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VT8501 Main Board

2-3-6 SW2 Pin5- Pin7: CPU Ratio Selector

SW2 is a 7-pin DIP switch, and Pin5- Pin7 is the CPU ratio selector. Please select
the right ratio according to your CPU and set details as below.

SW2

CPU Ratio

Off

1.5 and 3.5

Off

2.0

Off

2.5

Off

3.0

Off

4.0

4.5

Off

5.0

Off

5.5

6: 3LQ 3LQ

&38 5DWLR

Summary of Contents for 5MVP4

Page 1: ...5MVP4 AT Form Factor Main Board User s Manual...

Page 2: ...nscribed stored in a retrieval system or translated into any language or computer language in any form or by any means without prior written permission This manual and the information contained herein...

Page 3: ...ge without notice The manufacturer of the main board will not be held responsible for technical or editorial omissions made herein nor for the incidental or consequential damages resulting from its fu...

Page 4: ...Settings 12 2 3 1 JP1 Single CPU Voltage Selector 12 2 3 2 JBAT1 CMOS Status 13 2 3 3 JP3 PS 2 Mouse Selector 14 2 3 4 JP4 JP5 Audio Function Selector 15 2 3 5 SW2 CPU Vcore Selector 16 2 3 6 SW2 Pin5...

Page 5: ...nagement Setup 46 3 6 PNP PCI Configuration Setup 49 3 7 Integrated Peripherals 51 3 8 Supervisor User Password 56 3 9 IDE HDD Auto Detection 59 3 10 Load Setup Defaults 62 3 11 Save and Exit Setup 63...

Page 6: ...rmance eminently The main board integrated PCI mastering dual full duplex direct sound AC97 link compatible sound system Hardware soundblaster pro and hardware assisted FM blocks are included for Wind...

Page 7: ...wer Management Wake up events like Modem ring on which are the new inventions to enable PCs to be turned on over the network or modem These are also key benefits in PC operation new system setup and p...

Page 8: ...and other Pentium compatible processors CPU is not enclosed in the package Chipset VIA VT8501 VIA VT82C686A Memory DIMMs 3 of 168 pin double sided DIMMs Maxmium up to 768MB 3 3V SDRAM only Chipset su...

Page 9: ...ch is unable to be disabled Other graphic cards are not acceptable BIOS flash ROM BIOS Award full PnP Plug Play BIOS I O function 2 x PCI IDE devices 1 x FDC 2 x serial ports 16550 fast COM 1x paralle...

Page 10: ...VT8501 Main Board 5 1 3 System Block Diagram...

Page 11: ...rd in its original package until you are ready to install it In the package there are the main board manual cables for VGA IDE FDC RS232 PS 2 Sound Line in MIC Line out Game Port driver utility CD B M...

Page 12: ...e drivers CD driver is always updated with the latest version so the actual CD content may have some difference with the above picture 1 Main boards i440BX i440EX i440LX i430TX VIA VPX VP3 MVP4 SIS Si...

Page 13: ...Store Pro increases hard disk performance More concretely when working with hard disk of large block sizes it effectively enhances hard disk performance up to 50 and system performance up to 10 System...

Page 14: ...VT8501 Main Board 9 Chapter 2 Installation 2 1 Layout Reference 5 7 3 9...

Page 15: ...eference to CPU Speed Setup The setup of CPU speed is designed to a DIP switch form This helps the users to set CPU speed The main board supports Intel P54C P55C AMD K5 K6 K6 2 K6 III Cyrix M1 6x86L M...

Page 16: ...Off 6X86MII 366 MHz 100MHz 2 9 3 3V 2 5X Off On On On Off On Off Off On On On Off SW1 SW2 AMD CPU SYS Clock CPU Voltage CPU Ratio JP1 1 2 3 4 1 2 3 4 5 6 7 K5 PR100 PR133 66 MHz 3 52V 1 5X Off On Off...

Page 17: ...nt setups have different functions The following pages will tell how to set the jumpers under different circumstances 2 3 1 JP1 Single CPU Voltage Selector JP1 is a 2 pin selector to choose CPU with 3...

Page 18: ...from AC power Step 2 If the system uses AT ATX power pull out the AT ATX cable from power connector Step 3 Short the CMOS jumper by putting jumper cap on Pin 2 3 for a few seconds Step 4 Set JBAT1 to...

