library IEEE; use IEEE.std_logic_1164.all; use IEEE.numeric_std.all; entity posnegcounter is generic( WIDTH_COUNT : natural := 8 ); port( Clk : in std_logic; Reset : in std_logic; Counter : out std_logic_vector(WIDTH_COUNT - 1 downto 0) ); end entity...
例如，在Verilog中使用for循环创建一个简单的计数器如下所示：```reg [3:0] counter;for (counter=4'b0000; counter<4'b1111; counter=counter+1) begin // code to be executed //...end end ```在上面的例子中，我们使用一个4位的寄存器作为计数器。在时钟上升沿触发的always块内，我们使用for循环从...
pucode[4]<=1'b1; end 1: begin pucode[4]<=pucode[4]^~incr; pucode[3]<=1'b1; end 2: begin pucode[3]<=pucode[3]^~incr; pucode[2]<=1'b1; end 3: begin pucode[2]<=pucode[2]^~incr; pucode[1]<=1'b1; end 4: begin pucode[1]<=pucode[1]^~incr; pucode[0]<=1...
A second Gray code counter style, the one described below, uses two sets of registers, one a binary counter and a second to capture a binary-to-Gray converted value. The intent of this Gray code counter style #2 is to utilize the binary carry structure, simplify the Gray-to-binary conve...
Here I will show two styles gray code counter. Style #1 First style gray code counter uses a single set of flip-flops as the Gray code register with accompanying Gray-tobinary conversion, binary increment, and binary-to-Gray conversion. ...
Hi, I am trying to read and write 8-bit Counter data Using Quartus and NIOS. In SOPC : I am assigning PIO : 1-bit input for enable PIO : 8-bit
rst_n)begincounter<=0;endelseif(counter==N/2-1)counter<=0;elsecounter<=counter+1;endalways@(posedgeclk_inornegedgerst_n)beginif(!rst_n)beginclk_out<=0;endelseif(counter==N/2-1)clk_out<=~clk_out;elseclk_out<=clk_out;endfunctionintegerclogb2(inputintegerdepth);beginfor(clogb2=0;...
Verilog RTL has been used for writing the code of counter. The functionality of counter has been tested by writing the testbench of counter and observing its output waveform. Synthesized circuit and gate level netlist is generated by the synthesis t...
//* following code is for 4 bit ripple counter designed with d flip flop*// module dff_r (input d_in, clk_in, rst_in, output reg q, output q_n); //* module define a d flip flop with clock, reset, d, as input, and q and qbar as output *// ...
来一个前面完成效果的 counter.v，代码太长了，放在后面附录。在 .v 文件里执行 Run Code，可以点右上角的小三角，可以右键菜单里运行，也可以快捷键 Ctrl + Alt + N。执行完成后在当前目录下会生成两个文件 run.vvp 和 run.vcd。右键 run.vcd 执行 Run Code。在弹出的 GTKWave 窗口中，展开 counter_tb...