Physical Device Driver (DevHlp) Functions

You can find more information at the Physical Device Driver Reference.

Functions

OS/2 Monitor Functions

• DosMonOpen
• DosMonReg
• DosMonRead
• DosMonWrite
• DosMonClose

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
• DevHelp_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

RMCALLS library (Resource Manager)

• RMADDToHDevice
• RMAdjToHandleList
• RMAllocResource
• RMConvertID
• RMCreateAdapter
• RMCreateDetected
• RMCreateDevice
• RMCreateDriver
• RMCreateLDev
• RMCreateSysName
• RMDeAllocResource
• RMDestroyAdapter
• RMDestroyDetected
• RMDestroyDevice
• RMDestroyDriver
• RMDestroyLDev
• RMDestroySysName
• RMDevIDToHandleList
• RMGetCommandLine
• RMGetDriverName
• RMGetNodeInfo
• RMGetVersion
• RMHandleToParent
• RMHandleToResourceHandleList
• RMHandleToType
• RMHDevToHLDev
• RMKeyToHandleList
• RMModifyNodeFlags
• RMModifyResources
• RMParseSCSIInquiry
• RMResToHandleList
• RMUpdateAdjunct

SMP DevHlps

• DosCreateSpinLock
• DosFreeSpinLock
• DosAcquireSpinLock
• DosReleaseSpinLock
• DosAllocThreadLocalMemory
• DosFreeThreadLocalMemory
• DosQuerySysInfo

Services and Function Codes

• DevHlp_OpenFile
• DevHlp_CloseFile
• DevHlp_ReadFile
• DevHlp_ReadFileAt
• DevHlp_PerfSysTrace
• DevHlp_QSysState
• DevHlp_KillProc
• DevHlp_Security
• DevHlp_SysTrace

Undocumented

• DevHlp_EOI
• DevHlp_PhytoUsableVirt
• DevHlp32_GetInfoSegs

Data Types

• ADAPTERSTRUCT
• ADJHANDLELIST
• ADJINFO
• ADJUNCT
• AHRESOURCE
• DATESTAMP
• DETECTEDSTRUCT
• DEVICESTRUCT
• DMARESOURCE
• DRIVERINFO
• DRIVERSTRUCT
• HANDLELIST
• IORESOURCE
• IRQRESOURCE
• LDEVSTRUCT
• MEMRESOURCE
• NODEENTRY
• RESOURCELIST
• RESOURCETYPE
• RM_GETNODE_DATA
• RM_NODE
• SYSNAMESTRUCT
• TMRRESOURCE

Generic IOCtl Commands

Category 01h ASYNC (RS232-C) Control IOCtl Commands

• ASYNC_SETBAUDRATE (41h)
• ASYNC_SETLINECTRL (42h)
• ASYNC_EXTSETBAUDRATE (43h)
• ASYNC_TRANSMITIMM (44h)
• ASYNC_SETBREAKOFF (45h)
• ASYNC_SETMODEMCTRL (46h)
• ASYNC_STOPTRANSMIT (47h)
• ASYNC_STARTTRANSMIT (48h)
• ASYNC_SETBREAKON (4Bh)
• ASYNC_SETDCBINFO (53h)
• ASYNC_SETENHANCEDMODEPARMS (54h)
• ASYNC_GETBAUDRATE (61h)
• ASYNC_GETLINECTRL (62h)
• ASYNC_EXTGETBAUDRATE (63h)
• ASYNC_GETCOMMSTATUS (64h)
• ASYNC_GETLINESTATUS (65h)
• ASYNC_GETMODEMOUTPUT (66h
• ASYNC_GETMODEMINPUT (67h)
• ASYNC_GETINQUECOUNT (68h)
• ASYNC_GETOUTQUECOUNT (69h)
• ASYNC_GETCOMMERROR (6Dh)
• ASYNC_GETCOMMEVENT (72h)
• ASYNC_GETDCBINFO (73h)
• ASYNC_GETENHANCEDMODEPARMS (74h)

