////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// WISHBONE revB.2 compliant Computer Operating Properly - Test Bench
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// WISHBONE revB.2 compliant Computer Operating Properly - Test Bench
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//
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//
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// Author: Bob Hayes
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// Author: Bob Hayes
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// rehayes@opencores.org
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// rehayes@opencores.org
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//
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//
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// Downloaded from: http://www.opencores.org/projects/cop.....
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// Downloaded from: http://www.opencores.org/projects/cop.....
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// Copyright (c) 2009, Robert Hayes
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// Copyright (c) 2009, Robert Hayes
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//
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//
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// All rights reserved.
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// All rights reserved.
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//
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//
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// Redistribution and use in source and binary forms, with or without
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the <organization> nor the
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// * Neither the name of the <organization> nor the
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// names of its contributors may be used to endorse or promote products
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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// derived from this software without specific prior written permission.
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//
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//
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// THIS SOFTWARE IS PROVIDED BY Robert Hayes ''AS IS'' AND ANY
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// THIS SOFTWARE IS PROVIDED BY Robert Hayes ''AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL Robert Hayes BE LIABLE FOR ANY
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// DISCLAIMED. IN NO EVENT SHALL Robert Hayes BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// 45678901234567890123456789012345678901234567890123456789012345678901234567890
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// 45678901234567890123456789012345678901234567890123456789012345678901234567890
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`include "timescale.v"
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`include "timescale.v"
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module tst_bench_top();
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module tst_bench_top();
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//
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//
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// wires && regs
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// wires && regs
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//
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//
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reg mstr_test_clk;
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reg mstr_test_clk;
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reg [19:0] vector;
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reg [19:0] vector;
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reg [ 7:0] test_num;
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reg [ 7:0] test_num;
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reg [15:0] wb_temp;
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reg [15:0] wb_temp;
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reg rstn;
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reg rstn;
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reg sync_reset;
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reg sync_reset;
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reg por_reset_b;
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reg por_reset_b;
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reg startup_osc;
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reg startup_osc;
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reg stop_mode;
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reg stop_mode;
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reg wait_mode;
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reg wait_mode;
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reg debug_mode;
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reg debug_mode;
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reg scantestmode;
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reg scantestmode;
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reg [ 8:0] osc_div;
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reg [ 8:0] osc_div;
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wire [31:0] adr;
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wire [31:0] adr;
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wire [15:0] dat_i, dat_o, dat0_i, dat1_i, dat2_i, dat3_i;
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wire [15:0] dat_i, dat_o, dat0_i, dat1_i, dat2_i, dat3_i;
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wire we;
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wire we;
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wire stb;
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wire stb;
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wire cyc;
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wire cyc;
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wire ack, ack_1, ack_2, ack_3, ack_4;
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wire ack, ack_1, ack_2, ack_3, ack_4;
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wire inta_1, inta_2, inta_3, inta_4;
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wire inta_1, inta_2, inta_3, inta_4;
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wire count_en_1;
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wire count_en_1;
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wire count_flag_1;
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wire count_flag_1;
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reg [15:0] q, qq;
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reg [15:0] q, qq;
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reg en_osc_clk;
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reg en_osc_clk;
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wire osc_clk;
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wire osc_clk;
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wire scl, scl0_o, scl0_oen, scl1_o, scl1_oen;
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wire scl, scl0_o, scl0_oen, scl1_o, scl1_oen;
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wire sda, sda0_o, sda0_oen, sda1_o, sda1_oen;
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wire sda, sda0_o, sda0_oen, sda1_o, sda1_oen;
