DFI C586VX User manual
C586VX
Rev. C+
System Board
User’s Manual
- C31060916 -
FCC Statement on Class B
This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to Part 15 of the FCC rules. These
limits are designed to provide reasonable protection against harmful in-
terference when the equipment is operated in a residential installation.
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. However,
there is no guarantee that interference will not occur in a particular in-
stallation. 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:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and the receiver.
•Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
•Consult the dealer or an experienced radio TV 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 oper-
ate the equipment.
2.Shielded interface cables must be used in order to comply with the
emission limits.
The manufacturer makes no warranties with respect to this documenta-
tion and disclaims any implied warranties of merchantability, quality, or
fitness for any particular purpose. The information in this document is
subject to change without notice. The manufacturer reserves the right to
make revisions to this publication and to make changes to any and/or
all parts of its content, at any time, without obligation to notify any per-
son or entity of such changes. Further, the manufacturer assumes no
responsibility for any errors that may appear in this document.
Table of Contents
Chapter 1: Introduction............................................................ 5
Features and Specifications.................................................. 6
Package Checklist .............................................................. 8
Chapter 2: Hardware Installation............................................... 9
Preparing the Area.............................................................. 9
Handling the System Board.................................................. 9
Installing the System Board.................................................10
Board Layout ....................................................................12
System Memory................................................................13
DIMM........................................................................13
SIMM........................................................................14
Cache Memory.................................................................16
Installing the Cache Module...........................................16
CPU Installation................................................................17
Jumper Settings for Intel CPUs........................................18
Jumper Settings for Cyrix 6x86 CPUs...............................19
Jumper Settings for AMD-K5 CPUs..................................20
Installing Upgrade CPUs................................................21
InstallingA Fan/Heatsink for Cyrix CPUs...........................23
Jumper Settings for CMOS Clear..........................................24
Jumper Settings for Display Type...........................................24
Built-in Ports.....................................................................25
Serial Ports.................................................................25
PS/2 Mouse Port..........................................................25
Parallel Port ................................................................26
Floppy Disk Drive Controller...........................................26
IDE Hard Disk Interface.................................................27
Universal Serial Bus Connectors......................................29
Installing Expansion Cards...................................................29
Chapter 3: Software Installation...............................................30
Award BIOS CMOS Setup Utility...........................................30
Standard CMOS Setup..................................................31
BIOS Features Setup....................................................35
Chipset Features Setup.................................................39
Power Management Setup.............................................40
PNP/PCI Configuration Setup..........................................42
4
Load BIOS Defaults......................................................44
Load Setup Defaults.....................................................44
Integrated Peripherials...................................................45
Supervisor Password....................................................47
User Password............................................................48
IDE HDD Auto Detection................................................48
HDD Low Level Format .................................................51
Save & Exit Setup........................................................52
Exit Without Saving.......................................................52
System Error Report ..........................................................52
Driver Installation...............................................................54
Chapter 4: Troubleshooting Checklist.............................................55
Appendix A: Types of Modules......................................................59
Appendix B: Memory and I/O Maps................................................60
Appendix C: Connectors..............................................................62
Appendix D: Row Address Strobe of DRAM and SDRAM...................65
5
The C586VX, equipped with a 321-pin Zero Insertion Force (ZIF) CPU
socket, is Pentium processor-class system board supporting Intel
Pentium CPUs running at 75MHz, 90MHz, 100MHz, 120MHz, 133MHz,
150MHz, 166MHz and 200MHz frequencies. The C586VX also supports
Cyrix 6x86 P120+/P133+/P150+/P166+ and AMD-K5 PR75/PR90/
PR100 CPUs.
The C586VX can support 8MB to 128MB of system memory. It is
equipped with a DIMM socket using x64 EDO, fast page mode or
SDRAM, and 4 SIMM sockets using EDO or fast page mode x32
DRAM. This system board also supports 256KB or 512KB pipeline burst
SRAM, and provides easy cache upgrades using a 256KB cache mod-
ule.
The C586VX design is based on the Peripheral Component Intercon-
nect (PCI) local bus and Industry Standard Architecture (ISA) stan-
dards. It is equipped with 4 dedicated PCI slots and 3 dedicated 16-bit
ISA slots.
The C586VX board has two bus master PCI IDE connectors. Bus mas-
tering reduces CPU use during disk transfer. This system board is also
equipped with two NS16C550A-compatible serial ports, an SPP/ECP/
EPP parallel port, a floppy disk drive controller, one PS/2 mouse port,
one PS/2 or AT keyboard connector, two USB connectors and one IrDA
header for wireless connectivity between your computer and peripheral
devices. .
