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Microsoft to allow changes to Windows CE source

Microsoft plans to share more of Windows CE's source code and allow device makers to make changes to that code.

Microsoft plans to ill share more of its  Windows CE software source code and allow device makers to make changes...

to that code.

This is the first time that Microsoft will allow others to make changes to the operating system source code, compile the code for use in commercial products and not have to share their changes with Microsoft or anybody else, said John Starkweather, a Microsoft product manager.

Windows CE was developed for devices including consumer electronics, wireless routers, industrial controllers, handheld computers, set-top boxes, VoIP (voice-over-Internet Protocol) phones and thin clients. It competes with proprietary operating systems as well as with versions of the open-source Linux operating system designed for embedded use.

"The option to ship derivatives of Windows CE will give device makers another opportunity to innovate, thus we will see a further expansion of the types of devices that are powered by Windows CE," Starkweather said.

The expanded source licensing for Windows CE will come with Windows CE 5.0, which was previously code-named Macallan. The software succeeds Windows CE 4.2 and is scheduled to be released to manufacturing on 9 July.

More than 2.5 million lines of code will be available for Windows CE 5.0, including the kernel, user interface, hardware drivers and networking stack, Starkweather said.

For Windows CE 4.2, Microsoft made about two million lines of code available, which users were allowed to use only for reference and debugging purposes.

The expanded source code licensing with Windows CE 5.0 comes in addition to the Windows CE Shared Source Premium programme that Microsoft launched last year. Under that programme, licensees can get almost all of the CE source code and make modifications to it, but they are required to share their changes with Microsoft, Starkweather said.

Additionally, the Shared Source Premium programme was limited to a small group of chip makers and device makers in a limited number of countries. With Windows CE 5.0, any licensee in any country will be able to access to the source code, Starkweather said.

Joris Evers writes for IDG News Service

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