Overlapping Cases with Unique Warning
A memory map decoder assigns a 4-bit address to one of three distinct memory regions.
Expected behavior:
| addr (decimal) | region | |------------------|----------| | 0, 1, 2, 3 | 0 | | 4, 5, 6, 7 | 1 | | 8 through 15 | 2 |
Simulation logs show a runtime warning regarding overlapping unique case conditions. Post-synthesis testing shows region = 2 for input addr = 5. The expected output is 1. Inspect the circuit and correct the fault.
Constraints
- Do not remove the unique keyword from the case statement
- Maintain the intended priority and mapping
- All address conditions must be mutually exclusive
Topics
Solve this problem
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