Double Clocking Synthesis Failure
Standard cell libraries provide flip-flops that trigger on a single clock edge to ensure predictable setup and hold times across a synchronous design.
The provided Verilog snippet contains an always @(posedge clk or negedge clk) block driving an output register q from an input d.
Analyze the synthesis failure generated by this construct. Identify why standard logic compilers reject this pattern and determine the correct hardware primitives required for dual-edge data rates.
Constraints
- Assume a standard ASIC or FPGA cell library without native dual-edge flip-flops.
- The synthesis tool is Yosys running a standard synthesis script.
- The target architecture relies on discrete logic cells for standard sequential logic.
Topics
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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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