1 files changed, 34 insertions, 0 deletions
diff --git a/fpga/usrp3/lib/control/priority_encoder_one_hot.v b/fpga/usrp3/lib/control/priority_encoder_one_hot.v
new file mode 100644
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+++ b/fpga/usrp3/lib/control/priority_encoder_one_hot.v
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+//
+// Copyright 2013 Ettus Research LLC
+// Copyright 2018 Ettus Research, a National Instruments Company
+//
+// SPDX-License-Identifier: LGPL-3.0-or-later
+//
+
+module priority_encoder_one_hot
+#(
+  parameter WIDTH = 16
+)
+(
+  input  [WIDTH-1:0]        in,
+  output [WIDTH-1:0]        out
+);
+
+  wire [WIDTH-1:0] in_rev;
+  wire [WIDTH-1:0] in_rev_inv_po = ~in_rev + 1;
+
+  wire [WIDTH-1:0] mask;
+
+  generate
+  genvar i,j;
+
+  for (i=0; i<WIDTH; i=i+1)
+      assign in_rev[i] = in[WIDTH-1-i];
+
+  for (j=0; j<WIDTH; j=j+1)
+      assign mask[j]  = in_rev_inv_po[WIDTH-1-j];
+  endgenerate
+
+  assign out = in & mask;
+
+endmodule