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

ID: Q84191

The information in this article applies to:

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

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 file is available for download from the Microsoft Software Library:

 ~ Proton.exe (size: 22987 bytes)

For more information about downloading files from the Microsoft Software Library, please see the following article in the Microsoft Knowledge Base:

   ARTICLE-ID: Q119591
   TITLE     : How to Obtain Microsoft Support Files from Online Services

Additional query words: Keywords : kbfile kbsample KrMmDosdpmi

Last Reviewed: July 25, 1998