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Integrated and Modular Systems for Commercial ... - Nonstop Systems

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lliedSignal<br />

A E R O S P A C E<br />

Processor selection criteria - cont’d<br />

• power consumption<br />

� desired: < 0.5 W (no 35 W Pentium ® Pro if using 4-10 µPs per cabinet or LRU)<br />

• temperature range<br />

• cache (instruction & data) size <strong>and</strong> level<br />

� L2/L3 may not be desired<br />

• memory management<br />

� virtual addresssing (page based)<br />

• error checking capability (e.g., bus parity)<br />

• exception & interrupt h<strong>and</strong>ling<br />

� at Kernel & Application Exec level<br />

� at application level<br />

• availability <strong>for</strong> integration<br />

� eventually: processor-die + memory + peripherals + bus I/F into single ASIC<br />

- hold-off actual selection as long as possible -<br />

38

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