Acorp 6BX86 User manual

The information presented in this publication has been
made carefully for reliability; however, no responsibility
is assumed for inaccuracies. Specifications are subject
to change without notice.
IBM, PC/AT, and PC/XT are trademarks of Interna-
tional Business Machines Corporation.
Pentium is a trademark of Intel Corporation
AWARD is a registered trademark of Award
Sofftware Inc.
MS-MOS and WINDOWS NT are registered trade-
marks of Microsoft Corporation.
Trademarks and/or registered trademarks are the
properties of their respective owners.
User's Manual Version 1.4
6BX/ZX/VIA86/VIA86P

Table of Contents
Chapter 1 Introduction ................................................ 1
How this manual is organized ............................. 1
Package checklist ................................................ 2
Chapter 2 Features ...................................................... 3
Features of the mainboard ........................... 3
The mainboard layout ............................... 6
Chapter 3 Installation .................................................. 7
System Installation Setups ........................ 9
Static Electricity Precaution ...................... 9
Jumper Settings ........................................ 10
System Memory (DIMM moduleS) ............ 14
DIMM Memory Installation ........................ 15
Wake Up On LAN ....................................16
Central Processing Unit (CPU) ................ 17
Removing the Processor ......................... 20
Installing OEM Processor ........................ 21
Clearance Requirements .......................... 23
Fan Exhaust .............................................. 23
External Connectors ................................ 24

Chapter 1 Introduction / 1
1
Chapter 1
Introduction
How This Manual is Organized
This manual is divided into the following sections:
Chapter 1 Introduction : Manual information and checklist.
Chapter 2 Features : Information and Specifications concern-
ing this mainboard.
Chapter 3 Installation : Instructions on setting up the board.

2 / Chapter 1 Introduction
Package Checklist
Please check that your package is complete . If you discover any item
damaged or missing , please contact with your retailer immediately.
The 6BX86 / 6ZX86 / 6VIA86 / 6VIA86P mainboard.
Retention Mechanism & Heatsink Support.
1 x IDE ribbon cable.
1 x UDMA66 IDE ribbon cable. ( option )
1 x floppy ribbon cable.
6BX86 / 6ZX86 / 6VIA86 / 6VIA86P support software:
- Flash Memory Write utility to update the FLASH BIOS.
- Desktop Management Interface (DMI) utility.
- MD9241 Hardware monitor AP. ( option )
This user's Manual

Chapter 2 Features / 3
2
Chapter 2
Features
Features of the 6BX86 / 6ZX86 / 6VIA86 / 6VIA86P M/B
The 6BX86 / 6ZX86 / 6VIA86 / 6VIA86P is designed for the PC user's
who want many new key features processed by the fastest CPU in a
economic package. This mainboard :
New general CPU support :
- Solt1 support to 866 MHz processor.
- Socket 370 Celeron ( 533MHz ,677MHz(1.5V) )processor.
- Socket 370 Coppermine (500MHz~800MHz)processor.
Intel Chipset :
Intel 440 BX PCIsetTM /Intel 440 BX PCIsetTM /VIA APOLLO
PRO/PRO133 chips with I/O subsystems.

4 / Chapter 2 Features
Biggest memory capacity :
6BX86/6VIA86/6VIA86P is equipped with three DIMM
socket to support (16MB, 32MB, 64MB, 128MB,256MB) 168
pin 3.3v EDO RAM Module Maximum memory up to 768MB
or 3.3v SDRAM. Maximum memory up to 768MB.
6ZX86 is equipped with two DIMM socket to support 168
pin 3.3v SDRAM SPD(Special Presence Detect).Maximum
memory up to 512MB.
AGP for fast VGA solution :
AGP (Accelerator Graphic Port) will enhance & improve
display performance and Application. The bus speed is 66
MHz 2x Mode.
ISA & PCI Expansion Slot :
Provide two 16 bit ISA, and three 32 bit PCI slots.
PCI Bus Master IDE Controller :
Comes with an on-board PCI Bus Master IDE controller
with two connectors that supports four IDE devices in two
channels, enable to transfer data at much faster rate, and
supports Enhanced IDE devices such as Tape Backup and
CD-ROM devices (ATAPI). This controller supports PIO
modes 3 and 4 (16.6MB/sec.) , and Ultra DMA 33/66 (only
6VIA86P) (33MB/66MB Sec.) , also supports ZIP100 and
LS-120. BIOS supports IDE CD-ROM or SCSI bootup.
Super Multi-I/O :
Provides two high-speed UART2 serial compatible ports
(match NS16C550A compatible) and one parallel port with
SPP,EPP and ECP capabilities. UART2 can also be directed
from COM2 to the Infrared Module for wireless connections.
Two floppy drives of either 5.25" or 3.5" (1.25MB,1.44MB or
2.88MB) are also supported without an external card.

