Date Added: Jun 2011
Verifying firm real-time requirements get increasingly complex, as the number of applications in embedded systems grows. Predictable systems reduce the complexity by enabling formal verification. However, these systems require predictable software and hardware components, which are problematic for resources with highly variable execution times, such as SDRAM controllers. A predictable SDRAM controller has been proposed that addresses this problem using predictable memory patterns, which are pre-computed sequences of SDRAM commands. However, the memory patterns are derived manually, which is a time-consuming and error-prone process that must be repeated for every memory device, and may result in inefficient use of scarce and expensive bandwidth.