初始化VHDL中的记录数组 [英] Initializing an array of records in VHDL

问题描述

我有一条定义如下的记录

I have an record defined as follows

type ifx_t is
record
  data                        : std_logic_vector(127 downto 0);
  address                     : std_logic_vector (19 downto 0); 
  WrReq                       : std_logic;-- 
  RdReq                       : std_logic; --
end record;
type Array_ifx_t is array (0 to 2) of ifx_t;

我必须初始化该记录数组的实例，并且尝试了以下方法，但它不起作用

And I have to initialize an instance of this array of records and I have tried the following way and it doesn't work

signal pair_in       : Array_ifx_t:= (others =>((others =>'0'),(others=>'0'),'0','0')); 

请帮助.

推荐答案

如评论中所述，当使用ModelSim编译问题代码时，ModelSim可以正常工作.但是，对于Array_ifx_t中的元素使用类型化的值，其他工具可能会更严格.

As said in the comment, ModelSim work when compiling the code from question with ModelSim. However, other tools may be more strict about using a typed value for elements in Array_ifx_t.

对于类型化的分配和命名记录元素的使用，我认为这可以使getter概述并避免位置引用引起的错误，您可以使用以下方法进行初始化:

For a typed assign and use of named record elements, which I think gives getter overview and avoid mistakes by position references, you can make the initialization with:

constant IFX_T_0S : ifx_t := (data => (others =>'0'),
                              address => (others=>'0'),
                              WrReq => '0',
                              RdReq => '0');

signal pair_in : Array_ifx_t:= (others => IFX_T_0S);

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