Page 19: ...VT8501 Main Board 14 2 3 3 JP3 PS 2 Mouse Selector JP3 is a 3 pin jumper providing PS 2 mouse function Set 2 3 if the system uses P S2 mouse and 1 2 without PS 2 mouse 3 36 PRXVH VHOHFWRU...

Page 20: ...is a 2 pin selector JP5 is a 4 pin selector Please select the right function as below JP4 JP5 AC97 1 2 1 2 On board Audio only AC97 MC97 1 2 1 2 3 4 On board Audio and AMR Slot only MC97 AMR OPEN 3 4...

Page 21: ...e Selector Please select the right CPU Vcore according to your CPU and set as below SW2 1 2 3 4 CPU Vcore off off off off 2 0V on off off off 2 1V off on off off 2 2V on on off off 2 3V off off on off...

Page 22: ...VT8501 Main Board 17 SW2 1 2 3 4 CPU Vcore off on off on 3 0V on on off on 3 1V off off on on 3 2V on off on on 3 3V off on on on 3 4V on on on on 3 5V...

Page 23: ...ch and Pin5 Pin7 is the CPU ratio selector Please select the right ratio according to your CPU and set details as below SW2 5 6 7 CPU Ratio Off Off Off 1 5 and 3 5 On Off Off 2 0 On On Off 2 5 Off On...

Page 24: ...1 Pin 4 is the CPU Frequency selector Select the right frequency according to your CPU and see details as below SW1 1 2 3 4 CPU Freq Off Off Off Off 60 0 MHz On Off Off Off 66 8 MHz Off Off Off On 75...

Page 25: ...here are many connectors on this main board Refer to the following pages for details 2 4 1 Front Panel Connectors Front panel has connectors as SOFT PWR PW LED KEYLOCK SPEAKER RESET HD LED and TB LED...

Page 26: ...then on again HD LED Hard Disk activity LED connector is a 2 pin keyed Berg strip It is used to connect to front panel Hard Disk LED TB LED with a 2 pin keyed Berg strip on case front panel indicates...

Page 27: ...ard PS 2 mouse on case back panel Please refer to more details as below COM1 COM2 The onboard serial port 1 and port 2 are the 9 pin D subminature male connector COM1 and COM2 COM1 and COM2 can be dis...

Page 28: ...VT8501 Main Board 23 LPT The onboard parallel port is a 25 pin female connector marked as LPT...

Page 29: ...VT8501 Main Board 24 USB Universal Serial Bus Universal Serial Bus connector marked USB is used to connect USB devices There are 2 USB connectors on this main board...

Page 30: ...VT8501 Main Board 25 AT Keyboard AT keyboard is a 5 pin connector...

Page 31: ...VT8501 Main Board 26 PS 2 Mouse PS 2 Mouse is a 5 pin connector to connect to mouse connector...

Page 32: ...The ATX power supply supports the function of the Soft Power On Momentary switch which connects on the front panel switch to the 2 pin SOFT PWR on the system board While the power switch on the back...

Page 33: ...er Supply Connector The main board supports standard AT and ATX power supply AT Power supply has 12 pins Pin Signal Pin Signal 1 POWER GOOD 7 GROUND 2 5V DC 8 GROUND 3 12V DC 9 5V DC 4 12V 10 5V DC 5...

Page 34: ...pplication software like LAPlink or WIN95 Direct Cable Connection user can transfer data to or from laptops notebooks PDA and printers This connector supports HPSIR ASKIR and Fast IR Attach Infrared m...

Page 35: ...CPU fan is a 3 pin connector and the main board supports 2 FAN connectors As the main board supports hardware monitoring the system can detect fan speed automatically The user may refer to Chapter 3...

Page 36: ...VT8501 Main Board 31 2 4 7 FLOPPY1 FLOPPY1 has 34 pins and is used to attach the floppy drive cable...

Page 37: ...E1 and IDE2 The main board supports 2 IDE connectors IDE1 and IDE2 IDE connectors have 40 pins IDE1 is the primary channel and IDE2 is the secondary Each channel supports 2 IDE devices and 4 channels...

Page 38: ...VT8501 Main Board 33 2 4 9 J3 Audio Connectors Game Port J3 is a 26 pin connector connecting to the enclosed cable for Game MIC Line in Line out...

Page 39: ...VT8501 Main Board 34 2 4 10 VGA Connector VGA connector is a 16 pin connector providing video functions In the package there is a back panel VGA cable connecting to this connector...

Page 40: ...ith DIMM module Chipset can support maximum memory up to 1 5 GBytes Insert the module as shown Due to different number of pins on either side of the breaks the module will only fit in the orientation...

