Windows Supports DPMI Specification Level 0.9 Only (121962)
The information in this article applies to:
- Microsoft Windows 3.1
- Microsoft Windows 3.11
- Microsoft Windows for Workgroups 3.1
- Microsoft Windows for Workgroups 3.11
- Microsoft Windows 95
- Microsoft Windows 98
This article was previously published under Q121962 SYMPTOMS
When you start the programs listed below in Windows, you receive the
following error message:
Phar Lap err 74: Can't use - REALBREAK under this version of DPMI
Applications that are known to cause this error message include:
- AutoCAD for DOS version 12 by AutoDesk
- DOS GIS by Surpac
- FIFA Soccer by Electronic Arts
CAUSE
The application that you are trying to run requires services from the DPMI
server that are not available in Windows.
Microsoft Windows supports the DPMI specification version 0.9 with the
math coprocessor functions 1.0. Phar Lap is a DOS extender that has its
own set of libraries of services for the DPMI specification level 1.0.
If your MS-DOS-based application needs services from level 1.0 of this
specification, it cannot run in Windows.
RESOLUTION
Run the application outside of Windows, in MS-DOS mode.
MORE INFORMATION
When an application is running in real mode, it can invoke a DPMI server.
Windows launches a DPMI server when it is loaded; therefore, if you run
your application in Windows, it uses the DPMI server that is already
present. If the application makes a call to a service that is supported by
DPMI 1.0, you receive an error message, and the application halts.
| Modification Type: | Minor | Last Reviewed: | 12/16/2004 |
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| Keywords: | kb3rdparty kbenv kbprb KB121962 |
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