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`timescale   1ns/1ns

module test28F016SC();

reg [`AddrSize-1:0]  address;

reg [31:0]  vcc,

            vpp;

reg         ceb,

            oeb,

            web,

            rpb;

wire        ryby;

reg [1:0]   rpblevel;    // 00 = VIL

                         // 01 = VIH

                         // 10 = VHH

reg    [`MaxOutputs-1:0]  dq_reg;

wire   [`MaxOutputs-1:0]  dq = dq_reg;

i28f016s3 IFlash (dq, address, ceb, oeb, web, rpb, ryby, vpp, vcc, rpblevel);

initial

    begin

//        $dumpfile("f008sc.dmp");

//        $dumpoff;

//        $dumpvars(???,dq,address,ceb,oeb,web,rpb);

       dq_reg = `MaxOutputs'hz;

       rpblevel = `rpb_vil;

       powerup;

       ReadID;

       //Verify READS with loose timing (OE Toggling)

       #100

       SetReadMode;

       $display("READ DATA, Loose Timing, toggle OE");

       #100

       ReadData(`AddrSize'h0);

       #100

       ReadData(`AddrSize'h10000);

       #100

       ReadData(`AddrSize'h1F0000);

       #100

       ReadData(`AddrSize'h1FFFFF);

       $display("READ DATA, Loose Timing, toggle Addr");

       //Verify Reads (OE LOW)

       #100

       address = `AddrSize'h3FFFF;

       #100

       address = `AddrSize'h4FFFF;

       #100

       address = `AddrSize'h5FFFF;

       #100

       oeb = `VIH;

       $display("SET BLOCK LOCK-BITS");

       #100

       SetBlockLockBit(`AddrSize'h000000);

       #100

       SetBlockLockBit(`AddrSize'h010000);

       #100

       SetBlockLockBit(`AddrSize'h1F0000);

       #100

       ReadID;

       #100

       oeb = `VIH;

       #100

       $display("PROGRAM DATA, Loose Timing, Block Locked");

       #100

       ProgramData(`AddrSize'h000000, `MaxOutputs'h00);

       #100

       ProgramData(`AddrSize'h010000, `MaxOutputs'h01);

       #100

       ProgramData(`AddrSize'h1F0000, `MaxOutputs'h0F);

       #100

       ProgramData(`AddrSize'h1FFFFF, `MaxOutputs'h10);

       #100

       SetReadMode;

       $display("READ DATA, Loose Timing, toggle OE");

       #100

       ReadData(`AddrSize'h000000);

       #100

       ReadData(`AddrSize'h010000);

       $display("READ DATA, Loose Timing, toggle Addr");

       //Verify Reads (OE LOW)

       #100

       address = `AddrSize'h1F0000;

       #100

       address = `AddrSize'h1FFFFF;

       #100

       oeb = `VIH;

       $display("BLOCK LOCK-BIT OVERRIDE");

       #100

       rpblevel = `rpb_vhh;

       #100

       ProgramData(`AddrSize'h000000, `MaxOutputs'h00);

       #100

       rpblevel = `rpb_vih;

       #100

       SetReadMode;

       #100

       ReadData(`AddrSize'h000000);

       #100

       oeb = `VIH;

       $display("CLEAR BLOCK LOCK-BITS");

       #100

       ClearBlockLockBit;

       $display("PROGRAM DATA, Boot Unlocked");

       #100

       ProgramData(`AddrSize'h015000, `MaxOutputs'h51);

       #100

       ProgramData(`AddrSize'h015FFF, `MaxOutputs'h22);

       #100

       ProgramData(`AddrSize'h020000, `MaxOutputs'h02);

       #100

       ProgramData(`AddrSize'h04FFFF, `MaxOutputs'h11);

       #100

       ProgramData(`AddrSize'h050001, `MaxOutputs'h12);

       #100

       ProgramData(`AddrSize'h060000, `MaxOutputs'h06);

       #100

       ProgramData(`AddrSize'h06FFFF, `MaxOutputs'hF6);

       #100

       ProgramData(`AddrSize'h1F0000, `MaxOutputs'hAA);

