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[/] [sbd_sqrt_fp/] [tags/] [start/] [sbd_adsu.v] - Rev 4
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/**************************************************************************** sbd_adsu - ADSU Copyright (C) 2005 Samuel Brown sam.brown@sbdesign.org This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA ****************************************************************************/ module sbd_adsu(A,B,ADD,C_IN,C_OUT,S); parameter bitlength=8; input [bitlength-1:0] A; input [bitlength-1:0] B; input ADD; input C_IN; output wire C_OUT; output wire [bitlength-1:0] S; wire [bitlength-1:0] Bx; wire [bitlength:0] tmp; assign Bx = B ^ {bitlength{~ADD}}; assign tmp = A + Bx + C_IN; assign S = tmp[bitlength-1:0]; assign C_OUT = tmp[bitlength]; endmodule