k7a163600a.vhd

vhdl cod for ram.For sp3e

        CONSTANT il1 : sequence := (0, -1, 2, 1);
        CONSTANT il2 : sequence := (0, 1, -2, -1);
        CONSTANT il3 : sequence := (0, -1, -2, -3);
        CONSTANT il  : seqtab := (il0, il1, il2, il3);

        CONSTANT ln0 : sequence := (0, 1, 2, 3);
        CONSTANT ln1 : sequence := (0, 1, 2, -1);
        CONSTANT ln2 : sequence := (0, 1, -2, -1);
        CONSTANT ln3 : sequence := (0, -3, -2, -1);
        CONSTANT ln  : seqtab := (ln0, ln1, ln2, ln3);

        CONSTANT MemSize : INTEGER := 16#7FFFF#;  -- 512K
        CONSTANT MaxData : INTEGER := 16#1FF#;    -- 511

        -- Memory array declaration
        TYPE MemStore IS ARRAY (0 to MemSize) OF INTEGER
                         RANGE  -2 TO MaxData;

        SHARED VARIABLE MemDataA   : MemStore;
        SHARED VARIABLE MemDataB   : MemStore;
        SHARED VARIABLE MemDataC   : MemStore;
        SHARED VARIABLE MemDataD   : MemStore;

        SIGNAL Burst_Seq : seqtab := ln;
        SIGNAL D_zd      : std_logic_vector(35 DOWNTO 0);

    BEGIN

    ----------------------------------------------------------------------------
    -- Power Up time
    ----------------------------------------------------------------------------
        PoweredUp <= TRUE AFTER tdevice_tPOW;

        Burst_Setup : PROCESS (LBONIn)

        BEGIN

           IF (LBONIn = '1') THEN
               Burst_Seq <= il;  -- interleaved burst
           ELSIF (LBONIn = '0') THEN
               Burst_Seq <= ln;  -- linear burst
           END IF;

        END PROCESS Burst_Setup;

    ----------------------------------------------------------------------------
    -- Main Behavior Process
    ----------------------------------------------------------------------------
        Behavior : PROCESS (WEANIn, WEBNIn, WECNIn, WEDNIn, DatAIn, DatBIn,
                            DatCIn, DatDIN, CLKIn, AddressIn, GWNIn, BWENIn,
                            OENegIn, ADVNIn, ADSPNIn, ADSCNIn, CS2In, CS1NegIn,
                            CS2NegIn, ZZIn)

            -- Type definition for commands
            TYPE command_type is (ds,
                                  SPwr_burst,
                                  SPwr_susp,
                                  SCwr,
                                  begin_rw,
                                  read_burst,
                                  read_susp
                                 );

            -- Timing Check Variables

            VARIABLE Tviol_AddressIn_CLK : X01 := '0';
            VARIABLE TD_AddressIn_CLK    : VitalTimingDataType;

            VARIABLE Tviol_DatDIn_CLK    : X01 := '0';
            VARIABLE TD_DatDIn_CLK       : VitalTimingDataType;

            VARIABLE Tviol_DatCIn_CLK    : X01 := '0';
            VARIABLE TD_DatCIn_CLK       : VitalTimingDataType;

            VARIABLE Tviol_DatBIn_CLK    : X01 := '0';
            VARIABLE TD_DatBIn_CLK       : VitalTimingDataType;

            VARIABLE Tviol_DatAIn_CLK    : X01 := '0';
            VARIABLE TD_DatAIn_CLK       : VitalTimingDataType;

            VARIABLE Tviol_WEDN_CLK      : X01 := '0';
            VARIABLE TD_WEDN_CLK         : VitalTimingDataType;

            VARIABLE Tviol_WECN_CLK      : X01 := '0';
            VARIABLE TD_WECN_CLK         : VitalTimingDataType;

            VARIABLE Tviol_WEBN_CLK      : X01 := '0';
            VARIABLE TD_WEBN_CLK         : VitalTimingDataType;

            VARIABLE Tviol_WEAN_CLK      : X01 := '0';
            VARIABLE TD_WEAN_CLK         : VitalTimingDataType;

