Physical Device Driver (DevHlp) Functions
You can find more information at the Physical Device Driver Reference.
DevHlp Services
- DevHelp_ABIOSCall
- DevHelp_ABIOSCommonEntry
- DevHelp_AllocateCtxHook
- DevHelp_AllocGDTSelector
- DevHelp_AllocPhys
- DevHelp_AllocReqPacket
- DevHelp_ArmCtxHook
- DevHelp_AttachDD
- DevHelp_Beep
- DevHelp_CloseEventSem
- DevHelp_DeRegister
- DevHelp_DevDone
- DevHelp_DynamicAPI
- DevHelp_EOI
- DevHelp_FreeCtxHook
- DevHelp_FreeGDTSelector
- DevHelp_FreeLIDEntry
- DevHelp_FreePhys
- DevHelp_FreeReqPacket
- DevHelp_GetDescInfo
- DevHelp_GetDeviceBlock
- DevHelp_GetDOSVar
- DevHelp_GetLIDEntry
- DevHelp_InternalError
- DevHelp_LinToGDTSelector
- DevHelp_LinToPageList
- DevHelp_Lock
- DevHelp_MonFlush
- DevHelp_MonitorCreate
- DevHelp_MonWrite
- DevHelp_OpenEventSem
- DevHelp_PageListToGDTSelector
- DevHelp_PageListToLin
- DevHelp_PhysToGDTSel
- DevHelp_PhysToGDTSelector
- DevHelp_PhysToUVirt
- DevHelp_PhysToVirt
- DevHelp_PostEventSem
- DevHelp_ProcBlock
- DevHelp_ProcRun
- DevHelp_ProtToReal
- DevHelp_PullParticular
- DevHelp_PullRequest
- DevHelp_PushRequest
- DevHelp_QueueFlush
- DevHelp_QueueInit
- DevHelp_QueueRead
- DevHelp_QueueWrite
- DevHelp_RealToProt
- DevHelp_Register
- DevHelp_RegisterBeep
- DevHelp_RegisterDeviceClass
- DevHelp_RegisterKrnlExit
- DevHelp_RegisterPDD
- DevHelp_RegisterStackUsage
- DevHelp_RegisterTmrDD
- DevHelp_ResetEventSem
- DevHelp_ResetTimer
- DevHelp_ROMCritSection
- DevHelp_Save_Message
- DevHlp_SchedClock
- DevHelp_SemClear
- DevHelp_SemHandle
- DevHelp_SemRequest
- DevHelp_SendEvent
- DevHelp_SetIRQ
- DevHelp_SetROMVector
- DevHelp_SetTimer
- DevHelp_SortRequest
- DevHelp_RAS
- DevHelp_TCYield
- DevHelp_TickCount
- DevHelp_UnLock
- DevHelp_UnPhysToVirt
- DevHelp_UnSetIRQ
- DevHelp_VerifyAccess
- DevHelp_VideoPause
- DevHelp_VirtToLin
- DevHelp_VirtToPhys
- DevHelp_VMAlloc
- DevHelp_VMFree
- DevHelp_VMGlobalToProcess
- DevHelp_VMLock
- DevHelp_VMProcessToGlobal
- DevHelp_VMSetMem
- DevHelp_VMUnLock
- DevHelp_Yield
Services and Function Codes
Undocumented
- DevHlp_PhytoUsableVirt
- DevHlp32_GetInfoSegs