Category 03h Video Control IOCtl Commands

• SCR_ALLOCLDT (70h)
• SCR_DEALLOCLDT (71h)
• PTR_GETPTRDRAWADDRESS (72h)
• VID_INITCALLVECTOR (73h)
• SCR_ABIOSPASSTHRU (74h)
• SCR_ALLOCLDTOFF (75h)
• SCR_ALLOCLDTBGVAL (76h)
• SCR_ALLOCVIDEOBUFFER (7Eh)
• SCR_GETROMFONTADDR (7Fh)

Category 04h Keyboard Control IOCtl Commands

• KBD_SETTRANSTABLE (50h)
• KBD_SETINPUTMODE (51h)
• KBD_SETINTERIMFLAG (52h)
• KBD_SETSHIFTSTATE (53h)
• KBD_SETTYPAMATICRATE (54h)
• KBD_SETSESMGRHOTKEY (56h)
• KBD_SETKCB (57h)
• KBD_SETCP (58h)
• KBD_SETREADNOTIFICATION (59h)
• KBD_ALTERKBDLED (5Ah)
• KBD_SETNLS (5Ch)
• KBD_CREATE (5Dh)
• KBD_DESTROY (5Eh)
• KBD_GETINPUTMODE (71h)
• KBD_GETINTERIMFLAG (72h)
• KBD_GETSHIFTSTATE (73h)
• KBD_READCHAR (74h)
• KBD_PEEKCHAR (75h)
• KBD_GETSESMGRHOTKEY (76h)
• KBD_GETKEYBDTYPE (77h)
• KBD_GETCODEPAGEID (78h)
• KBD_XLATESCAN (79h)
• KBD_QUERYKBDHARDWAREID (7Ah)
• KBD_QUERYKBDCODEPAGESUPPORT (7Bh)

Category 05h Parallel Port Control IOCtl Commands

• PRT_SETFRAMECTL (42h)
• PRT_SETINFINITERETRY (44h)
• PRT_INITPRINTER (46h)
• PRT_ACTIVATEFONT (48h)
• PRT_SETPRINTJOBTITLE (4Dh)
• PRT_SETIRQTIMEOUT (4Eh)
• PRT_SETCOMMMODE (52h)
• PRT_SETDATAXFERMODE (53h)
• PRT_GETFRAMECTL (62h)
• PRT_GETINFINITERETRY (64h)
• PRT_GETPRINTERSTATUS (66h)
• PRT_QUERYACTIVEFONT (69h)
• PRT_VERIFYFONT (6Ah)
• PRT_QUERYIRQTIMEOUT (6Eh)
• PRT_QUERYCOMMMODE (72h)
• PRT_QUERYDATAXFERMODE (73h)
• PRT_QUERYDEVICEID (74h)

Category 07h Mouse Control IOCtl Commands

• MOU_UPDATEDISPLAYMODE (51h)
• MOU_SETSCALEFACTORS (53h)
• MOU_SETEVENTMASK (54h)
• MOU_REASSIGNTHRESHOLDVALUES (55h)
• MOU_SETPTRSHAPE (56h)
• MOU_UNMARKCOLLISIONAREA (57h)
• MOU_MARKCOLLISIONAREA (58h)
• MOU_SETPTRPOS (59h)
• MOU_SETPROTDRAWADDRESS (5Ah)
• MOU_SETMOUSTATUS (5Ch)
• MOU_DISPLAYMODECHANGE (5Dh)
• MOU_GETBUTTONCOUNT (60h)
• MOU_GETMICKEYCOUNT (61h)
• MOU_GETMOUSTATUS (62h)
• MOU_READEVENTQUE (63h)
• MOU_GETQUESTATUS (64h)
• MOU_GETEVENTMASK (65h)
• MOU_GETSCALEFACTORS (66h)
• MOU_GETPTRPOS (67h)
• MOU_GETPTRSHAPE (68h)
• MOU_QUERYTHRESHOLDVALUES (69h)
• MOU_VER (6Ah)
• MOU_QUERYPOINTERID (6Bh)

