module?SQE(
input?[2:0]?abc_in;
output?reg?[2:0]?abc_out;
always?@?*
begin
????if(abc_in>=3'b100)
????????abc_out?<=?3'b100;
????else?if(abc_in<=3'b001)
????????abc_out?<=?3'b001;
????????else
????????????abc_out?<=?3'b010;
end
endmodule
仿真波形自己画，没那个工具
