feat: publish FreeRTOS C FC02 card

vendor/Hazard3/hdl/arith/hazard3_onehot_encode.v

@@ -0,0 +1,31 @@
+/*****************************************************************************\
+|                         Copyright (C) 2022 Luke Wren                        |
+|                     SPDX-License-Identifier: Apache-2.0                     |
+\*****************************************************************************/
+
+// req: one-hot bitmap
+// idx: index of the sole set bit in req
+
+`default_nettype none
+
+module hazard3_onehot_encode #(
+	parameter W_REQ = 16,
+	parameter W_GNT = $clog2(W_REQ) // do not modify
+) (
+	input  wire [W_REQ-1:0] req,
+	output reg  [W_GNT-1:0] gnt
+);
+
+always @ (*) begin: encode
+	reg [W_GNT:0] i;
+	gnt = {W_GNT{1'b0}};
+	for (i = 0; i < W_REQ; i = i + 1) begin
+		gnt = gnt | ({W_GNT{req[i[W_GNT-1:0]]}} & i[W_GNT-1:0]);
+	end
+end
+
+endmodule
+
+`ifndef YOSYS
+`default_nettype wire
+`endif