/*******************************************************************************
 * Module: x393_testbench01
 * Date:2015-02-06  
 * Author: andrey     
 * Description: testbench for the initial x393.v simulation
 *
 * Copyright (c) 2015 <set up in Preferences-Verilog/VHDL Editor-Templates> .
 * x393_testbench01.v is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 *  x393_testbench01.tf is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/> .
 *******************************************************************************/
`timescale 1ns/1ps
`define use200Mhz 1
`define DEBUG_FIFO 1
`undef WAIT_MRS
`define SET_PER_PIN_DEALYS 1 // set individual (including per-DQ pin delays)
`define PS_PIO_WAIT_COMPLETE 0 // wait until PS PIO module finished transaction before starting a new one
// Disabled already passed test to speedup simulation
//`define TEST_WRITE_LEVELLING 1
//`define TEST_READ_PATTERN 1
//`define TEST_WRITE_BLOCK 1
//`define TEST_READ_BLOCK 1


`define TEST_SCANLINE_WRITE 1
`define TEST_SCANLINE_WRITE_WAIT 1 // wait TEST_SCANLINE_WRITE finished (frame_done)
`define TEST_SCANLINE_READ  1
`define TEST_SCANLINE_READ_SHOW  1



module  x393_testbench01 #(
`include "includes/x393_parameters.vh"
`include "includes/x393_simulation_parameters.vh"
)(
);
`ifdef IVERILOG              
//    $display("IVERILOG is defined");
    `include "IVERILOG_INCLUDE.v"
`else
//    $display("IVERILOG is not defined");
    parameter lxtname = "x393.lxt";
`endif
`define DEBUG_WR_SINGLE 1  
`define DEBUG_RD_DATA 1  
`include "includes/x393_localparams.vh"
  // DDR3 signals
  wire        SDRST;
  wire        SDCLK;  // output
  wire        SDNCLK; // output
  wire [ADDRESS_NUMBER-1:0] SDA;    // output[14:0] 
  wire [ 2:0] SDBA;   // output[2:0] 
  wire        SDWE;   // output
  wire        SDRAS;  // output
  wire        SDCAS;  // output
  wire        SDCKE;  // output
  wire        SDODT;  // output
  wire [15:0] SDD;    // inout[15:0] 
  wire        SDDML;  // inout
  wire        DQSL;   // inout
  wire        NDQSL;  // inout
  wire        SDDMU;  // inout
  wire        DQSU;   // inout
  wire        NDQSU;  // inout
  wire        DUMMY_TO_KEEP;  // output to keep PS7 signals from "optimization"
//  wire        MEMCLK;
  
  // Simulation signals
  reg [11:0] ARID_IN_r;
  reg [31:0] ARADDR_IN_r;
  reg  [3:0] ARLEN_IN_r;
  reg  [2:0] ARSIZE_IN_r;
  reg  [1:0] ARBURST_IN_r;
  reg [11:0] AWID_IN_r;
  reg [31:0] AWADDR_IN_r;
  reg  [3:0] AWLEN_IN_r;
  reg  [2:0] AWSIZE_IN_r;
  reg  [1:0] AWBURST_IN_r;

  reg [11:0] WID_IN_r;
  reg [31:0] WDATA_IN_r;
  reg [ 3:0] WSTRB_IN_r;
  reg        WLAST_IN_r;
  
  reg [11:0] LAST_ARID; // last issued ARID

  // SuppressWarnings VEditor : assigned in $readmem() system task
  wire [SIMUL_AXI_READ_WIDTH-1:0] SIMUL_AXI_ADDR_W;
  // SuppressWarnings VEditor
  wire        SIMUL_AXI_MISMATCH;
  // SuppressWarnings VEditor
  reg  [31:0] SIMUL_AXI_READ;
  // SuppressWarnings VEditor
  reg  [SIMUL_AXI_READ_WIDTH-1:0] SIMUL_AXI_ADDR;
  // SuppressWarnings VEditor
  reg         SIMUL_AXI_FULL; // some data available
  wire        SIMUL_AXI_EMPTY= ~rvalid && rready && (rid==LAST_ARID); //SuppressThisWarning VEditor : may be unused, just for simulation // use it to wait for?
  reg  [31:0] registered_rdata; // here read data from tasks goes
  // SuppressWarnings VEditor
  reg         WAITING_STATUS;   // tasks are waiting for status

  reg        CLK;
  reg        RST;
  reg        AR_SET_CMD_r;
  wire       AR_READY;

  reg        AW_SET_CMD_r;
  wire       AW_READY;

  reg        W_SET_CMD_r;
  wire       W_READY;

  wire [11:0]  #(AXI_TASK_HOLD) ARID_IN = ARID_IN_r;
  wire [31:0]  #(AXI_TASK_HOLD) ARADDR_IN = ARADDR_IN_r;
  wire  [3:0]  #(AXI_TASK_HOLD) ARLEN_IN = ARLEN_IN_r;
  wire  [2:0]  #(AXI_TASK_HOLD) ARSIZE_IN = ARSIZE_IN_r;
  wire  [1:0]  #(AXI_TASK_HOLD) ARBURST_IN = ARBURST_IN_r;
  wire [11:0]  #(AXI_TASK_HOLD) AWID_IN = AWID_IN_r;
  wire [31:0]  #(AXI_TASK_HOLD) AWADDR_IN = AWADDR_IN_r;
  wire  [3:0]  #(AXI_TASK_HOLD) AWLEN_IN = AWLEN_IN_r;
  wire  [2:0]  #(AXI_TASK_HOLD) AWSIZE_IN = AWSIZE_IN_r;
  wire  [1:0]  #(AXI_TASK_HOLD) AWBURST_IN = AWBURST_IN_r;
  wire [11:0]  #(AXI_TASK_HOLD) WID_IN = WID_IN_r;
  wire [31:0]  #(AXI_TASK_HOLD) WDATA_IN = WDATA_IN_r;
  wire [ 3:0]  #(AXI_TASK_HOLD) WSTRB_IN = WSTRB_IN_r;
  wire         #(AXI_TASK_HOLD) WLAST_IN = WLAST_IN_r;
  wire         #(AXI_TASK_HOLD) AR_SET_CMD = AR_SET_CMD_r;
  wire         #(AXI_TASK_HOLD) AW_SET_CMD = AW_SET_CMD_r;
  wire         #(AXI_TASK_HOLD) W_SET_CMD =  W_SET_CMD_r;

  reg  [3:0] RD_LAG;  // ready signal lag in axi read channel (0 - RDY=1, 1..15 - RDY is asserted N cycles after valid)   
  reg  [3:0] B_LAG;   // ready signal lag in axi arete response channel (0 - RDY=1, 1..15 - RDY is asserted N cycles after valid)   

// Simulation modules interconnection
  wire [11:0] arid;
  wire [31:0] araddr;
  wire [3:0]  arlen;
  wire [2:0]  arsize;
  wire [1:0]  arburst;
  // SuppressWarnings VEditor : assigned in $readmem(14) system task
  wire [3:0]  arcache;
  // SuppressWarnings VEditor : assigned in $readmem() system task
  wire [2:0]  arprot;
  wire        arvalid;
  wire        arready;

  wire [11:0] awid;
  wire [31:0] awaddr;
  wire [3:0]  awlen;
  wire [2:0]  awsize;
  wire [1:0]  awburst;
  // SuppressWarnings VEditor : assigned in $readmem() system task
  wire [3:0]  awcache;
  // SuppressWarnings VEditor : assigned in $readmem() system task
  wire [2:0]  awprot;
  wire        awvalid;
  wire        awready;

  wire [11:0] wid;
  wire [31:0] wdata;
  wire [3:0]  wstrb;
  wire        wlast;
  wire        wvalid;
  wire        wready;
  
  wire [31:0] rdata;
  // SuppressWarnings VEditor : assigned in $readmem() system task
  wire [11:0] rid;
  wire        rlast;
  // SuppressWarnings VEditor : assigned in $readmem() system task
  wire  [1:0] rresp;
  wire        rvalid;
  wire        rready;
  wire        rstb=rvalid && rready;

