Microsoft KB Archive/84191

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Proton.exe Uses DPMI Host for MS-DOS Protected Mode Apps

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Q84191

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The information in this article applies to:


 * Microsoft Windows Device Development Kit (DDK) for Windows, versions 3.0, 3.1

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SUMMARY
A protected mode MS-DOS application can use the MS-DOS Protected Mode Interface (DPMI) to access the services provided by the enhanced mode of the Microsoft Windows graphical environment, versions 3.0 and 3.1. Proton.exe is a sample that demonstrates how to use DPMI. Proton.exe contains the source to an MS-DOS application that switches itself into protected mode, performs various protected mode tasks, and then terminates, returning back to real mode MS-DOS.

The documentation for DPMI is available from Intel. In the United States, call (800) 548-4725. Outside the US, contact the appropriate Intel subsidiary or distributor.

MORE INFORMATION
The following files are available for download from the Microsoft Download Center. Click the file names below to download the files:

"Proton.exe" For more information about how to download files from the Microsoft Download Center, please visit the Download Center at the following Web address

"http://www.microsoft.com/downloads/search.asp" and then click How to use the Microsoft Download Center.

Additional query words:

Keywords : kbfile kbsample KrMmDosdpmi

Issue type : kbinfo

Technology :