编写测试平台 (Testbench): 这也是一个VHDL实体(entity),通常没有端口。 在architecture内: 例化(instantiate)待测设计作为组件(component)。 生成输入激励 (stimulus)(时钟信号、复位信号、模拟输入信号的变化序列)。 监视(monitor)和断言 (assert)输出信号。 可输出波形(waveform)文件
entityBUF_TESTBENCHis endBUF_TESTBENCH;architectureSTRUCT_BUF_TESTofBUF_TESTBENCHis signalTEST1,TEST2:BIT:='1';--BUF_COMPcomponent declaration:componentBUF_COMPisgeneric(TIME_DELAY:TIME);port(IN1:inBIT;OUT1:outBIT);end component;begin--instantiationofBUF_COMPcomponent:DUT:BUF_COMPgenericmap(10ns...
② 将波形信号发生器与ADDER4组装为一个VHDL仿真测试模块 ENTITY BENCH IS END; ARCHITECTURE one OF BENCH IS COMPONENT ADDER4...利用仿真器的波形设置命令施加激励信号 force命令的格式如下: force 信号名> [][, …] [-repeat ] force a 0 (强制信号的当前值为...LOAD 输入的数据 wait for 15 ns; ...
在 VHDL-93 中,您可以像这样直接实例化实体:“ Label_name: entity work.component_name port map (port list) ;”。 例如,要在 VHDL 中实例化实体 clk_div,将在体系结构代码中添加一个组件声明,如下所示: architecture Behavioral of digital_clock is -- component declaration before instantiation below ...
component_instantiation_statement::= instantiation_label : instantiated_unit [ generic_map_aspect ] [ port_map_aspect ]; instantiated_unit::= [ component ]component_name |entity entity_name[ ( architecture_identifier ) ] |configuration configuration_name ...
entity BUF_TESTBENCH is end BUF_TESTBENCH; architecture STRUCT_BUF_TEST of BUF_TESTBENCH is signal TEST1, TEST2 : BIT := '1'; -- BUF_COMP component declaration: component BUF_COMP is generic (TIME_DELAY : TIME); port ( IN1 : in BIT; OUT1 : out BIT ); ...
VHDLbyHGB.copyEntity Set cursor within the entity declaration. Run the command. It copies the entity declaration VHDLbyHGB.pasteAsComponent Pastes the entity as a component declaration VHDLbyHGB.pasteAsInstance(entity) Pastes the entity as an entity-instantiation ...
单元间数据传递是通过在Entity中描述中所声明的端口进行,通信端口的信号类型、端口宽度以及端口方向要匹配 一个Architecture可包括Behavioral、Dataflow和Structure风格语句 子单元(Component)在使用之前要声明 1.8VHDL设计小结(Cont.) RS(255,223)码译码器Top框图 ...
entity rs_decoder_7_3_v9_rs_decoder_v9_0_12 is port ( aclk : in STD_LOGIC; aclken : in STD_LOGIC; aresetn : in STD_LOGIC; s_axis_input_tdata : in STD_LOGIC_VECTOR ( 7 downto 0 ); s_axis_input_tuser : in STD_LOGIC_VECTOR ( 0 to 0 ); s_axis_input_tvalid : in ...
-- File counter.vhd entity counter is end entity counter; architecture arc of counter is signal clk: bit; -- Type bit has two values: '0' and '1' signal c, nc: natural; -- Natural (non-negative) integers begin P1: process begin clk <= '0'; wait for 10 ns; -- Ten nano-seco...