Triggers the RTC Alarm Date daily.
1 – 31 (days) Triggers the RTC Alarm Date according to the increment

specified.

System Time

This option enables the user to specify the power on time for the
scheduled recurring date.

40

USB CONFIGURATION

The USB configuration page detects all connected USB devices.

41

CRB CONFIGURATION

DRAM Clock

Settings Description

Auto Auto adjusts the DRAM clock
400 MHz Sets the DRAM clock to 400 MHz. DDR3 modules will

operate at 800 MHz.

533 MHz Sets the DRAM clock to 533 MHz. DDR3 modules will

operate at 1066 MHz.

Select Display Device 1 and 2

The system can output data to two display devices simultaneously.

Settings Description

CRT1 Specifies the CRT1 port as the display port being used.
LCD2 Specifies the LCD2 port as the display port being used.
LCD1 Specifies the LCD1 port as the display port being used.
HDMI® Specifies the HDMI® port as the display port being used.
DP Specifies the DP port as the display port being used.

42

Panel Type and Panel Type 2

This feature enables the user to specify the resolution of the display
being used with the system. The panel types are predefined in the
VGA VBIOS.

Settings Description

00 640 x 480
01 800 x 600
02 1024 x 768
03 1280 x 768
04 1280 x 1024
05 1400 x 1050
06 1440 x 900
07 1280 x 800
08 800 x 480
09 1024 x 600
10 1366 x 768
11 1600 x 1200
12 1680 x 1050
13 1920 x 1200
14 1920 x 1080
15 1024 x 576

VGA Share Memory (Frame Buffer)

Settings Description

8MB Allocates 8 MB of system DRAM for the VGA frame buffer.
16MB Allocates 16 MB of system DRAM for the VGA frame buffer.
32MB Allocates 32 MB of system DRAM for the VGA frame buffer.
64MB Allocates 64 MB of system DRAM for the VGA frame buffer.
128MB Allocates 128 MB of system DRAM for the VGA frame buffer.
256MB Allocates 256 MB of system DRAM for the VGA frame buffer.
512MB Allocates 512 MB of system DRAM for the VGA frame buffer.

Backlight Control

This option sets the brightness control for an LCD device.

Settings Description

0% Sets the panel backlight brightness to 0%.
25% Sets the panel backlight brightness to 25%.
50% Sets the panel backlight brightness to 50%.
75% Sets the panel backlight brightness to 75%.
100% Sets the panel backlight brightness to 100%.

OnChip HDAC Device

Settings Description

Enabled Enables the HD audio codec in the VT1708S controller.
Disabled Disables the HD audio codec in the VT1708S controller.

43

VT6130 LAN Control 1

Settings Description

Enabled Enable the onboard PCIe GigaLAN controller.
Disabled Disables the onboard PCIe GigaLAN controller and hides

it from the operating system.

LAN Boot ROM

This option enables the PXE feature for booting via LAN.

Settings Description

Enabled Enables the PXE feature of the LAN controller.
Disabled Does not load a separate ROM from the LAN controller.

44

BOOT SETTINGS

The Boot Settings menu has the following submenu:

 Boot Settings Configuration

Configuration settings during system boot.

45

BOOT SETTINGS CONFIGURATION

Quick Boot

Settings Description

Enabled Enables the BIOS to skip certain tests in order to reduce

boot up time.

Disabled Support for this feature will be unavailable.

Quiet Boot

Settings Description

Enabled Displays an OEM logo instead of POST messages.
Disabled Displays POST messages.

Bootup Num-Lock

Settings Description

On For keyboards with a built-in 10-key pad, the BIOS will

Off For keyboards with a built-in 10-key pad, the keypad will

force the keypad to behave in 10-key mode.

behave as a cursor keypad.

Wait For ‘F1’ If Error

Settings Description

Enabled If an error is detected, the BIOS will pause booting and

Disabled Ignores errors while booting.

wait for the user to press F1 to enter the BIOS setup
menu.

46

Hit ‘DEL’ Message Display

Settings Description

Enabled Shows the POST message that informs the user how to

Disabled Hides the POST message that informs the user how to

enter the BIOS setup menu. However, this message will
be hidden if the Display Logo option is enabled.

enter the BIOS setup menu.

47

SECURITY SETTINGS

Change Supervisor Password

This option is for setting a password for accessing the BIOS setup
utility. When a password has been set, a password prompt will be
displayed whenever the BIOS setup utility is launched. This
prevents an unauthorized person from changing any part of the
system configuration.

When a supervisor password is set, the User Access Level and
Password Check options will be unlocked.

User Access Level

This feature controls the level of access a user (without the
supervisor password) is granted to the BIOS setup utility.

Settings Description

No Access Completely locks the BIOS setup utility. The supervisor

View Only Only allows access to view the BIOS settings.
Limited Only allows non-critical BIOS settings to be changed.

Full Access Allows all BIOS settings to be changed except for the

password is required to access and change the BIOS
settings..

Changes are allowed to the following options:

 System Time
 System Date
 Quick Boot
 Display Logo

Change Supervisor Password and User Access Level
options.

48

Change User Password

This option is for setting a password for non-supervisors. When a
user password is set, the Clear User Password and Password
Check options will be unlocked.

Clear User Password

This option is only available when the user accesses the BIOS
Setup Utility when the user password has been specified.

Password Check

This feature is compulsory when the Change Supervisor Password
option is set. The user will have up to three chances to enter the
correct password before the BIOS forces the system to stop
booting. If the user does not enter the correct password, the
keyboard will also lock up. The only way to get past this is to do a
hard reboot (i.e., use the system reset button or cut off the power
to the system). A soft reboot (i.e., Ctrl+Alt+Del) will not work
because the keyboard will be locked.

Settings Description

Setup Force users to enter a password in order to access the

Always Force users to enter a password in order to boot up the

BIOS setup utility.

system.

49

EXIT OPTIONS

Save Changes and Exit

Save all changes to the BIOS and exit the BIOS Setup Utility. The
“F10” hotkey can also be used to trigger this command.

Discard Changes and Exit

Exit the BIOS Setup Utility without saving any changes. The “Esc”
hotkey can also be used to trigger this command.

Discard Changes

This command reverts all changes to the settings that were in
place when the BIOS Setup Utility was launched. The “F7” hotkey
can also be used to trigger this command.

Load Optimal Defaults

Load optimal default values for all the setup items. The default
optimized values are defined by the mainboard manufacturer to
provide optimized environment for a basic system. The “F9” hotkey
can also be used to trigger this command.

50

4

Driver Installation

51

MICROSOFT DRIVER SUPPORT

The VIA EPIA-M850 mainboard is compatible with Microsoft
operating systems. The latest Windows drivers can be
downloaded from the VIA Embedded website at
www.viaembedded.com.

For embedded operating systems, the related drivers can be
found in the VIA Embedded website at

www.viaembedded.com.

LINUX DRIVER SUPPORT

The VIA EPIA- M850 mainboard is highly compatible with many
Linux distributions.

Support and drivers are provided through various methods
including:

1. Drivers provided by VIA

2. Using a driver built into a distribution package

3. Visiting www.viaembedded.com for the latest updated

drivers

4. Installing a third party driver (such as the ALSA driver from

the Advanced Linux Sound Architecture project for
integrated audio)

For OEM clients and system integrators developing a product for
long term production, other code and resources may also be
made available. Contact VIA Embedded to submit a request.

52

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