  // SuppressWarnings VEditor : assigned in $readmem() system task
  wire  [1:0] bresp;
  // SuppressWarnings VEditor : assigned in $readmem() system task
  wire [11:0] bid;
  wire        bvalid;
  wire        bready;
  integer     NUM_WORDS_READ;
  integer     NUM_WORDS_EXPECTED;
//  integer     SCANLINE_CUR_X;
//  integer     SCANLINE_CUR_Y;
  wire AXI_RD_EMPTY=NUM_WORDS_READ==NUM_WORDS_EXPECTED; //SuppressThisWarning VEditor : may be unused, just for simulation
  
  localparam       FRAME_START_ADDRESS= 'h1000; // RA=80, CA=0, BA=0 22-bit frame start address (3 CA LSBs==0. BA==0)
  localparam       FRAME_FULL_WIDTH=    'h0c0;  // Padded line length (8-row increment), in 8-bursts (16 bytes)
//  localparam SCANLINE_WINDOW_WH=  `h079000a2;  // 2592*1936: low word - 13-bit window width (0->'h4000), high word - 16-bit frame height (0->'h10000)
//  localparam       SCANLINE_WINDOW_WH=  'h0009000b;  // 176*9: low word - 13-bit window width (0->'h4000), high word - 16-bit frame height (0->'h10000)
  localparam       SCANLINE_WINDOW_W=   'h005b; //'h000b;  // 176:  13-bit window width (0->'h4000)
  localparam       SCANLINE_WINDOW_H=   'h0009;  // 9:    16-bit frame height (0->'h10000)
//  localparam       SCANLINE_X0Y0=       'h00050003;  // X0=3*16=48, Y0=5: // low word - 13-bit window left, high word - 16-bit window top
  localparam       SCANLINE_X0=         'h005c; // 'h7c; // 'h0003;  // X0=3*16=48 - 13-bit window left
  localparam       SCANLINE_Y0=         'h0005;  // Y0=5: 16-bit window top
//  localparam       SCANLINE_STARTXY=    'h0;         // low word - 13-bit start X (relative to window), high word - 16-bit start y (normally 0)
  localparam       SCANLINE_STARTX=     'h0;         // 13-bit start X (relative to window), high word (normally 0)
  localparam       SCANLINE_STARTY=     'h0;         // 16-bit start y (normally 0)
  localparam [1:0] SCANLINE_EXTRA_PAGES= 0;          // 0..2 - number of pages in the buffer to keep/not write
  
  localparam       TEST01_START_FRAME=   1;         
  localparam       TEST01_NEXT_PAGE=     2;         
  localparam       TEST01_SUSPEND=       4;
  
  //NUM_XFER_BITS=6
  localparam       SCANLINE_PAGES_PER_ROW= (SCANLINE_WINDOW_W>>NUM_XFER_BITS)+((SCANLINE_WINDOW_W[NUM_XFER_BITS-1:0]==0)?0:1);
//  localparam  integer     SCANLINE_FULL_XFER= 1<<NUM_XFER_BITS; // 64 - full page transfer in 8-bursts
//  localparam  integer     SCANLINE_LAST_XFER= SCANLINE_WINDOW_W % (1<<NUM_XFER_BITS); // last page transfer size in a row
  
  integer ii;
  integer  SCANLINE_XFER_SIZE;
  localparam       TEST_INITIAL_BURST=   4; // 3;
always #(CLKIN_PERIOD/2) CLK <= ~CLK;
  initial begin
`ifdef IVERILOG              
    $display("IVERILOG is defined");
`else
    $display("IVERILOG is not defined");
`endif

`ifdef ICARUS              
    $display("ICARUS is defined");
`else
    $display("ICARUS is not defined");
`endif
    $dumpfile(lxtname);
  // SuppressWarnings VEditor : assigned in $readmem() system task
    $dumpvars(0,x393_testbench01);
    CLK =1'b0;
    RST = 1'bx;
    AR_SET_CMD_r = 1'b0;
    AW_SET_CMD_r = 1'b0;
    W_SET_CMD_r = 1'b0;
    #500;
//    $display ("x393_i.ddrc_sequencer_i.phy_cmd_i.phy_top_i.rst=%d",x393_i.ddrc_sequencer_i.phy_cmd_i.phy_top_i.rst);
    #500;
    RST = 1'b1;
    NUM_WORDS_EXPECTED =0;
//    #99000; // same as glbl
    #9000; // same as glbl
    repeat (20) @(posedge CLK) ;
    RST =1'b0;
//set simulation-only parameters   
    axi_set_b_lag(0); //(1);
    axi_set_rd_lag(0);
    program_status_all(DEFAULT_STATUS_MODE,'h2a); // mode auto with sequence number increment 

    enable_memcntrl(1);                 // enable memory controller

    set_up;
    wait_phase_shifter_ready;
    read_all_status;
// enable output for address/commands to DDR chip    
    enable_cmda(1);
    repeat (16) @(posedge CLK) ;
// remove reset from DDR chip    
    activate_sdrst(0); // was enabled at system reset

    #5000; // actually 500 usec required
    repeat (16) @(posedge CLK) ;
    enable_cke(1);
    repeat (16) @(posedge CLK) ;
    
//    enable_memcntrl(1);                 // enable memory controller
    enable_memcntrl_channels(16'h0003); // only channel 0 and 1 are enabled
    configure_channel_priority(0,0);    // lowest priority channel 0
    configure_channel_priority(1,0);    // lowest priority channel 1
    enable_reset_ps_pio(1,0);           // enable, no reset

// set MR registers in DDR3 memory, run DCI calibration (long)
    wait_ps_pio_ready(DEFAULT_STATUS_MODE); // wait FIFO not half full 
    schedule_ps_pio ( // shedule software-control memory operation (may need to check FIFO status first)
                        INITIALIZE_OFFSET, // input [9:0] seq_addr; // sequence start address
                        0,                 // input [1:0] page;     // buffer page number
                        0,                 // input       urgent;   // high priority request (only for competion with other channels, wiil not pass in this FIFO)
                        0,                // input       chn;      // channel buffer to use: 0 - memory read, 1 - memory write
                        `PS_PIO_WAIT_COMPLETE );//  wait_complete; // Do not request a newe transaction from the scheduler until previous memory transaction is finished
                        
   
`ifdef WAIT_MRS 
    wait_ps_pio_done(DEFAULT_STATUS_MODE);
`else    
    repeat (32) @(posedge CLK) ;  // what delay is needed to be sure? Add to PS_PIO?
//    first refreshes will be fast (accummulated while waiting)
`endif    
    enable_refresh(1);
    axi_set_dqs_odelay('h78); //??? dafaults - wrong?
    
`ifdef TEST_WRITE_LEVELLING    
// Set special values for DQS idelay for write leveling
        wait_ps_pio_done(DEFAULT_STATUS_MODE); // not no interrupt running cycle - delays are changed immediately
        axi_set_dqs_idelay_wlv;
// Set write buffer (from DDR3) WE signal delay for write leveling mode
        axi_set_wbuf_delay(WBUF_DLY_WLV);
        axi_set_dqs_odelay('h80); // 'h80 - inverted, 'h60 - not - 'h80 will cause warnings during simulation
        schedule_ps_pio ( // shedule software-control memory operation (may need to check FIFO status first)
                        WRITELEV_OFFSET,   // input [9:0] seq_addr; // sequence start address
                        0,                 // input [1:0] page;     // buffer page number
                        0,                 // input       urgent;   // high priority request (only for competion with other channels, wiil not pass in this FIFO)
                        0,                // input       chn;      // channel buffer to use: 0 - memory read, 1 - memory write
                        `PS_PIO_WAIT_COMPLETE );//  wait_complete; // Do not request a newe transaction from the scheduler until previous memory transaction is finished
                        
        wait_ps_pio_done(DEFAULT_STATUS_MODE); // wait previous memory transaction finished before changing delays (effective immediately)
        read_block_buf_chn (0, 0, 32, 1 ); // chn=0, page=0, number of 32-bit words=32, wait_done
//        @ (negedge rstb);
        axi_set_dqs_odelay(DLY_DQS_ODELAY);
        schedule_ps_pio ( // shedule software-control memory operation (may need to check FIFO status first)
                        WRITELEV_OFFSET,   // input [9:0] seq_addr; // sequence start address
                        1,                 // input [1:0] page;     // buffer page number
                        0,                 // input       urgent;   // high priority request (only for competion with other channels, wiil not pass in this FIFO)
                        0,                // input       chn;      // channel buffer to use: 0 - memory read, 1 - memory write
                        `PS_PIO_WAIT_COMPLETE );//  wait_complete; // Do not request a newe transaction from the scheduler until previous memory transaction is finished
        wait_ps_pio_done(DEFAULT_STATUS_MODE); // wait previous memory transaction finished before changing delays (effective immediately)
        read_block_buf_chn (0, 1, 32, 1 ); // chn=0, page=1, number of 32-bit words=32, wait_done
//    task wait_read_queue_empty; - alternative way to check fo empty read queue
        
