8-bit adder/subtractor module par_addsub(a,b,cin,sum,cout); input [7:0] a; input [7:0] b; input cin; output reg [7:0] sum; output reg cout; reg [8:0] c; integer i; always @ (a or b or cin) begin c=cin; if (cin == 0) begin for ( i=0; i.
Parallel in serial out Verilog Shift Register, odd behavior. Based on the data sheet for the 74LV165A 8 bit parallel in serial out. Verilog simulation: How can. Verilog code for converting serial data to parallel. The 8-bit serial data from rs232 port is converted to 8-bit parallel data. Paralel To Serial Converter - FPGAcenter. Parallel to Serial Converter. In this example we will design a Paralel to Serial Converter module. This module takes a 8 bit data as a input and send this data bit by bit as a output.
I am making a parallel to serial converter using ring counter in verilog. The ring counter is working fine but the Parallel to serial converter is not working properly and I am getting x undefined result. I am providing the code kindly help me finding the problem. TOP module PtoSTOP; reg clk,rst; wire [3:0] myout; wire out; Ring a(clk,rst,myout); parToser x(myout,clk,rst,out); initial begin clk=1; rst=1; #1 rst=0; end always #2 clk=~clk; endmodule Parallel TO Serial Converter module parToser(myout,clk,rst,out); input clk,rst; input [3:0] myout; output reg out; reg [2:0]i; always @(posedge clk or posedge rst) begin if(rst) begin out.
Serial To Parallel Converter Cable
Serial To Parallel Converter Chip
I think the main issue you are seeing is part of parToser. You have reg [2:0]i; which you increment and use to address input [3:0] myout; but i can hold values 0 to 7, half of which is outside the address range of [3:0] myout. You should be seeing a simulation error about out of range addressing. Also you have included a few flip-flops with a reset condition but not added the reset to the sensitivity list in 'parToser' & 'Ring': always @(posedge clk) Should be: always @(posedge clk or posedge rst) With out this trigger your out, i and myout variables will be x, as they have not been set to a known condition. NB: parToser i = i+1; should be i.