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

InstallingtheMainboard2-5
PN1(Pin1-2)-Hardware ResetConnector
Attachthecablefromthecase’sResetswitchtothisconnector.Press
andholdtheresetbuttonforatleastonesecondtoresetthesystem.
PinnumberNameorsignificance ofsignal
1Ground
2Resetinput
PN2(Pin10-11)-Hardware SuspendSwitchConnector
(SMISwitch)
Attachthecablefromthecase’ssuspendswitch(ifthereisone)tothisswitch.
Usethisswitchtoenable/disablethepowermanagementfunctionby
hardware.
PinnumberNameorsignificance ofsignal
10 Ground
11 Suspendsignal
PN2(Pin1-2-3-4-5)-KeylockandPower LEDConnector
Attachthecase’skeylocktotheconnector.
PinnumberNameorsignificance ofsignal
1+5VDCpowerLED
2NoconnectionpowerLED
3Ground powerLED
4Keylockinhibitsignalkeylock
5Ground keylock
The“keylockswitch”isusedtolockthecomputer’skeyboard.
Thisdisablesthekeyboardsothatunauthorizedpersonscannot
useit.Whenthisfunctionisinuse,youwill needtousethe
unlockkeytoactivatethekeyboard.
Computer
K
n
o
w
l
e
d
g
e

2-6Chapter2
PN2(Pin6-7)-HDD LEDConnector
Attachthecablefromthecase’sHDD LEDtothisconnector.
PinnumberNameorsignificance ofsignal
6
LEDpower
7
HDD active
PN2(Pin8-9)-Power SwitchConnector
PinnumberNameorsignificance ofsignal
8Ground
9PowerSwitchsignal
PN1(Pin9-10)-SleepLEDConnector
PinnumberNameorsignificance ofsignal
9LEDPower
10 GreenLEDActive

InstallingtheMainboard2-7
MOUSE-PS/2MouseConnector
AttachaPS/2mousetothis6-pinDin-connector.
PinnumberNameorsignificance ofsignal
1Mousedata
2Noconnection
3Ground
4+5VDC
5Mouseclock
6Noconnection
KB-PS/2KeyboardConnector
Attachakeyboardtothis6-pinDin-connector.
PinnumberNameorsignificance ofsignal
1Keyboarddata
2
Noconnection
3Ground
4+5VDC
5Keyboardclock
6
Noconnection

2-8Chapter2
ATXPWR-ATXPower inputConnector
AttachtheconnectorsfromthepowersupplytoATXPWR.
PinnumberNameorsignificance ofsignal
1+3.3V
2+3.3V
3Ground
4+5V
5Ground
6+5V
7Ground
8Powergood
9+5V
10 +12V
11 +3.3V
12 -12V
13 Ground
14 ON/OFF controlsignal
15 Ground
16 Ground
17 Ground
18 -5V
19 +5V
FAN1,FAN2-DC-FAN Power Connector
PinnumberNameorsignificance ofsignal
1Ground
2+12V
3Sense
Caution: Ifpowersupplyconnectors arenotproperlyattachedto
ATXPWR,thepowersupplyoradd-on cardsmaybedamaged.

InstallingtheMainboard2-9
IR-IRConnector(Infrared)
PinnumberNameorsignificance ofsignal
1+5V
2
FIRRX
3IR_RX
4Ground
5IR_TX
6
Noconnection
7
CIRRX
8
+5V
9
Noconnection
10
Noconnection
I/O portconnectors
NameNo.ofpinsDescription
IDE1 40 IDEchannel1connector
IDE2 40 IDEchannel2connector
FDC34 Floppydiskconnector
LPT25 Parallelport
COM1 9 SerialportCOM1connector
COM2 9 SerialportCOM2connector
USB8UniversalserialBus
Notes:*IDE1,IDE2arehighperformance PCIIDEconnectors.Upto
fourIDEinterface devicesaresupported.

2-10 Chapter
2
WOL1,WOL2Connector(WakeOnLan)
PinnumberNameorsignificance ofsignal
1SenseInput
2
GND
3
5VSB
SB-Link -Connector
PinnumberNameorsignificance ofsignal
1GNTA
2
GND
3
KEY
4
REQA
5
QND
6
SERIRQ

InstallingtheMainboard2-
11
® Jumper and Switches
Youcansetjumperswitchesonthemainboardtoconfigurevarioushardware
options.See Figure1-1forjumperlocations.
Throughoutthissection,thefollowingsymbolsareusedtoindicatejumper
settings.
For3-pinjumpers,thesymbolsbelowareused:
For2-pinsjumpers,thefollowingsymbolsareused:
Note:Toavoidlosingjumpercaps,attachtheremovedjumpercaptooneof
thejumperpins.
ShortPins1and2withajumpercap.
ShortPins2and3withajumpercap.
Place thejumpercapoverthetwopinsofthe
jumpertoShortthejumper.
RemovethejumpercaptoOpenthejumpercap.

2-12 Chapter
2
CCMOS1-CMOSDischargeJumper
JumperCCMOSdischargeCMOSmemory.Whenyouinstall the
mainboard,makesurethisjumperissetforNormalOperation(1-2).See
thejumperbelow.
SettingCCMOS
NormalOperation
(Default)
DischargeCMOS

InstallingtheMainboard2-
13
¯ InstallationofthePentium

II CPU
1.Mountthetwoblackplasticpegsnotothemainboard.Thesepegswill be
usedtoattachthefanheatsinksupports.Notice thatoneholeandthe
baseofonepegarelargerthantheotherholeandpegbase.Pusheach
pegintoitsholefirmlytotheenduntil youhearit“click”intoplace.
2.Slideablackplasticsupportontoeachendofthefanheatsink,making
surethattheholeandclipareontheoutsideedgeofthesupport.Slide
eachsupporttowardthecenteroftheprocessoruntil thesupportis
seafedintheoutsidegrooveinthefanhousing.
Retention
mechanism
Largepegandhold
Topofprocessor
Grooveinfanhousing

2-14 Chapter
2
3.Slidetheclip(A)oneachsupporttowardtheprocessor,exposingthe
holethatwill fitthepegonthemainboard.Pushthelatches(B)onthe
processortowardthecenteroftheprocessoruntil theyclickintoplace.
4.Holdtheprocessorsothatthefanshroud isfacingtowardthepegson
themainboard.Slidetheprocessor(DirectionC)intotheretention
mechanismandpress evenlyandgently.Ensurethatthepegsonthe
mainboardslideintotheholesintheheatsinksupportandthatthe
alignmentnotchintheprocessorfitsovertheplug inSlot1.