题解 | #使用子模块实现三输入数的大小比较#
使用子模块实现三输入数的大小比较
https://www.nowcoder.com/practice/bfc9e2f37fe84c678f6fd04dbce0ad27
`timescale 1ns/1ns
module main_mod(
input clk,
input rst_n,
input [7:0]a,
input [7:0]b,
input [7:0]c,
output [7:0]d
);
wire [7:0] m,n;
compare compare1(
.clk(clk),
.rst_n(rst_n),
.data_a(a),
.data_b(b),
.data_c(m)
);
compare compare2(
.clk(clk),
.rst_n(rst_n),
.data_a(a),
.data_b(c),
.data_c(n)
);
compare compare3(
.clk(clk),
.rst_n(rst_n),
.data_a(m),
.data_b(n),
.data_c(d)
);
endmodule
module compare(
input clk,
input rst_n,
input [7:0] data_a,data_b,
output reg [7:0] data_c);
always @ (posedge clk or negedge rst_n )
if (!rst_n)
data_c <=0;
else if (data_a<data_b)
data_c <=data_a;
else
data_c <=data_b;
endmodule