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// Name Address Locations
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// Name Address Locations
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parameter COP_CNTRL = 5'b0_0000;
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parameter COP_CNTRL = 5'b0_0000;
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parameter COP_TOUT = 5'b0_0001;
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parameter COP_TOUT = 5'b0_0001;
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parameter COP_COUNT = 5'b0_0010;
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parameter COP_COUNT = 5'b0_0010;
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parameter RD = 1'b1;
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parameter RD = 1'b1;
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parameter WR = 1'b0;
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parameter WR = 1'b0;
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parameter SADR = 7'b0010_000;
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parameter SADR = 7'b0010_000;
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parameter COP_CNTRL_COP_EVENT = 16'h0100; // COP Enable interrupt request
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parameter COP_CNTRL_COP_EVENT = 16'h0100; // COP Enable interrupt request
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parameter COP_CNTRL_IRQ = 16'h00c0; // COP Enable interrupt request
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parameter COP_CNTRL_IRQ = 16'h00c0; // COP Enable interrupt request
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parameter COP_CNTRL_DEBUG_ENA = 16'h0020; // COP Enable in system debug mode
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parameter COP_CNTRL_DEBUG_ENA = 16'h0020; // COP Enable in system debug mode
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parameter COP_CNTRL_STOP_ENA = 16'h0010; // COP Enable in system stop mode
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parameter COP_CNTRL_STOP_ENA = 16'h0010; // COP Enable in system stop mode
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parameter COP_CNTRL_WAIT_ENA = 16'h0008; // COP Enable in system wait mode
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parameter COP_CNTRL_WAIT_ENA = 16'h0008; // COP Enable in system wait mode
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parameter COP_CNTRL_COP_ENA = 16'h0004; // COP Enable bit
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parameter COP_CNTRL_COP_ENA = 16'h0004; // COP Enable bit
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parameter COP_CNTRL_CWP = 16'h0002; // COP Write Protect
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parameter COP_CNTRL_CWP = 16'h0002; // COP Write Protect
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parameter COP_CNTRL_CLCK = 16'h0001; // COP Lock
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parameter COP_CNTRL_CLCK = 16'h0001; // COP Lock
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parameter COP_COUNT_SVRW0 = 16'h5555; // Default COP Service word 0
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parameter COP_COUNT_SVRW0 = 16'h5555; // Default COP Service word 0
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parameter COP_COUNT_SVRW1 = 16'haaaa; // Default COP Service word 1
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parameter COP_COUNT_SVRW1 = 16'haaaa; // Default COP Service word 1
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parameter SLAVE_0_CNTRL = 5'b0_1000;
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parameter SLAVE_0_CNTRL = 5'b0_1000;
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parameter SLAVE_0_MOD = 5'b0_1001;
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parameter SLAVE_0_MOD = 5'b0_1001;
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parameter SLAVE_0_COUNT = 5'b0_1010;
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parameter SLAVE_0_COUNT = 5'b0_1010;
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parameter SLAVE_1_CNTRL = 5'b1_0000;
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parameter SLAVE_1_CNTRL = 5'b1_0000;
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parameter SLAVE_1_MOD = 5'b1_0001;
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parameter SLAVE_1_MOD = 5'b1_0001;
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parameter SLAVE_1_COUNT = 5'b1_0010;
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parameter SLAVE_1_COUNT = 5'b1_0010;
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parameter COP_2_CNTRL_0 = 5'b1_1000;
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parameter COP_2_CNTRL_0 = 5'b1_1000;
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parameter COP_2_CNTRL_1 = 5'b1_1001;
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parameter COP_2_CNTRL_1 = 5'b1_1001;
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parameter COP_2_TOUT_0 = 5'b1_1010;
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parameter COP_2_TOUT_0 = 5'b1_1010;
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parameter COP_2_TOUT_1 = 5'b1_1011;
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parameter COP_2_TOUT_1 = 5'b1_1011;
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parameter COP_2_COUNT_0 = 5'b1_1100;
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parameter COP_2_COUNT_0 = 5'b1_1100;
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parameter COP_2_COUNT_1 = 5'b1_1101;
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parameter COP_2_COUNT_1 = 5'b1_1101;
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// initial values and testbench setup
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// initial values and testbench setup
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initial
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initial
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begin
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begin
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mstr_test_clk = 0;
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mstr_test_clk = 0;
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vector = 0;
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vector = 0;
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test_num = 0;
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test_num = 0;
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por_reset_b = 0;
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por_reset_b = 0;
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startup_osc = 0;
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startup_osc = 0;
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stop_mode = 0;
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stop_mode = 0;
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wait_mode = 0;
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wait_mode = 0;
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debug_mode = 0;
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debug_mode = 0;
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scantestmode = 0;
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scantestmode = 0;
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osc_div = 0;
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osc_div = 0;
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en_osc_clk = 1'b0;
