Hardware/Software Introduction Chapter 1 Introduction
Embedded Systems Design: A Unified Hardware/Software ... - EET
Embedded Systems Design: A Unified Hardware/Software ... - EET
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Increases confidence<br />
• Simulating all possible input sequences impossible for most<br />
systems<br />
– E.g., 32-bit ALU<br />
• 2 32 * 2 32 = 2 64 possible input combinations<br />
• At 1 million combinations/sec<br />
• ½ million years to simulate<br />
• Sequential circuits even worse<br />
• Can only simulate tiny subset of possible inputs<br />
– Typical values<br />
– Known boundary conditions<br />
• E.g., 32-bit ALU<br />
– Both operands all 0’s<br />
– Both operands all 1’s<br />
• Increases confidence of correctness/completeness<br />
• Does not prove<br />
Embedded Systems Design: A Unified<br />
<strong>Hardware</strong>/<strong>Software</strong> <strong>Introduction</strong>, (c) 2000 Vahid/Givargis<br />
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