operations_4.v

写给小白们的FPGA入门设计实验

/*-------------------------------------------------------------------------
CONFIDENTIAL IN CONFIDENCE
This confidential and proprietary software may be only used as authorized
by a licensing agreement from CrazyBingo (Thereturnofbingo).
In the event of publication, the following notice is applicable:
Copyright (C) 2011-2012 CrazyBingo Corporation
The entire notice above must be reproduced on all authorized copies.
Author				:		CrazyBingo
Technology blogs 	: 		http://blog.chinaaet.com/crazybingo
							http://www.cnblogs.com/crazybingo
Eamil Address 		: 		[e-mail]
Filename			:		operations_4.v
Data				:		2012-10-20
Version				:		1.0
Description			:		This module is arithmetic of 4 operations.
Modification History	:
Data			By			Version			Change Description
===========================================================================
12/10/20		CrazyBingo	1.0				Original
--------------------------------------------------------------------------*/
`timescale 1 ns / 1 ns
module	operations_4
(
	input	clk,
	input	rst_n,
	
	input	[3:0]	x,
	input	[3:0]	y,
	
	output	[3:0]	sum,
	output			carry_out,

	output	[3:0]	sub,
	output			borrow_out
);

//------------------------
adder_4bits	u_adder_4bits
(
	.clk		(clk),
	.rst_n		(rst_n),
	
	.x			(x),
	.y			(y),

	.sum		(sum),
	.carry_out	(carry_out)
);

//------------------------
subtractor_4bits	subtractor_4bits
(
	.clk		(clk),
	.rst_n		(rst_n),
	
	.x			(x),
	.y			(y),
	
	.sub		(sub),
	.borrow_out	(borrow_out)
);

endmodule