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
);
wire signed [8:0]data;
assign data=(select[0] == 0)?((select[1] == 0)? a:(a+b)):((select[1] == 0)?b:(a-b));
always@(posedge clk or negedge rst_n)begin
if(!rst_n)begin
c<=0;
end
else begin
c<=data;
end
end
endmodule
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