且题目也说明需要我们例化4次bcd_fadd来得到一个4-digit的BCD加法器(共16bit), 同样产生sum和cout。 本题还是在考察我们例化的语法。 module top_module( input [15:0] a, b, input cin, output cout, output [15:0] sum ); wire [3:0] cout_temp; //例化4次,注意前一次计算的cout为后一次计算的...
Here we explore the use of Negative control lines for detecting overflow logic of BCD adder which considerably reduces Quantum cost, delay and gate count which result in high speed BCD adder with optimized area which give way to lot of scope in the field of reversible computing in near future...
3.1.3.7 4-digit BCD adder(Bcdadd4) You are provided with a BCD (binary-coded decimal) one-digit adder named bcd_fadd that adds two BCD digits and carry-in, and produces a sum and carry-out. module bcd_fadd { input [3:0] a, input [3:0] b, input cin, output cout, output [3...
adder4 adder(sum,cout,a,b,cin); //调用测试对象 always#5 cin=~cin; //设定cin的取值 initial begin a=0;b=0;cin=0;for(i=1;i<16;i=i+1)#10 a=i; //设定a的取值 End initial begin for(j=1;j<16;j=j+1)#10 b=j; //设定b的取值 End initial//定义结果显示格式 begin $monitor(...
1、- Page 1- 王金明:Verilog HDL 程序设计教程 【例3.1】4 位全加器 module adder4(cout,sum,ina,inb,cin); output3:0 sum; output cout; input3:0 ina,inb; input cin; assign cout,sum=ina+inb+cin; endmodule 【例3.2】4 位计数器 module count4(out,reset,clk); output3:0 out; input ...
3-bit binary adder Adder Signed addition overflow 4-digit BCD adder Karnaugh Map to Circuit 3-variable 4-variable Circuits Combinational Logic Multiplexers 4.14*** Mux256to1v moduletop_module input [1023:0] in, input [7:0] sel, output [3:0] out ); assign out = in[sel*4+3 -...
verilog的15个经典设计实例
else code = 3'd0; endfunction assign dout = code(din); //函数调用 endmodule 【例9.9】七段数码管译码器 module decode47(a,b,c,d,e,f,g,D3,D2,D1,D0); output a,b,c,d,e,f,g; input D3,D2,D1,D0; //输入的4位BCD码 reg a,b,c,d,e,f,g; ...
43.You are provided with a BCD one-digit adder namedbcd_faddthat adds two BCD digits and carry-in, and produces a sum and carry-out. module bcd_fadd { input [3:0] a, input [3:0] b, input cin, output cout, output [3:0] sum ); ...
1 八位加法器的八位加法器的Verilog HDL源代码源代码 例例 八位加法器的八位加法器的 源代码源代码 准备实现的准备实现的 准备实现的准备实现的 逻辑功能逻辑功能: 逻辑功能逻辑功能 module adder8 (cout, sum, ina,inb, cin); 8 ∑∑ output[7:0] sum; ina ∑∑ 8 output cout; 8 sum inb input...