From d78e31e9dfa23ad69b3cc90b7f0ae19cb92c3cba Mon Sep 17 00:00:00 2001 From: Ross Thompson Date: Wed, 14 Jul 2021 15:46:52 -0500 Subject: [PATCH] Forgot to include one hot decoder. --- wally-pipelined/src/generic/oneHotDecoder.sv | 39 ++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 wally-pipelined/src/generic/oneHotDecoder.sv diff --git a/wally-pipelined/src/generic/oneHotDecoder.sv b/wally-pipelined/src/generic/oneHotDecoder.sv new file mode 100644 index 00000000..08bd2e01 --- /dev/null +++ b/wally-pipelined/src/generic/oneHotDecoder.sv @@ -0,0 +1,39 @@ +/////////////////////////////////////////// +// oneHotDecoder.sv +// +// Written: ross1728@gmail.com July 09, 2021 +// Modified: +// +// Purpose: Bin to one hot decoder. Power of 2 only. +// +// A component of the Wally configurable RISC-V project. +// +// Copyright (C) 2021 Harvey Mudd College & Oklahoma State University +// +// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation +// files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, +// modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software +// is furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES +// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS +// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT +// OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +/////////////////////////////////////////// + +`include "wally-config.vh" + +module oneHotDecoder + #(parameter WIDTH = 2) + (input logic [WIDTH-1:0] bin, + output logic [2**WIDTH-1:0] decoded + ); + + always_comb begin + decoded = '0; + decoded[bin] = 1'b1; + end + +endmodule