       #100

       ProgramData2(`AddrSize'h1FFFFF, `MaxOutputs'h55);

       $display("READ DATA, Loose Timing,  Toggle OE");

       #100

       SetReadMode;

       #100

       ReadData(`AddrSize'h015000);

       #100

       address = `AddrSize'h1F0000;

       #100

       address = `AddrSize'h1FFFFF;

       #100

       address = `AddrSize'h020000;

       #100

       address = `AddrSize'h0F0000;

       #100

       address = `AddrSize'h0FFFFF;

       #100

       oeb = `VIH;

       $display("ERASE BLOCK");

       #100

       EraseBlock(`AddrSize'h1F000F);

       $display("READ DATA, Loose Timing, Toggle Addr");

       #100

       SetReadMode;

       #100

       oeb = `VIL;

       #100

       address = `AddrSize'h1F0000;

       #100

       address = `AddrSize'h1FFFFF;

       #100

       address = `AddrSize'h015000;

       #100

       oeb = `VIH;

       begin:  WriteSuspend

         $display("WRITE SUSPEND TEST");

         #100

         StartProgram(`AddrSize'h050000, `MaxOutputs'h05);

         #150

         oeb = `VIH;

         #100

         oeb = `VIL;

         #100

         oeb = `VIH;

         #(((`AC_ProgramTime_Byte_50_12/2)*`TimerPeriod_)-1000)

         Suspend;

         #100

         SetReadMode;

         #100

         ReadData(`AddrSize'h04FFFF);

         #100

         ReadData(`AddrSize'h050000);

         #100

         ReadData(`AddrSize'h050001);

         #100

         oeb = `VIH;

         #100

         StartProgram(`AddrSize'h0AA000, `MaxOutputs'h66);

         #300

         Resume;

         #100

         oeb = `VIL;

         #((`AC_ProgramTime_Byte_50_12/2)*`TimerPeriod_)

         begin: Poll

           forever

             begin

               oeb = `VIH;

               #500

               oeb = `VIL;

               #500

               if (dq[7] == `VIH)

                 disable Poll;

             end

         end

         #300

         SetReadMode;

         #100

         ReadData(`AddrSize'h050001);

         #100

         ReadData(`AddrSize'h050000);

         #100

         ReadData(`AddrSize'h0AA000);

         #100

         oeb = `VIH;

       end  //WriteSuspend

       begin: BadErase

         $display("BAD ERASE TEST");

         #100

         address = `AddrSize'h060000;

         #100

         dq_reg = `EraseBlockCmd;

         #100

         web = `VIL;

         #100

         web = `VIH;

         #100

         dq_reg = `ReadArrayCmd;

         #100

         web = `VIL;

         #100

         web = `VIH;

         #100

         dq_reg = `MaxOutputs'hz;

         #100

         oeb = `VIL;

         #1000

         begin: Poll

           forever

             begin

               oeb = `VIH;

               #1000

               oeb = `VIL;

               #1000

               if (dq[7] == `VIH)

                 disable Poll;

             end

         end

       end //BadErase

       #200

       ReadCSRMode;

       #200

       ClearCSRMode;

       #200

       ReadCSRMode;

       #200

       SetReadMode;

       #100

       ReadData(`AddrSize'h060000);

       #100

       ReadData(`AddrSize'h06FFFF);

       #100

       oeb = `VIH;

       begin:  EraseSuspend

         $display("ERASE SUSPEND TEST");

         #100

         StartErase(`AddrSize'h015000);

         #1000

         oeb = `VIH;

         #100

         oeb = `VIL;

         #100

         oeb = `VIH;

         #(((`AC_EraseTime_Block_50_12/2)*`TimerPeriod_)-1000)

         Suspend;

         #100

         SetReadMode;

         #100

         ReadData(`AddrSize'h020000);

         #100

         ReadData(`AddrSize'h015FFF);

         #100

         oeb = `VIH;

         #300

         Resume;

         #100

         oeb = `VIL;

