[原创]诊断卡代码(仅供参考)文本文档

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1、Code:FF,00,CO,DO,CF,Fl,ornothingmeantheCPUfailedCl,C6,C3,D3,D4,D6,D8,B0,A7,Elrepresentmemory24,25,26,01,0A,0B,2A,2B,3123,24,25,saidsomeintegratedgraphicsmotherboardcannonnallight,someVIAchipsetshowed13saidcanlightup,someinthename-brandcomputermotherboardshowsOb

2、isnormal,somemotherboardshows4esaidnormallight,someINTELmotherboardchipsetshowed26or16cannormallight・ThecombinationcycleofCl,C6,C3,01,and02ismostlyI/0badorswipingtheBIOSIfshownin05,ED,41,directtheBIOS00.YouwillcontroltheINI19bootload.・1processortest1,processors

3、tatusverification,andifthetestfails,theloopisinfinite・Theprocessorregistertestisabouttobegin,andunblockinginterruptswillbesuspended.TheCPUregistertestisongoingorfailing.Determinethetypeofdiagnosis(normalormanufacturing)・Ifthekeyboardbuffercontainsdata,itwillfai

4、l.Disablenon-blockinginterrupts:Startwithadelay.CMOSwrite/readisinorout・Remove8042keyboardcontrollerandissuetheTESTKBRDcommand(AAH).ROMBIOScheckpartsareongoingormalfunction.Make8042keyboardcontrollerresetandverifyTESTKBRD・Keyboardcontrollersoftreset/electricalt

5、est・Programmableintervaltimertestsarebeingperformedorfailed・Ifyourepeatmanufacturingtest1through5,youcanobtain8042controlstatus・Confirmthesoftreset/power;ThebootROM.TheDMAisinoroutoforder・Makethecircuitfilminitialpreparation,disablevideo,odd-even,DMAcircuit,and

6、clearDMAcircuit,allpageregisterandCMOSstopbytes・TheROMBIOSchecksumhasbeenactivatedandthekeyboardbufferischeckedforremova1.TheDMAinitialpageregisterreads/writestestsarebeingperformedorfailed・7processortest2,verifytheCPUregister'swork・ROMBIOSchecksumisnormal,keyb

7、oardbufferhasbeencleared,andBAT(basicguaranteetest)commandsareissuedtothekeyboard・・MaketheCMOStimerastheinitialpreparation,normalupdatetimercycle・TheBATcommandhasbeenissuedtothekeyboardandwillbewrittentotheBATcommand・TheRAMupdatetestisongoingorfailing・The2009EP

8、ROMchecksummustbeequaltozero.Verifythebasicguaranteetestforthekeyboard,thenverifythekeyboardcommandbyte・Thefirst64KRAMtestisongoing・0Apreparesthevideointerfaceforinitialprep