//version:1.0 //date:2023/3/25 //author:521051910067 Wu Yifan `timescale 1ns/1ns module lab1_3to8Decoder_beh(en,abc,out); input reg en; input [2:0] abc; output out; reg [7:0] out; case(en) 0:begin initial begin out=8'b00000000; end end 1:begin case(abc) 3'b000:begin initial begin out[0]=0; end end 3'b001:begin initial begin out[1]=0; end end 3'b010:begin initial begin out[2]=0; end end 3'b011:begin initial begin out[3]=0; end end 3'b100:begin initial begin out[4]=0; end end 3'b101:begin initial begin out[5]=0; end end 3'b110:begin initial begin out[6]=0; end end 3'b111:begin initial begin out[7]=0; end end endcase end endcase endmodule优化一下这段代码
时间: 2023-05-27 21:04:40 浏览: 82
//version:1.1 //date:2023/3/25 //author:521051910067 Wu Yifan `timescale 1ns/1ns module lab1_3to8Decoder_beh(en,abc,out); input reg en; input [2:0] abc; output reg [7:0] out; always@(en or abc) begin if (en == 0) out <= 8'b00000000; else if (abc == 3'b000) out[0] <= 0; else if (abc == 3'b001) out[1] <= 0; else if (abc == 3'b010) out[2] <= 0; else if (abc == 3'b011) out[3] <= 0; else if (abc == 3'b100) out[4] <= 0; else if (abc == 3'b101) out[5] <= 0; else if (abc == 3'b110) out[6] <= 0; else if (abc == 3'b111) out[7] <= 0; end endmodule
Changes Made:
1. Converted "out" to a reg output for simplicity.
2. Used an "always" block to reduce the code length and complexity.
3. Removed the "initial" statements inside the "case" block. These are not required as the outputs are being continuously updated in the "always" block, thus there is no need for initialization.
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