Using Yaffs with other RTOSs

Anyone can develop and test Yaffs within your organisation with no 
restrictions. That's the Yaffs "Try Before You Buy" feature. We can do 
this because Yaffs is available under two Licenses, GPLv2 and Commercial.

If you develop and release software which links to Yaffs you won't 
encounter any Licensing difficulties so long as you meet your GPL 
obligations, which include *releasing your OS and application code*. And 
that code also must be released with a GPLv2-compatible License.
So you cannot take someone else's code and release it under GPL; it's 
not yours and you cannot change its licensing.

Further, if a customer of yours builds on your software perhaps with 
another Operating System, or no OS, and releases it then anyone can take 
any of that code and use it as they wish under GPL /provided that they 
also///meet the GPL obligations on releasing OS and application code.

There are people who do not wish to, or are not able to, release their 
OS and Source code, and they need a Licence for Yaffs.
There are people who expect to use Yaffs with software from other 
sources, although that software is not licensed in a way that is 
compatible with GPLv2.
Amongst these, for examples, are eCoscentric and Wind River.

We have an agreement with eCosCentric about your joint use of their 
code, which they can tell you about.

You cannot release code of VxWorks from Wind River, as the VxWorks 
License forbids that, and so Yaffs users also using VxWorks need to have 
a License for Yaffs too.

If you have that, then we can provide you with auxiliary non-VxWorks 
code to facilitate integrating them.

LvS, Director

-- 
Laurie van Someren, Aleph One Ltd, 123 High Street, Bottisham, CAMBRIDGE 
CB25 9BA UK T: +44 (0)1 223 811 679 www.aleph1.co.uk & www.yaffs.net . . 
. . Lentius in Omnibus Progrediens