Appendix A  Tabular Alignment  


         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
--  version: |  author:  | mod date: | changes made:
--    V1.0     R. Steele   97 APR 18   Conformed to style guide
        ^           ^
The first two fields are centered under the header

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
    |           |                                                            
--  PART DESCRIPTION:
-- 
--  Library:    IF (Interface)
--  Technology: TTL
--  Part:       75173
-- 
--  Desciption: Quad Differential Line Receivers


         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
                |                                                            
LIBRARY IEEE;   USE IEEE.std_logic_1164.ALL;
                USE IEEE.VITAL_timing.ALL;
                USE IEEE.VITAL_primitives.ALL;
LIBRARY FMF;    USE FMF.gen_utils.ALL;


         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
        |                   |           
        tipd_LEN2           : VitalDelayType01 := VitalZeroDelay01;
        tipd_ENPNeg         : VitalDelayType01 := VitalZeroDelay01;

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
        |                               |                   |            
        tpd_A_Y                         : VitalDelayType01  := UnitDelay01;
        tpd_G_Y                         : VitalDelayType01Z := UnitDelay01Z;
        trecovery_MR_LEN1               : VitalDelayType    := ECLUnitDelay;
        tsetup_S0_CLK_S0_EQ_0_AN_S1_EQ_0: VitalDelayType    := UnitDelay;

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
        |                   |           |                                     
        InstancePath        : STRING    := DefaultECLInstancePath;
        TimingChecksOn      : BOOLEAN   := DefaultECLTimingChecks;
        MsgOn               : BOOLEAN   := DefaultECLMsgOn;
        XOn                 : BOOLEAN   := DefaultECLXOn;
        -- For FMF SDF technology file usage
        TimingModel         : STRING    := DefaultECLTimingModel

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
    |                   |       |                                             
    PORT (
        A               : IN    std_logic := 'U';
        ANeg            : IN    std_logic := 'U';
        D               : INOUT std_logic := 'U';




                                       A-2

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
    |                       |                                                 
    SIGNAL ANeg_ipd         : std_ulogic := 'X';

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
    |       |           |                                                     
    a_3: VitalBUFIF1 (
            q            => Y, 
            data         => Aint, 
            Enable       => Gint, 
            tpd_data_q   => tpd_A_Y,
            tpd_enable_q => tpd_G_Y
         );

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
        |                       |                                            
        VARIABLE Rviol_MR_LEN1  : X01 := '0';
        VARIABLE TD_MR_LEN1     : VitalTimingDataType;

        VARIABLE Pviol_MR       : X01 := '0';
        VARIABLE PD_MR          : VitalPeriodDataType := VitalPeriodDataInit;

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
            |                   |                                            
            VitalPeriodPulseCheck (
                TestSignal      => MR_ipd,
                TestSignalName  => "MR_ipd",
                PulseWidthHigh  => tpw_MR_posedge,

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
        |                   |                                                
        VitalStateTable (
            StateTable      => LATR_tab,
            DataIn          => (Violation, LENint, Dint, MR_ipd),

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
        |       |           |                                                
        VitalPathDelay01 (
            OutSignal       => Qint,
            OutSignalName   => "Qint",
            OutTemp         => Q_zd,
            GlitchData      => Q_GlitchData,
            XOn             => XOn,
            MsgOn           => MsgOn,
            Paths           => (
                0 => (InputChangeTime   => LENint'LAST_EVENT,
                      PathDelay         => tpd_LEN1_Q,
                      PathCondition     => TRUE),