Int 2F/AX=1684h

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MS Windows - GET DEVICE API ENTRY POINT

AX = 1684h
BX = virtual device (VxD) ID (see #02642)
ES:DI = 0000h:0000h

Return:
ES:DI -> VxD API entry point, or 0:0 if the VxD does not support an API

Note: Some Windows enhanced-mode virtual devices provide services that applications can access. For example, the Virtual Display Device (VDD) provides an API used in turn by WINOLDAP.

See Also:

(Table 02642) Values for MS Windows VxD ID: Value Name CallOut V86 PM Description 0000h ACT200L ? ? ? IrDA Infrared ActiSys framer VxD 0000h ACT220L ? ? ? IrDA Infrared ActiSys 220 framer VxD 0000h ADAPTEC ? ? ? IrDA Infrared Adaptec framer VxD 0000h AM1500T ? N N (Win95) 0000h ATI ? N N (Win95) ATI display driver 0000h ATIPPCAP ? N Y ATI Rage128-based video card 0000h CDFS ? N N 0000h CDTSD ? N N (Win95) CD-ROM Type-Specific Driver 0000h CE2NDIS3 ? N N (W4Wg) 0000h CENDIS ? N N (W4Wg) 0000h CHIPS ? N N (Win95) Chips&Tech display driver 0000h CIRRUS ? N N (Win95) Cirrus display driver 0000h CTNDW ? N N (W4Wg) 0000h CTVSD ? N N (Win95) CD-ROM Vendor-Specific Driver 0000h CM2NDIS3 ? N N (W4Wg) 0000h COMBUFF ? N N (Win95) 0000h COMPAQ ? N N (Win95) Compaq display driver 0000h CPQNDIS3 ? N N (W4Wg) 0000h CRYSTAL ? ? ? IrDA Infrared Crystal framer VxD 0000h CWCENUM ? N N (Win95SR2???) 0000h CWCSPUD3 ? N N (Win95SR2???) 0000h DBKVSSD ? N N (Win95) Databook PCMCIA socket services??? 0000h DDOM95 ? N N 0000h DECLAN ? N N (W4Wg) 0000h DiskTSD ? N N (Win95) hard-disk Type-Specific Driver 0000h DiskVSD ? N N (Win95) hard-disk Vendor-Specific Driver 0000h DMICTVXD ? N N 0000h DMMDVDX ? N N Diamond MaximumDVD 0000h DRVSPACX ? N N (Win95) 0000h E30N3 ? N N (W4Wg) 0000h E31N3 N N (W4Wg) 0000h EE16 N N (W4Wg) 0000h EISA N N (Win95) 0000h EL59X N N (Win95) 0000h ELNK16 N N (W4Wg) 0000h ELNK3 N N (Win95) 0000h ELNKII N N (W4Wg) 0000h ELNKMC N N (W4Wg) 0000h ELPC3 N N (W4Wg) 0000h ENABLE2 N N (Win95) 0000h ENABLE4 N N (Win95) 0000h EPRO N N (Win95) 0000h ES1488V N N (Win95) 0000h ES1688V N N (Win95) 0000h ES488V N N (Win95) 0000h ES688V N N (Win95) 0000h ESI ? ? IrDA Infrared ESI framer VxD 0000h FILEMON N N DOS386 File Monitor 0000h FLS1MTD N N (Win95) flash-memory driver??? 0000h FLS2MTD N N (Win95) flash-memory driver??? 0000h HPEISA N N (W4Wg) 0000h HPFEND N N (W4Wg) 0000h HPISA N N (W4Wg) 0000h HPMCA N N (W4Wg) 0000h HSFLOP N N 0000h IBMTOK N N (W4Wg) 0000h IBMTOK4 N N (Win95) 0000h IRCOMM ? ? IrDA Infrared Virtual COM/LPT driver 0000h IRLAMPEX ? ? IrDA Infrared Protocol VxD 0000h IRLAPFRM ? ? IrDA Infrared Virtual COM/LPT frame driver 0000h IRMATRAK N N (W4Wg) 0000h JAVASUP N N Internet Explorer JAVA support 0000h KEYREMAP N N (Windows95 PowerToys) shift-key remapper 0000h LPT N N N (Win4Workgroups 3.11) DOS386 LPT Device 0000h LPTENUM ? N N 0000h MONVSD ? ? ? 