feat: publish FreeRTOS C FC08 card

vendor/Hazard3/hdl/arith/hazard3_onehot_priority.v

@@ -0,0 +1,33 @@
+/*****************************************************************************\
+|                         Copyright (C) 2022 Luke Wren                        |
+|                     SPDX-License-Identifier: Apache-2.0                     |
+\*****************************************************************************/
+
+// req: bitmap
+// idx: bitmap with all bits clear except the least- (HIGHEST_WINS=0) or
+//      most- (HIGHEST_WINS=1) significant set bit in req.
+
+`default_nettype none
+
+module hazard3_onehot_priority #(
+	parameter W_REQ        = 16,
+	parameter HIGHEST_WINS = 0
+) (
+	input  wire [W_REQ-1:0] req,
+	output reg  [W_REQ-1:0] gnt
+);
+
+always @ (*) begin: select
+	integer i;
+	for (i = 0; i < W_REQ; i = i + 1) begin
+		gnt[i] = req[i] && ~|(req & (
+			HIGHEST_WINS ? ~({W_REQ{1'b1}} >> (W_REQ - 1 - i)) : ~({W_REQ{1'b1}} << i)
+		));
+	end
+end
+
+endmodule
+
+`ifndef YOSYS
+`default_nettype wire
+`endif