Chapter 1
Introduction
6
Features and Specifications
Processor
•IntelPentium75/90/100/120/133/150/166/200MHz
•Future PentiumOverDrive Processor
•Cyrix6x86 P120+/P133+/P150+/P166+
•AMD-K5™ PR75/PR90/PR100
Chipset
•Intel 82430VX PCIset
Cache Memory
•256KB or 512KB pipeline burst, direct map write-back cache
installed on the system board
-Onboard 256KB: upgradeable with a 256KB cache module for a
maximum of 512KB cache
-Onboard 512KB: maximum cache memory (no cache module slot)
System Memory
•8MB to 128MB onboard memory
•One 168-pin DIMM socket using x64 EDO, fast page mode, or
SDRAM, 60ns or 70ns, 3.3V
•Four 72-pin SIMM sockets using EDO or fast page mode x32
DRAM, 60ns or 70ns, 5V
BIOS
•Award BIOS, Windows 95 Plug and Play compatible
•Flash EPROM for easy BIOS upgrades
Energy Efficient Design
•System power management supported
•CPU stopped clock control
•Hardware supports SMI green mode
•Microsoft/Intel APM compliant
•External power management switch supported
7
PCI IDE Interface
•PIO Mode 3 and Mode 4 Enhanced IDE (data transfer rate up to
16.6MB/sec.)
•DMA Mode 2 Bus Master IDE (data transfer rate up to 22.2MB/sec.)
•Bus mastering reduces CPU utilization during disk transfer
•ATAPI IDE CD-ROM supported
Integrated I/O
•Super I/O controller
•Two NS16C550A-compatible high speed UARTs
•One SPP/ECP/EPP parallel port
•Supports 360KB, 720KB, 1.2MB, 1.44MB, and 2.88MB floppy drives
CPU Socket
•321-pin ZIF socket (Intel Socket 7)
•Supports future low-voltage CPUs
Connectors
•2 USB connectors
•1 IrDA TX/RX connector
•2 serial ports
•1 parallel port
•2 IDE connectors
•1 floppy connector
•1 PS/2 mouse port
•1 PS/2 or AT keyboard connector
Expansion Slots
•4 dedicated PCI slots
•3 dedicated 16-bit ISA slots
PCB
•4 layers, Baby AT form factor
•25cm (9.84") x 22cm (8.66")
8
Package Checklist
The C586VX package contains the following items:
•The C586VX system board
•The C586VX user’s manual
•Serial, mouse and printer port cables
Option 1:
-One card-edge bracket with a 9-pin and 25-pin serial port cables
-One card-edge bracket with a 25-pin printer port cable and a PS/2
mouse port cable
Option 2:
-One card-edge bracket with two 9-pin serial port cables and a
PS/2 mouse port cable
-One 25-pin printer port cable for chassis mounting
•One 40-pin IDE hard disk cable
•One 34-pin floppy disk drive cable
•One IDE driver diskette
•Five jumper caps
•One card-edge bracket with two USB port cables (optional)
•Cache module (optional)
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.
9
Chapter 2
Hardware Installation
This chapter summarizes the steps to install the C586VX system board
into your system unit. It also includes a description of the area in which
you must work and directions for memory installation. Before installing
the system board, obtain the memory you plan to install. Refer to the
System Memory section for the number and type of memory modules
needed for the amount of memory you require.
Preparing the Area
Before unpacking the system board, make sure the location you have
selected is relatively free of dust and static electricity. Excessive expo-
sure to dust, static electricity, direct sunlight, excessive humidity, ex-
treme cold, and water can damage the operational capabilities of your
system board. Avoid placing the unit on surfaces such as carpeted
floors. These areas also attract static electricity which can damage
some circuits on your system board.
Make sure the power source has a properly grounded, three-pronged
socket. It is essential that the power connection be properly grounded
for correct functioning of your system board. For further protection, we
recommend that you use a surge suppressor. This will protect the sys-
tem board from damage that may result from a power surge on the
electrical line.
Move items that generate magnetic fields away from your system board
since magnetic fields can also damage your system board. Once you
have selected the ideal location, unpack the C586VX system board
carefully.
Handling the System Board
It is quite easy to inadvertently damage your system board even before
installing it in your system unit. Static electrical discharge can damage
computer components without causing any signs of physical damage.