Chapter 2 Features / 5
CPU built-in Level 2 Cache :
0K/128K/256K/512KB Pipeline Burst Level 2 cache in
the Pentium II/III Single Edge Contact (SEC) cartridge.
Desktop Management Interface(DMI) :
Supports DMI through BIOS which allows hardware to
communicate within a standard protocol and create a higher
level of capability. (Required DMI- enabled components).
Advanced Configuration of Power management Interface
(ACPI) :
Support ACPI function BIOS which allows System to con-
trol seriously power management.
Thermal detect (MD9241) :(Optional)
The system's BIOS will sense CPU's temperature through
MD9241 on board. The User can watch what current tem-
perature of CPU is & current CPU FAN status is from Win
System. The user will watch the indication on Win 95/98
environment.
IrDa Port :
Support this serial fast communication up to 115.2Kbps.
Support Power on by modem/ Alarm on/ LAN Wake Up :
Support System power up from Modem ring up or timer
or LAN Wake Up of System. Required enabled in Ring on
by modem and Alarm on and LAN Wake Up in BIOS.
To support CPU FAN ON/OFF and LED indicator under SUS-
PEND mode.
To support CPU temperature and Alarm system by warning
with sound.

6 / Chapter 2 Features
The 6BX86 / 6ZX86 / 6VIA86 / 6VIA86P M/B Layout
JP8
FAN1
FAN2
FAN3
JP1
6ZX86only two DIMM sockets

Chapter3 Installation / 7
Installation
3
Chapter 3
Jumper
Jumper Refer to page
JP1 - CPU BUS frequency selection 11
FAN1 - FAN CONN. for AGP 25
FAN2 - FAN CONN. for CPU 25
FAN3 - FAN CONN. for CHASSIS 25
JP7 - Real time Clock RTC clean 10
JP6 - LAN Card Wake Up 16

8 / Chapter 3 Installation
Expansion Slot Which page
SEC (Single Edge Connector) CPU SLOT 1 17
168 pin DIMM Socket 15
AGP (Accelerator Graphic port) SLOT
PCI SLOT 1,2,3 -32bits PCI SLOT
ISA SLOT1,2 - 16bits ISA SLOT
Connectors Refer to page
PW1/PW2 - ATX/AT Power Connector 30
PS2/Mouse - PS/2 Mouse port. 25
KB1 - AT Keyboard port 25
J1 - USB Port 25
COM1 - COM 1 serial port 25
PRINT - Parallel port 25
COM2 - COM 2 serial port 25
FDC - FLOPPY connector 25
IDE1 - Primary IDE connector 27
IDE2 - Secondary IDE connector 27
JP5 - HDD LED 27
JP5 - Reset Switch 29
JP5 - Speaker Connector 29
JP5 - Power LED 28
PW-BN - ATX Power switch 30
J2 - IrDA connector 29

Chapter3 Installation / 9
System Installation Setup
Before using your computer, you must finish the following steps:
1. Set jumpers on mainboard
2. Install SDRAM module.
3. Install the Pentium II/III Processor.
4. Connect Ribbon Cables, Cabinet Wires, and Power supply.
5. Install Add on Cards.
6. Setup the BIOS software.
Static Electricity Precaution
Keep the mainboard and other system components in their anti-
static packaging until you are ready to install them.
Do all preparative work on a static-free surface with the main
board components facing up.
Unplug your computer when working on the inside.
Wear an Anti-static wrist strap.
Hold the system components, boards or cards by its edges only.
Be careful not to touch any of IC chips, circuitry, contacts or
connections, especially gold contacts on the mainboard.

