Debug Combinational: False Path Identification
A control routing circuit uses a two-stage multiplexer network to process a data signal C based on control inputs A and B.
Expected behavior:
| A | B | C | Y | |-----|-----|-----|-----| | 0 | 0 | 0 | 0 | | 0 | 0 | 1 | 0 | | 0 | 1 | 0 | 0 | | 0 | 1 | 1 | 0 | | 1 | 0 | 0 | 0 | | 1 | 0 | 1 | 1 | | 1 | 1 | 0 | 1 | | 1 | 1 | 1 | 0 |
Simulation shows Y = 1 for input A=1, B=0, C=0, and Y = 0 for input A=1, B=0, C=1. The circuit also fails for A=0, B=1, C=0, outputting 1 instead of 0. Inspect the circuit and correct the fault.
Constraints
- Do not add new gates or wires.
- Identify and replace exactly one faulty component.
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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