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40 lines
1.4 KiB
Systemverilog
40 lines
1.4 KiB
Systemverilog
///////////////////////////////////////////
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// flopenrc.sv
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//
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// Written: David_Harris@hmc.edu 9 January 2021
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// Modified:
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//
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// Purpose: D flip-flop with enable, synchronous reset, enabled clear
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//
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// A component of the CORE-V-WALLY configurable RISC-V project.
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// https://github.com/openhwgroup/cvw
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//
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// Copyright (C) 2021-23 Harvey Mudd College & Oklahoma State University
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//
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// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
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//
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// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file
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// except in compliance with the License, or, at your option, the Apache License version 2.0. You
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// may obtain a copy of the License at
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//
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// https://solderpad.org/licenses/SHL-2.1/
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//
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// Unless required by applicable law or agreed to in writing, any work distributed under the
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// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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////////////////////////////////////////////////////////////////////////////////////////////////
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module flopenrc #(parameter WIDTH = 8) (
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input logic clk, reset, clear, en,
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input logic [WIDTH-1:0] d,
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output logic [WIDTH-1:0] q);
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always_ff @(posedge clk)
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if (reset) q <= 0;
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else if (en)
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if (clear) q <= 0;
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else q <= d;
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endmodule
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