You must take extra care in handling the system board to ensure
against electrostatic build-up.
10
Static Electricity Precautions
1.To prevent electrostatic build-up, leave the board in its anti-static
bag until you are ready to install it.
2.Wear an antistatic wrist strap.
3.Do all preparation work on a static-free surface with the system
board components facing up.
4.Hold the system board only by its edges. Be careful not to touch
any of the components, contacts or connections, especially gold
contacts, on the board.
5.Avoid touching the pins or contacts on all modules and connectors.
Hold modules and connectors by their ends.
Warning:
Electrostatic discharge (ESD) can damage your processor, disk drives,
add-in boards, and other components. Perform the upgrade instruction
procedures described at an ESD workstation only. If such a station is
not available, you can provide some ESD protection by wearing an anti-
static wrist strap and attaching it to a metal part of the system chassis.
If a wrist strap is unavailable, establish and maintain contact with the
system chassis throughout any procedures requiring ESD protection.
Installing the System Board
If you are installing the C586VX system board, the following outlines the
basic installation steps. Before installing the system board into your sys-
tem unit, you should prepare the tools you will need.
You will need:
•One medium size, flat-bladed screwdriver
•One medium Phillips screwdriver
•One needle-nosed pliers
•One small nutdriver
1.Unlock your system unit. Turn off the power and disconnect all
power cords and cables.
11
2.Remove the system unit cover. Refer to the manufacturer’s instruc-
tions if necessary.
3.Detach all connectors from the old system board and remove ex-
pansion cards seated in any expansion slots.
4.Loosen the screws holding the original system board and remove
the board from the system. Save the screws.
5.Remove the C586VX from its original packing box. Be careful to
avoid touching all connectors and pins on the board. Please refer to
the handling instructions on pages 9-10 for proper handling tech-
niques.
6.Insert the memory modules into the memory banks on the C586VX.
The quantity and location of the memory modules depends on the
memory configuration and type of modules you intend to use.
7.Insert the cache module, if any, into the cache module slot on the
C586VX. Refer to the Cache Memory section for upgrading your
cache memory.
8.Install the CPU. Be sure pin 1 of the CPU is aligned with pin 1 of
the socket.
9.Set the corresponding jumpers.
10.Install the prepared C586VX system board into the case and re-
place the screws.
11.Reinstall all cards and connectors and replace the system unit
cover. Reconnect all power cords and cables.
12
Board Layout
square denotes pin 1
PBSRAM = Pipeline Burst SRAM
13
System Memory
The C586VX system board supports two kinds of memory modules:
DIMM and SIMM. DIMM, which uses SDRAM, performs better than
SIMM, which uses DRAM. Refer to page 12 for the locations of the DIM
and SIM sockets.
Note:
If a DIM module is installed in the DIMM socket, you can install SIM
modules in Bank 0 only. Do not install any SIM modules in Bank 1.
DIMM
The 168-pin DIMM (Dual In-line Memory Module) socket uses x64 EDO,
FPM and SDRAM. The C586VX system board can support 8MB to
16MB memory using 1MBx64 or 2MBx64 DIMM.
Installing the DIM Module
A DIM module simply snaps into a socket on the system board. Pin 1 of
the DIM module must correspond with Pin 1 of the socket.
1.Pull the “tabs” which are at the ends of the socket to the side.
2.Position the DIMM above the socket with the “notches” in the mod-
ule aligned with the “keys” on the socket.
3.Seat the module vertically into the socket. Make sure it is com-
pletely seated. The tabs will hold the DIMM in place.
Pin 1
Notch
KeyTab
Tab
14
SIMM
The SIMM (Single In-line Memory Module) sockets are divided into two
banks on the system board, Bank 0 and Bank 1. Each bank consists of
2 SIMM sockets.
You will need either 2 or 4 pieces of SIM modules, depending on the
amount of memory you intend to install. The system board will not work
if you install 1 or 3 pieces. Make sure you insert the same type of
SIMMs in one bank. You can install SIMMs in either of the banks, Bank
0 or Bank 1, but you must populate one bank first before going to the
next bank.
The C586VX system board can support 8MB to 128MB of memory us-
ing 1MBx32, 2MBx32, 4MBx32, or 8MBx32 72-pin SIMMs. The table
below shows the supported SIM modules and their corresponding
memory sizes.