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en_osc_clk = 1'b0;
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`ifdef WAVES
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`ifdef WAVES
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$shm_open("waves");
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$shm_open("waves");
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$shm_probe("AS",tst_bench_top,"AS");
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$shm_probe("AS",tst_bench_top,"AS");
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$display("\nINFO: Signal dump enabled ...\n\n");
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$display("\nINFO: Signal dump enabled ...\n\n");
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`endif
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`endif
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`ifdef WAVES_V
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`ifdef WAVES_V
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$dumpfile ("cop_wave_dump.lxt");
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$dumpfile ("cop_wave_dump.lxt");
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$dumpvars (0, tst_bench_top);
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$dumpvars (0, tst_bench_top);
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$dumpon;
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$dumpon;
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$display("\nINFO: VCD Signal dump enabled ...\n\n");
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$display("\nINFO: VCD Signal dump enabled ...\n\n");
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`endif
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`endif
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end
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end
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// generate clock
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// generate clock
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always #20 mstr_test_clk = ~mstr_test_clk;
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always #20 mstr_test_clk = ~mstr_test_clk;
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always @(posedge mstr_test_clk)
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always @(posedge mstr_test_clk)
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vector = vector + 1;
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vector = vector + 1;
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always @(mstr_test_clk)
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always @(mstr_test_clk)
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begin
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begin
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if (osc_div <= 7)
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if (osc_div <= 7)
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osc_div = osc_div + 1;
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osc_div = osc_div + 1;
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else
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else
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osc_div = 0;
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osc_div = 0;
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if (osc_div == 7)
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if (osc_div == 7)
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startup_osc = !startup_osc;
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startup_osc = !startup_osc;
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end
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end
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assign osc_clk = startup_osc && en_osc_clk;
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assign osc_clk = startup_osc && en_osc_clk;
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// hookup wishbone master model
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// hookup wishbone master model
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wb_master_model #(.dwidth(16), .awidth(32))
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wb_master_model #(.dwidth(16), .awidth(32))
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u0 (
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u0 (
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.clk(mstr_test_clk),
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.clk(mstr_test_clk),
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.rst(rstn),
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.rst(rstn),
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.adr(adr),
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.adr(adr),
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.din(dat_i),
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.din(dat_i),
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.dout(dat_o),
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.dout(dat_o),
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.cyc(cyc),
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.cyc(cyc),
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.stb(stb),
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.stb(stb),
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.we(we),
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.we(we),
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.sel(),
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.sel(),
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.ack(ack),
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.ack(ack),
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.err(1'b0),
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.err(1'b0),
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.rty(1'b0)
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.rty(1'b0)
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);
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);
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// Address decoding for different COP module instances
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// Address decoding for different COP module instances
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wire stb0 = stb && ~adr[4] && ~adr[3];
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wire stb0 = stb && ~adr[4] && ~adr[3];
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wire stb1 = stb && ~adr[4] && adr[3];
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wire stb1 = stb && ~adr[4] && adr[3];
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wire stb2 = stb && adr[4] && ~adr[3];
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wire stb2 = stb && adr[4] && ~adr[3];
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wire stb3 = stb && adr[4] && adr[3];
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wire stb3 = stb && adr[4] && adr[3];
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// Create the Read Data Bus
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// Create the Read Data Bus
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assign dat_i = ({16{stb0}} & dat0_i) |
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assign dat_i = ({16{stb0}} & dat0_i) |
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({16{stb1}} & dat1_i) |
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({16{stb1}} & dat1_i) |
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({16{stb2}} & dat2_i) |