//        @ (negedge rstb);
        axi_set_dqs_idelay_nominal;
//        axi_set_dqs_odelay_nominal;
        axi_set_dqs_odelay('h78);
        axi_set_wbuf_delay(WBUF_DLY_DFLT);
`endif
`ifdef TEST_READ_PATTERN
        schedule_ps_pio ( // shedule software-control memory operation (may need to check FIFO status first)
                        READ_PATTERN_OFFSET,   // input [9:0] seq_addr; // sequence start address
                        2,                     // input [1:0] page;     // buffer page number
                        0,                     // input       urgent;   // high priority request (only for competion with other channels, wiil not pass in this FIFO)
                        0,                    // input       chn;      // channel buffer to use: 0 - memory read, 1 - memory write
                        `PS_PIO_WAIT_COMPLETE );//  wait_complete; // Do not request a newe transaction from the scheduler until previous memory transaction is finished
        wait_ps_pio_done(DEFAULT_STATUS_MODE); // wait previous memory transaction finished before changing delays (effective immediately)
        read_block_buf_chn (0, 2, 32, 1 ); // chn=0, page=2, number of 32-bit words=32, wait_done
`endif
`ifdef TEST_WRITE_BLOCK
//    write_block_buf_chn; // fill block memory - already set in set_up task
        schedule_ps_pio ( // shedule software-control memory operation (may need to check FIFO status first)
                        WRITE_BLOCK_OFFSET,    // input [9:0] seq_addr; // sequence start address
                        0,                     // input [1:0] page;     // buffer page number
                        0,                     // input       urgent;   // high priority request (only for competion with other channels, wiil not pass in this FIFO)
                        1,                    // input       chn;      // channel buffer to use: 0 - memory read, 1 - memory write
                        `PS_PIO_WAIT_COMPLETE );//  wait_complete; // Do not request a newe transaction from the scheduler until previous memory transaction is finished
// tempoary - for debugging:
//        wait_ps_pio_done(DEFAULT_STATUS_MODE); // wait previous memory transaction finished before changing delays (effective immediately)

`endif
`ifdef TEST_READ_BLOCK
        schedule_ps_pio ( // shedule software-control memory operation (may need to check FIFO status first)
                        READ_BLOCK_OFFSET,   // input [9:0] seq_addr; // sequence start address
                        3,                     // input [1:0] page;     // buffer page number
                        0,                     // input       urgent;   // high priority request (only for competion with other channels, wiil not pass in this FIFO)
                        0,                    // input       chn;      // channel buffer to use: 0 - memory read, 1 - memory write
                        `PS_PIO_WAIT_COMPLETE );//  wait_complete; // Do not request a newe transaction from the scheduler until previous memory transaction is finished
        schedule_ps_pio ( // shedule software-control memory operation (may need to check FIFO status first)
                        READ_BLOCK_OFFSET,   // input [9:0] seq_addr; // sequence start address
                        2,                     // input [1:0] page;     // buffer page number
                        0,                     // input       urgent;   // high priority request (only for competion with other channels, wiil not pass in this FIFO)
                        0,                    // input       chn;      // channel buffer to use: 0 - memory read, 1 - memory write
                        `PS_PIO_WAIT_COMPLETE );//  wait_complete; // Do not request a newe transaction from the scheduler until previous memory transaction is finished
        schedule_ps_pio ( // shedule software-control memory operation (may need to check FIFO status first)
                        READ_BLOCK_OFFSET,   // input [9:0] seq_addr; // sequence start address
                        1,                     // input [1:0] page;     // buffer page number
                        0,                     // input       urgent;   // high priority request (only for competion with other channels, wiil not pass in this FIFO)
                        0,                    // input       chn;      // channel buffer to use: 0 - memory read, 1 - memory write
                        `PS_PIO_WAIT_COMPLETE );//  wait_complete; // Do not request a newe transaction from the scheduler until previous memory transaction is finished
        wait_ps_pio_done(DEFAULT_STATUS_MODE); // wait previous memory transaction finished before changing delays (effective immediately)
        read_block_buf_chn (0, 3, 256, 1 ); // chn=0, page=3, number of 32-bit words=256, wait_done
`endif
`ifdef TEST_SCANLINE_WRITE
    write_contol_register(MCNTRL_SCANLINE_CHN3_ADDR + MCNTRL_SCANLINE_STARTADDR,        FRAME_START_ADDRESS); // RA=80, CA=0, BA=0 22-bit frame start address (3 CA LSBs==0. BA==0) 
    write_contol_register(MCNTRL_SCANLINE_CHN3_ADDR + MCNTRL_SCANLINE_FRAME_FULL_WIDTH, FRAME_FULL_WIDTH);
    write_contol_register(MCNTRL_SCANLINE_CHN3_ADDR + MCNTRL_SCANLINE_WINDOW_WH,        SCANLINE_WINDOW_W + (SCANLINE_WINDOW_H<<16));
    write_contol_register(MCNTRL_SCANLINE_CHN3_ADDR + MCNTRL_SCANLINE_WINDOW_X0Y0,      SCANLINE_X0+ (SCANLINE_Y0<<16));
    write_contol_register(MCNTRL_SCANLINE_CHN3_ADDR + MCNTRL_SCANLINE_WINDOW_STARTXY,   SCANLINE_STARTX+(SCANLINE_STARTY<<16));
    write_contol_register(MCNTRL_SCANLINE_CHN3_ADDR + MCNTRL_SCANLINE_MODE,             {28'b0,SCANLINE_EXTRA_PAGES,2'b11});// set mode register: {extra_pages[1:0],enable,!reset}

    configure_channel_priority(3,0);    // lowest priority channel 3
    enable_memcntrl_channels(16'h000b); // channels 0,1,3 are enabled
//  localparam       TEST01_START_FRAME=   1;         
//  localparam       TEST01_NEXT_PAGE=     2;         
//  localparam       TEST01_SUSPEND=       4;         
 /*
   integer     SCANLINE_CUR_X;
  integer     SCANLINE_CUR_Y;
//SCANLINE_PAGES_PER_ROW
 */   
    write_contol_register(MCNTRL_TEST01_ADDR + MCNTRL_TEST01_CHN3_MODE,            TEST01_START_FRAME);
    for (ii=0;ii<TEST_INITIAL_BURST;ii=ii+1) begin
//        SCANLINE_CUR_X = SCANLINE_X0 + ((ii % SCANLINE_PAGES_PER_ROW) << NUM_XFER_BITS);
//        SCANLINE_CUR_Y = SCANLINE_Y0 + (ii / SCANLINE_PAGES_PER_ROW);
// VDT bugs: 1:does not propagate undefined width through ?:, 2: - does not allow to connect it to task integer input, 3: shows integer input width as 1  
        SCANLINE_XFER_SIZE= ((SCANLINE_PAGES_PER_ROW>1)?
                (
                    (
                        ((ii % SCANLINE_PAGES_PER_ROW) < (SCANLINE_PAGES_PER_ROW-1))?
                        
                        (1<<NUM_XFER_BITS):
                        (SCANLINE_WINDOW_W % (1<<NUM_XFER_BITS))
                    )
                ):
                (SCANLINE_WINDOW_W));
        write_block_scanline_chn(
            3,
            (ii & 3),
            SCANLINE_XFER_SIZE,
            SCANLINE_X0 + ((ii % SCANLINE_PAGES_PER_ROW)<<NUM_XFER_BITS),  // SCANLINE_CUR_X,
            SCANLINE_Y0 + (ii / SCANLINE_PAGES_PER_ROW)); // SCANLINE_CUR_Y);\
            
    end
/*
  localparam       SCANLINE_FULL_XFER= 1<<NUM_XFER_BITS; // 64 - full page transfer in 8-bursts
  localparam       SCANLINE_LAST_XFER= SCANLINE_WINDOW_W % (1<<NUM_XFER_BITS); // last page transfer size in a row

*/    
    for (ii=0;ii< (SCANLINE_WINDOW_H * SCANLINE_PAGES_PER_ROW) ;ii = ii+1) begin // here assuming 1 page per line
        if (ii >= TEST_INITIAL_BURST) begin // wait page ready and fill page after first 4 are filled
            wait_status_condition (
                MCNTRL_TEST01_STATUS_REG_CHN3_ADDR,
                MCNTRL_TEST01_ADDR + MCNTRL_TEST01_CHN3_STATUS_CNTRL,
                DEFAULT_STATUS_MODE,
                (ii-TEST_INITIAL_BURST)<<16, // 4-bit page number
                'hf << 16,  // mask for the 4-bit page number
                1); // not equal to
//            write_block_scanline_chn(3, (ii & 3), SCANLINE_WINDOW_W, SCANLINE_X0,SCANLINE_Y0+ii);
        SCANLINE_XFER_SIZE= ((SCANLINE_PAGES_PER_ROW>1)?
                (
                    (
                        ((ii % SCANLINE_PAGES_PER_ROW) < (SCANLINE_PAGES_PER_ROW-1))?
                        
