I/O Device Serialization and Virtualization

 Last reviewed: February 15, 1996
Article ID: Q68975
The information in this article applies to:
  • Microsoft Windows Device Development Kit (DDK) for Windows versions 3.0 and 3.1

The Software Library contains a document that describes two techniques that an application can use to support or simulate hardware devices when Microsoft Windows is running in 386 enhanced mode. This document also refers to two sample programs that have been written to help illustrate the topics mentioned here. This information may be helpful to a hardware vendor that is trying to support a product under Windows, or to someone who wants a better understanding of how Windows performs I/O operations in 386 enhanced mode.

Download DEVVIRTS.EXE, a self-extracting file, from the Microsoft Software Library (MSL) on the following services:

  • Microsoft Download Service (MSDL) 

          Dial (206) 936-6735 to connect to MSDL
      Download DEVVIRTS.EXE (size: 20996 bytes)
  • Internet (anonymous FTP) 

          ftp ftp.microsoft.com
      Change to the \softlib\mslfiles directory
      Get DEVVIRTS.EXE (size: 20996 bytes)

The VDIALOG and VITD VxDs are small, straightforward samples that are a good place to begin to learn about this aspect of Windows programming. VDIALOG and VITD are sample applications provided with version 3.1 of the Microsoft DDK. These files are also available in the Microsoft Software Library.

Download VDIALOG.EXE, a self-extracting file, from the Microsoft Software Library (MSL) on the following services:

  • Microsoft Download Service (MSDL) 

          Dial (206) 936-6735 to connect to MSDL
      Download VDIALOG.EXE (size: 31626 bytes)
  • Internet (anonymous FTP) 

          ftp ftp.microsoft.com
      Change to the \softlib\mslfiles directory
      Get VDIALOG.EXE (size: 31626 bytes)

Download VITD.EXE, a self-extracting file, from the Microsoft Software Library (MSL) on the following services:
  • Microsoft Download Service (MSDL) 

          Dial (206) 936-6735 to connect to MSDL
      Download VITD.EXE (size: 28379 bytes)
  • Internet (anonymous FTP) 

          ftp ftp.microsoft.com
      Change to the \softlib\mslfiles directory
      Get VITD.EXE (size: 28379 bytes)

Additional reference words: 3.00 3.10 DDKVXD DEVVIRTS.ZIP VDIALOG.ZIP
VITD.ZIP softlib DEVVIRTS.EXE VDIALOG.EXE VITD.EXE
KBCategory: kbprg kbfile
KBSubcategory: D3MiscCoding

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Last reviewed: February 15, 1996
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