American Megatrends MAN-772 manual Value Description

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Step 3 Configure CPU, Continued

VR Set Pentium CPU Voltage Install Intel Pentium CPUs that adhere to either the standard or VRE voltage specifications. VR is a 10-pin berg that sets CPU voltage. VR1 is near the top of the CPU socket.

Intel Pentium CPU Markings The markings on the bottom side of the Intel Pentium CPUs are:

xxxxxxxxxx xxxxxxxxxx BP80502-SSS Sxxxx/RSS

xxx

R is the voltage range identifier:

R value	Description
V	VRE voltage range
S	Standard voltage range

Cont’d

18Apollo IV PCI Pentium ISA Motherboard User’s Guide

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Contents Apollo IV Pentium PCI ISA MotherboardGuide Ii Apollo IV PCI Pentium ISA Motherboard User’s Guide Preface Phone Number CharacteristicsTechnical Support Packing List Static ElectricityOverview CPU Manufacturer Supported CPU SpeedsChipset Type of System Supported System Memory Socket Overview Floppy Fast ATAUltra DMA/33 Parallel PortMouse CPU External Clock Frequency PCI Expansion Slot FrequencyDMI InfraredApollo IV Dimensions Motherboard Height RestrictionsInstallation Steps Step ActionApollo IV Motherboard Layout Unpack the Motherboard Step ActionPWR1 Setting Description Set JumpersAvoid Static Electricity Flash ROM TypeConfigure CPU ExternalFor P54C P55CSummary of Jumper Setting for Intel Pentium CPUs P54CSummary of Jumper Setting for AMD K5 and K6 CPUs Value Description AMD-K6 Step Action Type of System Memory Supported System Memory Socket Install MemorySupported System Memory Configurations Total SystemMemory Display Install the Motherboard Should supply these partsInstall Motherboard Connector Attach CablesAttach Cables Power Connector Pinout Pin DescriptionMotherboard PinPin Description Pins 12 13 14 Connector Signal DescriptionsPin Description Signal Description Connect Onboard I/OPin Signal Description SLCTIN#Attach Floppy Drive Twist in Floppy Cable Floppy Connector PinoutPin Use Attach IDE Drive Attach IDE Drive Primary Pinout The Primary IDE pinout is Secondary IDE Pinout The Secondary pinout is Test and Configure Page Winbios Setup Using the Keyboard with Winbios Setup Using a Mouse with Winbios SetupKeystroke Action Winbios Setup Menu Standard Setup Drive Type How to ConfigureParameter Description Hard Disk Drive Types 65535 1223 152 MBAdvanced Setup Setting DescriptionAdvanced Setup Type of Armd Device Drive Emulation Configured Advanced Setup Disabled Chipset Setup Power Management Setup Power Management Setup Cont’d PCI/PnP SetupSnoop Bit Action Option Optimal Default Fail-Safe Default DMA ChannelIDE Secondary IRQ options Peripheral SetupPrimary Prefetch Offboard PCI IDE Primary IRQPeripheral Setup Setting Description EPP VersionAmibios Password Support SecuritySetting a Password Changing a PasswordAnti-Virus Utility Optimal OriginalFail-Safe Programming the Flash ROM Programming the Flash EpromProgramming the Flash ROM Step Expected behaviorNumber of Beeps Description Bootblock Code Checkpoint Codes Code Description