                        (1<<NUM_XFER_BITS):
                        (SCANLINE_WINDOW_W % (1<<NUM_XFER_BITS))
                    )
                ):
                (SCANLINE_WINDOW_W));
        write_block_scanline_chn(
            3,
            (ii & 3),
            SCANLINE_XFER_SIZE,
            SCANLINE_X0 + ((ii % SCANLINE_PAGES_PER_ROW)<<NUM_XFER_BITS),  // SCANLINE_CUR_X,
            SCANLINE_Y0 + (ii / SCANLINE_PAGES_PER_ROW)); // SCANLINE_CUR_Y);
        end
        write_contol_register(MCNTRL_TEST01_ADDR + MCNTRL_TEST01_CHN3_MODE,            TEST01_NEXT_PAGE);
    end
    `ifdef TEST_SCANLINE_WRITE_WAIT // Does it work?
            wait_status_condition ( // may also be read directly from the same bit of mctrl_linear_rw (address=5) status
                MCNTRL_TEST01_STATUS_REG_CHN3_ADDR,
                MCNTRL_TEST01_ADDR + MCNTRL_TEST01_CHN3_STATUS_CNTRL,
                DEFAULT_STATUS_MODE,
                2 << STATUS_2LSB_SHFT, // bit 24 - busy, bit 25 - frame done
                2 << STATUS_2LSB_SHFT,  // mask for the 4-bit page number
                0); // equal to
    `endif
`endif
`ifdef TEST_SCANLINE_READ
   // program to the
    write_contol_register(MCNTRL_SCANLINE_CHN2_ADDR + MCNTRL_SCANLINE_STARTADDR,        FRAME_START_ADDRESS); // RA=80, CA=0, BA=0 22-bit frame start address (3 CA LSBs==0. BA==0) 
    write_contol_register(MCNTRL_SCANLINE_CHN2_ADDR + MCNTRL_SCANLINE_FRAME_FULL_WIDTH, FRAME_FULL_WIDTH);
    write_contol_register(MCNTRL_SCANLINE_CHN2_ADDR + MCNTRL_SCANLINE_WINDOW_WH,        SCANLINE_WINDOW_W + (SCANLINE_WINDOW_H<<16));
    write_contol_register(MCNTRL_SCANLINE_CHN2_ADDR + MCNTRL_SCANLINE_WINDOW_X0Y0,      SCANLINE_X0+ (SCANLINE_Y0<<16));
    write_contol_register(MCNTRL_SCANLINE_CHN2_ADDR + MCNTRL_SCANLINE_WINDOW_STARTXY,   SCANLINE_STARTX+(SCANLINE_STARTY<<16));
    write_contol_register(MCNTRL_SCANLINE_CHN2_ADDR + MCNTRL_SCANLINE_MODE,             {28'b0,SCANLINE_EXTRA_PAGES,2'b11});// set mode register: {extra_pages[1:0],enable,!reset}

    configure_channel_priority(2,0);    // lowest priority channel 2
    enable_memcntrl_channels(16'h000f); // channels 0,1,2,3 are enabled

    write_contol_register(MCNTRL_TEST01_ADDR + MCNTRL_TEST01_CHN2_MODE,            TEST01_START_FRAME);
    for (ii=0;ii<(SCANLINE_WINDOW_H * SCANLINE_PAGES_PER_ROW);ii = ii+1) begin
        SCANLINE_XFER_SIZE= ((SCANLINE_PAGES_PER_ROW>1)?
                (
                    (
                        ((ii % SCANLINE_PAGES_PER_ROW) < (SCANLINE_PAGES_PER_ROW-1))?
                        
                        (1<<NUM_XFER_BITS):
                        (SCANLINE_WINDOW_W % (1<<NUM_XFER_BITS))
                    )
                ):
                (SCANLINE_WINDOW_W));
    
            wait_status_condition (
                MCNTRL_TEST01_STATUS_REG_CHN2_ADDR,
                MCNTRL_TEST01_ADDR + MCNTRL_TEST01_CHN2_STATUS_CNTRL,
                DEFAULT_STATUS_MODE,
                (ii) << 16, // -TEST_INITIAL_BURST)<<16, // 4-bit page number
                'hf << 16,  // mask for the 4-bit page number
                1); // not equal to
// read block (if needed), for now just sikip   
        `ifdef TEST_SCANLINE_READ_SHOW
            read_block_buf_chn (
                2,
                (ii & 3),
                SCANLINE_XFER_SIZE <<2,
                1 ); // chn=0, page=3, number of 32-bit words=256, wait_done
        `endif             
        write_contol_register(MCNTRL_TEST01_ADDR + MCNTRL_TEST01_CHN2_MODE,            TEST01_NEXT_PAGE);
    end
`endif

  #20000;
  $finish;
end
// protect from never end
  initial begin
//  #10000000;
  #200000;
    $display("finish testbench 2");
  $finish;
  end



assign x393_i.ps7_i.FCLKCLK=        {4{CLK}};
assign x393_i.ps7_i.FCLKRESETN=     {RST,~RST,RST,~RST};
// Read address
assign x393_i.ps7_i.MAXIGP0ARADDR=  araddr;
assign x393_i.ps7_i.MAXIGP0ARVALID= arvalid;
assign arready=                            x393_i.ps7_i.MAXIGP0ARREADY;
assign x393_i.ps7_i.MAXIGP0ARID=    arid; 
assign x393_i.ps7_i.MAXIGP0ARLEN=   arlen;
assign x393_i.ps7_i.MAXIGP0ARSIZE=  arsize[1:0]; // arsize[2] is not used
assign x393_i.ps7_i.MAXIGP0ARBURST= arburst;
// Read data
assign rdata=                              x393_i.ps7_i.MAXIGP0RDATA; 
assign rvalid=                             x393_i.ps7_i.MAXIGP0RVALID;
assign x393_i.ps7_i.MAXIGP0RREADY=  rready;
assign rid=                                x393_i.ps7_i.MAXIGP0RID;
assign rlast=                              x393_i.ps7_i.MAXIGP0RLAST;
assign rresp=                              x393_i.ps7_i.MAXIGP0RRESP;
// Write address
assign x393_i.ps7_i.MAXIGP0AWADDR=  awaddr;
assign x393_i.ps7_i.MAXIGP0AWVALID= awvalid;

assign awready=                            x393_i.ps7_i.MAXIGP0AWREADY;

//assign awready= AWREADY_AAAA;
assign x393_i.ps7_i.MAXIGP0AWID=awid;

