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Scratchpad memory is a popular choice for on-chip storage in real-time embedded systems. The allocation of program elements to scratchpad memory is performed at compile time leading to predictable memory access latencies. Current scratchpad memory allocation techniques mainly improve the average-case execution time of tasks. For hard real-time systems, however, worst case execution time (WCET) is...
Performance analysis is important in real-time system design. As the transaction sets in real-time system became more and more complicated, the traditional mathematic techniques encountered considerable limitations. By converting all kinds of real-time transactions into pseudo-period ones, we can only get the real-time performance under the worst case. Aiming at this problem, we developed a simulation...
The paper currency characteristic data acquisition system is a real-time subsystem of bill acceptor system based on ARM and uClinux, but uClinux can not meet the real-time requirement of the data acquisition system. After considering the characteristic of uClinux and the hardware of the data acquisition system, a method for improving the real-time ability of the data acquisition system is proposed...
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