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({16{stb2}} & dat2_i) |
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({16{stb3}} & {8'b0, dat3_i[7:0]});
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({16{stb3}} & {8'b0, dat3_i[7:0]});
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assign ack = ack_1 || ack_2 || ack_3 || ack_4;
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assign ack = ack_1 || ack_2 || ack_3 || ack_4;
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// hookup wishbone_COP_master core - Parameters take all default values
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// hookup wishbone_COP_master core - Parameters take all default values
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// Async Reset, 16 bit Bus, 16 bit Granularity
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// Async Reset, 16 bit Bus, 16 bit Granularity
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cop_top #(.SINGLE_CYCLE(1'b0))
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cop_top #(.SINGLE_CYCLE(1'b0))
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cop_1(
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cop_1(
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// wishbone interface
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// wishbone interface
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.wb_clk_i(mstr_test_clk),
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.wb_clk_i(mstr_test_clk),
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.wb_rst_i(1'b0), // sync_reset
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.wb_rst_i(1'b0), // sync_reset
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.arst_i(rstn), // rstn
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.arst_i(rstn), // rstn
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.wb_adr_i(adr[2:0]),
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.wb_adr_i(adr[2:0]),
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.wb_dat_i(dat_o),
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.wb_dat_i(dat_o),
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.wb_dat_o(dat0_i),
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.wb_dat_o(dat0_i),
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.wb_we_i(we),
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.wb_we_i(we),
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.wb_stb_i(stb0),
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.wb_stb_i(stb0),
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.wb_cyc_i(cyc),
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.wb_cyc_i(cyc),
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.wb_sel_i( 2'b11 ),
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.wb_sel_i( 2'b11 ),
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.wb_ack_o(ack_1),
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.wb_ack_o(ack_1),
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.cop_rst_o(cop_1_out),
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.cop_rst_o(cop_1_out),
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.cop_irq_o(cop_1_irq),
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.cop_irq_o(cop_1_irq),
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.por_reset_i(por_reset_b),
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.por_reset_i(por_reset_b),
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.startup_osc_i(osc_clk),
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.startup_osc_i(osc_clk),
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.stop_mode_i(stop_mode),
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.stop_mode_i(stop_mode),
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.wait_mode_i(wait_mode),
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.wait_mode_i(wait_mode),
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.debug_mode_i(debug_mode),
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.debug_mode_i(debug_mode),
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.scantestmode(scantestmode)
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.scantestmode(scantestmode)
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);
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);
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// hookup wishbone_COP_slave core - Parameters take all default values
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// hookup wishbone_COP_slave core - Parameters take all default values
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// Sync Reset, 16 bit Bus, 16 bit Granularity
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// Sync Reset, 16 bit Bus, 16 bit Granularity
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cop_top #(.ARST_LVL(1'b1),
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cop_top #(.ARST_LVL(1'b1),
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.INIT_ENA(1'b1),
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.INIT_ENA(1'b1),
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.SERV_WD_0(16'haa55),
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.SERV_WD_0(16'haa55),
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.SERV_WD_1(16'hc396))
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.SERV_WD_1(16'hc396))
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cop_2(
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cop_2(
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// wishbone interface
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// wishbone interface
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.wb_clk_i(mstr_test_clk),
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.wb_clk_i(mstr_test_clk),
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.wb_rst_i(sync_reset),
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.wb_rst_i(sync_reset),
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.arst_i(1'b0),
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.arst_i(1'b0),
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.wb_adr_i(adr[2:0]),
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.wb_adr_i(adr[2:0]),
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.wb_dat_i(dat_o),
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.wb_dat_i(dat_o),
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.wb_dat_o(dat1_i),
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.wb_dat_o(dat1_i),
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.wb_we_i(we),
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.wb_we_i(we),
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.wb_stb_i(stb1),
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.wb_stb_i(stb1),
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.wb_cyc_i(cyc),
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.wb_cyc_i(cyc),
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.wb_sel_i( 2'b11 ),
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.wb_sel_i( 2'b11 ),
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.wb_ack_o(ack_2),
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.wb_ack_o(ack_2),
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|
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.cop_rst_o(cop_2_out),
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.cop_rst_o(cop_2_out),
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.cop_irq_o(cop_2_irq),
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.cop_irq_o(cop_2_irq),