The table below summarizes the bank locations and modules needed
for the corresponding memory sizes.
SIMMs
1MBx32
2MBx32
4MBx32
8MBx32
Memory Size
4MB
8MB
16MB
32MB
MemorySize
8MB
8MB
16MB
16MB
16MB
Bank0
SIMM1
1MBx32
—
2MBx32
—
1MBx32
SIMM2
1MBx32
—
2MBx32
—
1MBx32
SIMM4
—
1MBx32
—
2MBx32
1MBx32
Bank1
SIMM3
—
1MBx32
—
2MBx32
1MBx32
15
SIMM2
1MBx32
2MBx32
4MBx32
2MBx32
1MBx32
4MBx32
2MBx32
4MBx32
8MBx32
—
4MBx32
1MBx32
8MBx32
2MBx32
8MBx32
4MBx32
8MBx32
8MBx32
SIMM1
1MBx32
2MBx32
4MBx32
2MBx32
1MBx32
4MBx32
2MBx32
4MBx32
8MBx32
—
4MBx32
1MBx32
8MBx32
2MBx32
8MBx32
4MBx32
8MBx32
8MBx32
MemorySize
24MB
24MB
32MB
32MB
40MB
40MB
48MB
48MB
64MB
64MB
64MB
72MB
72MB
80MB
80MB
96MB
96MB
128MB
Bank0
SIMM4
2MBx32
1MBx32
—
2MBx32
4MBx32
1MBx32
4MBx32
2MBx32
—
8MBx32
4MBx32
8MBx32
1MBx32
8MBx32
2MBx32
8MBx32
4MBx32
8MBx32
Bank1
SIMM3
2MBx32
1MBx32
—
2MBx32
4MBx32
1MBx32
4MBx32
2MBx32
—
8MBx32
4MBx32
8MBx32
1MBx32
8MBx32
2MBx32
8MBx32
4MBx32
8MBx32
Installing a SIM Module
A SIM module simply snaps into a socket on the system board. Pin 1 of
the SIM module must correspond with Pin 1 of the socket.
notch
key
16
1.Position the SIMM above the socket with the “notch” in the module
aligned with the “key” on the socket.
2.Seat the module at a 45° angle into the bank. Make sure it is com-
pletely seated. Tilt the module upright until it locks in place in the
socket.
Cache Memory
The C586VX system board can support 256KB or 512KB pipeline burst,
direct map write-back cache SRAM. Your system board may come with
256KB or 512KB cache mounted at locations U22 and U23 of the sys-
tem board.
If your system board is mounted with 256KB cache, you may upgrade
your cache memory to 512KB by installing a 256KB cache module in
the 160-pin cache module slot (SSM1). Refer to page 12 for the loca-
tions of the SRAMs and cache module slot. If your system board is
mounted with 512KB cache, which is the maximum cache memory sup-
ported by the system board, the cache module slot will not be installed
on the system board.
Warning:
We highly recommend that you use the T2BSM32-256 cache module. If
you are using a cache module other than the one recommended above,
make sure your cache module meets the Intel COAST 2.x specification.
Severe damage might occur on the cache module or system board if
you insert modules other than those specified above.
Installing the Cache Module
Locate the 160-pin cache module slot on the system board (SSM1).
See page 12 for the location. Position the cache module above the slot.
Make sure pin 1 of the cache module is aligned with pin 1 of the slot.
Carefully slide the module into the slot. Press firmly on the top of it to
seat it properly.
17
Note:
With the cache module installed in the cache module slot, the compo-
nents on the solder side of the add-in card in PCI Slot 3 and the com-
ponents on the component side of the add-in card in PCI Slot 2 must
not protrude more than 5mm.
CPU Installation
The C586VX allows for easy installation of CPUs. Make sure all jumpers are
set correctly before applying power or you may damage the CPU or system
board. Please see the jumper settings on the following pages. Use the
needle-nosed pliers to move the jumpers if necessary. The table below
shows the External Bus Clock of the CPUs supported by the system board
and their corresponding PCI Clock and Bus Clock.