         #(((`AC_EraseTime_Block_50_12/2)*`TimerPeriod_)-1000)

         begin: Poll

           forever

             begin

               oeb = `VIH;

               #1000

               oeb = `VIL;

               #1000

               if (dq[7] == `VIH)

                 disable Poll;

             end

         end

         #300

         SetReadMode;

         #100

         ReadData(`AddrSize'h010000);

         #100

         ReadData(`AddrSize'h015FFF);

         #100

         ReadData(`AddrSize'h020000);

         #100

         oeb = `VIH;

       end  //EraseSuspend

       #300

       $display("Embedded Suspend Mode");

       begin:  EraseSuspend_

         #100

         StartErase(`AddrSize'h065000);

         #1000

         oeb = `VIH;

         #100

         oeb = `VIL;

         #100

         oeb = `VIH;

         #(((`AC_EraseTime_Block_50_12/2)*`TimerPeriod_)-1000)

         Suspend;

         #100

         SetReadMode;

         #100

         ReadData(`AddrSize'h050000);

         #100

         oeb = `VIH;

         begin:  WriteSuspend_

           $display("EMBEDDED WRITE SUSPEND TEST");

           #100

           StartProgram(`AddrSize'h0FFFFF, `MaxOutputs'h77);

           #150

           oeb = `VIH;

           #100

           oeb = `VIL;

           #100

           oeb = `VIH;

           #((`AC_ProgramTime_Byte_50_12/2)*`TimerPeriod_)

           Suspend;

           #100

           SetReadMode;

           #100

           ReadData(`AddrSize'h050001);

           #100

           ReadData(`AddrSize'h060000);

           #100

           oeb = `VIH;

           #300

           Resume;  //Write Operation

           #100

           oeb = `VIL;

           #500

//           #((`AC_ProgramTime_Byte_50_12/2)*`TimerPeriod_)

           begin: Poll

             forever

               begin

                 oeb = `VIH;

                 #500

                 oeb = `VIL;

                 #500

                 if (dq[7] == `VIH)

                   disable Poll;

               end

           end

           #300

           SetReadMode;

           #100

           ReadData(`AddrSize'h0FFFFF);

           #100

           oeb = `VIH;

         end  //WriteSuspend_

         #300

         Resume;  //Erase Operation

         #100

         oeb = `VIL;

         #(((`AC_EraseTime_Block_50_12/2)*`TimerPeriod_)-1000)

         begin: Poll

           forever

             begin

               oeb = `VIH;

               #1000

               oeb = `VIL;

               #1000

               if (dq[7] == `VIH)

                 disable Poll;

             end

         end

         #300

         SetReadMode;

         #100

         ReadData(`AddrSize'h06FFFF);

         #100

         ReadData(`AddrSize'h060000);

         #100

         ReadData(`AddrSize'h050000);

         #100

         oeb = `VIH;

       end  //EraseSuspend_

       begin: MasterLockBitTest

         $display("MASTER LOCK-BIT TEST");

         SetMasterLockBit(`AddrSize'h0);

         #100

         rpblevel = `rpb_vhh;

         #100

         SetMasterLockBit(`AddrSize'h0);

         #100

         rpblevel = `rpb_vih;

         #100

         SetBlockLockBit(`AddrSize'h090000);

         #100

         rpblevel = `rpb_vhh;

         #100

         SetBlockLockBit(`AddrSize'h080000);

         #100

         SetBlockLockBit(`AddrSize'h070000);

         #100

         rpblevel = `rpb_vih;

         #100

         ProgramData(`AddrSize'h090000, `MaxOutputs'h09);

         #100

         ProgramData(`AddrSize'h080000, `MaxOutputs'h08);

         #100

         ProgramData(`AddrSize'h070000, `MaxOutputs'h07);

         #200

         SetReadMode;

         #100

         ReadData(`AddrSize'h070000);

         #100

         ReadData(`AddrSize'h080000);

         #100

         ReadData(`AddrSize'h090000);

         #100

         oeb = `VIH;

         #100

         ClearBlockLockBit;

         #100

         rpblevel = `rpb_vhh;

         #100

         ClearBlockLockBit;

