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| OpenGL | RTLinux | MSystems | NI ./ Mathworks |
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It is not possible to port operating systems to certain new hardware, because the manufacturers have retained control by obtaining software patents. Intel has done this for some chips, and MSystems did it for flash memory. When people do write software, it cannot be free, if it can be published at all. In the whole area of memory programming it is very hard not to run afoul of some patent. This is deterring programmers.
