behavior和' structure 识别bck是行为级描述或结构级描述 例 ASSert latch behavior REPORT Block latchI is not a behavioral description SEVERITY note ASSERT latchI,structure REPORT Block latchI is not a structural description SEⅤ ERITY note
’behavior 和 ’structure 识别block是行为级描述或结构级描述。 例： ASSERT latch1’behavior REPORT “Block latch1 is not a behavioral description”; SEVERITY note; ASSERT latch1’structure REPORT “Block latch1 is not a structural description”; SEVERITY note;
元件实例化语句 介绍元件声明和元件实例化语句。 (仅用于结构级描述)
二、元件实例化语句 介绍元件声明和元件实例化语句。 （仅用于结构级描述）
元件实例化的顺序: 先声明 后实例化
元件实例化的顺序： 先声明 后实例化
元件声明描述了元件的接口关系 格式: component declaration.. COMPONENT identifier generic clause port clause END COMPONENT
元件声明描述了元件的接口关系 格式： component declaration … COMPONENT identifier generic_clause port_clause END COMPONENT;
component instantiation statement... label: name generic map aspect port map aspect generic map aspect ... GENERIC MAP (association list) port map aspect PORT MAP (association list) Association list association element. association element
component instantiation statement……label: name generic_map_aspect port_map_aspect ; generic map aspect …… GENERIC MAP (association_list) port map aspect …… PORT MAP (association_list) Association list …… association_element, association_element …