      // SuppressWarnings VEditor all
//  wire [ 1:0] AWLOCK;
      // SuppressWarnings VEditor all
//  wire [ 3:0] AWCACHE;
      // SuppressWarnings VEditor all
//  wire [ 2:0] AWPROT;
assign x393_i.ps7_i.MAXIGP0AWLEN=   awlen;
assign x393_i.ps7_i.MAXIGP0AWSIZE=  awsize[1:0]; // awsize[2] is not used
assign x393_i.ps7_i.MAXIGP0AWBURST= awburst;
      // SuppressWarnings VEditor all
//  wire [ 3:0] AWQOS;
// Write data
assign x393_i.ps7_i.MAXIGP0WDATA=   wdata;
assign x393_i.ps7_i.MAXIGP0WVALID=  wvalid;
assign wready=                             x393_i.ps7_i.MAXIGP0WREADY;
assign x393_i.ps7_i.MAXIGP0WID=     wid;
assign x393_i.ps7_i.MAXIGP0WLAST=   wlast;
assign x393_i.ps7_i.MAXIGP0WSTRB=   wstrb;
// Write responce
assign bvalid=                             x393_i.ps7_i.MAXIGP0BVALID;
assign x393_i.ps7_i.MAXIGP0BREADY=  bready;
assign bid=                                x393_i.ps7_i.MAXIGP0BID;
assign bresp=                              x393_i.ps7_i.MAXIGP0BRESP;
//TODO: See how to show problems in include files opened in the editor (test all top *.v files that have it)
// Top module under test
    x393 #(
        .MCONTR_WR_MASK                    (MCONTR_WR_MASK),
        .MCONTR_RD_MASK                    (MCONTR_RD_MASK),
        .MCONTR_CMD_WR_ADDR                (MCONTR_CMD_WR_ADDR),
        .MCONTR_BUF0_RD_ADDR               (MCONTR_BUF0_RD_ADDR),
        .MCONTR_BUF1_WR_ADDR               (MCONTR_BUF1_WR_ADDR),
        .MCONTR_BUF2_RD_ADDR               (MCONTR_BUF2_RD_ADDR),
        .MCONTR_BUF3_WR_ADDR               (MCONTR_BUF3_WR_ADDR),
        .MCONTR_BUF4_RD_ADDR               (MCONTR_BUF4_RD_ADDR),
        .DLY_LD                            (DLY_LD),
        .DLY_LD_MASK                       (DLY_LD_MASK),
        .MCONTR_PHY_0BIT_ADDR              (MCONTR_PHY_0BIT_ADDR),
        .MCONTR_PHY_0BIT_ADDR_MASK         (MCONTR_PHY_0BIT_ADDR_MASK),
        .MCONTR_PHY_0BIT_DLY_SET           (MCONTR_PHY_0BIT_DLY_SET),
        .MCONTR_PHY_0BIT_CMDA_EN           (MCONTR_PHY_0BIT_CMDA_EN),
        .MCONTR_PHY_0BIT_SDRST_ACT         (MCONTR_PHY_0BIT_SDRST_ACT),
        .MCONTR_PHY_0BIT_CKE_EN            (MCONTR_PHY_0BIT_CKE_EN),
        .MCONTR_PHY_0BIT_DCI_RST           (MCONTR_PHY_0BIT_DCI_RST),
        .MCONTR_PHY_0BIT_DLY_RST           (MCONTR_PHY_0BIT_DLY_RST),
        .MCONTR_TOP_0BIT_ADDR              (MCONTR_TOP_0BIT_ADDR),
        .MCONTR_TOP_0BIT_ADDR_MASK         (MCONTR_TOP_0BIT_ADDR_MASK),
        .MCONTR_TOP_0BIT_MCONTR_EN         (MCONTR_TOP_0BIT_MCONTR_EN),
        .MCONTR_TOP_0BIT_REFRESH_EN        (MCONTR_TOP_0BIT_REFRESH_EN),
        .MCONTR_PHY_16BIT_ADDR             (MCONTR_PHY_16BIT_ADDR),
        .MCONTR_PHY_16BIT_ADDR_MASK        (MCONTR_PHY_16BIT_ADDR_MASK),
        .MCONTR_PHY_16BIT_PATTERNS         (MCONTR_PHY_16BIT_PATTERNS),
        .MCONTR_PHY_16BIT_PATTERNS_TRI     (MCONTR_PHY_16BIT_PATTERNS_TRI),
        .MCONTR_PHY_16BIT_WBUF_DELAY       (MCONTR_PHY_16BIT_WBUF_DELAY),
        .MCONTR_PHY_16BIT_EXTRA            (MCONTR_PHY_16BIT_EXTRA),
        .MCONTR_PHY_STATUS_CNTRL           (MCONTR_PHY_STATUS_CNTRL),
        .MCONTR_ARBIT_ADDR                 (MCONTR_ARBIT_ADDR),
        .MCONTR_ARBIT_ADDR_MASK            (MCONTR_ARBIT_ADDR_MASK),
        .MCONTR_TOP_16BIT_ADDR             (MCONTR_TOP_16BIT_ADDR),
        .MCONTR_TOP_16BIT_ADDR_MASK        (MCONTR_TOP_16BIT_ADDR_MASK),
        .MCONTR_TOP_16BIT_CHN_EN           (MCONTR_TOP_16BIT_CHN_EN),
        .MCONTR_TOP_16BIT_REFRESH_PERIOD   (MCONTR_TOP_16BIT_REFRESH_PERIOD),
        .MCONTR_TOP_16BIT_REFRESH_ADDRESS  (MCONTR_TOP_16BIT_REFRESH_ADDRESS),
        .MCONTR_TOP_16BIT_STATUS_CNTRL     (MCONTR_TOP_16BIT_STATUS_CNTRL),
        .MCONTR_PHY_STATUS_REG_ADDR        (MCONTR_PHY_STATUS_REG_ADDR),
        .MCONTR_TOP_STATUS_REG_ADDR        (MCONTR_TOP_STATUS_REG_ADDR),
        .CHNBUF_READ_LATENCY               (CHNBUF_READ_LATENCY),
        .DFLT_DQS_PATTERN                  (DFLT_DQS_PATTERN),
        .DFLT_DQM_PATTERN                  (DFLT_DQM_PATTERN),
        .DFLT_DQ_TRI_ON_PATTERN            (DFLT_DQ_TRI_ON_PATTERN),
        .DFLT_DQ_TRI_OFF_PATTERN           (DFLT_DQ_TRI_OFF_PATTERN),
        .DFLT_DQS_TRI_ON_PATTERN           (DFLT_DQS_TRI_ON_PATTERN),
        .DFLT_DQS_TRI_OFF_PATTERN          (DFLT_DQS_TRI_OFF_PATTERN),
        .DFLT_WBUF_DELAY                   (DFLT_WBUF_DELAY),
        .DFLT_INV_CLK_DIV                  (DFLT_INV_CLK_DIV),
        .DFLT_CHN_EN                       (DFLT_CHN_EN),
        .DFLT_REFRESH_ADDR                 (DFLT_REFRESH_ADDR),
        .DFLT_REFRESH_PERIOD               (DFLT_REFRESH_PERIOD),
        .ADDRESS_NUMBER                    (ADDRESS_NUMBER),
        .COLADDR_NUMBER                    (COLADDR_NUMBER),
        .PHASE_WIDTH                       (PHASE_WIDTH),
        .SLEW_DQ                           (SLEW_DQ),
        .SLEW_DQS                          (SLEW_DQS),
        .SLEW_CMDA                         (SLEW_CMDA),
        .SLEW_CLK                          (SLEW_CLK),
        .IBUF_LOW_PWR                      (IBUF_LOW_PWR),
        .REFCLK_FREQUENCY                  (REFCLK_FREQUENCY),
        .HIGH_PERFORMANCE_MODE             (HIGH_PERFORMANCE_MODE),
        .CLKIN_PERIOD                      (CLKIN_PERIOD),
        .CLKFBOUT_MULT                     (CLKFBOUT_MULT),
        .CLKFBOUT_MULT_REF                 (CLKFBOUT_MULT_REF),
        .CLKFBOUT_DIV_REF                  (CLKFBOUT_DIV_REF),
        .DIVCLK_DIVIDE                     (DIVCLK_DIVIDE),
        .CLKFBOUT_PHASE                    (CLKFBOUT_PHASE),
        .SDCLK_PHASE                       (SDCLK_PHASE),
        .CLK_PHASE                         (CLK_PHASE),
        .CLK_DIV_PHASE                     (CLK_DIV_PHASE),
        .MCLK_PHASE                        (MCLK_PHASE),
        .REF_JITTER1                       (REF_JITTER1),
        .SS_EN                             (SS_EN),
        .SS_MODE                           (SS_MODE),
        .SS_MOD_PERIOD                     (SS_MOD_PERIOD),
        .CMD_PAUSE_BITS                    (CMD_PAUSE_BITS),
        .CMD_DONE_BIT                      (CMD_DONE_BIT),
        .STATUS_ADDR                       (STATUS_ADDR),
        .STATUS_ADDR_MASK                  (STATUS_ADDR_MASK),
        .STATUS_DEPTH                      (STATUS_DEPTH),
        .AXI_WR_ADDR_BITS                  (AXI_WR_ADDR_BITS),
        .AXI_RD_ADDR_BITS                  (AXI_RD_ADDR_BITS),
        .CONTROL_ADDR                      (CONTROL_ADDR),
        .CONTROL_ADDR_MASK                 (CONTROL_ADDR_MASK),
        .NUM_CYCLES_LOW_BIT                (NUM_CYCLES_LOW_BIT),
        .NUM_CYCLES_00                     (NUM_CYCLES_00),
        .NUM_CYCLES_01                     (NUM_CYCLES_01),
        .NUM_CYCLES_02                     (NUM_CYCLES_02),
        .NUM_CYCLES_03                     (NUM_CYCLES_03),
        .NUM_CYCLES_04                     (NUM_CYCLES_04),
        .NUM_CYCLES_05                     (NUM_CYCLES_05),
        .NUM_CYCLES_06                     (NUM_CYCLES_06),
        .NUM_CYCLES_07                     (NUM_CYCLES_07),
        .NUM_CYCLES_08                     (NUM_CYCLES_08),
        .NUM_CYCLES_09                     (NUM_CYCLES_09),
        .NUM_CYCLES_10                     (NUM_CYCLES_10),
        .NUM_CYCLES_11                     (NUM_CYCLES_11),
        .NUM_CYCLES_12                     (NUM_CYCLES_12),
        .NUM_CYCLES_13                     (NUM_CYCLES_13),
        .NUM_CYCLES_14                     (NUM_CYCLES_14),
        .NUM_CYCLES_15                     (NUM_CYCLES_15),
        .MCNTRL_PS_ADDR                    (MCNTRL_PS_ADDR),
        .MCNTRL_PS_MASK                    (MCNTRL_PS_MASK),
        .MCNTRL_PS_STATUS_REG_ADDR         (MCNTRL_PS_STATUS_REG_ADDR),
        .MCNTRL_PS_EN_RST                  (MCNTRL_PS_EN_RST),
        .MCNTRL_PS_CMD                     (MCNTRL_PS_CMD),
        .MCNTRL_PS_STATUS_CNTRL            (MCNTRL_PS_STATUS_CNTRL),
        .NUM_XFER_BITS                     (NUM_XFER_BITS),
        .FRAME_WIDTH_BITS                  (FRAME_WIDTH_BITS),
        .FRAME_HEIGHT_BITS                 (FRAME_HEIGHT_BITS),
        .MCNTRL_SCANLINE_CHN2_ADDR         (MCNTRL_SCANLINE_CHN2_ADDR),
        .MCNTRL_SCANLINE_CHN3_ADDR         (MCNTRL_SCANLINE_CHN3_ADDR),
        .MCNTRL_SCANLINE_MASK              (MCNTRL_SCANLINE_MASK),
        .MCNTRL_SCANLINE_MODE              (MCNTRL_SCANLINE_MODE),
        .MCNTRL_SCANLINE_STATUS_CNTRL      (MCNTRL_SCANLINE_STATUS_CNTRL),
        .MCNTRL_SCANLINE_STARTADDR         (MCNTRL_SCANLINE_STARTADDR),
        .MCNTRL_SCANLINE_FRAME_FULL_WIDTH  (MCNTRL_SCANLINE_FRAME_FULL_WIDTH),
        .MCNTRL_SCANLINE_WINDOW_WH         (MCNTRL_SCANLINE_WINDOW_WH),
        .MCNTRL_SCANLINE_WINDOW_X0Y0       (MCNTRL_SCANLINE_WINDOW_X0Y0),
        .MCNTRL_SCANLINE_WINDOW_STARTXY    (MCNTRL_SCANLINE_WINDOW_STARTXY),
        .MCNTRL_SCANLINE_STATUS_REG_CHN2_ADDR   (MCNTRL_SCANLINE_STATUS_REG_CHN2_ADDR),
        .MCNTRL_SCANLINE_STATUS_REG_CHN3_ADDR   (MCNTRL_SCANLINE_STATUS_REG_CHN3_ADDR),
        .MCNTRL_SCANLINE_PENDING_CNTR_BITS (MCNTRL_SCANLINE_PENDING_CNTR_BITS),
        .MAX_TILE_WIDTH                    (MAX_TILE_WIDTH),
        .MAX_TILE_HEIGHT                   (MAX_TILE_HEIGHT),
        .MCNTRL_TILED_CHN4_ADDR            (MCNTRL_TILED_CHN4_ADDR),
        .MCNTRL_TILED_MASK                 (MCNTRL_TILED_MASK),
        .MCNTRL_TILED_MODE                 (MCNTRL_TILED_MODE),
        .MCNTRL_TILED_STATUS_CNTRL         (MCNTRL_TILED_STATUS_CNTRL),
        .MCNTRL_TILED_STARTADDR            (MCNTRL_TILED_STARTADDR),
        .MCNTRL_TILED_FRAME_FULL_WIDTH     (MCNTRL_TILED_FRAME_FULL_WIDTH),
        .MCNTRL_TILED_WINDOW_WH            (MCNTRL_TILED_WINDOW_WH),
        .MCNTRL_TILED_WINDOW_X0Y0          (MCNTRL_TILED_WINDOW_X0Y0),
        .MCNTRL_TILED_WINDOW_STARTXY       (MCNTRL_TILED_WINDOW_STARTXY),
        .MCNTRL_TILED_TILE_WH              (MCNTRL_TILED_TILE_WH),
        .MCNTRL_TILED_STATUS_REG_CHN4_ADDR (MCNTRL_TILED_STATUS_REG_CHN4_ADDR),
        .MCNTRL_TILED_PENDING_CNTR_BITS    (MCNTRL_TILED_PENDING_CNTR_BITS),
        .MCNTRL_TILED_FRAME_PAGE_RESET     (MCNTRL_TILED_FRAME_PAGE_RESET),
        .BUFFER_DEPTH32                    (BUFFER_DEPTH32),
        .MCNTRL_TEST01_ADDR                 (MCNTRL_TEST01_ADDR),
        .MCNTRL_TEST01_MASK                 (MCNTRL_TEST01_MASK),
        .MCNTRL_TEST01_CHN2_MODE            (MCNTRL_TEST01_CHN2_MODE),
        .MCNTRL_TEST01_CHN2_STATUS_CNTRL    (MCNTRL_TEST01_CHN2_STATUS_CNTRL),
        .MCNTRL_TEST01_CHN3_MODE            (MCNTRL_TEST01_CHN3_MODE),
        .MCNTRL_TEST01_CHN3_STATUS_CNTRL    (MCNTRL_TEST01_CHN3_STATUS_CNTRL),
        .MCNTRL_TEST01_CHN4_MODE            (MCNTRL_TEST01_CHN4_MODE),
        .MCNTRL_TEST01_CHN4_STATUS_CNTRL    (MCNTRL_TEST01_CHN4_STATUS_CNTRL),
        .MCNTRL_TEST01_STATUS_REG_CHN2_ADDR (MCNTRL_TEST01_STATUS_REG_CHN2_ADDR),
        .MCNTRL_TEST01_STATUS_REG_CHN3_ADDR (MCNTRL_TEST01_STATUS_REG_CHN3_ADDR),
        .MCNTRL_TEST01_STATUS_REG_CHN4_ADDR (MCNTRL_TEST01_STATUS_REG_CHN4_ADDR)
    ) x393_i (
        .SDRST   (SDRST), // DDR3 reset (active low)
        .SDCLK   (SDCLK), // output 
        .SDNCLK  (SDNCLK), // outputread_and_wait(BASEADDR_STATUS)
        .SDA     (SDA[14:0]), // output[14:0] 
        .SDBA    (SDBA[2:0]), // output[2:0] 
        .SDWE    (SDWE), // output
        .SDRAS   (SDRAS), // output
        .SDCAS   (SDCAS), // output
        .SDCKE   (SDCKE), // output
        .SDODT   (SDODT), // output
        .SDD     (SDD[15:0]), // inout[15:0] 
        .SDDML   (SDDML), // inout
        .DQSL    (DQSL), // inout
        .NDQSL   (NDQSL), // inout
        .SDDMU   (SDDMU), // inout
        .DQSU    (DQSU), // inout
        .NDQSU   (NDQSU), // inout
        .DUMMY_TO_KEEP(DUMMY_TO_KEEP)  // to keep PS7 signals from "optimization"
//      ,.MEMCLK  (MEMCLK)
    );
// Micron DDR3 memory model
    /* Instance of Micron DDR3 memory model */
    ddr3 #(
        .TCK_MIN             (2500), 
        .TJIT_PER            (100),
        .TJIT_CC             (200),
        .TERR_2PER           (147),
        .TERR_3PER           (175),
        .TERR_4PER           (194),
        .TERR_5PER           (209),
        .TERR_6PER           (222),
        .TERR_7PER           (232),
        .TERR_8PER           (241),
        .TERR_9PER           (249),
        .TERR_10PER          (257),
        .TERR_11PER          (263),
        .TERR_12PER          (269),
        .TDS                 (125),
        .TDH                 (150),
        .TDQSQ               (200),
        .TDQSS               (0.25),
        .TDSS                (0.20),
        .TDSH                (0.20),
        .TDQSCK              (400),
        .TQSH                (0.38),
        .TQSL                (0.38),
        .TDIPW               (600),
        .TIPW                (900),
        .TIS                 (350),
        .TIH                 (275),
        .TRAS_MIN            (37500),
        .TRC                 (52500),
        .TRCD                (15000),
        .TRP                 (15000),
        .TXP                 (7500),
        .TCKE                (7500),
        .TAON                (400),
        .TWLS                (325),
        .TWLH                (325),
        .TWLO                (9000),
        .TAA_MIN             (15000),
        .CL_TIME             (15000),
        .TDQSCK_DLLDIS       (400),
        .TRRD                (10000),
        .TFAW                (40000),
        .CL_MIN              (5),
        .CL_MAX              (14),
        .AL_MIN              (0),
        .AL_MAX              (2),
        .WR_MIN              (5),
        .WR_MAX              (16),
        .BL_MIN              (4),
        .BL_MAX              (8),
        .CWL_MIN             (5),
        .CWL_MAX             (10),
        .TCK_MAX             (3300),
        .TCH_AVG_MIN         (0.47),
        .TCL_AVG_MIN         (0.47),
        .TCH_AVG_MAX         (0.53),
        .TCL_AVG_MAX         (0.53),
        .TCH_ABS_MIN         (0.43),
        .TCL_ABS_MIN         (0.43),
        .TCKE_TCK            (3),
        .TAA_MAX             (20000),
        .TQH                 (0.38),
        .TRPRE               (0.90),
        .TRPST               (0.30),
        .TDQSH               (0.45),
        .TDQSL               (0.45),
        .TWPRE               (0.90),
        .TWPST               (0.30),
        .TCCD                (4),
        .TCCD_DG             (2),
        .TRAS_MAX            (60e9),
        .TWR                 (15000),
        .TMRD                (4),
        .TMOD                (15000),
        .TMOD_TCK            (12),
        .TRRD_TCK            (4),
        .TRRD_DG             (3000),
        .TRRD_DG_TCK         (2),
        .TRTP                (7500),
        .TRTP_TCK            (4),
        .TWTR                (7500),
        .TWTR_DG             (3750),
        .TWTR_TCK            (4),
        .TWTR_DG_TCK         (2),
        .TDLLK               (512),
        .TRFC_MIN            (260000),
        .TRFC_MAX            (70200000),
        .TXP_TCK             (3),
        .TXPDLL              (24000),
        .TXPDLL_TCK          (10),
        .TACTPDEN            (1),
        .TPRPDEN             (1),
        .TREFPDEN            (1),
        .TCPDED              (1),
        .TPD_MAX             (70200000),
        .TXPR                (270000),
        .TXPR_TCK            (5),
        .TXS                 (270000),
        .TXS_TCK             (5),
        .TXSDLL              (512),
        .TISXR               (350),
        .TCKSRE              (10000),
        .TCKSRE_TCK          (5),
        .TCKSRX              (10000),
        .TCKSRX_TCK          (5),
        .TCKESR_TCK          (4),
        .TAOF                (0.7),
        .TAONPD              (8500),
        .TAOFPD              (8500),
        .ODTH4               (4),
        .ODTH8               (6),
        .TADC                (0.7),
        .TWLMRD              (40),
        .TWLDQSEN            (25),
        .TWLOE               (2000),
        .DM_BITS             (2),
        .ADDR_BITS           (15),
        .ROW_BITS            (15),
        .COL_BITS            (10),
        .DQ_BITS             (16),
        .DQS_BITS            (2),
        .BA_BITS             (3),
        .MEM_BITS            (10),
        .AP                  (10),
        .BC                  (12),
        .BL_BITS             (3),
        .BO_BITS             (2),
        .CS_BITS             (1),
        .RANKS               (1),
        .RZQ                 (240),
        .PRE_DEF_PAT         (8'hAA),
        .STOP_ON_ERROR       (1),
        .DEBUG               (1),
        .BUS_DELAY           (0),
        .RANDOM_OUT_DELAY    (0),
        .RANDOM_SEED         (31913),
        .RDQSEN_PRE          (2),
        .RDQSEN_PST          (1),
        .RDQS_PRE            (2),
        .RDQS_PST            (1),
        .RDQEN_PRE           (0),
        .RDQEN_PST           (0),
        .WDQS_PRE            (2),
        .WDQS_PST            (1),
        .check_strict_mrbits (1),
        .check_strict_timing (1),
        .feature_pasr        (1),
        .feature_truebl4     (0),
        .feature_odt_hi      (0),
        .PERTCKAVG           (512),
        .LOAD_MODE           (4'b0000),
        .REFRESH             (4'b0001),
        .PRECHARGE           (4'b0010),
        .ACTIVATE            (4'b0011),
        .WRITE               (4'b0100),
        .READ                (4'b0101),
        .ZQ                  (4'b0110),
        .NOP                 (4'b0111),
        .PWR_DOWN            (4'b1000),
        .SELF_REF            (4'b1001),
        .RFF_BITS            (128),
        .RFF_CHUNK           (32),
        .SAME_BANK           (2'd0),
        .DIFF_BANK           (2'd1),
        .DIFF_GROUP          (2'd2),
        .SIMUL_500US         (5),
        .SIMUL_200US         (2)
    ) ddr3_i (
        .rst_n   (SDRST),         // input 
        .ck      (SDCLK),         // input 
        .ck_n    (SDNCLK),        // input 
        .cke     (SDCKE),         // input 
        .cs_n    (1'b0),          // input 
        .ras_n   (SDRAS),         // input 
        .cas_n   (SDCAS),         // input 
        .we_n    (SDWE),          // input 
        .dm_tdqs ({SDDMU,SDDML}), // inout[1:0] 
        .ba      (SDBA[2:0]),     // input[2:0] 
        .addr    (SDA[14:0]),     // input[14:0] 
        .dq      (SDD[15:0]),     // inout[15:0] 
        .dqs     ({DQSU,DQSL}),   // inout[1:0] 
        .dqs_n   ({NDQSU,NDQSL}), // inout[1:0] 
        .tdqs_n  (),              // output[1:0] 
        .odt     (SDODT)          // input 
    );
    