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.por_reset_i(por_reset_b),
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.por_reset_i(por_reset_b),
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.startup_osc_i(osc_clk),
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.startup_osc_i(osc_clk),
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.stop_mode_i(stop_mode),
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.stop_mode_i(stop_mode),
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.wait_mode_i(wait_mode),
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.wait_mode_i(wait_mode),
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.debug_mode_i(debug_mode),
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.debug_mode_i(debug_mode),
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.scantestmode(scantestmode)
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.scantestmode(scantestmode)
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);
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);
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|
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assign dat2_i = 16'h0000;
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assign dat2_i = 16'h0000;
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assign ack_3 = 1'b0;
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assign ack_3 = 1'b0;
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|
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// hookup wishbone_COP_slave core
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// hookup wishbone_COP_slave core
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// 8 bit Bus, 8 bit Granularity
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// 8 bit Bus, 8 bit Granularity
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cop_top #(.DWIDTH(8))
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cop_top #(.DWIDTH(8))
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cop_4(
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cop_4(
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// wishbone interface
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// wishbone interface
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.wb_clk_i(mstr_test_clk),
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.wb_clk_i(mstr_test_clk),
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.wb_rst_i(sync_reset),
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.wb_rst_i(sync_reset),
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.arst_i(1'b1),
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.arst_i(1'b1),
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.wb_adr_i(adr[2:0]),
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.wb_adr_i(adr[2:0]),
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.wb_dat_i(dat_o[7:0]),
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.wb_dat_i(dat_o[7:0]),
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.wb_dat_o(dat3_i[7:0]),
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.wb_dat_o(dat3_i[7:0]),
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.wb_we_i(we),
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.wb_we_i(we),
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.wb_stb_i(stb3),
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.wb_stb_i(stb3),
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.wb_cyc_i(cyc),
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.wb_cyc_i(cyc),
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.wb_sel_i( 2'b11 ),
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.wb_sel_i( 2'b11 ),
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.wb_ack_o(ack_4),
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.wb_ack_o(ack_4),
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|
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.cop_rst_o(cop_4_out),
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.cop_rst_o(cop_4_out),
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.cop_irq_o(cop_4_irq),
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.cop_irq_o(cop_4_irq),
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.por_reset_i(por_reset_b),
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.por_reset_i(por_reset_b),
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.startup_osc_i(osc_clk),
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.startup_osc_i(osc_clk),
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.stop_mode_i(stop_mode),
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.stop_mode_i(stop_mode),
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.wait_mode_i(wait_mode),
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.wait_mode_i(wait_mode),
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.debug_mode_i(debug_mode),
|
.debug_mode_i(debug_mode),
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.scantestmode(scantestmode)
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.scantestmode(scantestmode)
|
);
|
);
|
|
|
// Test Program
|
// Test Program
|
initial
|
initial
|
begin
|
begin
|
$display("\nstatus: %t Testbench started", $time);
|
$display("\nstatus: %t Testbench started", $time);
|
|
|
// reset system
|
// reset system
|
rstn = 1'b1; // negate reset
|
rstn = 1'b1; // negate reset
|
repeat(1) @(posedge mstr_test_clk);
|
repeat(1) @(posedge mstr_test_clk);
|
sync_reset = 1'b1; // Make the sync reset 1 clock cycle long
|
sync_reset = 1'b1; // Make the sync reset 1 clock cycle long
|
#2; // move the async reset away from the clock edge
|
#2; // move the async reset away from the clock edge
|
rstn = 1'b0; // assert async reset
|
rstn = 1'b0; // assert async reset
|
#5; // Keep the async reset pulse with less than a clock cycle
|
#5; // Keep the async reset pulse with less than a clock cycle
|
rstn = 1'b1; // negate async reset
|
rstn = 1'b1; // negate async reset
|
por_reset_b = 1'b1;
|
por_reset_b = 1'b1;
|
repeat(1) @(posedge mstr_test_clk);
|
repeat(1) @(posedge mstr_test_clk);
|
sync_reset = 1'b0;
|
sync_reset = 1'b0;
|
|
|
$display("\nstatus: %t done reset", $time);
|
$display("\nstatus: %t done reset", $time);
|
test_num = test_num + 1;
|
test_num = test_num + 1;
|
|
|
repeat(2) @(posedge mstr_test_clk);
|
repeat(2) @(posedge mstr_test_clk);
|
|
|
//
|
//
|
// program core
|
// program core
|
//
|
//
|
|
|
reg_test_16;
|
reg_test_16;
|
|
|
reg_test_8;
|
reg_test_8;
|
|
|
cop_count_test;
|
cop_count_test;
|
|
|
cop_count_test_8;
|
cop_count_test_8;
|
|
|
$finish;
|
cop_irq_test;
|
|
|
u0.wb_write(1, SLAVE_0_CNTRL, COP_CNTRL_DEBUG_ENA); // Enable Slave Mode
|
|
|
|
// Set Master Mode PS=0, Modulo=16
|
|
test_num = test_num + 1;
|
|
$display("TEST #%d Starts at vector=%d, ms_test", test_num, vector);
|
|
|
|
u0.wb_write(1, COP_TOUT, 16'h0010); // load prescaler hi-byte
|
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); // Enable to start counting
|
|
$display("status: %t programmed registers", $time);
|
|
|
|
wait_flag_set; // Wait for Counter to tomeout
|
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_STOP_ENA | COP_CNTRL_COP_ENA); //
|
|
|
|
wait_flag_set; // Wait for Counter to tomeout
|
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_STOP_ENA | COP_CNTRL_COP_ENA); //
|
|
|
|
repeat(10) @(posedge mstr_test_clk);
|
repeat(10) @(posedge mstr_test_clk);
|
u0.wb_write(1, COP_CNTRL, 16'b0); //
|
|
|
|
repeat(10) @(posedge mstr_test_clk);
|
|
|
|
repeat(100) @(posedge mstr_test_clk);
|
|
$display("\nTestbench done at vector=%d\n", vector);
|
$display("\nTestbench done at vector=%d\n", vector);
