Specifications

1-22 Chapter 1: 7401-2xxx/3xxx Product Overview
Power LED
TheProcessorBoardprovidessupportforanexternalpowerLED
throughtheonboardMotion/PowerLEDconnector.ThisLEDis
controlledthroughtheSMC37C935GPIOpins.OncetheSMCchipis
programmedtosupportthePowerLEDfunctiononGPIOpin13,the
LEDwillbeturnedʺonʺanytimeall
powertotheProcessorBoardis
good.Thesystemʹspowermanagementsoftwarehastheoptiontoturn
theLEDoffindicatingthesystemisinapower‐managedmode.
MSR
TheMSRinterfacesupportsamaximumof3tracksofmagneticstripe
informationforsupportofISOformatcards.Activate
theMSR
interfacebyenablingitinBIOSSetupunderIOConfiguration.The
MSRinterfacecontrollerisamemory‐mappeddevice,which canreside
atsystemmemoryaddressesCA000,CC000,orD0000.IfMSR
capabilityisnotdesired,itmaybedisabledthroughBIOSSetup.
Graphics Subsystem
TheRelease2.0–
2.4processorboardsareequippedwithanSMILynx
SVGALCD/CRT3DMgraphicscontrollerwith8MBofintegrated
synchronousgraphicsDRAM.
TheRelease2.5processorboardhasanSMILynx3DM/3DM+graphics
controller.
TheProcessorBoardssupportlinearaddressingbycreatingaʺholeʺin
thememoryaddressspaceatthe
63MBboundary.Whenthesystemis
configuredfor64MBandlinearaddressingisenabled,thelast1MBof
systemmemoryisunusable;therefore,theboardwillreportthattotal
availablesystemmemoryis63MB.
Becauseaholeinmemorycreatesanon‐contiguousaddressspace,
enabling
linearaddressingwhentotalsystemDRAMisgreaterthan64
MBisnotrecommended.Videolinearaddressingisenabledthrough
PCSetupundertheIntegratedPeripheralsmenu.