xref: /gem5/src/systemc/tests/systemc/misc/unit/data/user_guide/ch9/std_ulogic_datatype/std_ulogic_datatype.cpp

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/*****************************************************************************

  std_ulogic_datatype.cpp --

  Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15

 *****************************************************************************/

/*****************************************************************************

  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
  changes you are making here.

      Name, Affiliation, Date:
  Description of Modification:

 *****************************************************************************/

/* Main file for "std_ulogic" data type */

#include "systemc.h"

typedef sc_logic std_ulogic;

int sc_main(int ac, char *av[])
{

// 1. DECLARATION SYNTAX
  std_ulogic	s1;
  std_ulogic    s2, s3, s4, s5, s6, s7, s8, s9, s10, s11;


// 2. TYPE CONVERSION

  // std_ulogic <- std_ulogic
  s1  = 'U';
  s2  = 'X';
  s3  = '0';
  s4  = '1';
  s5  = 'Z';
  s6  = 'W';
  s7  = 'L';
  s8  = 'H';
  s9  = '-';
  s10 = true;
  s11 = false;

  cout 	<< "\nstd_ulogic \t<=\t\t std_ulogic"
	<< "\n-------------------------------------------"
       	<< "\nUNINITIALIZED \t= " << s1  << "\t\t 'U'"
	<< "\nUNKNOWN \t= "       << s2  << "\t\t 'X'"
       	<< "\nZERO \t\t= "        << s3  << "\t\t '0'"
	<< "\nONE \t\t= "         << s4  << "\t\t '1'"
	<< "\nTRISTATE \t= "      << s5  << "\t\t 'Z'"
       	<< "\nWEAK-UNKNOWN \t= "  << s6  << "\t\t 'W'"
	<< "\nWEAK-ZERO \t= "     << s7  << "\t\t 'L'"
	<< "\nWEAK-ONE \t= "      << s8  << "\t\t 'H'"
	<< "\nDONT-CARE \t= "     << s9  << "\t\t '-'"
	<< "\nTRUE \t\t= "        << s10 << "\t\t true"
	<< "\nFALSE \t\t= "       << s11 << "\t\t false"
       	<< "\n" << endl;

  // std_ulogic <- literals
  std_ulogic 	a, b, c, d;

  a = true;
  b = false;
  c = 1;
  d = 0;

  cout  << "std_ulogic   <=\t literals"
        << "\n-------------------------"
        << "\nA = " << a << "\t\t true"
        << "\nB = " << b << "\t\t false"
        << "\nC = " << c << "\t\t 1"
        << "\nD = " << d << "\t\t 0"
        << "\n" << endl;

  // std_ulogic <- bool
  std_ulogic    su1, su2, su3, su4;
  bool		b1, b2, b3, b4;

  b1  = true;
  b2  = false;
  b3  = 1;
  b4  = 0;

  su1 = b1;
  su2 = b2;
  su3 = b3;
  su4 = b4;

  cout  << "std_ulogic  <=\t bool"
        << "\n---------------------"
        << "\nTRUE \t= "  << su1 << "\t " << b1
        << "\nFALSE \t= " << su2 << "\t " << b2
        << "\n1 \t= " 	  << su3 << "\t " << b3
        << "\n0 \t= " 	  << su4 << "\t " << b4
        << "\n" << endl;

  // std_ulogic <- char
  std_ulogic	sc1, sc2, sc3, sc4, sc5, sc6, sc7, sc8, sc9;
  std_ulogic	sc10, sc11, sc12, sc13, sc14, sc15, sc16, sc17, sc18, sc19;
  char		c1, c2, c3, c4, c5, c6, c7, c8, c9;
  char		c10, c11, c12, c13, c14, c15, c16, c17, c18, c19;

  c1  = 'U';
  c2  = 'u';
  c3  = 'X';
  c4  = 'x';
  c5  = '0';
  c6  = '1';
  c7  = 'Z';
  c8  = 'z';
  c9  = 'W';
  c10 = 'w';
  c11 = 'L';
  c12 = 'l';
  c13 = 'H';
  c14 = 'h';
  c15 = '-';
  c16 = 'D';
  c17 = 'd';
  c18 = 'B';
  c19 = 'F';

