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If, Else and Elsif

Definition#

If, Else and Elsif can be used like without Thread, but you can use Wait, While... inside and next to it.

Examples#

Thread {     If (BTN = '1')     {         LED <= '1';     }     Wait (10000);}

Without Thread, the If would ignore procedure operations and would not wait after checking. This example checks every 10000 cycles if BTN is high and sets LED high if true.