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			17 lines
		
	
	
	
		
			274 B
		
	
	
	
		
			Systemverilog
		
	
	
	
	
	
			
		
		
	
	
			17 lines
		
	
	
	
		
			274 B
		
	
	
	
		
			Systemverilog
		
	
	
	
	
	
module top (
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	input clk,
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	input [7:0] din
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);
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	reg [31:0] state = 0;
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	always @(posedge clk) begin
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		state <= ((state << 5) + state) ^ din;
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	end
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`ifdef FORMAL
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	always @(posedge clk) begin
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		cover (state == 'd 12345678);
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		cover (state == 'h 12345678);
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	end
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`endif
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endmodule
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