  sc1  = c1;
  sc2  = c2;
  sc3  = c3;
  sc4  = c4;
  sc5  = c5;
  sc6  = c6;
  sc7  = c7;
  sc8  = c8;
  sc9  = c9;
  sc10 = c10;
  sc11 = c11;
  sc12 = c12;
  sc13 = c13;
  sc14 = c14;
  sc15 = c15;
  sc16 = c16;
  sc17 = c17;
  sc18 = c18;
  sc19 = c19;

  cout  << "std_ulogic  <=\t char"
        << "\n---------------------"
        << "\nSC1 \t= "  << sc1  << "\t '" << c1  << "'"
        << "\nSC2 \t= "  << sc2  << "\t '" << c2  << "'"
        << "\nSC3 \t= "  << sc3  << "\t '" << c3  << "'"
        << "\nSC4 \t= "  << sc4  << "\t '" << c4  << "'"
        << "\nSC5 \t= "  << sc5  << "\t '" << c5  << "'"
        << "\nSC6 \t= "  << sc6  << "\t '" << c6  << "'"
        << "\nSC7 \t= "  << sc7  << "\t '" << c7  << "'"
        << "\nSC8 \t= "  << sc8  << "\t '" << c8  << "'"
        << "\nSC9 \t= "  << sc9  << "\t '" << c9  << "'"
        << "\nSC10 \t= " << sc10 << "\t '" << c10 << "'"
        << "\nSC11 \t= " << sc11 << "\t '" << c11 << "'"
        << "\nSC12 \t= " << sc12 << "\t '" << c12 << "'"
        << "\nSC13 \t= " << sc13 << "\t '" << c13 << "'"
        << "\nSC14 \t= " << sc14 << "\t '" << c14 << "'"
        << "\nSC15 \t= " << sc15 << "\t '" << c15 << "'"
        << "\nSC16 \t= " << sc16 << "\t '" << c16 << "'"
        << "\nSC17 \t= " << sc17 << "\t '" << c17 << "'"
        << "\nSC18 \t= " << sc18 << "\t '" << c18 << "'"
        << "\nSC19 \t= " << sc19 << "\t '" << c19 << "'"
        << "\n" << endl;


// 3. OPERATORS
//    Supported operators:	~ & ^ | &= ^= |= == != =

#define VAL1	'1'
#define VAL2	'1'

  std_ulogic 	op1 = sc_logic(VAL1);
  std_ulogic  	op2 = sc_logic(VAL2);
  std_ulogic 	r1, r2, r3, r4, r5, r6, r7, r8, r9;
  std_ulogic 	r10, r11, r12, r13, r14, r15, r16, r17, r18, r19;
  std_ulogic 	r20, r21, r22, r23, r24, r25, r26, r27, r28, r29;
  std_ulogic 	r30, r31, r32, r33, r34, r35;

//  r1 = op1 * op2;			// Multiplication

//  r2 = op1 / op2;			// Division

//  r3 = op1 % op2;			// Modulus

//  r4 = op1 + op2;			// Addition

//  r5 = op1 - op2;			// Subtraction

//  r6 = !op1;				// Logical NOT

//  r7 = op1 && op2;			// Logical AND

//  r8 = op1 || op2;			// Logical OR

//  r9 = op1 < op2;			// Less than

//  r10 = op1 <= op2;			// Less than or equal

//  r11 = op1 > op2;			// Greater than

//  r12 = op1 >= op2;			// Greater than or equal

//  r13 = op1 += op2;			// Compound addition
//    op1 = VAL1; op2 = VAL2;

//  r14 = op1 -= op2;			// Compound subtraction
//    op1 = VAL1; op2 = VAL2;

//  r15 = op1 *= op2;			// Compound multiplication
//    op1 = VAL1; op2 = VAL2;

//  r16 = op1 /= op2;			// Compound division
//    op1 = VAL1; op2 = VAL2;

//  r17 = op1 %= op2;			// Compound modulus
//    op1 = VAL1; op2 = VAL2;

//  r18 = op1 <<= op2;			// Compound shift left
//    op1 = VAL1; op2 = VAL2;

//  r19 = op1 >>= op2;			// Compound shift right
//    op1 = VAL1; op2 = VAL2;

  r20 = op1 &= op2;			// Compound bitwise AND
    op1 = VAL1; op2 = VAL2;

  r21 = op1 ^= op2;			// Compound bitwise XOR
    op1 = VAL1; op2 = VAL2;

  r22 = op1 |= op2;			// Compound bitwise OR
    op1 = VAL1; op2 = VAL2;

//  r23 = op2++;				// Postfix increment
//    op1 = VAL1; op2 = VAL2;

