Error (12002): Port "ain0" does not exist in macrofunction "Uuart_top" Error (12002): Port "ain1" does not exist in macrofunction "Uuart_top" Error (12002): Port "ain2" does not exist in macrofunction "Uuart_top"
时间: 2023-07-03 13:08:11 浏览: 289
这个错误提示是说在 "Uuart_top" 这个宏函数中,有三个端口 "ain0"、"ain1"、"ain2" 不存在。可能是在实例化宏函数时,没有正确地连接这些端口,或者是宏函数定义中缺少这些端口。
你可以检查一下代码中是否有实例化 "Uuart_top" 的地方,以及实例化时是否正确地连接了相应的端口。或者你也可以检查一下 "Uuart_top" 的定义,看看是否确实缺少这些端口的定义。
相关问题
给以下vhdl代码添加注释:library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; use ieee.std_logic_arith.all; entity adder_4bit is port ( ain1,bin1,cin1,ain2,bin2,ain3,bin3,ain4,bin4:in std_logic; so1,so2,so3,so4,co5:out std_logic ); end adder_4bit; architecture hav of adder_4bit is component adder_1bit port (bin: IN STD_LOGIC; cin: IN STD_LOGIC; ain: IN STD_LOGIC; so :OUT STD_LOGIC; co :OUT STD_LOGIC); end component; signal cin2,cin3,cin4,cin5:std_logic; begin u1:adder_1bit port map(ain=>ain1,bin=>bin1,cin=>cin1,co=>cin2,so=>so1); u2:adder_1bit port map(ain=>ain2,bin=>bin2,cin=>cin2,co=>cin3,so=>so2); u3:adder_1bit port map(ain=>ain3,bin=>bin3,cin=>cin3,co=>cin4,so=>so3); u4:adder_1bit port map(ain=>ain4,bin=>bin4,cin=>cin4,co=>cin5,so=>so4); end architecture;
-- This is a VHDL code for a 4-bit adder
-- The code defines an entity named "adder_4bit" with 9 input ports and 5 output ports
-- The entity uses 4 instances of a component named "adder_1bit" to perform the addition of 4-bit numbers
-- The component "adder_1bit" has 3 input ports and 2 output ports
-- The architecture "hav" instantiates the 4 components and maps their input and output ports
-- The signals cin2, cin3, cin4, and cin5 are used to carry the carry bits between the components
试分析1位二进制全加器顶层设计描述,将程序补充完整 LIBRARY IEEE; USE IEEE.STD_LOGIC_1164.ALL; ENTITY f_adder IS PORT (ain,bin,cin : IN STD_LOGIC; cout,sum : OUT STD_LOGIC ); END ENTITY f_adder; ARCHITECTURE fd1 OF f_adder IS COMPONENT h_adder PORT ( a,b : IN STD_LOGIC; co,so : OUT STD_LOGIC); END COMPONENT ; COMPONENT or2a PORT (a,b : IN STD_LOGIC; c : OUT STD_LOGIC); END COMPONENT; SIGNAL d,e,f : STD_LOGIC; BEGIN u1 : 1 PORT MAP(a=>ain,b=>bin,co=>d,so=>e); u2 : h_adder PORT MAP(a=>e, b=>cin, co=>f, 2 ); u3 : or2a 3 (a=>d, b=>f, c=>cout); END ARCHITECTURE fd1;
以下是1位二进制全加器顶层设计的完整代码:
```
LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
ENTITY f_adder IS
PORT (
ain, bin, cin : IN STD_LOGIC;
cout, sum : OUT STD_LOGIC
);
END ENTITY f_adder;
ARCHITECTURE fd1 OF f_adder IS
COMPONENT h_adder
PORT (
a, b : IN STD_LOGIC;
co, so : OUT STD_LOGIC
);
END COMPONENT;
COMPONENT or2a
PORT (
a, b : IN STD_LOGIC;
c : OUT STD_LOGIC
);
END COMPONENT;
SIGNAL d, e, f : STD_LOGIC;
BEGIN
u1 : h_adder PORT MAP(a => ain, b => bin, co => d, so => e);
u2 : h_adder PORT MAP(a => e, b => cin, co => f, so => sum);
u3 : or2a PORT MAP(a => d, b => f, c => cout);
END ARCHITECTURE fd1;
```
在这个代码中,顶层设计描述了一个1位二进制全加器,使用了两个以前定义好的组件:h_adder和or2a。其中,h_adder是一个1位二进制半加器,用于实现两个输入位的加法操作;or2a是一个2输入或门,用于实现进位和求和结果的输出。
顶层设计中包含了3个端口:ain、bin和cin是输入端口,分别表示被加数、加数和进位;cout和sum是输出端口,分别表示进位和求和结果。
具体实现过程是:首先,使用u1实例化h_adder组件,将ain和bin作为半加器的输入,将进位输出d和求和输出e连接到信号线上;然后,使用u2再次实例化h_adder组件,将e和cin作为半加器的输入,将进位输出f和求和输出sum连接到信号线上;最后,使用u3实例化or2a组件,将d和f作为或门的输入,将输出接到cout端口上。
这样,就完成了1位二进制全加器的设计。
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