            VARIABLE Tviol_BWEN_CLK      : X01 := '0';
            VARIABLE TD_BWEN_CLK         : VitalTimingDataType;

            VARIABLE Tviol_GWN_CLK       : X01 := '0';
            VARIABLE TD_GWN_CLK          : VitalTimingDataType;

            VARIABLE Tviol_ADVNIn_CLK    : X01 := '0';
            VARIABLE TD_ADVNIn_CLK       : VitalTimingDataType;

            VARIABLE Tviol_ADSCNIn_CLK   : X01 := '0';
            VARIABLE TD_ADSCNIn_CLK      : VitalTimingDataType;

            VARIABLE Tviol_ADSPNIn_CLK   : X01 := '0';
            VARIABLE TD_ADSPNIn_CLK      : VitalTimingDataType;

            VARIABLE Tviol_CS1NegIn_CLK  : X01 := '0';
            VARIABLE TD_CS1NegIn_CLK     : VitalTimingDataType;

            VARIABLE Tviol_CS2NegIn_CLK  : X01 := '0';
            VARIABLE TD_CS2NegIn_CLK     : VitalTimingDataType;

            VARIABLE Tviol_CS2In_CLK     : X01 := '0';
            VARIABLE TD_CS2In_CLK        : VitalTimingDataType;

            VARIABLE Pviol_CLK    : X01 := '0';
            VARIABLE PD_CLK       : VitalPeriodDataType := VitalPeriodDataInit;

            VARIABLE MemAddr    : NATURAL RANGE 0 TO MemSize;
            VARIABLE startaddr  : NATURAL RANGE 0 TO MemSize;

            VARIABLE Burst_Cnt  : NATURAL RANGE 0 TO 4 := 0;
            VARIABLE memstart   : NATURAL RANGE 0 TO 3 := 0;
            VARIABLE offset     : INTEGER RANGE -3 TO 3 := 0;

            VARIABLE command    : command_type;
            VARIABLE R          : std_logic;

            VARIABLE zz_set     : BOOLEAN := false;
            VARIABLE zz_reset   : BOOLEAN := true;
            VARIABLE zz_cnt     : INTEGER RANGE 0 TO 2 := 0;

            -- Functionality Results Variables
            VARIABLE Violation  : X01 := '0';

            VARIABLE OBuf1      : std_logic_vector(35 DOWNTO 0)
                                   := (OTHERS => 'Z');
            VARIABLE OBuf2      : std_logic_vector(35 DOWNTO 0)
                                   := (OTHERS => 'Z');

        BEGIN

            --------------------------------------------------------------------
            -- Timing Check Section
            --------------------------------------------------------------------
            IF (TimingChecksOn) THEN

                VitalSetupHoldCheck (
                    TestSignal      => AddressIn,
                    TestSignalName  => "Address",
                    RefSignal       => CLKIn,
                    RefSignalName   => "CLK",
                    SetupHigh       => tsetup_A0_CLK,
                    SetupLow        => tsetup_A0_CLK,
                    HoldHigh        => thold_A0_CLK,
                    HoldLow         => thold_A0_CLK,
                    CheckEnabled    => (ZZIn = '0'),
                    RefTransition   => '/',
                    HeaderMsg       => InstancePath & PartID,
                    TimingData      => TD_AddressIn_CLK,
                    XOn             => XOn,
                    MsgOn           => MsgOn,
                    Violation       => Tviol_AddressIn_CLK );

                VitalSetupHoldCheck (
                    TestSignal      => DatDIn,
                    TestSignalName  => "DatD",
                    RefSignal       => CLKIn,
                    RefSignalName   => "CLK",
                    SetupHigh       => tsetup_DQA0_CLK,
                    SetupLow        => tsetup_DQA0_CLK,
                    HoldHigh        => thold_DQA0_CLK,
                    HoldLow         => thold_DQA0_CLK,
                    CheckEnabled    => (ZZIn ='0'),
                    RefTransition   => '/',
                    HeaderMsg       => InstancePath & PartID,
                    TimingData      => TD_DatDIn_CLK,
                    XOn             => XOn,
                    MsgOn           => MsgOn,
                    Violation       => Tviol_DatDIn_CLK );