         #100

         rpblevel = `rpb_vih;

         #100

         ProgramData(`AddrSize'h080000, `MaxOutputs'h08);

         #100

         ProgramData(`AddrSize'h070000, `MaxOutputs'h07);

         #100

         SetReadMode;

         #100

         ReadData(`AddrSize'h070000);

         #100

         ReadData(`AddrSize'h080000);

         #100

         oeb = `VIH;

       end

       #100

       vcc = 3450;

       #100

       ReadData(`AddrSize'h000000);

       #100

       ReadData(`AddrSize'h0FFFFF);

       #1000

       powerdown;

       #1000 $finish;

    end

always @(dq or address or ceb or rpb or oeb or web or vcc or vpp or rpblevel)

  begin

    $display(

      "%d Addr = %h, Data = %h, CEb=%b, RPb=%b, OEb=%b, WEb=%d, vcc=%d, vpp = %d",

      $time, address, dq, ceb, rpb, oeb, web, vcc, vpp);

  end

task powerup;

  begin

    $display("  POWERUP TASK");

    rpb = `VIL;         //reset

    #100

    address = 0;

    #100

    web = `VIH;         //write enable high

    #100

    oeb = `VIH;         //output ts

    #100

    ceb = `VIH;         //disabled

    #100

    vcc = 5000;         //power up vcc

    #5000

    vpp = 12000;        //ramp up vpp

    #5000

    rpb = `VIH;         //out of reset

    rpblevel = `rpb_vih;

    #100

    oeb = `VIL;         //enable outputs

    #100

    ceb = `VIL;         //enable chip

  end

endtask

task powerdown;

  begin

    $display("  POWERDOWN TASK");

    address = 0;

    #100

    rpb = `VIL;     //reset

    #100

    oeb = `VIH;     //output ts

    #100

    web = `VIH;     //we high

    #100

    ceb = `VIH;     //disabled

    #100

    vpp = 0;        //power down vpp

    #5000

    vcc = 0;        //ramp down vcc

  end

endtask

task ReadData;

  input [`AddrSize-1:0] addr;

  begin

    $display("  READDATA TASK");

    oeb = `VIH;

    #100

    address = addr;

    #100

    oeb = `VIL;

  end

endtask

task SetReadMode;

  begin

    $display("  SETREADMODE TASK");

    oeb = `VIH;

    #100

    dq_reg[`Byte] = `ReadArrayCmd;

    #100

    web = `VIL;

    #100

    web = `VIH;

    #100

    dq_reg = `MaxOutputs'hz;

  end

endtask

task ReadID;

  begin

    $display("  READID TASK");

    oeb = `VIH;

    #100

    address = `AddrSize'h0;

    #100

    dq_reg[`Byte] = `ReadIDCmd;

    #100

    web = `VIL;

    #100

    web = `VIH;

    #100

    dq_reg = `MaxOutputs'hz;

    #100

    oeb = `VIL;

    #100

    address = `AddrSize'h1;

    #100

    address = `AddrSize'h3;

    #100

    address = `AddrSize'h2;

    #100

    address = `AddrSize'h10002;

  end

endtask

task ReadCSRMode;

  begin

    $display("  READCSR MODE TASK");

    oeb = `VIH;

    #100

    dq_reg[`Byte] = `ReadCSRCmd;

    #100

    web = `VIL;

    #100

    web = `VIH;

    #100

    dq_reg = `MaxOutputs'hz;

    #100

    oeb = `VIL;

  end

endtask

task ClearCSRMode;

  begin

    $display("  CLEARCSRMODE TASK");

    oeb = `VIH;

    #100

    dq_reg[`Byte] = `ClearCSRCmd;

    #100

    web = `VIL;

    #100

    web = `VIH;

    #100

    dq_reg = `MaxOutputs'hz;

  end

endtask

task StartProgram;

  input [`AddrSize-1:0] addr;

  input [`MaxOutputs-1:0] data;

  begin

    $display("  STARTPROGRAM TASK");

    #100

    address = addr;

    #100

    dq_reg[`Byte] = `Program2Cmd;