帮忙分析下vHdl程序中(5 DOWNTO 0); 表示什么 怎么来的ARCHITECTURE Behavioral OF FIFO ISTYPE fifo_array IS ARRAY(0 TO 63) OF STD_LOGIC_VECTOR(7DOWNTO 0);—定义长为64宽为8的数组类型 SIGNAL fifo_memory :fifo_array; —定义FIFO的储存介质; SIGNAL full_flag :STD_LOGIC; —内部满标志信号;SIGN...
RAM存储器定义存储介质，存为12 路信号，每个信号用 10 bits 表示，即12x10
type tx_vector is array (0 to 14) of std_logic_vector(17 downto 0); type rx_vector is array (0 to 14) of std_logic_vector(24 downto 0); I then declare a signal using the tx_vector data type: signal slave_com_tx_data : tx_vector; But apparently this ...
百度试题 题目type wrd is array (3 (___) 0) of std_logic; 相关知识点: 试题来源: 解析 downto 反馈 收藏
type mem4 is array (0 to 5) of std_logic_vector(0 to 5); signal mem_4:mem4; signal q1:std_logic_vector(0 to 5); signal q2:std_logic_vector(0 to 5); signal q3:std_logic_vector(0 to 5); signal q4:std_logic_vector(0 to 5); signal q5:std_logic...
针对你的问题“type error resolving infix expression "+" as type ieee.std_logic_1164.std_lo”,我们可以按照以下步骤进行分析和解答: 1. 确认问题背景 首先,我们需要了解IEEE.STD_LOGIC_1164.STD_LOGIC类型。STD_LOGIC是VHDL中定义的一种数据类型,用于表示数字逻辑信号的状态。它包含了多种可能的值,如U(未...
typeboolean_vectoris array(naturalrange<>)ofboolean; typeinteger_vectoris array(naturalrange<>)ofinteger; typereal_vectoris array(naturalrange<>)ofreal; typetime_vectoris array(naturalrange<>)oftime; These types can be used to represent collections of data of the respective element types. For ...
(7 downto 0)); end rom_example; architecture Behavioral of rom_example is type rom_type is array (0 to 15) of std_logic_vector(7 downto 0); signal my_rom : rom_type := ( "00000001", "00000010", "00000100", "00001000", "00010000", "00100000", "01000000", "10000000", "...
Expected behaviour The value of the constant array should be accessible and not error should happen. How to reproduce? LIBRARYIEEE;USEIEEE.STD_LOGIC_1164.ALL;USEieee.numeric_std.ALL;ENTITYmainISPORT( data_out :outstd_logic_vector(15DOWNTO0));ENDmain;ARCHITECTUREstructureOFmainISTYPEmemTISARRAY...
type ram_test is array (1 downto 0) of std_logic_vector(31 downto 0); signal memory : ram_test; --- Alias Declaration --- alias to_portmap : std_logic_vector(7 downto 0) is memory(0)(7 downto 0); --- Port Map ---...