0000h MGA ? N N (Win95) Matrox MGA display driver 0000h MSMINI ? N N (Win95) 0000h MSODISUP N N N (Win4Workgroups 3.11) MS ODI Support 0000h mvpas ? N N (Win95) Pro Audio Spectrum driver 0000h NECATAPI ? N N (Win95) 0000h NICE ? N N (Win95) 0000h NTI4CDR ? Y Y NTI CD-R/CD-RW 0000h NV3 ? N N (Win95SR2) 0000h NWNBLINK N N N (Win4Workgroups 3.11) Netware NetBIOS 0000h OAK N N (Win95) Oak Tech display driver 0000h OCTK32 N N (W4Wg) 0000h OTCETH N N (W4Wg) 0000h PARALINK N N (Win95) 0000h PARALLAX ? ? IrDA Infrared Parallax framer VxD 0000h PCNTN3 N N (W4Wg) 0000h PE3NDIS N N (W4Wg) 0000h PPM N N (Win95) 0000h PROTEON N N (W4Wg) 0000h QEMMFix N N 0000h QIC117 N N (Win95) QIC-117 floppy-ctrl tape drive 0000h QPI N N QEMM Programming Interface (see INT 67/AH=3Fh) 0000h RMM N N Real-Mode Mapper for hw with real-mode drivers 0000h S3 N N (Win95) S3 display driver 0000h S3INFO N N 0000h S3MINI N N S3 display driver 0000h SAGE N N (Plus!) System Agent 0000h sage N N (Plus! for Win95) System Agent 0000h scsi1hlp N N (Win95) 0000h SERENUM N N 0000h SERIAL N N N (Win4Workgroups 3.11) DOS386 Serial Device 0000h SERWAVE ? N N 0000h SETP3 ? N N (Win95) Silicon Ethernet Pocket Adapter 0000h SLMSDENM ? Y Y 0000h SMARTVSD ? N N (EZ-SMART???) 0000h SMC8000W ? N N (W4Wg) 0000h SMC80PC ? N N (W4Wg) 0000h SMC8100W ? N N (W4Wg) 0000h SMC8232W ? N N (W4Wg) 0000h SMC9000 ? N N (W4Wg) 0000h SNIP ? N N (W4Wg) 0000h SOCKET ? N N (W4Wg) 0000h SOCKETSV ? N N (Win95) 0000h SPAP ? Y Y (Win95) 0000h SPENDIS ? N N (Win95) 0000h SRAMMTD ? N N (Win95) flash-memory driver??? 0000h STLTH64 ? N N Diamond Stealth64 driver 0000h STLTHMON ? N N 0000h T20N3 ? N N (W4Wg) 0000h T30N3 ? N N (W4Wg) 0000h TCTOK ? N N (W4Wg) 0000h TSENG ? N N (Win95) Tseng Labs display driver 0000h UBNEI ? N N (W4Wg) 0000h UNIMODEM ? ? ? (Win95) Universal Modem Driver 0000h VDEF ? N N (Win95) 0000h VGATEWAY ? N Y (Win95) dialin gateway 0000h VIDEO7 ? N N (Win95) Video7 display driver 0000h VRomD ? N N (Win95) 0000h VStDspcD ? ? ? Quarterdeck Stealth D*Space 0000h VXDMON ? ? ? 0000h WD ? N N (Win95) 0000h WINTOP ? N N (Windows95 Power Toys) 0000h WSHTCP ? N N 0000h XGA ? N N (Win95) XGA display driver 0001h VMM ? N N Virtual Machine Manager 0001h VMM ? Y Y Windows95 Virtual Machine Manager 0002h Debug ? ? ? 0003h VPICD ? Y Y Virtual Prog. Interrupt Controller (PIC) Device 0004h VDMAD ? N N Virtual Direct Memory Access (DMA) Device 0005h VTD ? Y Y Virtual Timer Device 0006h V86MMGR Y N N (Windows3.x) Virtual 8086 Mode Device 0006h V86MMGR ? N Y (Win95) Virtual 8068 Mode Device 0007h PageSwap ? N N Paging Device 0008h Parity ? N N Parity-check trapper 0009h Reboot ? N Y Ctrl-Alt-Del handler 000Ah VDD ? N Y Virtual Display Device (GRABBER) 000Bh VSD ? N N Virtual Sound Device 000Ch VMD Y Y Y Virtual Mouse Device 000Dh VKD ? N Y Virtual Keyboard Device 000Eh VCD ? N Y Virtual COMM Device 000Fh VPD ? N Y Virtual Printer Device 0010h VHD ? ? ? Virtual Hard Disk Device (Windows 3.0) 0010h BLOCKDEV Y N N Virtual Hard Disk Device (Windows 3.1) 0010h IOS N N N (Win4Workgroups 3.11) DOS386 IOS Device 0010h IOS ? Y Y Windows95 I/O Supervisor 0011h VMCPD ? Y Y (Windows3.x) Virtual Math CoProcessor Device 0011h VMCPD ? N Y (Win95) Virtual Math CoProcessor Device 0012h EBIOS ? N N Reserve EBIOS page (e.g., on PS/2) 0013h BIOSXLAT ? N N Map ROM BIOS API between prot & V86 mode 0014h VNETBIOS Y N N Virtual NetBIOS Device 0015h DOSMGR Y Y N DOS data instancing (see #02656) 0016h WINLOAD ? ? ? 