问题描述

在我的代码中，我有以下几行:

In my code, I have the following lines:

architecture Behavioral of L6 is

begin
with SEL select 
    Z <= '1111110' when '0000',
          '00110000' when '0001',
           '1111011' when '1001';

有一个语法错误near '"(第一行带单引号)，但这就是我使用的所有软件都会告诉我的.谁能给我更多帮助?

There's a syntax error "near ' " (the first line with a single quote), but that's all the software I'm using will tell me. Can anyone give me more help than that?

推荐答案

VHDL 对单个位文字使用单引号，例如 '1' 和 'Z'.

VHDL uses the single quote for single bit literals, like '1' and 'Z'.

对于位向量文字，使用双引号 "0000" 等

For bit vector literals, use double quotes "0000", etc.

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