|
$finish;
|
$finish;
|
end
|
end
|
|
|
// Poll for flag set
|
// Poll for flag set
|
task wait_flag_set;
|
task wait_flag_set;
|
begin
|
begin
|
u0.wb_read(1, COP_CNTRL, q);
|
u0.wb_read(1, COP_CNTRL, q);
|
while(~|(q & COP_CNTRL_STOP_ENA))
|
while(~|(q & COP_CNTRL_COP_EVENT))
|
u0.wb_read(1, COP_CNTRL, q); // poll it until it is set
|
u0.wb_read(1, COP_CNTRL, q); // poll it until it is set
|
$display("COP Flag set detected at vector =%d", vector);
|
$display("COP Flag set detected at vector =%d", vector);
|
end
|
end
|
endtask
|
endtask
|
|
|
// check register bits - reset, read/write
|
// check register bits - reset, read/write
|
task reg_test_16;
|
task reg_test_16;
|
begin
|
begin
|
test_num = test_num + 1;
|
test_num = test_num + 1;
|
$display("TEST #%d Starts at vector=%d, reg_test_16", test_num, vector);
|
$display("TEST #%d Starts at vector=%d, reg_test_16", test_num, vector);
|
u0.wb_cmp(0, COP_CNTRL, 16'h0004); // verify reset
|
u0.wb_cmp(0, COP_CNTRL, 16'h0004); // verify reset
|
u0.wb_cmp(0, COP_TOUT, 16'hffff); // verify reset
|
u0.wb_cmp(0, COP_TOUT, 16'hffff); // verify reset
|
u0.wb_cmp(0, COP_COUNT, 16'hffff); // verify reset
|
u0.wb_cmp(0, COP_COUNT, 16'hffff); // verify reset
|
|
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Clear COP_ENA
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Clear COP_ENA
|
u0.wb_cmp( 0, COP_CNTRL, 16'h0000); // verify clear
|
u0.wb_cmp( 0, COP_CNTRL, 16'h0000); // verify clear
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_WAIT_ENA); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_WAIT_ENA); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_WAIT_ENA); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_WAIT_ENA); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_STOP_ENA); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_STOP_ENA); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_STOP_ENA); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_STOP_ENA); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_DEBUG_ENA); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_DEBUG_ENA); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_DEBUG_ENA); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_DEBUG_ENA); //
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Clear all bits
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Clear all bits
|
|
|
u0.wb_write(1, COP_TOUT, 16'hc639); // Check TOUT reg
|
u0.wb_write(1, COP_TOUT, 16'hc639); // Check TOUT reg
|
u0.wb_cmp( 0, COP_TOUT, 16'hc639); // verify
|
u0.wb_cmp( 0, COP_TOUT, 16'hc639); // verify
|
u0.wb_write(1, COP_TOUT, 16'h39c6); // Check TOUT reg
|
u0.wb_write(1, COP_TOUT, 16'h39c6); // Check TOUT reg
|
u0.wb_cmp( 0, COP_TOUT, 16'h39c6); // verify
|
u0.wb_cmp( 0, COP_TOUT, 16'h39c6); // verify
|
|
|
// Verify that control bits can not be changed when COP_ENA is set
|
// Verify that control bits can not be changed when COP_ENA is set
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA | COP_CNTRL_COP_ENA);
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA | COP_CNTRL_COP_ENA);
|
$display("Debug 1");
|
$display("Debug 1");
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA); // verify that all bits are still clear
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA); // verify that all bits are still clear
|
$display("Debug 2");
|
$display("Debug 2");
|
|
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Clear COP_ENA
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Clear COP_ENA
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA);
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA);
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA | COP_CNTRL_COP_ENA); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA | COP_CNTRL_COP_ENA); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA | COP_CNTRL_COP_ENA);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA | COP_CNTRL_COP_ENA);
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA | COP_CNTRL_COP_ENA);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA | COP_CNTRL_COP_ENA);
|
u0.wb_write(1, COP_CNTRL, 16'h0000); //
|
u0.wb_write(1, COP_CNTRL, 16'h0000); //
|
u0.wb_cmp( 0, COP_CNTRL, 16'h0000);
|
u0.wb_cmp( 0, COP_CNTRL, 16'h0000);
|
|
|
// Verify TOUT bits are locked when COP_ENA is set
|
// Verify TOUT bits are locked when COP_ENA is set
|
u0.wb_write(1, COP_TOUT, 16'h5555); // Check TOUT reg
|
u0.wb_write(1, COP_TOUT, 16'h5555); // Check TOUT reg
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); // Lock TOUT reg
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); // Lock TOUT reg
|
u0.wb_write(1, COP_TOUT, 16'haaaa); // Try to overwrite with new bits
|
u0.wb_write(1, COP_TOUT, 16'haaaa); // Try to overwrite with new bits
|
u0.wb_cmp( 0, COP_TOUT, 16'h5555); // verify old bits are still there
|
u0.wb_cmp( 0, COP_TOUT, 16'h5555); // verify old bits are still there
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Enable writes to TOUT reg
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Enable writes to TOUT reg
|
u0.wb_write(1, COP_TOUT, 16'haaaa); // Write new bits
|
u0.wb_write(1, COP_TOUT, 16'haaaa); // Write new bits
|
u0.wb_cmp( 0, COP_TOUT, 16'haaaa); // verify new bits
|
u0.wb_cmp( 0, COP_TOUT, 16'haaaa); // verify new bits
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); // Lock TOUT reg
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); // Lock TOUT reg
|
u0.wb_write(1, COP_TOUT, 16'h5555); // Try to overwrite with new bits
|
u0.wb_write(1, COP_TOUT, 16'h5555); // Try to overwrite with new bits
|
u0.wb_cmp( 0, COP_TOUT, 16'haaaa); // verify old bits are still there
|
u0.wb_cmp( 0, COP_TOUT, 16'haaaa); // verify old bits are still there
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Enable writes to TOUT reg
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Enable writes to TOUT reg
|
|
|
// Verify COP_EN bit is locked when CWP is set
|
// Verify COP_EN bit is locked when CWP is set
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA | COP_CNTRL_CWP); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA | COP_CNTRL_CWP); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA | COP_CNTRL_CWP);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA | COP_CNTRL_CWP);
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_CWP); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_CWP); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA | COP_CNTRL_CWP);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA | COP_CNTRL_CWP);
|
u0.wb_write(1, COP_CNTRL, 16'h0000); //
|
u0.wb_write(1, COP_CNTRL, 16'h0000); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA);
|
u0.wb_write(1, COP_CNTRL, 16'h0000); //
|
u0.wb_write(1, COP_CNTRL, 16'h0000); //
|
u0.wb_cmp( 0, COP_CNTRL, 16'h0000);
|
u0.wb_cmp( 0, COP_CNTRL, 16'h0000);
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_CWP); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_CWP); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA | COP_CNTRL_CWP); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA | COP_CNTRL_CWP); //
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_CWP);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_CWP);
|
|
|
// Verify CWP bit is locked when CLCK is set
|
// Verify CWP bit is locked when CLCK is set
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_CLCK | COP_CNTRL_CWP); // COP Write Protect is ON
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_CLCK | COP_CNTRL_CWP); // COP Write Protect is ON
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_CLCK | COP_CNTRL_CWP);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_CLCK | COP_CNTRL_CWP);
