diff options
Diffstat (limited to 'lowlevel/generic/subtractor32_generic.v')
| -rw-r--r-- | lowlevel/generic/subtractor32_generic.v | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/lowlevel/generic/subtractor32_generic.v b/lowlevel/generic/subtractor32_generic.v deleted file mode 100644 index 5137ace..0000000 --- a/lowlevel/generic/subtractor32_generic.v +++ /dev/null @@ -1,67 +0,0 @@ -//------------------------------------------------------------------------------ -// -// subtractor32_generic.v -// ----------------------------------------------------------------------------- -// Generic 32-bit subtractor. -// -// Authors: Pavel Shatov -// -// Copyright (c) 2016, NORDUnet A/S -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are met: -// -// - Redistributions of source code must retain the above copyright notice, -// this list of conditions and the following disclaimer. -// -// - Redistributions in binary form must reproduce the above copyright notice, -// this list of conditions and the following disclaimer in the documentation -// and/or other materials provided with the distribution. -// -// - Neither the name of the NORDUnet nor the names of its contributors may be -// used to endorse or promote products derived from this software without -// specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE -// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -// POSSIBILITY OF SUCH DAMAGE. -// -//------------------------------------------------------------------------------ - -module subtractor32_generic - ( - input clk, - input [31: 0] a, - input [31: 0] b, - output [31: 0] d, - input b_in, - output b_out - ); - - // - // Difference - // - reg [32: 0] d_int; - - always @(posedge clk) - d_int <= {1'b0, a} - {1'b0, b} - {{32{1'b0}}, b_in}; - - // - // Output - // - assign d = d_int[31:0]; - assign b_out = d_int[32]; - -endmodule - -//------------------------------------------------------------------------------ -// End-of-File -//------------------------------------------------------------------------------ |