10 / Chapter 3 Installation
Jumper Settings
Jumpers
Several hardware setting are made through the use of jumper caps to
connect jumper pins (Jxx) on the mainboard. See " Map of the
mainboard" for locations of jumpers.
The jumper settings will be described numerically such as [----], [1-
2], [2-3] for no connection, connect pins 1 & 2, and connect pins 2
& 3 respectively. Pin 1 for our mainboard is always on top one or
on the left when holding the mainboard with the keyboard away from
yourself. "P1" is written besides pin 1 on jumper with three pins. The
jumpers will also be shown graphically such as to connect pin
1&2 and to connect 2&3. Jumpers with two pins will be shown
as for Short (on )and for Open (off).For manufacturing
simplicity it may be sharing pins from other groups. Use the diagrams
in this manual instead of following the pin layout on the board. Set-
tings with two jumper numbers require that both jumpers be moved
together. To connect the pin, simply place a plastic jumper cap over
the two pins as diagrammed.
Real Time Clock (RTC) RAM - JP7 :
The CMOS RAM is powered by the onboard button cell battery. To
clear the RTC data:
(1)Turn off your computer, (2) Move this jumper to "3-4Pin Clear
Data", (3) Move the jumper back to "Default", (4) Turn on your
computer, (5) Hold down <Delete > during bootup and enter BIOS
setup to re-enter user Preferences.
Intel
Intel
i
1
KB1
JP1
J4
i
JP5
1
18
9
10
1
J5
J1
J2
J3
A
B
C
D
1
JP6

Chapter3 Installation / 11
Programming JP7 CMOS clear
Enabled ( clear CMOS) [3-4]
Normal [2-3] (Default)
External Battery [1-4]
ATX Power Buttom Switch- PW-BN :
System Temperature FAN Connector - FAN1 , FAN2 :
CPU External (BUS) Frequency Selection (see Table3-1) :
The CPU External (Bus) Frequency has something wrong with
66/100Mhz. If you want to change External (Bus) Frequency ,
Please follow these steps :
First enter/choose "BIOS" System. Second, choose " CPU Host clock"
which is under the "Chipset Feature Setup ".Third ,you can change the
Frequency with the follaring numbers such as 66,75,83,100,112and
133 for replacement,Default is auto Sensor.
PW-BN
JP8

12 / Chapter 3 Installation
CPU to BUS Frequency Ratio- JP1 :
These jumpers set the frequency ratio between the Internal frequency
of the CPU and the External frequency (Called the BUS Clock)
within the CPU. These must be set together with the above jumpers
CPU External (BUS) Frequency Selection.
Set the jumpers by the Internal speed of the Intel CPU as follows:
CPU ModelRatio BUS Freq JP1
233MHZ 3.5X 66.6MHZ
266MHZ 4.0X 66.6MHZ
300MHZ 4.5X 66.6MHZ
333MHZ 5.0X 66.6MHZ
366MHZ 5.5X 66.6MHZ
400MHZ 6.0X 66.6MHZ
CPU ModelRatio BUS Freq JP1
350MHZ 3.5X 100 MHZ
400MHZ 4.0X 100 MHZ
450MHZ 4.5X 100 MHZ
500MHZ 5.0X 100 MHZ
550MHZ 5.5X 100 MHZ
600MHZ 6.0X 100 MHZ
JP1
ABCD
ABCD
ABCD
ABCD
ABCD
ABCD
ABCD
ABCD
ABCD
ABCD
ABCD
ABCD

Chapter3 Installation / 13
CPU ModelRatio BUS Freq JP1
600MHZ 4.5X 133MHZ
666MHZ 5.0X 133MHZ
733MHZ 5.5X 133MHZ
800MHZ 6.0X 133MHZ
Table 3-1
ABCD
ABCD
ABCD
ABCD
NOTE:
Most of the CPU frequency are locked by the manufacturer.
This motherboard is able to auto-detect the CPU frequency.

