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Cache memories are crucial to obtain high performance on contemporary processors. However, they have been traditionally avoided in embedded real-time systems due to their lack of determinism. Unfortunately, most of the techniques to attain predictability on caches are complex to apply, precluding their use on real applications. This work reviews several(More)
Cache memories can improve computer performance, but its unpredictable behaviour makes difficult to use them in hard real-time systems. Classical analysis techniques are not sufficient to accomplish schedulability analysis, and new hardware resources or complex analysis algorithms are needed. This work presents a comprehensive method to obtain(More)
The use of embedded PC in control systems is increasing. There exist a significant number of real-time operating systems but RT-Linux provides several advantages over most of them. RT-Linux shares the processor with standard Linux allowing to run accurately timed applications to perform data acquisition and control systems with Linux applications. However,(More)
Static use of locking caches is a useful solution to take advantage of cache memories in real-time systems. Locking cache operates preloading and locking a set of instructions, thus cache contents are a-priori known and remain unchanged during system operation. This solution eliminates the unpredictable behavior of conventional caches, making easy to(More)
A new fluorescent sensor based on a dimethylxanthene skeleton has beensynthesized. Because of its oxyanion hole structure, this receptor includes a suitablecavity for the association of carboxylic acids. The receptor's fluorescence is quenchedupon addition of dinitrobenzoic acid.
The most frequently studied tumour in a target organ for steroid activity has been breast cancer in women. The hormone-dependent nature of these tumours is now accepted as being related to the presence of oestradiol and progesterone. The fact that these receptors are found in mammary tumours might be connected with one aspect of cell differentiation which(More)