    
// Simulation modules    
simul_axi_master_rdaddr
#(
  .ID_WIDTH(12),
  .ADDRESS_WIDTH(32),
  .LATENCY(AXI_RDADDR_LATENCY),          // minimal delay between inout and output ( 0 - next cycle)
  .DEPTH(8),            // maximal number of commands in FIFO
  .DATA_DELAY(3.5),
  .VALID_DELAY(4.0)
) simul_axi_master_rdaddr_i (
    .clk(CLK),
    .reset(RST),
    .arid_in(ARID_IN[11:0]),
    .araddr_in(ARADDR_IN[31:0]),
    .arlen_in(ARLEN_IN[3:0]),
    .arsize_in(ARSIZE_IN[2:0]),
    .arburst_in(ARBURST_IN[1:0]),
    .arcache_in(4'b0),
    .arprot_in(3'b0), //     .arprot_in(2'b0),
    .arid(arid[11:0]),
    .araddr(araddr[31:0]),
    .arlen(arlen[3:0]),
    .arsize(arsize[2:0]),
    .arburst(arburst[1:0]),
    .arcache(arcache[3:0]),
    .arprot(arprot[2:0]),
    .arvalid(arvalid),
    .arready(arready),
    .set_cmd(AR_SET_CMD),  // latch all other input data at posedge of clock
    .ready(AR_READY)     // command/data FIFO can accept command
);

