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
1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;SI...
architecture Behavioral of ttcaam is type mem0 is array(0 to 5) of std_logic_vector(0 to 5); signal mem:mem0; type mem1 is array (0 to 5) of std_logic_vector(0 to 5); signal mem_1:mem1; type mem2 is array (0 to 5) of std_logic_vector(0...
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 d...
The official VHDL “language” (without libraries) offers only a few data types – most VHDL designers rely on a “package” or collection of extensions which provides the std_logic/std_logic_vector type. Scalar types The first kind ofdata typesis called “Scalar types”. This means that th...
VHDL also provides predefined unconstrained types for arrays ofboolean,integer,real, andtimeelements, respectively. They are declared as: typeboolean_vectoris array(naturalrange<>)ofboolean; typeinteger_vectoris array(naturalrange<>)ofinteger;
data_out :outstd_logic_vector(15DOWNTO0));ENDmain;ARCHITECTUREstructureOFmainISTYPEmemTISARRAY(0to2)OFunsigned(15DOWNTO0);SIGNALmem : memT;CONSTANTmemC : memT:=(others=>(others=>'0'));BEGINdata_out<=std_logic_vector(mem(0));ENDstructure; ...
(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", "...
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
Write : std_logic; -- Write command end record; type Y_chan_t is record Ready : std_logic; end record; type X_chan_t_vector is array (natural range<>) of X_chan_t; type Y_chan_t_vector is array (natural range<>) of Y_chan_t; ...