Category 08h Logical Disk Control IOCtl Commands

• DSK_LOCKDRIVE (00h)
• DSK_UNLOCKDRIVE (01h)
• DSK_REDETERMINEMEDIA (02h)
• DSK_SETLOGICALMAP (03h)
• DSK_BEGINFORMAT (04h)
• DSK_BLOCKREMOVABLE (20h)
• DSK_GETLOGICALMAP (21h)
• DSK_UNLOCKEJECTMEDIA (40h)
• DSK_SETDEVICEPARAMS (43h)
• DSK_WRITETRACK (44h)
• DSK_FORMATVERIFY (45h)
• DSK_DISKETTECONTROL (5Dh)
• DSK_QUERYMEDIASENSE (60h)
• DSK_GETDEVICEPARAMS (63h)
• DSK_READTRACK (64h)
• DSK_VERIFYTRACK (65h)
• DSK_GETLOCKSTATUS (66h)

Category 09h Physical Disk Control IOCtl Commands

• PDSK_LOCKPHYSDRIVE (00h)
• PDSK_UNLOCKPHYSDRIVE (01h)
• PDSK_WRITEPHYSTRACK (44h)
• PDSK_GETPHYSDEVICEPARAMS (63h)
• PDSK_READPHYSTRACK (64h)
• PDSK_VERIFYPHYSTRACK (65h)

Category 0Ah Character Device Monitor IOCtl Command

• MON_REGISTERMONITOR (40h)

Category 0Bh General Device Control IOCtl Commands

• DEV_FLUSHINPUT (01h)
• DEV_FLUSHOUTPUT (02h)
• DEV_SYSTEMNOTIFYPDD (41h)
• DEV_QUERYMONSUPPORT (60h)

Category 0Ch Advanced Power Management

• POWER_SENDPOWEREVENT (40h)
• POWER_SETPOWEREVENTRES (41h)
• POWER_OEMFUNCTION (45h)
• POWER_GETPOWERSTATUS (60h)
• POWER_GETPOWEREVENT (61h)
• POWER_GETPOWERINFO (62h)
• POWER_GETPOWERSTATE (63h)

Category 80h Screen Control IOCtl Commands

• SCREENDD_GETCURRENTBANK (00h)
• SCREENDD_SETCURRENTBANK (01h)
• SCREENDD_SVGA_ID (08h)
• SCREENDD_SVGA_OEM (09h)
• SCREENDD_UPDATEMEMORY (0Ah)
• SCREENDD_GETLINEARACCESS (0Bh)

Category 80h OEMHLP IOCtls

• OEMHLP_GETOEMADAPTIONINFO (00h)
• OEMHLP_GETMACHINEINFO (01h)
• OEMHLP_GETDISPLAYCOMBCODE (02h)
• OEMHLP_GETVIDEOFONTS (03h)
• OEMHLP_READEISACONFIGINFO (04h)
• Read EISA Function Configuration Information - Subfunction 01 - Function 04h
• OEMHLP_GETROMBIOSINFO (05h)
• OEMHLP_GETMISCVIDEOINFO (06h)
• OEMHLP_GETVIDEOADAPTER (07h)
• OEMHLP_GETSVGAINFO (08h)
• OEMHLP_GETMEMINFO (09h)
• OEMHLP_GETDMQSINFO (0Ah)
• OEMHLP_PCI (0Bh)
• OEMHLP_PCI (0Bh) - Subfunction 00h
• OEMHLP_PCI (0Bh) - Subfunction 01h
• OEMHLP_PCI (0Bh) - Subfunction 02h
• OEMHLP_PCI (0Bh) - Subfunction 03h
• OEMHLP_PCI (0Bh) - Subfunction 04h

Category 80h Adapter Presence-Check Services (TESTCFG.SYS)