//  r24 = ++op2;				// Prefix increment
//    op1 = VAL1; op2 = VAL2;

//  r25 = op2--;				// Postfix decrement
//    op1 = VAL1; op2 = VAL2;

//  r26 = --op2;				// Prefix decrement
//    op1 = VAL1; op2 = VAL2;

//  r27 = (op1 > op2) ? true : false;	// Arithmetic if
//  r28 = (op1 < op2) ? true : false;	// Arithmetic if

//  r29 = op1, r29 = op2;		 	// Comma

  r30 = ~op1;				// Bitwise NOT

//  r31 = op1 << op2;			// Left shift
//    op1 = VAL1; op2 = VAL2;

//  r32 = op1 >> op2;			// Right shift
//    op1 = VAL1; op2 = VAL2;

  r33 = op1 & op2;			// Bitwise AND

  r34 = op1 ^ op2;			// Bitwise XOR

  r35 = op1 | op2;			// Bitwise OR

  cout 	<< "op1 \t operator \t op2 \t result  [All operands are std_ulogic]"
	<< "\n----------------------------------------------------------------"
// 	<< "\n" << op1 << "\t    * \t\t " << op2 << "\t = " << r1
// 	<< "\n" << op1 << "\t    / \t\t " << op2 << "\t = " << r2
// 	<< "\n" << op1 << "\t    % \t\t " << op2 << "\t = " << r3
// 	<< "\n" << op1 << "\t    + \t\t " << op2 << "\t = " << r4
// 	<< "\n" << op1 << "\t    - \t\t " << op2 << "\t = " << r5
//  	<< "\n!(" << op1 << ") \t\t\t\t = " << r6
//  	<< "\n" << op1 << "\t    && \t\t " << op2 << "\t = " << r7
//  	<< "\n" << op1 << "\t    || \t\t " << op2 << "\t = " << r8
//  	<< "\n" << op1 << "\t    < \t\t "  << op2 << "\t = " << r9
//  	<< "\n" << op1 << "\t    <= \t\t " << op2 << "\t = " << r10
//  	<< "\n" << op1 << "\t    > \t\t "  << op2 << "\t = " << r11
//  	<< "\n" << op1 << "\t    >= \t\t " << op2 << "\t = " << r12
//  	<< "\n" << op1 << "\t    += \t\t " << op2 << "\t = " << r13
//  	<< "\n" << op1 << "\t    -= \t\t " << op2 << "\t = " << r14
//  	<< "\n" << op1 << "\t    *= \t\t " << op2 << "\t = " << r15
//  	<< "\n" << op1 << "\t    /= \t\t " << op2 << "\t = " << r16
//  	<< "\n" << op1 << "\t    %= \t\t " << op2 << "\t = " << r17
//  	<< "\n" << op1 << "\t    <<=\t\t " << op2 << "\t = " << r18
//  	<< "\n" << op1 << "\t    >>=\t\t " << op2 << "\t = " << r19
  	<< "\n" << op1 << "\t    &= \t\t " << op2 << "\t = " << r20
  	<< "\n" << op1 << "\t    ^= \t\t " << op2 << "\t = " << r21
  	<< "\n" << op1 << "\t    |= \t\t " << op2 << "\t = " << r22
//  	<< "\n" << "\t    ()++ \t " << op2 << "\t = " << r23
//  	<< "\n" << "\t    ++() \t " << op2 << "\t = " << r24
//  	<< "\n" << "\t    ()-- \t " << op2 << "\t = " << r25
//  	<< "\n" << "\t    --() \t " << op2 << "\t = " << r26
//  	<< "\n" << op1 << "\t    > ?: \t " << op2 << "\t = " << r27
//  	<< "\n" << op1 << "\t    < ?: \t " << op2 << "\t = " << r28
//  	<< "\n" << op1 << "\t    , \t\t " << op2 << "\t = " << r29
  	<< "\n~(" << op1 << ") \t\t\t\t = " << r30
//  	<< "\n" << op1 << "\t    << \t\t " << op2 << "\t = " << r31
//  	<< "\n" << op1 << "\t    >> \t\t " << op2 << "\t = " << r32
  	<< "\n" << op1 << "\t    & \t\t " << op2 << "\t = " << r33
  	<< "\n" << op1 << "\t    ^ \t\t " << op2 << "\t = " << r34
  	<< "\n" << op1 << "\t    | \t\t " << op2 << "\t = " << r35
 	<< endl;

  if (op1 == op2)			// Equality
   cout << op1 << "\t    == \t\t " << op2 << "\t -> true" << endl;
  else
   cout << op1 << "\t    == \t\t " << op2 << "\t -> false" << endl;

  if (op1 != op2)			// Inequality
   cout << op1 << "\t    != \t\t " << op2 << "\t -> true" << endl;
  else
   cout << op1 << "\t    != \t\t " << op2 << "\t -> false" << endl;

  op1 = op2 = 0;			// Assignment operator concatenation
   cout << op1 << "\t    = \t\t " << op2 << endl;

