题解 | #多功能数据处理器#
多功能数据处理器
https://www.nowcoder.com/practice/e009ab1a7a4c46fb9042c09c77ee27b8
`timescale 1ns/1ns
module data_select(
input clk,
input rst_n,
input signed[7:0]a,
input signed[7:0]b,
input [1:0]select,
output reg signed [8:0]c
);
always@(posedge clk or negedge rst_n)
if(rst_n <= 1'b0)
c <= 1'b0;
else
case(select)
0:c <= a;
1:c <= b;
2:c <= a+b;
3:c <= a-b;
default: c <= 1'b0;
endcase
endmodule
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