simul_axi_master_wraddr
#(
  .ID_WIDTH(12),
  .ADDRESS_WIDTH(32),
  .LATENCY(AXI_WRADDR_LATENCY),          // minimal delay between inout and output ( 0 - next cycle)
  .DEPTH(8),            // maximal number of commands in FIFO
  .DATA_DELAY(3.5),
  .VALID_DELAY(4.0)
) simul_axi_master_wraddr_i (
    .clk(CLK),
    .reset(RST),
    .awid_in(AWID_IN[11:0]),
    .awaddr_in(AWADDR_IN[31:0]),
    .awlen_in(AWLEN_IN[3:0]),
    .awsize_in(AWSIZE_IN[2:0]),
    .awburst_in(AWBURST_IN[1:0]),
    .awcache_in(4'b0),
    .awprot_in(3'b0), //.awprot_in(2'b0),
    .awid(awid[11:0]),
    .awaddr(awaddr[31:0]),
    .awlen(awlen[3:0]),
    .awsize(awsize[2:0]),
    .awburst(awburst[1:0]),
    .awcache(awcache[3:0]),
    .awprot(awprot[2:0]),
    .awvalid(awvalid),
    .awready(awready),
    .set_cmd(AW_SET_CMD),  // latch all other input data at posedge of clock
    .ready(AW_READY)     // command/data FIFO can accept command
);