Page 41: ...tion is made by moving cursor press any direction key to the item and press Enter key An on line help message is displayed at the bottom of the screen as cursor is moving to various items which provid...

Page 42: ...e installed in the system floppy drive type and the type of display monitor Memory size is auto detected by the BIOS and displayed for your reference When a field is highlighted direction keys to move...

Page 43: ...k drive heads read write are seated when the disk drive is parked 7 SECTOR the sector number of each track defined on the hard disk The range is from 1 to 64 8 MODE select AUTO to detect the mode type...

Page 44: ...rameters pressing F1 key to display help message of the selected item This setup program also provide 2 convenient ways to load the default parameter data from BIOS F6 or CMOS F7 area if shown data is...

Page 45: ...n for floppy disk drive second is hard disk drive and finally SCSI drive Default value is A C SCSI Options are as below A C SCSI C A SCSI C CDROM A CDROM C A D A SCSI E A SCSI F A SCSI SCSI A C SCSI C...

Page 46: ...Characters Per Second 10 10 Characters Per Second 12 12 Characters Per Second 15 15 Characters Per Second 20 20 Characters Per Second 24 24 Characters Per Second 30 30 Characters Per Second Typematic...

Page 47: ...ems like Windows 95 98 or Windows NT Non OS2 default OS2 Video BIOS Shadow It determines whether video BIOS will be copied to RAM However it is optional from chipset design Video shadow will increase...

Page 48: ...VT8501 Main Board 43 3 4 Chipset Features Setup...

Page 49: ...le or not Enabled default Disabled System BIOS cacheable define whether system BIOS area cacheable or not Enabled default Disabled Memory Hole this field enable a memory hole in main memory space CPU...

Page 50: ...range are forwarded to the AGP without any translation 128MB default 128MB 64MB 32MB 16MB 8MB 4MB OnCHip USB Enabled default Enabling this function adds the function of USB Keyboard Support Disabled U...

Page 51: ...VT8501 Main Board 46 3 5 Power Management Setup...

Page 52: ...gure their own power management Item Doze Mode Standby Mode Suspend Mode User Define Disable Disable Disable Max Saving 10 Sec 10 Sec 10 Sec Min Saving 1 Hour 1 Hour 1 Hour Video Off Method V H Sync B...

Page 53: ...isabled default 1 15Min Soft off by PWRBTN Delay 4 sec Instant off default PM Timers RTC Alarm Resume ATX Power supply only Disabled default Enabled Key in the date of current month and time of the da...

Page 54: ...VT8501 Main Board 49 3 6 PNP PCI Configuration Setup...

Page 55: ...and the system will automatically assign the above setup Reset Configuration Data Disabled default Enabled to reset Extended System Configuration Data ESCD when you exit setup if you have installed a...

Page 56: ...VT8501 Main Board 51 3 7 Integrated Peripherals...

Page 57: ...mary Master UDMA Primary Slave UDMA Onchip IDE Channel 1 Disabled Disable Secondary Master PIO Secondary Slave PIO Secondary Master UDMA Secondary Slave UDMA Enabled Enable Secondary Master PIO Second...

Page 58: ...ode 2 Mode 3 Mode 4 Secondary Slave PIO Auto default Mode 0 Mode 1 Mode 2 Mode 3 Mode 4 Primary Master UltraDMA Auto default Disable Primary Slave UltraDMA Auto default Disable Secondary Master UltraD...

Page 59: ...ntroller Enabled default Disabled Onboard Serial Port 1 3F8 IRQ4 2F8 IRQ3 3E8 IRQ4 2E8 IRQ3 Auto default Disabled Onboard Serial Port 2 3F8 IRQ4 2F8 IRQ3 3E8 IRQ4 2E8 IRQ3 Auto default Disabled UART 2...

Page 60: ...efault EPP Choosing this item another line is shown Parallel Port EPP Type EPP1 9 ECP Choosing this item there is another line shown ECP Mode Use DMA 3 default 1 ECP EPP Choosing this item another lin...

Page 61: ...Password Their difference is Supervisor Password this function allows you the right to change the options of setup menu User Password this function only allows you to enter the setup menu but not to...

Page 62: ...ase clear CMOS refer to JBAT1 CMOS status Step 3 Set Security Option in BIOS Features Setup After setting password enter Security Option in BIOS Features Setup There are 2 options Setup System Setup s...

