guarded
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VHDL Reserved Word: guarded
Purpose
Option for a concurrent signal assignment. The guarded option specifies that the signal assignment statement will execute only when the guard condition of the block statement that contains the assignment is true.
Syntax
concurrent_signal_assignment_statement ::=
[label:] [guarded] conditional_signal_assignment
| selected_signal_assignment
Example
b1: block (example = '1')
begin
z <= guarded not a;
end block b1;
不知道搂主能看懂不
after x ns是不可以综合的,只能用于仿真 |