1 files changed, 38 insertions, 0 deletions
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+`timescale 1ns / 1ps
+//////////////////////////////////////////////////////////////////////////////////
+// Company: 
+// Engineer: 
+// 
+// Create Date:    15:30:47 02/15/2012 
+// Design Name: 
+// Module Name:    ALU 
+// Project Name: 
+// Target Devices: 
+// Tool versions: 
+// Description: 
+//
+// Dependencies: 
+//
+// Revision: 
+// Revision 0.01 - File Created
+// Additional Comments: 
+//
+//////////////////////////////////////////////////////////////////////////////////
+module ALU(
+	input [1:0] s,
+	input [3:0] a,
+	output [3:0] o
+    );
+
+reg [3:0] o;
+
+always @ ( * )
+begin 	 
+	case ( s )
+		2'd0 : o = a;
+		2'd1 : o = ~a+1;
+		2'd2 : o = a >> 1;
+		2'd3 : o = a % 3;
+	endcase
+end
+endmodule