External Bus Clock
50MHz
55MHz
60MHz
66MHz
PCI CLK
25MHz
27.5MHz
30MHz
33MHz
Bus CLK
8.333MHz
9.1666MHz
7.5MHz
8.25MHz
18
JP6
1-2 On, 3-4 On
1-2 On, 3-4 Off
1-2 Off, 3-4 On
Jumper Settings for Intel CPUs
JP11
JP6
Intel CPUs
75/90/100MHz
120/133MHz
150/166MHz
200MHz
Freq. Ratio
1.5x
2x
2.5x
3x
JP8
1-2 Off, 3-4 Off
1-2 On, 3-4 Off
1-2 On, 3-4 On
1-2 Off, 3-4 On
JP8
JP9
21
4
3
1
6 2
3
5
41
6 2
3
5
4
JP20
21
4
3
2
1
4
3
JP21
Voltage
2.5V
2.8V
2.9V
3.3V*
3.5V
JP9
1-2 On
1-2 On
1-2 On
1-2 On
3-4 On
JP11
1-3, 2-4 On
1-3, 2-4 On
1-3, 2-4 On
3-5, 4-6 On
3-5, 4-6 On
JP20
5-6 On
3-4 On
1-2 On
3-4 On
3-4 On
JP21
1-2, 3-4 Off
1-2, 3-4 Off
1-2, 3-4 Off
1-2, 3-4 On
1-2, 3-4 On
* Default
1
3
2
4
Intel CPUs
75MHz
90/120/150MHz
100/133/166/
200MHz
Ext. Bus Clk
50MHz
60MHz
66MHz
Warning:
The default setting of JP9, JP11, JP20 and JP21 is
3.3V. If the voltage of your CPU is not 3.3V, make
sure you set JP9, JP11, JP20 and JP21 according to
the voltage of your CPU, otherwise, your system will
hang.
19
Jumper Settings for Cyrix 6x86 CPUs
JP11
JP6
Cyrix CPUs
P120+/P133+/
P150+/P166+
Freq. Ratio
2x JP8
1-2 On, 3-4 Off
JP8
JP9
21
4
3
1
6 2
3
5
41
6 2
3
5
4
JP20
21
4
3
2
1
4
3
JP21
Voltage
2.5V
2.8V
2.9V
3.3V*
3.5V
JP9
1-2 On
1-2 On
1-2 On
1-2 On
3-4 On
JP11
1-3, 2-4 On
1-3, 2-4 On
1-3, 2-4 On
3-5, 4-6 On
3-5, 4-6 On
JP20
5-6 On
3-4 On
1-2 On
3-4 On
3-4 On
JP21
1-2, 3-4 Off
1-2, 3-4 Off
1-2, 3-4 Off
1-2, 3-4 On
1-2, 3-4 On
* Default
1
3
2
4
Cyrix CPUs
P120+
P133+
P150+
P166+
Ext. Bus Clk
50MHz
55MHz
60MHz
66MHz
JP6
1-2 On, 3-4 On
1-2 Off, 3-4 Off
1-2 On, 3-4 Off
1-2 Off, 3-4 On
Warning:
The default setting of JP9, JP11, JP20 and JP21 is
3.3V. If the voltage of your CPU is not 3.3V, make
sure you set JP9, JP11, JP20 and JP21 according to
the voltage of your CPU, otherwise, your system will
hang.
20
JP6
1-2 On, 3-4 On
1-2 On, 3-4 Off
1-2 Off, 3-4 On
Jumper Settings for AMD-K5 CPUs
JP11
JP6
JP8
JP9
21
4
3
1
6 2
3
5
41
6 2
35
4
JP20
21
4
3
2
1
4
3
JP21
Voltage
2.5V
2.8V
2.9V
3.3V*
3.5V
JP9
1-2 On
1-2 On
1-2 On
1-2 On
3-4 On
JP11
1-3, 2-4 On
1-3, 2-4 On
1-3, 2-4 On
3-5, 4-6 On
3-5, 4-6 On
JP20
5-6 On
3-4 On
1-2 On
3-4 On
3-4 On
JP21
1-2, 3-4 Off
1-2, 3-4 Off
1-2, 3-4 Off
1-2, 3-4 On
1-2, 3-4 On
* Default
1
3
2
4
AMD CPUs
PR75 75MHz
PR90 90MHz
PR100 100MHz
Ext. Bus Clk
50MHz
60MHz
66MHz
Warning:
The default setting of JP9, JP11, JP20 and JP21 is
3.3V. If the voltage of your CPU is not 3.3V, make
sure you set JP9, JP11, JP20 and JP21 according to
the voltage of your CPU, otherwise, your system will
hang.
AMD CPUs
PR75 75MHz
PR90 90MHz
PR100 100MHz
Freq. Ratio
1.5x JP8
1-2 Off, 3-4 Off
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