0017h SHELL ? N Y (Windows3) 0017h SHELL ? Y Y (Win95) 0018h VMPOLL Y N N 0019h VPROD ? ? ? 001Ah DOSNET ? N N assures network integrity across VMs 001Ah VNETWARE ? Y Y Novell NetWare DOSNET replacement 001Bh VFD ? N N Virtual Floppy Device 001Ch VDD2 ? ? ? Secondary display adapter 001Ch LoadHi ? N N Netroom LoadHi Device (RMLODHI.VXD) 001Ch LoadHi ? N N 386MAX LoadHi Device (386MAX.VXD) 001Ch LoadHi ? N N Win386 LoadHi Device (EMM386.EXE) 001Dh WINDEBUG ? N Y 001Dh TDDebug ? N Y 001Eh TSRLoad ? ? ? TSR instance utility 001Fh BiosHook ? ? ? BIOS interrupt hooker VxD 0020h Int13 N N N 0021h PageFile Y N Y Paging File device 0022h SCSI ? ? ? 0022h APIX ? N Y (Win95) 0023h MCA_POS ? ? ? Microchannel Programmable Option Select 0024h SCSIFD ? ? ? SCSI FastDisk device 0025h VPEND ? ? ? Pen device 0026h APM ? ? ? Advanced Power Management 0026h VPOWERD ? Y Y (Win95) power management 0027h VXDLDR N Y Y (Win4Wg 3.11/Win95) VXD Loader 0028h NDIS N Y Y (Win4Wg 3.11) Network Driver Interface Spec 0029h ??? 002Ah VWIN32 ? N Y (Win95) 002Bh VCOMM N Y Y (Win4Workgroups 3.11) DOS386 VCOMM Device 002Ch SPOOLER ? N N Windows95 print spooler 002Dh W32S Y N Y WIN32s 32-bit extension to Windows API 002Eh ??? 002Fh ??? 0030h MACH32 N N Y ATI Mach32 video card 0031h NETBEUI N N N (Win4Workgroups 3.11) NETBEUI 0032h SERVER N Y Y (Win4Workgroups 3.11) Int21 File Server 0032h VSERVER ? N Y (Win95) Int21 File Server 0033h CONFIGMG ? Y Y (Win95) 0033h EDOS ? N N Windows DOS Box Enhancer by Mom's Software 0034h DWCFGMG.SYS ? Y ? DOS Plug-and-Play configuration manager 0035h SCSIPORT ? N N (Win95) virtualized access to SCSI adapter 0036h VFBACKUP ? Y Y (Win95) 0037h ENABLE ? Y Y (Win95) 0038h VCOND ? Y Y (Win95) 0039h ??? 003Ah VPMTD N N Y (Win4Workgroups 3.11) IFAX Scheduler Device 003Bh DSVXD ? Y N DoubleSpace VxD from MS-DOS v6.x 003Ch ISAPNP ? N N (Win95) 003Dh BIOS ? Y Y (Win95) 003Eh WSOCK ? Y Y (Win95) WinSock 003Fh WSIPX ? N N (Win95) IPX WinSock 0040h IFSMGR ? N N (Win95) 0041h VCDFSD ? N N (Win95) CD-ROM File System Driver (MSCDEX) 0042h MRCI2 ? N N (Win95) DriveSpace3 0043h PCI ? N N (Win95) 0048h PERF ? N N (Win95) 004Ah MTRR ? N N (Win95SR2) PPro/P-II MTRR enumerator??? 004Bh NTKERN ? N Y (Win95SR2) 0051h ISAPNP ? N N (Win95) ISA Plug-and-Play manager 008Dh ESDI_506 ? N N (Win95) MFM/RLL/ESDI disk driver 0090h voltrack ? N N (Win95) Volume Tracker 00FDh FAKEIDE ? N N (Chicago) 0102h CV1 ? N N Microsoft C/C++ 7.00+ CodeView for Windows 011Fh VFLATD ? N Y (Win95) 0200h VIPX ? Y Y NetWare Virtual IPX Driver 0200h VTEMPD ? ? ? dummy template driver by Ray Patch 0201h VNWLSERV ? N N NetWare Lite 1.1 Server (SERVER.EXE) 0202h WINICE ? Y Y SoftICE/W 0202h SICE ? Y Y 0203h VCLIENT ? N Y NetWare Lite 1.1+ Client 0205h VCAFT ? N N Novell Virtual CAFT Driver (LANalyzer for Win) 0205h BCW ? Y Y Nu-Mega Bounds Checker for Windows 0206h VTXRX ? N N Novell Virtual TXRX Driver (LANalyzer for Win) 0207h DPMS N Y N Novell DOS Protected Mode Services 0234h VCOMMUTE ? Y Y PC Tools Commute 0442h VTDAPI ? N Y MMSys Win386 VTAPI Device 0443h ??? 0444h VADMAD ? ? ? Autoinitialize DMA (Windows 3.0)

