PPT 슬라이드

If/Elsif Example and Rules

1. The first condition found to be true will be executed.2. Conditions can overlap.3. The first condition of an if / elsif will have priority.

process ( A, B, C, D, Sel )beginIf ( Sel = “00” ) then Z <= A;elsif ( Sel = “01” ) then Z <= B;elsif ( Sel = “10” ) then Z <= C; else  Z <= D; end if; end process ;

D

C

B

A

Z

Z <= A when (Sel = “00”) else B when (Sel = “01”) else C when (Sel = “10”) else D ;

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