能否在Doxygen 1.8.14的VHDL描述中使用\code命令？

Yes, you can definitely use the \code command (including the language-specific variant like \code{.markdown}) when documenting VHDL code with Doxygen 1.8.14. Doxygen handles VHDL comment blocks (like --! for single-line or /*! ... */ for multi-line) similarly to C++ comments, so the same syntax you used in your C++ example should translate directly to VHDL.

Here's how your example would look in VHDL:

--=========================================================================== 
--! \defgroup markdown_vhdl VHDL markdown test 
--! \brief Test markdown rendering in VHDL docs
--! \date 2018 March 
--! 
--! \code{.markdown} 
--! ______ 
--! |     | 
--! x ->-|     |->- y 
--! |______| 
--! \endcode 
--=========================================================================== 
entity test is
  port (
    x : in  unsigned(3 downto 0);
    y : out unsigned(3 downto 0)
  );
end entity test;

architecture behavioral of test is
begin
  y <= x * 2;
end architecture behavioral;

When you run Doxygen 1.8.14 on this, it should generate the same ASCII diagram in the documentation as your C++ version. The {.markdown} tag tells Doxygen to parse the content inside the \code block as Markdown, which works regardless of whether you're documenting C++ or VHDL—you just need to make sure Doxygen is set up to process VHDL.

A quick check to ensure things work smoothly:

• In your Doxyfile, confirm VHDL_SUPPORT = YES is enabled (this is usually off by default, so you'll need to turn it on).
• If you wanted syntax highlighting for VHDL code snippets later, you'd use \code{.vhdl}, but for your markdown-style diagram, {.markdown} is exactly what you need.

内容的提问来源于stack exchange，提问作者Daniel J. Greenhoe