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  • Syntax

Vl-always

Representation of an always statement.

This is a product type introduced by defprod.

Fields
type — vl-alwaystype-p
What kind of always block this is, e.g., always, always_comb, always_latch, or always_ff.
stmt — vl-stmt
The actual statement, e.g., @(posedge clk) myreg <= in below. The statement does not have to include a timing control like @(posedge clk) or @(a or b or c), but often does.
atts — vl-atts
Any attributes associated with this always block.
loc — vl-location
Where the always block was found in the source code.

Always statements in Verilog are often used to model latches and flops, and to set up other simulation events. A simple example would be:

module mymod (a, b, ...) ;
  always @(posedge clk) myreg <= in;
endmodule

Subtopics

Vl-always-p
Recognizer for vl-always structures.
Vl-always-fix
Fixing function for vl-always structures.
Vl-always-equiv
Basic equivalence relation for vl-always structures.
Make-vl-always
Basic constructor macro for vl-always structures.
Vl-always->type
Get the type field from a vl-always.
Change-vl-always
Modifying constructor for vl-always structures.
Vl-always->stmt
Get the stmt field from a vl-always.
Vl-always->loc
Get the loc field from a vl-always.
Vl-always->atts
Get the atts field from a vl-always.