                VitalSetupHoldCheck (
                    TestSignal      => DatCIn,
                    TestSignalName  => "DatC",
                    RefSignal       => CLKIn,
                    RefSignalName   => "CLK",
                    SetupHigh       => tsetup_DQA0_CLK,
                    SetupLow        => tsetup_DQA0_CLK,
                    HoldHigh        => thold_DQA0_CLK,
                    HoldLow         => thold_DQA0_CLK,
                    CheckEnabled    => (ZZIn ='0'),
                    RefTransition   => '/',
                    HeaderMsg       => InstancePath & PartID,
                    TimingData      => TD_DatCIn_CLK,
                    XOn             => XOn,
                    MsgOn           => MsgOn,
                    Violation       => Tviol_DatCIn_CLK );

                VitalSetupHoldCheck (
                    TestSignal      => DatBIn,
                    TestSignalName  => "DatB",
                    RefSignal       => CLKIn,
                    RefSignalName   => "CLK",
                    SetupHigh       => tsetup_DQA0_CLK,
                    SetupLow        => tsetup_DQA0_CLK,
                    HoldHigh        => thold_DQA0_CLK,
                    HoldLow         => thold_DQA0_CLK,
                    CheckEnabled    => (ZZIn ='0'),
                    RefTransition   => '/',
                    HeaderMsg       => InstancePath & PartID,
                    TimingData      => TD_DatBIn_CLK,
                    XOn             => XOn,
                    MsgOn           => MsgOn,
                    Violation       => Tviol_DatBIn_CLK );

                VitalSetupHoldCheck (
                    TestSignal      => DatAIn,
                    TestSignalName  => "DatA",
                    RefSignal       => CLKIn,
                    RefSignalName   => "CLK",
                    SetupHigh       => tsetup_DQA0_CLK,
                    SetupLow        => tsetup_DQA0_CLK,
                    HoldHigh        => thold_DQA0_CLK,
                    HoldLow         => thold_DQA0_CLK,
                    CheckEnabled    => (ZZIn ='0'),
                    RefTransition   => '/',
                    HeaderMsg       => InstancePath & PartID,
                    TimingData      => TD_DatAIn_CLK,
                    XOn             => XOn,
                    MsgOn           => MsgOn,
                    Violation       => Tviol_DatAIn_CLK );

                VitalSetupHoldCheck (
                    TestSignal      => GWNIn,
                    TestSignalName  => "GW",
                    RefSignal       => CLKIn,
                    RefSignalName   => "CLK",
                    SetupHigh       => tsetup_WEANeg_CLK,
                    SetupLow        => tsetup_WEANeg_CLK,
                    HoldHigh        => thold_WEANeg_CLK,
                    HoldLow         => thold_WEANeg_CLK,
                    CheckEnabled    => (ZZIn ='0'),
                    RefTransition   => '/',
                    HeaderMsg       => InstancePath & PartID,
                    TimingData      => TD_GWN_CLK,
                    XOn             => XOn,
                    MsgOn           => MsgOn,
                    Violation       => Tviol_GWN_CLK );

                VitalSetupHoldCheck (
                    TestSignal      => BWENIn,
                    TestSignalName  => "BWE",
                    RefSignal       => CLKIn,
                    RefSignalName   => "CLK",
                    SetupHigh       => tsetup_WEANeg_CLK,
                    SetupLow        => tsetup_WEANeg_CLK,
                    HoldHigh        => thold_WEANeg_CLK,
                    HoldLow         => thold_WEANeg_CLK,
                    CheckEnabled    => (ZZIn ='0'),
                    RefTransition   => '/',
                    HeaderMsg       => InstancePath & PartID,
                    TimingData      => TD_BWEN_CLK,
                    XOn             => XOn,
                    MsgOn           => MsgOn,
                    Violation       => Tviol_BWEN_CLK );

                VitalSetupHoldCheck (
                    TestSignal      => WEDNIn,
                    TestSignalName  => "WED",
                    RefSignal       => CLKIn,
                    RefSignalName   => "CLK",
                    SetupHigh       => tsetup_WEANeg_CLK,
                    SetupLow        => tsetup_WEANeg_CLK,
                    HoldHigh        => thold_WEANeg_CLK,