// 4. OPERATOR DEFINITIONS
//	& | ^ ~
  std_ulogic 	v1, v2, v3, v4, v5, v6, v7, v8, v9;
  std_ulogic	uu, ux, u0, u1, uz, uw, ul, uh, ud;
  std_ulogic	xu, xx, x0, x1, xz, xw, xl, xh, xd;
  std_ulogic	_0u, _0x, _00, _01, _0z, _0w, _0l, _0h, _0d;
  std_ulogic	_1u, _1x, _10, _11, _1z, _1w, _1l, _1h, _1d;
  std_ulogic	zu, zx, z0, z1, zz, zw, zl, zh, zd;
  std_ulogic	wu, wx, w0, w1, wz, ww, wl, wh, wd;
  std_ulogic	lu, lx, l0, l1, lz, lw, ll, lh, ld;
  std_ulogic	hu, hx, h0, h1, hz, hw, hl, hh, hd;
  std_ulogic	du, dx, d0, d1, dz, dw, dl, dh, dd;

  v1  = 'U';
  v2  = 'X';
  v3  = '0';
  v4  = '1';
  v5  = 'Z';
  v6  = 'W';
  v7  = 'L';
  v8  = 'H';
  v9  = '-';

  uu = v1 & v1;	   ux = v1 & v2;    u0 = v1 & v3;
  u1 = v1 & v4;	   uz = v1 & v5;    uw = v1 & v6;
  ul = v1 & v7;	   uh = v1 & v8;    ud = v1 & v9;

  xu = v2 & v1;	   xx = v2 & v2;    x0 = v2 & v3;
  x1 = v2 & v4;	   xz = v2 & v5;    xw = v2 & v6;
  xl = v2 & v7;	   xh = v2 & v8;    xd = v2 & v9;

  _0u = v3 & v1;   _0x = v3 & v2;    _00 = v3 & v3;
  _01 = v3 & v4;   _0z = v3 & v5;    _0w = v3 & v6;
  _0l = v3 & v7;   _0h = v3 & v8;    _0d = v3 & v9;

  _1u = v4 & v1;   _1x = v4 & v2;    _10 = v4 & v3;
  _11 = v4 & v4;   _1z = v4 & v5;    _1w = v4 & v6;
  _1l = v4 & v7;   _1h = v4 & v8;    _1d = v4 & v9;

  zu = v5 & v1;	   zx = v5 & v2;    z0 = v5 & v3;
  z1 = v5 & v4;	   zz = v5 & v5;    zw = v5 & v6;
  zl = v5 & v7;	   zh = v5 & v8;    zd = v5 & v9;

  wu = v6 & v1;	   wx = v6 & v2;    w0 = v6 & v3;
  w1 = v6 & v4;	   wz = v6 & v5;    ww = v6 & v6;
  wl = v6 & v7;	   wh = v6 & v8;    wd = v6 & v9;

  lu = v7 & v1;	   lx = v7 & v2;    l0 = v7 & v3;
  l1 = v7 & v4;	   lz = v7 & v5;    lw = v7 & v6;
  ll = v7 & v7;	   lh = v7 & v8;    ld = v7 & v9;

  hu = v8 & v1;	   hx = v8 & v2;    h0 = v8 & v3;
  h1 = v8 & v4;	   hz = v8 & v5;    hw = v8 & v6;
  hl = v8 & v7;	   hh = v8 & v8;    hd = v8 & v9;

  du = v9 & v1;	   dx = v9 & v2;    d0 = v9 & v3;
  d1 = v9 & v4;	   dz = v9 & v5;    dw = v9 & v6;
  dl = v9 & v7;	   dh = v9 & v8;    dd = v9 & v9;

