三中取二VHDL语言编写
时间: 2023-07-07 13:44:28 浏览: 39
下面是三中取二的VHDL语言代码:
```
library ieee;
use ieee.std_logic_1164.all;
entity three_to_two is
port (
a, b, c: in std_logic;
y1, y2: out std_logic
);
end entity;
architecture behavioral of three_to_two is
begin
y1 <= (a and not b) or (a and not c) or (b and not c);
y2 <= (not a and b) or (not a and c) or (not b and c);
end architecture;
```
以上代码实现了三个输入信号a, b, c,以及两个输出信号y1, y2。y1的取值为a和b的逻辑与非c的逻辑与,或者a和c的逻辑与非b的逻辑与,或者b和c的逻辑与非a的逻辑与;y2的取值为a的非逻辑与b的逻辑与、a的非逻辑与c的逻辑与,或者b的非逻辑与c的逻辑与。
相关问题
能用vhdl语言编写吗
当然可以!以下是一个简单的 VHDL 代码示例,用于实现选手按键编码模块:
```vhdl
entity player_key_encoder is
port (
player_key: in std_logic_vector(9 downto 0); -- 选手按键输入
player_code: out std_logic_vector(9 downto 0) -- 选手编码输出
);
end entity player_key_encoder;
architecture Behavioral of player_key_encoder is
begin
process(player_key)
begin
case player_key is
when "0000000001" => player_code <= "0000000001"; -- 选手1
when "0000000010" => player_code <= "0000000010"; -- 选手2
when "0000000100" => player_code <= "0000000100"; -- 选手3
when "0000001000" => player_code <= "0000001000"; -- 选手4
when "0000010000" => player_code <= "0000010000"; -- 选手5
when "0000100000" => player_code <= "0000100000"; -- 选手6
when "0001000000" => player_code <= "0001000000"; -- 选手7
when "0010000000" => player_code <= "0010000000"; -- 选手8
when "0100000000" => player_code <= "0100000000"; -- 选手9
when "1000000000" => player_code <= "1000000000"; -- 选手10
when others => player_code <= "0000000000"; -- 无效输入
end case;
end process;
end architecture Behavioral;
```
这段代码实现了将10个选手的按键输入映射为10位二进制编码的功能。可以根据这个示例,依次实现其他模块的 VHDL 设计。
visual studio怎么编写VHDL语言
Visual Studio本身不支持VHDL语言的编写,需要使用VHDL插件来实现VHDL代码的编写。比较常用的插件有:
1. VHDL-Tool:一个免费的VHDL集成开发环境,支持代码高亮、自动补全、错误提示等功能。
2. ALDEC Active-HDL:一个商业化的VHDL开发环境,支持仿真、综合、调试等功能。
3. Xilinx Vivado Design Suite:一个商业化的FPGA设计开发套件,集成了VHDL编辑器、仿真器和综合器等功能。
使用这些插件,可以在Visual Studio中方便地编写和调试VHDL代码。但是,需要注意的是,这些插件都需要额外安装,并且需要对插件的使用进行学习和熟悉。
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