ScramblerTest.bsv
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上传日期:2014-09-22
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- //----------------------------------------------------------------------//
- // The MIT License
- //
- // Copyright (c) 2007 Alfred Man Cheuk Ng, mcn02@mit.edu
- //
- // 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.
- //----------------------------------------------------------------------//
- import Controls::*;
- import DataTypes::*;
- import FPComplex::*;
- import GetPut::*;
- import Interfaces::*;
- import Vector::*;
- import Scrambler::*;
- function t idFunc(t in);
- return in;
- endfunction
- (* synthesize *)
- module mkScramblerTest(Empty);
-
- // state elements
- Scrambler#(ScramblerCtrl#(12,7),ScramblerCtrl#(12,7),12,12) scrambler;
- scrambler <- mkScrambler(idFunc,idFunc,7'b1001000);
- Reg#(Bit#(12)) data <- mkReg(0);
- Reg#(Bit#(32)) cycle <- mkReg(0);
-
- rule putInput(True);
- let mesg = Mesg { control: ScramblerCtrl
- {bypass: 0,
- seed: (data[4:0] == 0) ? tagged Valid 127 : Invalid},
- data: data};
- scrambler.in.put(mesg);
- data <= data + 1;
- $display("input: data: %b",data);
- endrule
- rule getOutput(True);
- let mesg <- scrambler.out.get;
- $display("output: data: %b",mesg.data);
- endrule
-
- rule tick(True);
- cycle <= cycle + 1;
- if (cycle == 100000)
- $finish;
- $display("Cycle: %d",cycle);
- endrule
-
- endmodule