simul_axi_master_wdata
#(
  .ID_WIDTH(12),
  .DATA_WIDTH(32),
  .WSTB_WIDTH(4),
  .LATENCY(AXI_WRDATA_LATENCY),          // minimal delay between inout and output ( 0 - next cycle)
  .DEPTH(8),            // maximal number of commands in FIFO
  .DATA_DELAY(3.2),
  .VALID_DELAY(3.6)
) simul_axi_master_wdata_i (
    .clk(CLK),
    .reset(RST),
    .wid_in(WID_IN[11:0]),
    .wdata_in(WDATA_IN[31:0]),
    .wstrb_in(WSTRB_IN[3:0]),
    .wlast_in(WLAST_IN),
    .wid(wid[11:0]),
    .wdata(wdata[31:0]),
    .wstrb(wstrb[3:0]),
    .wlast(wlast),
    .wvalid(wvalid),
    .wready(wready),
    .set_cmd(W_SET_CMD),  // latch all other input data at posedge of clock
    .ready(W_READY)        // command/data FIFO can accept command
);

simul_axi_slow_ready simul_axi_slow_ready_read_i(
    .clk(CLK),
    .reset(RST), //input         reset,
    .delay(RD_LAG), //input  [3:0]  delay,
    .valid(rvalid), // input         valid,
    .ready(rready)  //output        ready
    );

simul_axi_slow_ready simul_axi_slow_ready_write_resp_i(
    .clk(CLK),
    .reset(RST), //input         reset,
    .delay(B_LAG), //input  [3:0]  delay,
    .valid(bvalid), // input       ADDRESS_NUMBER+2:0  valid,
    .ready(bready)  //output        ready
    );

simul_axi_read #(
    .ADDRESS_WIDTH(SIMUL_AXI_READ_WIDTH)
  ) simul_axi_read_i(
  .clk(CLK),
  .reset(RST),
  .last(rlast),
  .data_stb(rstb),
  .raddr(ARADDR_IN[SIMUL_AXI_READ_WIDTH+1:2]), 
  .rlen(ARLEN_IN),
  .rcmd(AR_SET_CMD),
  .addr_out(SIMUL_AXI_ADDR_W[SIMUL_AXI_READ_WIDTH-1:0]),
  .burst(),     // burst in progress - just debug
  .err_out());  // data last does not match predicted or FIFO over/under run - just debug
    
    //  wire [ 3:0] SIMUL_ADD_ADDR; 
    always @ (posedge CLK) begin
        if      (RST) SIMUL_AXI_FULL <=0;
        else if (rstb) SIMUL_AXI_FULL <=1;
        
        if (RST) begin
              NUM_WORDS_READ <= 0;
        end else if (rstb) begin
            NUM_WORDS_READ <= NUM_WORDS_READ + 1; 
        end    
        if (rstb) begin
            SIMUL_AXI_ADDR <= SIMUL_AXI_ADDR_W;
            SIMUL_AXI_READ <= rdata;
`ifdef DEBUG_RD_DATA
        $display (" Read data (addr:data): 0x%x:0x%x @%t",SIMUL_AXI_ADDR_W,rdata,$time);
`endif  
            
        end 
        
    end
    
    
// SuppressWarnings VEditor all - these variables are just for viewing, not used anywhere else
  reg DEBUG1, DEBUG2, DEBUG3;
  reg [11:0] GLOBAL_WRITE_ID=0;
  reg [11:0] GLOBAL_READ_ID=0;
  reg [7:0] target_phase=0; // to compare/wait for phase shifter ready
  
   task set_up;
        begin
// set dq /dqs tristate on/off patterns
            axi_set_tristate_patterns;
// set patterns for DM (always 0) and DQS - always the same (may try different for write lev.)
            axi_set_dqs_dqm_patterns;
// prepare all sequences
            set_all_sequences;
// prepare write buffer    
            write_block_buf_chn(1,0,256); // fill block memory (channel, page, number)
// set all delays
//#axi_set_delays - from tables, per-pin
`ifdef SET_PER_PIN_DEALYS
            axi_set_delays; // set all individual delays, aslo runs axi_set_phase()
`else
            axi_set_same_delays(DLY_DQ_IDELAY,DLY_DQ_ODELAY,DLY_DQS_IDELAY,DLY_DQS_ODELAY,DLY_DM_ODELAY,DLY_CMDA_ODELAY);
// set clock phase relative to DDR clk
            axi_set_phase(DLY_PHASE);
`endif            
            
        end
    endtask

task set_all_sequences;
        begin
            $display("SET MRS @ %t",$time);    
            set_mrs(1);
            $display("SET REFRESH @ %t",$time);    
            set_refresh(
                50, // input [ 9:0] t_rfc; // =50 for tCK=2.5ns
                16); //input [ 7:0] t_refi; // 48/97 for normal, 8 - for simulation
            $display("SET WRITE LEVELING @ %t",$time);    
            set_write_lev(16); // write leveling, 16 times   (full buffer - 128) 
            $display("SET READ PATTERN @ %t",$time);    
            set_read_pattern(8); // 8x2*64 bits, 32x32 bits to read
            $display("SET WRITE BLOCK @ %t",$time);    
            set_write_block(
                3'h5,     // bank
                15'h1234, // row address
                10'h100   // column address
            );
           
            $display("SET READ BLOCK @ %t",$time);    
            set_read_block(
                3'h5,     // bank
                15'h1234, // row address
                10'h100   // column address
            );
        end
endtask

task write_block_scanline_chn;  // S uppressThisWarning VEditor : may be unused
    input integer chn; // buffer channel
    input   [1:0] page;
//    input integer num_words; // number of words to write (will be rounded up to multiple of 16)
    input [NUM_XFER_BITS:0] num_bursts; // number of 8-bursts to write (will be rounded up to multiple of 16)
    input integer startX;
    input integer startY;
    reg    [29:0] start_addr;
    integer num_words;
    begin
//        $display("====== write_block_scanline_chn:%d page: %x X=0x%x Y=0x%x num=%d @%t", chn, page, startX, startY,num_words, $time);
        $display("====== write_block_scanline_chn:%d page: %x X=0x%x Y=0x%x num=%d @%t", chn, page, startX, startY,num_bursts, $time);
        case (chn)
            1:  start_addr=MCONTR_BUF1_WR_ADDR + (page << 8);
            3:  start_addr=MCONTR_BUF3_WR_ADDR + (page << 8);
            default: begin
                $display("**** ERROR: Invalid channel for write_block_scanline_chn = %d @%t", chn, $time);
                start_addr = MCONTR_BUF1_WR_ADDR+ (page << 8);
            end
        endcase
        num_words=num_bursts << 2;
        write_block_incremtal (start_addr, num_words, (startX<<2) + (startY<<16)); // 1 of startX is 8x16 bit, 16 bytes or 4 32-bit words
//        write_block_incremtal (start_addr, num_bursts << 2, (startX<<2) + (startY<<16)); // 1 of startX is 8x16 bit, 16 bytes or 4 32-bit words
    end
endtask


`include "includes/x393_tasks_mcntrl_en_dis_priority.vh"
`include "includes/x393_tasks_mcntrl_buffers.vh"
`include "includes/x393_tasks_pio_sequences.vh"
`include "includes/x393_tasks_mcntrl_timing.vh" 
`include "includes/x393_tasks_ps_pio.vh"
`include "includes/x393_tasks_status.vh"
`include "includes/x393_tasks01.vh"
`include "includes/x393_mcontr_encode_cmd.vh"
endmodule