0445h VSBD ? Y Y WinResKit:
Sound Blaster Device 0446h VADLIBD Y Y Y MMSys Win386 AdLib Device (v3.x) 0447h ??? 0448h SETULTRA ? ? ? Gravis UltraSound setup 0449h vjoyd ? N Y (Win95) joystick 044Ah mmdevldr ? Y Y (Win95) 044Bh ??? 044Ch msmpu401 ? N N (Win95) MPU-401 MIDI driver 044Ch cwdmidi ? Y Y (Crystal???) MIDI driver 044Dh msopl ? N N (Win95) OPL-3 (SoundBlaster FM) driver 044Eh mssblst ? N N (Win95) SoundBlaster MIDI driver 045Dh VflatD ? N Y dva.386, part of WIN32s 045Eh ??? 045Fh mssndsys ? ? ? Microsoft Sound System audio driver 045Fh azt16 ? Y Y Aztech Sound Galaxy 16 audio driver 0460h UNIMODEM ? N Y Universal Modem driver 0480h VNetSup N Y Y (Win4Workgrps 3.11) Virtual Network Support 0481h VRedir N N N (Win4Workgroups 3.11) Redirector File System 0481h VREDIR ? N N (Win95) Redirector File System driver 0482h VBrowse ? Y Y Win386 Virtual Browser 0482h SNAPVXD ? Y Y (Win95) 0483h VSHARE ? N N (Win4Workgroups) Virtual SHARE 0483h VSHARE ? Y Y (Win95) Virtual SHARE 0484h IFSMgr Y N Y (Win4Wg 3.11) Installable File System Manager 0485h ??? ??? 0486h VFAT N Y Y (Win4Workgroups 3.11) Win386 HPFS Driver 0487h NWLINK ? Y Y Win386 Virtual Packet Exchange Protocol 0487h NWSUP Y N N NetWare Vnetbios shim 0488h VTDI ? N N (Win95) 0489h VIP ? Y N (Win95) 0489h FTCVIP ? Y Y Frontier Technologies' VIP 048Ah VTCP ? Y ? 048Ah MSTCP ? Y N (Win95) TCP stack 048Ah FTCTDI ? Y Y Future Technologies' TCP stack 048Bh VCache N Y Y (Win4Workgroups 3.11) Virtual File Cache 048Bh VCACHE ? Y Y (Win95) disk cache 048Ch ??? ??? 048Dh RASMAC ? Y Y enhanced mode Win4Workgroups RASMAC device 048Eh NWREDIR ? Y Y (Win95) 048Fh ??? ??? 0490h ??? ??? 0491h FILESEC ? ? ? (Win95) File Access Control Manager 0492h NWSERVER ? ? ? (Win95) 0493h SECPROV ? ? ? (Win95) Security Provider 0494h NSCL ? Y Y (Win95) 0495h AFVXD ? N N (Win95) 0496h NDIS2SUP ? ? ? (W4Wg???) NDIS2 networking support 0497h MSODISUP ? N N (W4Wg???) 0498h Splitter ? N N (Win95) 0499h PPPMAC ? Y Y (Win95) 049Ah VDHCP ? Y Y (Win95) 049Bh VNBT ? Y Y (Win95) NetBIOS-over-TCP/IP driver 049Ch ??? 049Dh LOGGER ? ? ? (Win95) 04A2h IRLAMP ? ? ? IrDA Infrared Enumerator VxD 097Ch PCCARD ? N Y (Win95) (see INT 20/VxD=097Ch) 1020h VCV ? ? ? Microsoft C/C++ 7.00 CodeView 1021h VMB ? Y Y Microsoft C/C++ 7.00 WXSRVR 1022h Vpfd ? Y Y Microsoft C/C++ 7.00 1025h MMD ? Y Y Microsoft C/C++ 8.00, Visual C/C++ 1.00 2020h PIPE ? Y Y by Thomas W. Olson, in Windows/DOS DevJrn 5/92 21EAh VADLIBWD ? N Y Adlib Waveform Driver by John Ridges 2200h VFINTD ? Y Y Norton VFINTD (Norton Desktop) 22C0h ??? Y Rational Systems DOS/4GW ??? 2402h ZMAX ? N N Qualitas 386MAX v7 DOSMAX handler 24A0h VNSS ? N Y Norton Screen Saver (Norton Desktop) 24A1h VNDWD ? Y Y Norton VNDWD Device (Norton Desktop) 24A2h SYMEvent ? Y Y Norton Utilities v8 2540h VILD ? Y N INTERLNK client from MS-DOS v6.x

