Abit AT6 User manual

AT6 PentiumII Mainboard
USER’SMANUAL
TableofContents
Chapter1IntroductionofAT6Features
¬Specifications..................................................…….1-1
-Layoutdiagram.......................................................1-3
®Thesystemblockdiagram........................................1-4
Chapter2InstallingtheMainboard
¬InstallingtheMainboardtotheCasing....................2-3
-StandardExternalConnectors.................................2-4
®JumperandSwitches..............................................2-11
¯InstallationoftheCPU..........................................2-13
°InstallingSystemMemor ¡i DRAMMemory ¡j ...2-16
Chapter3IntroductionofBIOS
¬CPUSetup ¡iCPUSOFTMENU™¡j ................3-3
-StandardCMOSSetup Menu..............................3-7
®BIOSFeaturesSetup Menu.................................3-9
¯ChipsetFeaturesSetup Menu............................3-15
°PowerManagementSetup Menu.......................3-17
±PCI&OnboardI/OSetup .................................3-22
²LoadBIOSDefaults..........................................3-26
³LoadSetup Defaults.........................................3-26
´PasswordSetting.................................................3-27
µIDEHDD AutoDetection.................................3-28
Chapter4BusMasterIDEDriver

AppendixAQuickInstallation
AppendixBGeneralDiscussionaboutHDD Installation
AppendixCTechnicalSupport
AppendixDFlashBIOSUserInstructions
AppendixEHowtoinstall UltraDMA/33 drive
AppendixFHowtoinstall PCIBridgeBatchfile

IntroductionofAT6Feature1-1
Chapter1Introduction ofAT6
Feature
ThemainboardisdesignedforthenewgenerationCPU.ItsupportstheIntelCPU
SLOT1(PentiumII),up to256MBofmemory,superI/O,andGreenPCfunctions.
Themainboardprovideshighperformance fortheserversystemandmeetsthe
requirementsofthedesktopsystemformultimediainthefuture.
¬Specifications
1. CPU
lCPUSOFTMENU™eliminatestheneedforjumpersorDIPswitches
neededtosetCPUparameters
lEmploysswitchingtyperegulatorstostabilize CPUoperation
lSupports66,75* and83*MHzCPUexternalclockspeeds
lSupportsPentium®II 233 ~300 MHzprocessorcartridge
2. Chipset
lIntel440LXchipset(82443LXand82371AB)
lSupportsUltraDMA/33 IDEprotocol
lSupportsAdvancedConfigurationandPowerManagementInterface(ACPI)
lAcceleratedGraphicsPortconnectorsupportsAGP66MHz/133MHz
(Sideband)3.3Vdevice
3. CacheMemory
lLevel1andLevel2cachebuiltintoIntelPentiumII processorcard
4. Memory(DRAM)
l2168-pinDIMM socketssupportSDRAMandEDO DRAMmodules
lSupportsup to256MBMAX.
lECC suppor

1-2Chapter1
5.SystemBIOS
lAWARDBIOS
lSupportsPlug-and-Play(PnP)
lSupportsAdvancedConfigurationPowerInterface (ACPI)
lSupportsDesktopManagementInterface (DMI)
6. MultiI/O Functions
lFloppyportsupportsup to2.88MB,and3modefloppy
lUltraDMA/33 busmasterIDEsupportsup to4IDEdevices
(IncludingLS-120 MBfloppydrive)
lBuilt-inStandard/EPP/ECPparallelportconnector
lTwobuilt-in16550 fastUARTcompatibleserialportconnectors
lBuilt-inPS/2keyboardandPS/2mouseportconnectors
lBuilt-instandardIrDATX/RXheaderandSB-LinkTMheader
lTwobuilt-inUSBconnectors
lBulit-inEISCA12 pinheader
7. Miscellaneous
lATXformfactor
lOneAGPslot,Three PCIslotsandThree ISAslots
lPC97 Compliant
lBoardsize:305 *170mm
Note:All brandnamesandtrademarksarethepropertyoftheirrespectiveowners.
*Above66MHzbusspeedsupportedbutnotguaranteedduetothePCIspecs.
*Specificationsandinformationcontainedinthismanualaresubjecttochange
withoutnotice.

