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Pegasus Fast Start Guide 7460572 Rev A Page 10 of 12
POWERINGONPEGASUSFollowthesestepstopoweronandverifythefunctionalityofthePegasusSBC.Thisprocessassumes
youhaveaPegasusSBCandcablekit.
1. ConnectaVGAmonitortotheSBC.AttachtheVGAcable,6981084,totheVGAconnectoronthe
SBCandconnectyourmonitorVGAcabletotheDB9socket.
2. ConnectakeyboardandmousetotheSBC.AttachthePS/2Keyboard/Mousecable,6981162,to
thePS/2connectorontheSBCandconnectyourkeyboardandmousedevicestotheconnectors
ontheotherendofthecable.
3. (OptionalforUSBKeyboard/Mouse)IfyouareusingaUSBkeyboardandmouse,attachtheUSB
cable,6981171,totheUSB0‐1connectorontheSBCandconnectyourkeyboardandmouse
devicestotheconnectorsontheotherendofthecable.
4. ConnectanexternalIDEharddriveorCDdevicetotheSBC.AttachtheIDEribboncable,
6981004,totheIDE/FlashdiskconnectorontheSBCandconnectyourIDEdevicetothe
connectorontheotherendofthecable.Note:youmustprovideanexternalsourceofpower
foryourIDEdevice.
5. (OptionalforUSBstoragedevice)IfyouareusingaUSBstoragedevice,attachtheUSBcable,
6981171,totheUSB0‐1(USB2‐3ifusingaUSBkeyboardandmouse)connectorontheSBCand
connectyourexternalstoragedevicetotheUSB0(USB2ifusingaUSBkeyboardandmouse)
connectorontheotherendofthecable.
6. ConnecttheSBCtopower.AttachthePowerIncable,6981175,tothePowerInconnectoron
theSBC.Ensureyour+5Vpowersourceisoff.Connectyour+5Vpowersourcetotheotherend
ofthecable.
7. Turnonthepowersource.
ThePegasusBIOSscreenshouldappearandthentheSBCshouldbeginbootingfromtheexternal
storagedevice.
BIOSCONFIGURATIONFORADD‐ONBOARDSWhenyouplugPC/104boardsontoPegasus,theBIOSmayormaynotrecognizethenewboard.Ifthe
newboardisnotrecognized,youmayneedtoconfigurethenewhardwareintheBIOSbeforebeing
abletouseit.Youcanconfigurethesystem’sIRQ/DMAresourcesfromtheBIOS’sPnP/PCI
Configurationsscreen.FollowingisatableoftheIRQsforthesystemperipheraldevices.
IRQLevelFunction
IRQ01PC/ATEnhancedPS/2Keyboard
IRQ03 CommunicationsPort
IRQ04 CommunicationsPort
IRQ05 StandardEnhancedPCItoUSBHostController
IRQ05 StandardOpenHCDUSBHostController
IRQ06 StandardFloppyDiskController
IRQ10 AdvancedMicroDevicesWin2K/WinGraphicsDriver
IRQ10 GeodeLXAESCryptoDriver
IRQ11RealtekRTL8139/810xFamilyFastEthernetNIC
IRQ12MicrosoftPS/2Mouse
IRQ14PrimaryIDEChannel