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Try too clear both bits
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Try too clear both bits
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_CLCK | COP_CNTRL_CWP);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_CLCK | COP_CNTRL_CWP);
|
system_reset; // This is the only way to clear CLCK
|
system_reset; // This is the only way to clear CLCK
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_ENA);
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_CLCK); // COP Write Protect is OFF
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_CLCK); // COP Write Protect is OFF
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_CLCK);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_CLCK);
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA | COP_CNTRL_CWP | COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA);
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA | COP_CNTRL_CWP | COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_CLCK | COP_CNTRL_COP_ENA | COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA);
|
u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_CLCK | COP_CNTRL_COP_ENA | COP_CNTRL_WAIT_ENA | COP_CNTRL_STOP_ENA | COP_CNTRL_DEBUG_ENA);
|
|
|
|
|
$display("Debug 3");
|
$display("Debug 3");
|
u0.wb_read( 0, COP_COUNT, wb_temp);
|
u0.wb_read( 0, COP_COUNT, wb_temp);
|
u0.wb_write(0, COP_COUNT, 16'h0000);
|
u0.wb_write(0, COP_COUNT, 16'h0000);
|
u0.wb_cmp( 0, COP_COUNT, wb_temp); // verify register not writable
|
u0.wb_cmp( 0, COP_COUNT, wb_temp); // verify register not writable
|
u0.wb_write(0, COP_COUNT, 16'hffff);
|
u0.wb_write(0, COP_COUNT, 16'hffff);
|
u0.wb_cmp( 0, COP_COUNT, wb_temp); // verify register not writable
|
u0.wb_cmp( 0, COP_COUNT, wb_temp); // verify register not writable
|
|
|
system_reset; // This is the only way to clear CLCK
|
system_reset; // This is the only way to clear CLCK
|
|
|
end
|
end
|
endtask
|
endtask
|
|
|
task reg_test_8;
|
task reg_test_8;
|
begin
|
begin
|
test_num = test_num + 1;
|
test_num = test_num + 1;
|
$display("TEST #%d Starts at vector=%d, reg_test_8", test_num, vector);
|
$display("TEST #%d Starts at vector=%d, reg_test_8", test_num, vector);
|
u0.wb_cmp(0, COP_2_CNTRL_0, 16'h0004); // verify reset
|
u0.wb_cmp(0, COP_2_CNTRL_0, 16'h0004); // verify reset
|
u0.wb_cmp(0, COP_2_CNTRL_1, 16'h0000); // verify reset
|
u0.wb_cmp(0, COP_2_CNTRL_1, 16'h0000); // verify reset
|
u0.wb_cmp(0, COP_2_TOUT_0, 16'h00ff); // verify reset
|
u0.wb_cmp(0, COP_2_TOUT_0, 16'h00ff); // verify reset
|
u0.wb_cmp(0, COP_2_TOUT_1, 16'h00ff); // verify reset
|
u0.wb_cmp(0, COP_2_TOUT_1, 16'h00ff); // verify reset
|
u0.wb_cmp(0, COP_2_COUNT_0, 16'h00ff); // verify reset
|
u0.wb_cmp(0, COP_2_COUNT_0, 16'h00ff); // verify reset
|
u0.wb_cmp(0, COP_2_COUNT_1, 16'h00ff); // verify reset
|
u0.wb_cmp(0, COP_2_COUNT_1, 16'h00ff); // verify reset
|
|
|
u0.wb_write(0, COP_2_CNTRL_0, 16'h0000); // Remove write prtection
|
u0.wb_write(0, COP_2_CNTRL_0, 16'h0000); // Remove write prtection
|
u0.wb_write(0, COP_2_TOUT_0, 16'haa55);
|
u0.wb_write(0, COP_2_TOUT_0, 16'haa55);
|
u0.wb_cmp( 0, COP_2_TOUT_0, 16'h0055); // verify write
|
u0.wb_cmp( 0, COP_2_TOUT_0, 16'h0055); // verify write
|
u0.wb_cmp( 0, COP_2_TOUT_1, 16'h00ff); // verify hig byte unchanged
|
u0.wb_cmp( 0, COP_2_TOUT_1, 16'h00ff); // verify hig byte unchanged
|
u0.wb_write(0, COP_2_TOUT_1, 16'h66aa);
|
u0.wb_write(0, COP_2_TOUT_1, 16'h66aa);
|
u0.wb_cmp( 0, COP_2_TOUT_1, 16'h00aa); // verify write
|
u0.wb_cmp( 0, COP_2_TOUT_1, 16'h00aa); // verify write
|
u0.wb_cmp( 0, COP_2_TOUT_0, 16'h0055); // verify low byte unchanged
|
u0.wb_cmp( 0, COP_2_TOUT_0, 16'h0055); // verify low byte unchanged
|
|
|
end
|
end
|
endtask
|
endtask
|
|
|
task cop_count_test;
|
task cop_count_test;
|
begin
|
begin
|
test_num = test_num + 1;
|
test_num = test_num + 1;
|
$display("TEST #%d Starts at vector=%d, cop_count_test",
|
$display("TEST #%d Starts at vector=%d, cop_count_test",
|
test_num, vector);
|
test_num, vector);
|
// program internal registers
|
// program internal registers
|
u0.wb_cmp( 0, COP_COUNT, 16'hffff); // reset value
|
u0.wb_cmp( 0, COP_COUNT, 16'hffff); // reset value
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Turn off COP_ENA
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Turn off COP_ENA
|
u0.wb_write(1, COP_TOUT, 16'h5555); // Write TOUT reg
|
u0.wb_write(1, COP_TOUT, 16'h5555); // Write TOUT reg
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); //
|
u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); //
|
send_x_osc_clks(1);
|
send_x_osc_clks(1);
|
u0.wb_cmp( 0, COP_COUNT, 16'h5555); // verify counter initilized
|
u0.wb_cmp( 0, COP_COUNT, 16'h5555); // verify counter initilized
|
send_x_osc_clks(5);
|
send_x_osc_clks(5);
|
u0.wb_cmp( 0, COP_COUNT, 16'h5550); // verify counter has decremented
|
u0.wb_cmp( 0, COP_COUNT, 16'h5550); // verify counter has decremented
|
u0.wb_write(0, COP_COUNT, COP_COUNT_SVRW0); // Send the two Service words
|
u0.wb_write(0, COP_COUNT, COP_COUNT_SVRW0); // Send the two Service words
|
u0.wb_write(0, COP_COUNT, COP_COUNT_SVRW1);
|
u0.wb_write(0, COP_COUNT, COP_COUNT_SVRW1);
|
send_x_osc_clks(2);
|
send_x_osc_clks(2);
|
u0.wb_cmp( 0, COP_COUNT, 16'h5555); // verify counter initilized
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u0.wb_cmp( 0, COP_COUNT, 16'h5555); // verify counter initilized
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send_x_osc_clks(5);
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send_x_osc_clks(5);
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u0.wb_cmp( 0, COP_COUNT, 16'h5550); // verify counter has decremented
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u0.wb_cmp( 0, COP_COUNT, 16'h5550); // verify counter has decremented
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u0.wb_write(1, COP_CNTRL, 16'h0000); // Turn off COP_ENA
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u0.wb_write(1, COP_CNTRL, 16'h0000); // Turn off COP_ENA
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u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); // Verify toggle of COP_ENA resets COP
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u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); // Verify toggle of COP_ENA resets COP
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send_x_osc_clks(2);
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send_x_osc_clks(2);
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u0.wb_cmp( 0, COP_COUNT, 16'h5555); // verify counter initilized
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u0.wb_cmp( 0, COP_COUNT, 16'h5555); // verify counter initilized
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|
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u0.wb_write(1, COP_CNTRL, 16'h0000); // Turn off COP_ENA
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u0.wb_write(1, COP_CNTRL, 16'h0000); // Turn off COP_ENA
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u0.wb_write(1, COP_TOUT, 16'h0005); // Write TOUT reg
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u0.wb_write(1, COP_TOUT, 16'h0005); // Write TOUT reg
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u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); //
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u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); //
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send_x_osc_clks(9); // Give enough clocks so counter rolls over