IntroductionofAT6Feature1-3
-Layoutdiagram
Figure 1-1ComponentLocations

1-4Chapter1
®TheSystemblockdiagram
Control
Address
Data
CPU-SLOT1
ALi
M5135
S
e
r
i
a
l
L
P
T
I
r
D
A
F
D
C
PMC
82443LX
Main
Memory
(DRAM)
Addr
Cntrl
PCI
SLOT(s)
PCIBUS
Control
Address/Data
USB1
USB2
PIIX4PCIIDE
HEADER
ISA
SLOT(s)
ISABUS
B
u
f
f
e
r
K
B
C
R
T
C
F
l
a
s
h
B
I
O
S
XBUS
AGP
S
L
O
T

InstallingtheMainboard2-1
Chapter2Installing theMainboard
ThisAT6mainboardnotonlyprovidesall standardequipmentforclassic
personalcomputers,butalsoprovidesgreatflexibilityformeetingfutureupgrade
demands.Thischapterwill introduce stepbystepall thestandardequipmentand
will alsopresent,ascompletelyaspossiblefutureupgradecapabilities.This
mainboardisabletosupportall IntelPentiumII processorsnowonthemarket.
(Fordetails,see specificationsinChapter1.)
Thischapterisorganizedaccordingthefollowingfeatures:
ŒInstallingtheMainboardtotheCasing
•Standardexternalconnectors
ŽJumpersandswitches
•PresentationandInstallingoftheCPU.
ºInstallingthesystemmemory.
NNNN
Before proceedingwiththeinstallation
Beforeinstallingthemainboardpleasebesuretoturnoff ordisconnectthe
powersupplyunit.Beforemakinganymodificationstothehardware
configurationofthemainboard,thepowersupplytoanyareasofthemainboard
youplantomodifyshouldbeturnedoff toavoidunnecessarydamagetothe
hardware.

2-2Chapter2
&
User friendlyinstructions
Ourobjectiveistoenablethenovice computerusertoperformthe
installationbythemselves.Wehaveattemptedtowritethisdocumentina
veryclear,conciseanddescriptivemannertohelpovercomeanyobstacles
youmayface duringinstallation.Pleasereadourinstructionscarefullyand
followthemcarefullystep-by-step.

InstallingtheMainboard2-3
¬ InstallingtheMainboardtotheCasing
Mostcomputercaseswill haveabaseonwhichtherewill bemanymounting
holesthatallowsthemainboardtobesecurelyattachedandatthesametime,
preventsshortcircuits.
Therearetwowaystoattachthemainboardtothebase.
lwithspacers
lorwithbolts
Inprinciple,thebestwaytoattachthemotherboardiswithbolts,andonlyif
youareunabletodothisshouldyouattachtheboardwithspacers.Takea
carefullookatthemainboardandyouwill see manymountingholesonit.Line
theseholesup withthemountingholesonthebase.Iftheholeslineup,andthere
arescrewholesthismeansyoucanattachthemainboardwithbolts.Iftheholes
lineup andthereareonlyslots,thismeansyoucanonlyattachthemainboard
withspacers.Takethetipofthespacersandinsertitintotheslots.Afterdoing
thistoall theslots,youcanslidethemainboardintopositionalignedwiththe
slots.Afterthemainboardhasbeenpositioned,checktomakesureeverythingis
OKbeforeputtingthecasingbackon.
Note:Ifthemainboardhasmountingholes,butdon’tlineup withtheholes
onthebaseandtheirarenoslotstoattachthespacers,don’tpanic,youcanstill
attachthespacerstothemountingholes.Justcutthespacers(alongthedotted
line)(thespacermaybealittlehardsobecarefulofourhands).Inthiswayyou
canstill attachthemainboardtothebasewithoutworryingaboutshortcircuits.

2-4Chapter2
- StandardExternalConnectors
Insidethecaseofanycomputerseveralcablesandplugshavetobe
connected.Thesecablesandplugsareusuallyconnectedone-by-oneto
connectorslocatedonthemainboard.Youneedtocarefullypayattention
toanyconnectionorientationthecablesmayhaveand,ifany,notice the
positionofthefirstpinoftheconnector.Intheexplanationsthatfollow,
wewill describethesignificance ofthefirstpin.
PN1(Pin4-5-6-7)-Speaker Connector
AttachthesystemspeakertoconnectorPN1.
PinnumberNameorsignificance ofsignal
4+5VDC
5Ground
6Ground
7Speakerdata