Physical Device Driver (DevHlp) Functions

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

Functions

DevHlp Services

RMCALLS library (Resource Manager)

Services and Function Codes

Undocumented

DevHlp_EOI
DevHlp_PhytoUsableVirt
DevHlp32_GetInfoSegs

Data Types

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