• TESTCFG_SYS_GETBIOSADAPTER (40h)
• TESTCFG_SYS_ISSUEINIOINSTR (41h)
• TESTCFG_SYS_ISSUEOUTIOINSTR (42h)
• TESTCFG_SYS_GETBUSARCH (60h)
• TESTCFG_SYS_GETALLPOSIDS (61h)
• TESTCFG_SYS_GETALLEISAIDS (62h)

Category 80h Resource Manager IOCtl Commands

• Get Resource Manager Node Data - Function 01h
• Enumerate Resource Manager Nodes - Function 02h

Category 80h CD-ROM Drive and Disc IOCtl Commands

• CDROMDISK_RESETDRIVE (40h)
• CDROMDISK_EJECTDISK (44h)
• CDROMDISC_CLOSETRAY (45h)
• CDROMDISK_LOCKUNLOCKDOOR (46h)
• CDROMDISK_SEEK (50h)
• CDROMDISK_DEVICESTATUS (60h)
• CDROMDISK_GETDRIVER (61h)
• CDROMDISK_GETSECTORSIZE (63h)
• CDROMDISK_GETHEADLOC (70h)
• CDROMDISK_READLONG (72h)
• CDROMDISK_GETVOLUMESIZE (78h)
• CDROMDISK_GETUPC (79h)

Category 81h CD-ROM Audio IOCtl Commands

• CDROMAUDIO_SETCHANNELCTRL (40h)
• CDROMAUDIO_PLAYAUDIO (50h)
• CDROMAUDIO_STOPAUDIO (51h)
• CDROMAUDIO_RESUMEAUDIO (52h)
• CDROMAUDIO_GETCHANNEL (60h)
• CDROMAUDIO_GETAUDIODISK (61h)
• CDROMAUDIO_GETAUDIOTRACK (62h)
• CDROMAUDIO_GETSUBCHANNELQ (63h)
• CDROMAUDIO_GETAUDIOSTATUS (65h)

Category 81h Touch Device-Dependent Driver

• TOUCH_DEVDEP_SETCALIBCONST (52h)
• TOUCH_DEVDEP_READDATA (53h)
• TOUCH_DEVDEP_SETDATAMODE (54h)
• TOUCH_DEVDEP_SETCLICKLOCK (55h)
• TOUCH_DEVDEP_SETTOUCHTHRESHOLD (56h)
• TOUCH_DEVDEP_SETEMULXY (57h)
• TOUCH_DEVDEP_SETDATAREPORTRATE (58h)
• TOUCH_DEVDEP_SETLOWPASSFILTER (59h)
• TOUCH_DEVDEP_WRITEMEMLOC (5Ah)
• TOUCH_DEVDEP_GETCALIBCONST (60h)
• TOUCH_DEVDEP_GETDATAMODE (61h)
• TOUCH_DEVDEP_GETCLICKLOCK (62h)
• TOUCH_DEVDEP_GETTOUCHTHRESHOLD (63h)
• TOUCH_DEVDEP_GETEMULXY (64h)
• TOUCH_DEVDEP_GETDATAREPORTRATE (65h)
• TOUCH_DEVDEP_GETLOWPASSFILTER (66h)
• TOUCH_DEVDEP_READMEMLOC (67h)

Category 81h Touch Device-Independent Driver

• TOUCH_DEVINDEP_SETCOORDSYS (50h)
• TOUCH_DEVINDEP_SETSELECTMECH (52h)
• TOUCH_DEVINDEP_SETEVENTMASK (53h)
• TOUCH_DEVINDEP_SETQUEUESIZE (54h)
• TOUCH_DEVINDEP_SETEMULSTATE (55h)
• TOUCH_DEVINDEP_GETCOORDSYS (60h)
• TOUCH_DEVINDEP_GETSELECTMECH (62h)
• TOUCH_DEVINDEP_GETEVENTMASK (63h)
• TOUCH_DEVINDEP_GETQUEUESIZE (64h)
• TOUCH_DEVINDEP_GETEMULSTATE (65h)
• TOUCH_DEVINDEP_GETREADEVENTQUEUE (66h)

Icon Legend

• : More information is required on this function or symbol.

Links

• Physical Device Driver Reference