14 / Chapter 3 Installation
System Memory ( DIMM Module)
This 6BX86/6VIA86/6VIA86P mainboard supports, three 168 pins
DIMM ( Dual Inline Memory Module) (6ZX86 supports two DIMMs)
of 16 MB, 32 MB, 64 MB, 128 MB ,256MB to form a memory size
between 16MB to 256MB.
The DRAM can be either 45ns,50ns,or 60ns 3.3v SDRAM,and 3.3v
Enhanced Data Output (EDO) RAM.
Install memory in any or all Banks in Combination:
Bank Memory module
DIMM 1 16MB,32MB,64MB,128MB,256MB
( Bank 0-1 ) 168 pin,3.3v SDRAM / EDO RAM
DIMM 2 16MB,32MB,64MB,128MB,256MB
( Bank 2-3 ) 168 pin 3.3v,SDRAM / EDO RAM
DIMM 3 16MB,32MB,64MB,128MB,256MB
( Bank 4-5 ) 168 pin 3.3v,SDRAM / EDO RAM
Total System Memory(Max 768MB)
Note :


The DIMM Slot does not support any 5v EDO DIMM
module.


The DIMM Slot does not support any 5v SDRAM
DIMM module.


Memory speed setup is required through "Auto Con-
figuration" in BIOS chipset Setup of BIOS SOFTWARE.
If several speed memorious are used, You must set Auto
Configuration to low. Example If both 50ns, 60ns are
used, Please set Auto configuration to 60ns.


It's allowed any DIMM module put in any DIMM slot.
It's allowed there are different capacity DIMM module
in all DIMM slot.

Chapter3 Installation / 15
DIMM Memory Installation
Insert the module (s) as shown. Because the number pins are differ-
ent on either side of the breaks,the module will only fit in the ori-
entation as shown. SDRAM DIMM modules have different pin con-
tacts on each side and therefore have a higher pin density.
168 Pin DIMM Memory Socket
The Dual Inline Memory Module (DIMM) memory module must
be 3.3v Extended Data Output (EDO) DRAM or SDRAM. You can
identify the type of DIMM module by the illustration below:
168 Pin DRAM DIMM Notch Key Definitions
The notch on the DIMM module will shift between left, center, or
right to identify the type and also to prevent the wrong type to be
inserted into the DIMM slot on the Mainboard. You must ask your
retailer for Specifications before purchasing.
Four clock signals are supported on this mainboard
JP8

16 / Chapter 3 Installation
Wake Up On LAN (3-pin WOL)
This connector connects LAN cards and a Wake On LAN output.
When the system is in soft-off mode LAN activity will power on
the system.
IMPORTANT:
Requires an ATX power supply with at least
720ma +5 volt standby power.
JP8

Chapter3 Installation / 17
Central Processing Unit (CPU)
This main board provides a Single Edge Contact (SEC) slot for
Pentium II/III processor packaged in an SEC cartridge. The SEC
slot is not compatible with other non-Pentium II/III Processors.
Installing the Retention Mechanism
The Mainboard package includes a Retention Mechanism. The Re-
tention Mechanism is used to hold an Intel Pentium II/III Processor
to the Intel Slot 1 connector. Make sure the system board is on a
workbench (not in a chassis).
To install the Retention Mechanism, follow the steps below:
1. The Retention Mechanism package includes a Retention Mecha-
nism with captive nut and four captive screws.
2. Hold the Retention Mechanism upright and position it above the
Intel Slot 1 connector.
3. Insert the captive screws attached from underneath the
mainboard as shown, and four screws 2 mount bridges directly.
Note:


Don't forget to attach the screw seal before
inserting.


Nut is built into the base of Retention
Mechanism. It's convenient to tighten screw
directly.

18 / Chapter 3 Installation
Installing Boxed Processor
1. Mount the two black plastic pegs onto the system board. /these
pegs will be used to attach
the fan heatsink supports.
Notice that one hole and
the base of one peg are
larger than the other hole
and peg base. Push each peg
into its hole firmly until
you hear it “ Click” into
place.
2. Slide a black plastic heatsink support onto each outside edge of
the fan heatsink, making sure that the hole and clip are on the
outside edge of the support.(If the supports are reversed, the
holes will not line up with the pegs on the main board). Slide
each heatsink support toward the center of the processor until
the support is seated in the outside groove in the fan housing.
Captive nut
Hole