1 files changed, 29 insertions, 0 deletions
diff --git a/fpga/usrp2/udp/add_onescomp.v b/fpga/usrp2/udp/add_onescomp.v
new file mode 100644
index 000000000..e02604114
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+++ b/fpga/usrp2/udp/add_onescomp.v
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+//
+// Copyright 2011 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+
+
+module add_onescomp
+  #(parameter WIDTH = 16)
+   (input [WIDTH-1:0] A,
+    input [WIDTH-1:0] B,
+    output [WIDTH-1:0] SUM);
+
+   wire [WIDTH:0] SUM_INT = {1'b0,A} + {1'b0,B};
+   assign SUM  = SUM_INT[WIDTH-1:0] + {{WIDTH-1{1'b0}},SUM_INT[WIDTH]};
+   
+endmodule // add_onescomp