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Understand how to handle signal assignment with two drivers occurring at different times with helpful examples and explanations. Learn about the relationships between variables and signals in such scenarios.

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  1. question • What to do if there are two drivers for a signal occuring in various moments of time?

  2. Signal Assignment Rules

  3. Example 1 1 1 ta This comes next so is “stronger” Z 1 Z

  4. Z This comes next so is “stronger” 1 1 1 1

  5. Example 3 This comes next so is “stronger” 1 Z

  6. Example 4 “i” is variable so takes this period, not previous, so “1” starts in moment 3 0 1 2 3 4 0 0 0 1 1 ta This comes next so is “stronger” Z 0 0 0 1 Z

  7. Z This comes next so is “stronger” 1 1 1 1

  8. Some old and some new relations between variables and signals

  9. a=0 We use old value which is 0

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