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send_x_osc_clks(9); // Give enough clocks so counter rolls over
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repeat(8) @(posedge mstr_test_clk);
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repeat(8) @(posedge mstr_test_clk);
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u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_EVENT | COP_CNTRL_COP_ENA); // verify Status bit set
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u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_EVENT | COP_CNTRL_COP_ENA); // verify Status bit set
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u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_EVENT | COP_CNTRL_COP_ENA); //
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u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_EVENT | COP_CNTRL_COP_ENA); //
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u0.wb_cmp( 1, COP_CNTRL, COP_CNTRL_COP_ENA); // verify Status bit cleared
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u0.wb_cmp( 1, COP_CNTRL, COP_CNTRL_COP_ENA); // verify Status bit cleared
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u0.wb_write(1, COP_CNTRL, 16'h0000); // Turn off COP_ENA
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u0.wb_write(1, COP_CNTRL, 16'h0000); // Turn off COP_ENA
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u0.wb_write(1, COP_TOUT, 16'h0005); // Write TOUT reg
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u0.wb_write(1, COP_TOUT, 16'h0005); // Write TOUT reg
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u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); //
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u0.wb_write(1, COP_CNTRL, COP_CNTRL_COP_ENA); //
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send_x_osc_clks(9); // Give enough clocks so counter rolls over
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send_x_osc_clks(9); // Give enough clocks so counter rolls over
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repeat(8) @(posedge mstr_test_clk);
|
repeat(8) @(posedge mstr_test_clk);
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u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_EVENT | COP_CNTRL_COP_ENA); // verify Status bit set
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u0.wb_cmp( 0, COP_CNTRL, COP_CNTRL_COP_EVENT | COP_CNTRL_COP_ENA); // verify Status bit set
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u0.wb_write(0, COP_COUNT, COP_COUNT_SVRW0); // Send the two Service words
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u0.wb_write(0, COP_COUNT, COP_COUNT_SVRW0); // Send the two Service words
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u0.wb_write(0, COP_COUNT, COP_COUNT_SVRW1);
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u0.wb_write(0, COP_COUNT, COP_COUNT_SVRW1);
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u0.wb_cmp( 1, COP_CNTRL, COP_CNTRL_COP_ENA); // verify Status bit cleared
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u0.wb_cmp( 1, COP_CNTRL, COP_CNTRL_COP_ENA); // verify Status bit cleared
|
|
|
end
|
end
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|
endtask
|
|
|
|
task cop_irq_test;
|
|
begin
|
|
test_num = test_num + 1;
|
|
$display("TEST #%d Starts at vector=%d, cop_irq_test",
|
|
test_num, vector);
|
|
// program internal registers
|
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Turn off COP_ENA
|
|
u0.wb_write(1, COP_TOUT, 16'h0014); // Write TOUT reg
|
|
// u0.wb_write(1, COP_CNTRL, COP_CNTRL_IRQ | COP_CNTRL_COP_ENA); //
|
|
u0.wb_write(1, COP_CNTRL, 16'h0040 | COP_CNTRL_COP_ENA); //
|
|
send_x_osc_clks(10);
|
|
|
|
u0.wb_write(1, COP_CNTRL, 16'h0000); // Turn off COP_ENA
|
|
u0.wb_write(1, COP_TOUT, 16'h0022); // Write TOUT reg
|
|
send_x_osc_clks(1);
|
|
// u0.wb_write(1, COP_CNTRL, COP_CNTRL_IRQ | COP_CNTRL_COP_ENA); //
|
|
u0.wb_write(1, COP_CNTRL, 16'h0080 | COP_CNTRL_COP_ENA); //
|
|
send_x_osc_clks(10);
|
|
end
|
endtask
|
endtask
|
|
|
task cop_count_test_8;
|
task cop_count_test_8;
|
begin
|
begin
|
test_num = test_num + 1;
|
test_num = test_num + 1;
|
$display("TEST #%d Starts at vector=%d, cop_count_test_8",
|
$display("TEST #%d Starts at vector=%d, cop_count_test_8",
|
test_num, vector);
|
test_num, vector);
|
// program internal registers
|
// program internal registers
|
u0.wb_write(0, COP_2_CNTRL_0, 16'h0000); // Remove write prtection
|
u0.wb_write(0, COP_2_CNTRL_0, 16'h0000); // Remove write prtection
|
|
|
u0.wb_write(0, COP_2_TOUT_0, 16'h0005); // Set timout value
|
u0.wb_write(0, COP_2_TOUT_0, 16'h0005); // Set timout value
|
u0.wb_write(0, COP_2_TOUT_1, 16'h0000);
|
u0.wb_write(0, COP_2_TOUT_1, 16'h0000);
|
u0.wb_write(0, COP_2_CNTRL_0, COP_CNTRL_COP_ENA); // Enable COP Watchdog Timer
|
u0.wb_write(0, COP_2_CNTRL_0, COP_CNTRL_COP_ENA); // Enable COP Watchdog Timer
|
|
|
send_x_osc_clks(9); // Give enough clocks so counter rolls over
|
send_x_osc_clks(9); // Give enough clocks so counter rolls over
|
|
|
u0.wb_cmp(0, COP_2_CNTRL_1, 16'h0001); // verify COP event bit set
|
u0.wb_cmp(0, COP_2_CNTRL_1, 16'h0001); // verify COP event bit set
|
|
|
u0.wb_write(0, COP_2_COUNT_0, 16'h0055); // write 8 bit service words
|
u0.wb_write(0, COP_2_COUNT_0, 16'h0055); // write 8 bit service words
|
u0.wb_write(0, COP_2_COUNT_0, 16'h00aa); // to clear event
|
u0.wb_write(0, COP_2_COUNT_0, 16'h00aa); // to clear event
|
send_x_osc_clks(2); // Give enough clocks so counter rolls over
|
send_x_osc_clks(2); // Give enough clocks so counter rolls over
|
u0.wb_cmp(0, COP_2_CNTRL_1, 16'h0000); // verify COP event bit set
|
u0.wb_cmp(0, COP_2_CNTRL_1, 16'h0000); // verify COP event bit set
|
end
|
end
|
endtask
|
endtask
|
|
|
task system_reset; // reset system
|
task system_reset; // reset system
|
begin
|
begin
|
repeat(1) @(posedge mstr_test_clk);
|
repeat(1) @(posedge mstr_test_clk);
|
sync_reset = 1'b1; // Make the sync reset 1 clock cycle long
|
sync_reset = 1'b1; // Make the sync reset 1 clock cycle long
|
#2; // move the async reset away from the clock edge
|
#2; // move the async reset away from the clock edge
|
rstn = 1'b0; // assert async reset
|
rstn = 1'b0; // assert async reset
|
#5; // Keep the async reset pulse with less than a clock cycle
|
#5; // Keep the async reset pulse with less than a clock cycle
|
rstn = 1'b1; // negate async reset
|
rstn = 1'b1; // negate async reset
|
repeat(1) @(posedge mstr_test_clk);
|
repeat(1) @(posedge mstr_test_clk);
|
sync_reset = 1'b0;
|
sync_reset = 1'b0;
|
|
|
$display("\nstatus: %t System Reset Task Done", $time);
|
$display("\nstatus: %t System Reset Task Done", $time);
|
test_num = test_num + 1;
|
test_num = test_num + 1;
|
|
|
repeat(2) @(posedge mstr_test_clk);
|
repeat(2) @(posedge mstr_test_clk);
|
end
|
end
|
endtask
|
endtask
|
|
|
|
|
task send_x_osc_clks;
|
task send_x_osc_clks;
|
input [ 7:0] x_val;
|
input [ 7:0] x_val;
|
begin
|
begin
|
$display("Sending %d osc_clks", x_val);
|
$display("Sending %d osc_clks", x_val);
|
|
|
@(negedge startup_osc);
|
@(negedge startup_osc);
|
#2; //
|
#2; //
|
en_osc_clk = 1'b1; //
|
en_osc_clk = 1'b1; //
|
repeat(x_val) @(posedge startup_osc);
|
repeat(x_val) @(posedge startup_osc);
|
@(negedge startup_osc);
|
@(negedge startup_osc);
|
#2; //
|
#2; //
|
en_osc_clk = 1'b0; //
|
en_osc_clk = 1'b0; //
|
repeat(1) @(posedge mstr_test_clk);
|
repeat(1) @(posedge mstr_test_clk);
|
end
|
end
|
endtask
|
endtask
|
|
|
|
|
endmodule // tst_bench_top
|
endmodule // tst_bench_top
|
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