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1、InternationalCarpathianControlConferenceICCC’2002MALENOVICE,CZECHREPUBLICMay27-30,2002REAL-TIMEAPPLICATIONSINWINDOWSNTVladimírVA?EK,MichalBLI??áKandKarelPER?TKAInstituteofInformationTechnologiesTomasBataUniversityinZlin,CzechRepublicAbstract:Fortheeducationintheareaofcontroltheorythere
2、wasbuilttheprogramsystemfortheinteractiveworkwiththerealdiscretecontrolloop.Theprogramisrunningintherealtimeconditionsandallowsdefineboththestructureandtheparametersofthediscretecontroller,whichisconnectedwiththerealcontrolledsystem.Inthefirstwasnecessarytosolvetherealtimeprogramrunnin
3、g.Forthisproblemwasdonetheanalysisofthewindowspossibilitiesinthisarea.Finallythemultimediaapplicationtimingwasusedforthisproblemsolving.Keywords:WindowsNT,real-time,multimediatimer,hardandsoftrealtimesystem1IntroductionOperatingsystemswithreal-timesupportaregenerallysystems,whichallowu
4、ssimultaneousparallelprocessingofseveraltasks,programs,processes.Itmeansthattheysupporttechnologiesasmultitasking,multithreading,multi-processorstasksprocessing,exacttimingandsoon.MSDOSisthetypicalexampleoftheoperatingsystemwithoutthesupportofthetasksprocessinginreal-time.Thissystemisb
5、asedasasystem,inwhichisabletoprocessonlyoneprocessinthegiventime.Processingofmanyprocessesinreal-timeisableonlywithmanyspecial,oftenverycomplex,modificationsandoperatingsystemupgrades,forexampleRTMONforMSDOSandC,C++.MSWindows,Unixaresomeoftheoperatingsystemswhichenabletousemultiprocess
6、ing.However,theseoperatingsystemshavesomedrawbacks,limitations,whichinhibitustocreateadequateapplicationswhichusetasksprocessinginreal-time.AnalysisoftheselimitationsintheoperatingsystemMSWindowshasbeendone.Itwasfocusedonfindingassimplesolutionaspossibleoftheproblemsconnectedwiththerea
7、lizationofreal-timeapplicationsinthissystem.OperatingsystemMSWindowsisgenerallysystem,whichenablesustheindependentprocessingofseveralapplicationsorprocessessimultaneously.Multiprocessing(multithreading)issupportedby32bitversionsofthissystem.Itincludestimerswiththeoreticalvalueofthepe
