PPT 슬라이드

Case Examples and Rules

1. All possible conditions must be specified.2. No conditions can overlap.3. All range specifications must be of a discrete type.

process (A, B, C, D, Sel )begincase Sel is when “00” => Z <= A ; when “01” => Z <= B ;  when “10” => Z <= C ; when others => Z <= D ;end case ;

• Case statements are preferable for LUT architectures given that most synthesis tools will produce a mux, or similarly minimal logic level structure.

With sel select Z <= A when “00”, B when “01”, C when “10”, D when others;

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