X propagation

Escape formal's narrower definitions with a flow that shows you how to Avoid, Detect, Erase, Prove Absence and Tape Out while avoiding bugs.

Three senior verification specialists talk about how they are navigating the challenge of verifying multibillion-transistor SoCs with limited compute resource, increasing coverage demands and shrinking timescales.

Sequential equivalence checking can help trap errors introduced by clock gate insertion, uninitialised registers, and X propagation issues.

Traditional approaches do not catch all unknown state sources, lack capacity for big SoCs and mask bugs. Ascent XV addresses and overcomes these issues.

The argument for an integrated approach to SoC verification

How Wall Street's vastly resourced IT teams already point the way to cheaper, faster and more efficient verification by putting goals not tools first.

As designs get larger and stress the ability of simulation to exercise an SoC, formal techniques have become essential parts of design and verification.

Reset is no longer simply an 'X' issue but also feeds into power optimization. Catching issues early greatly speeds verification.

Catching x-propagation issues at RTL saves time and reduces uncertainty in gate-level verification

X propagation within RTL simulations can hide fatal bugs. Uncovering and eliminating the effect improves design quality and avoids respins.