键盘接口

键盘接口PS/2ModeSpecificationOperatingmodeTherearefouroperatingmodesinPS/2mouse:A.ResetMode:Inthismodeaself-testisinitiatedduringpower-onorbyaResetcommand.Afterresetsignal,PS/2mousewillsend:1).CompletioncodeAA&IDcode00.2).Setdefault:samplingrate:100reports/snon-autospeed2dot/countdisableB.StreamMode:Themaximumrateoftransferistheprogrammedsamplerate.Datareportistransmittedif1).switchispressed2).movementhasbeendetectC.RemoteMode:DataistransmittedonlyinresponsetoaReadDatacommand.D.WrapMode:Anybyteofdatabythesystem,excepthexEC(R