Multiple Driver Resolution Failure
A shared internal data bus routes data from multiple peripheral registers to a central processor core.
Expected behavior:
| sel_a | sel_b | data_a | data_b | bus_out | |---------|---------|----------|----------|-----------| | 0 | 0 | 0 | 0 | 0 | | 0 | 0 | 1 | 1 | 0 | | 0 | 1 | 0 | 1 | 1 | | 0 | 1 | 1 | 0 | 0 | | 1 | 0 | 1 | 0 | 1 | | 1 | 0 | 0 | 1 | 0 | | 1 | 1 | 1 | 0 | 1 | | 1 | 1 | 0 | 1 | 0 |
Compilation fails with a multiple-driver error on the bus_out signal. The test bench cannot simulate the design because the strict single-driver rule for the logic data type is violated. Inspect the circuit and correct the fault.
Constraints
- Do not change the module port list.
- Drive the output using a single multiplexed data path.
sel_atakes priority oversel_bif both are asserted simultaneously.
Topics
Solve this problem
Place the gates, wire them up and watch the signals settle. Every submission runs on the same simulation engine that grades it.
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