mirror of
https://github.com/fairwaves/UHD-Fairwaves.git
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115 lines
2.4 KiB
Verilog
115 lines
2.4 KiB
Verilog
//
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// Copyright 2011 Ettus Research LLC
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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module gpmc_model_sync
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(output reg EM_CLK, inout [15:0] EM_D, output reg [10:1] EM_A, output reg [1:0] EM_NBE,
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output reg EM_WAIT0, output reg EM_NCS4, output reg EM_NCS6,
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output reg EM_NWE, output reg EM_NOE );
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reg [15:0] EM_D_int;
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assign EM_D = EM_D_int;
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initial
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begin
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EM_CLK <= 0;
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EM_A <= 10'bz;
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EM_NBE <= 2'b11;
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EM_NWE <= 1;
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EM_NOE <= 1;
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EM_NCS4 <= 1;
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EM_NCS6 <= 1;
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EM_D_int <= 16'bz;
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EM_WAIT0 <= 0; // FIXME this is actually an input
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end
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task GPMC_Write;
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input ctrl;
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input [10:0] addr;
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input [15:0] data;
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begin
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EM_CLK <= 1;
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#10;
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EM_CLK <= 0;
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EM_NWE <= 0;
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if(ctrl)
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EM_NCS6 <= 0;
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else
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EM_NCS4 <= 0;
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EM_A <= addr[10:1];
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EM_D_int <= data;
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#10;
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EM_CLK <= 1;
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#10;
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EM_CLK <= 0;
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EM_NWE <= 1;
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EM_NCS4 <= 1;
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EM_NCS6 <= 1;
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EM_A <= 10'bz;
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EM_D_int <= 16'bz;
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#100;
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end
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endtask // GPMC_Write
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task GPMC_Read;
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input ctrl;
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input [10:0] addr;
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begin
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#1.3;
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EM_A <= addr[10:1];
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#3;
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if(ctrl)
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EM_NCS6 <= 0;
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else
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EM_NCS4 <= 0;
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#14;
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EM_NOE <= 0;
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#77.5;
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EM_NCS4 <= 1;
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EM_NCS6 <= 1;
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//#1.5;
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$display("Data Read from GPMC: %X",EM_D);
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EM_NOE <= 1;
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#254;
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EM_A <= 10'bz;
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end
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endtask // GPMC_Read
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initial
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begin
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#1000;
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GPMC_Write(1,36,16'hF00D);
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#1000;
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GPMC_Read(1,36);
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#1000;
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GPMC_Write(0,36,16'h1234);
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GPMC_Write(0,38,16'h5678);
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GPMC_Write(0,40,16'h9abc);
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GPMC_Write(0,11'h2F4,16'hF00D);
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GPMC_Write(0,11'h7FE,16'hDEAD);
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GPMC_Write(0,11'h7FE,16'hDEAD);
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GPMC_Write(0,11'h7FE,16'hDEAD);
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GPMC_Write(0,11'h7FE,16'hDEAD);
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GPMC_Write(0,11'h7FE,16'hDEAD);
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GPMC_Write(0,11'h7FE,16'hDEAD);
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#100000;
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$finish;
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end
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endmodule // gpmc_model
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