2640h VASBID ? N Y WinResKit:
Artisoft Sounding Board Device 2860h COMMTASK N N Y Windows 386-mode preemptive tasker by James A. Kenemuth of Interabang Computing 28A0h PHARLAPX ? Y ? PharLap inter-VM communications DLL 28A1h PharLap Y Y Y PharLap 386|DOS-Extender DOSXNT.386 28C0h VXD N Y Y Generic VxD for real and protected mode by Andrew Schulman in MSJ February 1993 28C1h PUSHKEYS ? ? ? VKD_Force_Keys device 28C2h VCR3D ? ? ? Virtual CR3, by A.Schulman in MSJ October 1992 2925h EDOS ? Y Y Enhanced DOS by Firefly Software 292Dh VSBPD ? Y Y Sound Blaster Pro 295Ah GRVSULTR ? Y Y Gravis UltraSound / UltraSound ACE 3048h FTCTCPIP ? N Y Frontier Technologies' TCP/IP stack 3049h ??? (called by FNFSC32.VXD, FrontierTech's VNFSD) 304Ch DWCFGMG.SYS ? Y Plug-and-Play configuration access 3098h VstlthD N N N for QEMM Stealth ROM mode 3099h VVidramD ? Y N for QEMM VIDRAM support 30F6h WSVV ? N Y (Win95) WinSock for Voice-View Modems???

