Associative array
A sparse collection that stores only written entries, indexed by a key of any type.
Open reference →VLSI reference library
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Learning references
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Automatic variable
A Make variable such as $@, $< or $^ that refers to the current target or its prerequisites.
Open reference →C shell
csh and its extended version tcsh, an older Unix shell still used by many EDA site and tool setup scripts.
Open reference →Class
A user-defined type that bundles properties and methods and is created at run time.
Open reference →Clocking block
A block that defines when a testbench samples and drives signals relative to a clock.
Open reference →Concurrent assertion
An assertion sampled on a clock that checks a temporal property over cycles.
Open reference →Constraint
A Boolean rule that random values must satisfy when randomize() is called.
Open reference →Coverage closure
The process of finding and closing coverage holes until the plan goal is met.
Open reference →Covergroup
A construct that defines coverpoints, bins and crosses for functional coverage.
Open reference →Cross coverage
Coverage of combinations of bins from two or more coverpoints.
Open reference →Dataclass
A Python class declared with @dataclass that stores fields and generates common methods automatically.
Open reference →Deep copy
A copy that also creates new copies of nested objects instead of sharing them.
Open reference →Dynamic array
An unpacked array whose size is set at run time with new[].
Open reference →Enumeration
A user-defined type with named values, declared with enum.
Open reference →Environment module
A tool description loaded with module load that sets PATH and related variables for one tool version, in any shell.
Open reference →Environment variable
A named value inherited by child processes when exported.
Open reference →Exit status
The number a process returns to its caller; 0 means success and any other value signals a specific failure.
Open reference →Exit status
A numeric result returned by a process; zero normally indicates success.
Open reference →Failure signature
An error message with run-specific values removed, used to group failures that share a cause.
Open reference →File list
A text file of source paths, often with a .f extension, passed to a simulator or linter.
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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