软件堆栈管理

ThePIC16C5Xhasastackwhichisonly2deep,and,

asaresult,onlytwonestedcallscanbemade(i.e.,only

onecallwithinacallroutine).Ifmorethantwolevelsof

subroutinenestingisrequired,thisapplicationnotecan

beusedtoimplementastackmanagertohandlethe

flowofthecalls.AN527SoftwareStackManagementAuthor:StanD’SouzaIMPLEMENTATIONMicrochipTechnologyInc.Thisapplicationnoteimplementsa5-deepstack,so5nestedcallscanbemadewithoutoverowingthestack.NCALLisdenedasaMACROwhichwillbeINTRODUCTIONusedinsteadofthemnemonicCALL,whenaThePIC16C5Xhasastackwhichisonly2deep,and,subroutinecallismade.