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			16 lines
		
	
	
	
		
			250 B
		
	
	
	
		
			Verilog
		
	
	
	
	
	
			
		
		
	
	
			16 lines
		
	
	
	
		
			250 B
		
	
	
	
		
			Verilog
		
	
	
	
	
	
| module top(input a, b, output o);
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| assign o = a & b;
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| endmodule
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| 
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| (* blackbox *)
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| module bb(input a, b, output o);
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| assign o = a | b;
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| specify
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| 	(a => o) = 1;
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| endspecify
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| endmodule
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| 
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| (* whitebox *)
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| module wb(input a, b, output o);
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| assign o = a ^ b;
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| endmodule
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