Liberty file
A .lib file that describes standard cells' function, timing and power for synthesis and timing tools.
Open reference →VLSI reference library
Look up a concept, code symbol or debugging topic. Continue into the lesson for examples, practice and the next step in your learning path.
Learning references
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Mount point
A directory at which a filesystem is attached to the directory tree.
Open reference →PATH
An ordered list of directories used by a shell to find executables.
Open reference →Pattern rule
A Make rule using % to describe how to build a family of targets from matching prerequisites.
Open reference →Phony target
A Make target that names an action rather than a file, declared with .PHONY so it always runs.
Open reference →Process
A running program with a PID, state and resource use.
Open reference →Random seed
The starting value for a pseudo-random generator; recording it makes a random test reproducible.
Open reference →Regression
Repeated execution of a defined set of tests, often with several seeds, to detect behaviour that has broken.
Open reference →Regular expression
A pattern language for matching text, used by grep, sed, awk, Python re and Tcl regexp.
Open reference →Reproducibility
The ability to rerun a documented command with known inputs, tool versions and expected evidence.
Open reference →SDC
Synopsys Design Constraints, a widely supported Tcl-based format for clocks, I/O delays and timing exceptions.
Open reference →SHA-256
A cryptographic hash used to compare artifact integrity against a trusted checksum.
Open reference →SSH host key
A server identity key whose fingerprint should be verified through a trusted channel.
Open reference →Shebang
The first line of a script, such as #!/usr/bin/env bash, that selects the interpreter.
Open reference →Shell
A program that interprets command input and starts other programs.
Open reference →Sigil
The symbol before a Perl name: $ for one value, @ for a list and % for a hash; it shows the kind of value being used.
Open reference →Standard error
File descriptor 2, conventionally used for diagnostics.
Open reference →Static timing analysis
Checking every timing path against constraints without simulation, as done by OpenSTA.
Open reference →Strict mode
The Bash settings set -euo pipefail, which stop a script on failed commands, unset variables and failed pipeline stages.
Open reference →Symbolic link
A filesystem entry that stores a path to another entry.
Open reference →Build on what you find
Follow the eight-week programme to connect individual concepts with design decisions, simulation, debugging and verification evidence.
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