310Eh WPS ? N Y MS DevNet CD-ROM:
Windows Process Status 3110h VGSSD ? Y Y VSGLX16.386 for Aztech Sound Galaxy 16 313Bh PMC ? ? ? Power Management Coordinator 318Ah LMOUSE ? Y Y (Win95) Logitech mouse??? 31CFh STAT.386 ? ? ? Ton Plooy's processor statistics VxD 3202h VdspD ? N N (Win95) 3203h vpasd ? N N (Win95) Pro Audio Spectrum driver 32A4h SBAWE ? Y Y (Win95) SoundBlaster AWE driver 32A5h VSB16 ? N N (Win95) SoundBlaster 16 driver 32CBh VFRAD ? Y Y Dr.Franz - Simultan's diagnotics VFRAD.386 32DCh NV3RM ? N Y (Win95SR2) 3354h Discover ? N Y (Nuts&Bolts) Discover 33AAh DECCORE ? Y Y (Win95) DEC Pathworks core VxD 33B4h DECLICL ? N N (Win95) 33F0h VIWD ? Y Y Gravis UltraSound Plug-n-Play Interwave v1.x 33FCh ASPIENUM ? N N (Win95) 34DCh MAGNARAM ? N Y Quarterdeck MagnaRAM (MAGNA31.VXD/MAGNA95.VXD) 357Eh DSOUND ? Y Y (Win95) DirectSound 3584h VSNDSYS ? Y Y (Win95SR2) 35C5h LUGEPS ? Y Y Lugaru's Epsilon editor 36AEh AIB-PC.386 ? Y Y Sunset Laboratory interface hardware driver 377Bh MX1501HAD ? ? ? Cherry keyboard chipcard reader 38BEh Vheapx ? N Y (Nuts&Bolts) Virtual Heap Expander 38C0h Bombshel ? N Y (Nuts&Bolts) Bombshelter 38DAh VIWD ? Y Y UltraSound PnP InterWave driver v2.0beta 39E6h A3D ? N N (Win95SR2) 3A39h CINEMSYS ? Y Y Software Cinemaster MPEG/DVD decoder 3BFCh CWCSPUD ? N N (Win95SR2) 3BFDh CWCPROXY ? N N (Win95SR2) 3BFEh CWCMMSYS ? N Y (Win95SR2) 3BFFh CWCDSND ? N N (Win95SR2) 3C46h X10MOUSE ? Y Y X10 RF wireless mouse 3C78h VGARTD ? N N (Win95SR2) 3E6Dh DDRAW ? Y Y DirectDraw 3ED6h ATIVVXXX ? N Y ATI Rage128-based video card 3EE5h WINTEL.VXD ? ? ? "WinTel" Windows remote-control program (see also PORT 063Eh) 4321h POSTMSG ? Y Y (see #02712) 4321h VPCD ? N N PCache 4321h avvxp500 ? N N (Win95) VxP500 driver 6001h REGVXD ? Y Y Windows95 Registry Monitor helper 7A5Fh SIWVID Y Y Y Soft-ICE for Windows video driver 7FE0h VSWITCHD ? Y N by Jeff Prosise 7FE0h VWFD N Y Y reports windowed/fullscreen state; by Neil Sandlin of Microsoft, shipped with ANSIPLUS 7FE1h VWATCHD N Y Y basic driver w/ no functionality except tracing by Keith Jin of Microsoft PSS 7FE5h VFINTD N Y Y Virtual Floppy Interrupt trapper by Neil Sandlin of Microsoft 7FE7h VMPAGES N Y Y demonstration of exporting VxD services, by Neil Sandlin of Microsoft 7FE8h VPOSTD ? Y Y PostMessage() demo by Curtis J. Palmer of MS 7FE9h VIdleD N N N demonstration of Call_When_Idle function, by Bernie McIlroy of Microsoft 7FEBh VMIOD N N N Virtual Monitor I/O Traffic Device, by Neil Sandlin of Microsoft 7FEDh VMIRQD N N N Virtual Monitor IRQ Traffic Device, by Neil Sandlin of Microsoft 8888h VbillD ? ? ? Bill Potvin II's for reversing Compaq LTE video EEEEh VEPSD ? N N Virtual Extended Paging Services for Borland C++ v4.0

Notes: The high bit of the VxD ID is reserved for future use. Originally, the next 10 bits were the OEM number which was assigned by Microsoft, and the low 5 bits were the device number. Currently, Microsoft assigns VxD IDs individually for each driver; send blank email to vxdid@microsoft.com for more information.. "CallOut"=Y indicates that the VxD uses the INT 2F/AX=1607h/BX=VxDID device callout interface; "PM" and "V86" indicate whether the VxD provides an API entry point in protected mode and Virtual-86 mode (e.g. DOS boxes)

Category: Windows - Int 2Fh - M

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