Page 63: ...d first Step 2 Enter Password Setting After enter it shows Enter Password Press the Enter key instead of entering a new password when ENTER PASSWORD appears It will inform PASSWORD DISABLED PRESS ANY...

Page 64: ...standard CMOS setup You don t need the IDE HDD Auto Detection utility The BIOS will auto detect the hard disk size and model on display during post HARD DISK TYPE SIZE CYLS HEAD PRECOMP LANDZ SECTOR...

Page 65: ...HDD size will be 528 MB even though its physical size may be greater than that 2 LBA Logical Block Addressing Mode A new HDD accessing method to overcome the 528 MB bottleneck The number of cylinders...

Page 66: ...multiplied by 2 A reverse transformation process will be made inside int 12h in order to access the right HDD address the right HDD address 4 Maximum HDD Size No Cylinder 1024 X No Head 32 X No Secto...

Page 67: ...BIOS Features Setup and Chipset Features Setup screens There is no effect on the standard CMOS setup To use this feature highlight it on the main screen and press the Enter key A line will appear on s...

Page 68: ...VT8501 Main Board 63 3 11 Save Exit Setup The Save Exit Setup option will bring you back to boot up procedure with all the changes you have made which are recorded in the CMOS RAM...

Page 69: ...ain Board 64 3 12 Quit Without Saving The Quit Without Saving option will bring you back to normal boot up procedure without saving any data into CMOS RAM All of the old data in the CMOS will not be d...

Page 70: ...if PS 2 mouse is installed A0000 C7FFF 160K Available for hi DOS memory C8000 DFFFF 96K Available for hi DOS memory and adapter ROMs E0000 EEFFF 60K Available for UMB EF000 EFFFF 4K Video service rout...

Page 71: ...RTC ports CMOS I O ports 080 09F DMA register 0A0 0BF Interrupt controller slave 0C0 0DF DMA controller slave 0F0 0FF Math coprocessor 1F0 1FB Hard disk controller 278 27F Parallel port 2 2B0 2DF Grap...

Page 72: ...RAM refresh request Timer channel 2 speaker tone generator DMA channels DMA channel 0 available DMA channel 1 onboard ECP option DMA channel 2 floppy disk SMC chip DMA channel 3 onboard ECP default DM...

Page 73: ...timer 0 2 1 keyboard output buffer full 3 cascade for IRQ 8 15 4 serial port2 5 serial port1 6 parallel port 2 7 floppy disk SMC chip 8 parallel port 1 9 RTC clock 10 available 11 available 12 availa...

Page 74: ...status register d 0e diagnostic status byte 0f shutdown byte 10 floppy disk drive type byte 12 hard disk type byte 13 reserve 14 equipment type 15 base memory low byte 16 base memory high byte 17 ext...

Page 75: ...615 17 21MB 7 462 8 256 511 17 32MB 8 733 5 65535 733 17 31MB 9 900 15 65535 901 17 117MB 10 820 3 65535 820 17 21MB 11 855 5 65535 855 17 37MB 12 855 7 65535 855 17 52MB 13 306 8 128 319 17 21MB 14 7...

Page 76: ...8 11 65535 1023 17 87MB 32 925 9 65535 926 17 72MB 33 1024 10 65535 1023 17 89MB 34 1024 12 65535 1023 17 106MB 35 1024 13 65535 1023 17 115MB 36 1024 14 65535 1023 17 124MB 37 1024 2 65535 1023 17 17...

Page 77: ...DMA Controller 2 8237A 5 0F0 0FF i486 Math Coprocessor 1F0 1F8 Fixed Disk Drive Adapter 200 207 Game I O 20C 20D Reserved 21F Reserved 278 27F Parallel Printer Port 2 2B0 2DF Alternate Enhanced Graph...

Page 78: ...oller 3F8 3FF Serial Port 1 RS 232 C 6E2 6E3 Data Acquisition Adapter 1 790 793 Cluster Adapter 1 AE2 AE3 Data Acquisition Adapter 2 B90 B93 Cluster Adapter 2 EE2 EE3 Data Acquisition Adapter 3 1390 1...

Page 79: ...When VGA card and DIMM modules are not plugged well the system makes longer and constant beep sounds 2 BIOS ROM checksum error It indicates the checksum of the BIOS code is not right and system will a...

Page 80: ...ck out Unlock the key Normally when this message comes out check if there is anything mis placed on the keyboard Be sure nothing touches the keys 9 Memory test fails There will be more information to...

Page 81: ...VT8501 Main Board 76...

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