  cout	<< "\n+-------------------------+"
       	<< "\n| AND (&) | X | 0 | 1 | Z |"
	<< "\n+-------------------------+"
  	<< "\n|    X    | " << xx << " | " << x0 << " | "
	   	            << x1 << " | " << xz << " | "
	<< "\n+-------------------------+"
  	<< "\n|    0    | " << _0x << " | " << _00 << " | "
	   	            << _01 << " | " << _0z << " | "
	<< "\n+-------------------------+"
  	<< "\n|    1    | " << _1x << " | " << _10 << " | "
	   	            << _11 << " | " << _1z << " | "
	<< "\n+-------------------------+"
  	<< "\n|    Z    | " << zx << " | " << z0 << " | "
	   	            << z1 << " | " << zz << " | "
	<< "\n+-------------------------+"
	<< endl;

  uu = v1 | v1;	   ux = v1 | v2;    u0 = v1 | v3;
  u1 = v1 | v4;	   uz = v1 | v5;    uw = v1 | v6;
  ul = v1 | v7;	   uh = v1 | v8;    ud = v1 | v9;

  xu = v2 | v1;	   xx = v2 | v2;    x0 = v2 | v3;
  x1 = v2 | v4;	   xz = v2 | v5;    xw = v2 | v6;
  xl = v2 | v7;	   xh = v2 | v8;    xd = v2 | v9;

  _0u = v3 | v1;   _0x = v3 | v2;    _00 = v3 | v3;
  _01 = v3 | v4;   _0z = v3 | v5;    _0w = v3 | v6;
  _0l = v3 | v7;   _0h = v3 | v8;    _0d = v3 | v9;

  _1u = v4 | v1;   _1x = v4 | v2;    _10 = v4 | v3;
  _11 = v4 | v4;   _1z = v4 | v5;    _1w = v4 | v6;
  _1l = v4 | v7;   _1h = v4 | v8;    _1d = v4 | v9;

  zu = v5 | v1;	   zx = v5 | v2;    z0 = v5 | v3;
  z1 = v5 | v4;	   zz = v5 | v5;    zw = v5 | v6;
  zl = v5 | v7;	   zh = v5 | v8;    zd = v5 | v9;

  wu = v6 | v1;	   wx = v6 | v2;    w0 = v6 | v3;
  w1 = v6 | v4;	   wz = v6 | v5;    ww = v6 | v6;
  wl = v6 | v7;	   wh = v6 | v8;    wd = v6 | v9;

  lu = v7 | v1;	   lx = v7 | v2;    l0 = v7 | v3;
  l1 = v7 | v4;	   lz = v7 | v5;    lw = v7 | v6;
  ll = v7 | v7;	   lh = v7 | v8;    ld = v7 | v9;

  hu = v8 | v1;	   hx = v8 | v2;    h0 = v8 | v3;
  h1 = v8 | v4;	   hz = v8 | v5;    hw = v8 | v6;
  hl = v8 | v7;	   hh = v8 | v8;    hd = v8 | v9;

  du = v9 | v1;	   dx = v9 | v2;    d0 = v9 | v3;
  d1 = v9 | v4;	   dz = v9 | v5;    dw = v9 | v6;
  dl = v9 | v7;	   dh = v9 | v8;    dd = v9 | v9;

  cout	<< "\n+-------------------------+"
       	<< "\n| OR  (|) | X | 0 | 1 | Z |"
	<< "\n+-------------------------+"
  	<< "\n|    X    | " << xx << " | " << x0 << " | "
	   	            << x1 << " | " << xz << " | "
	<< "\n+-------------------------+"
  	<< "\n|    0    | " << _0x << " | " << _00 << " | "
	   	            << _01 << " | " << _0z << " | "
	<< "\n+-------------------------+"
  	<< "\n|    1    | " << _1x << " | " << _10 << " | "
	   	            << _11 << " | " << _1z << " | "
	<< "\n+-------------------------+"
  	<< "\n|    Z    | " << zx << " | " << z0 << " | "
	   	            << z1 << " | " << zz << " | "
	<< "\n+-------------------------+"
	<< endl;

  uu = v1 ^ v1;	   ux = v1 ^ v2;    u0 = v1 ^ v3;
  u1 = v1 ^ v4;	   uz = v1 ^ v5;    uw = v1 ^ v6;
  ul = v1 ^ v7;	   uh = v1 ^ v8;    ud = v1 ^ v9;

  xu = v2 ^ v1;	   xx = v2 ^ v2;    x0 = v2 ^ v3;
  x1 = v2 ^ v4;	   xz = v2 ^ v5;    xw = v2 ^ v6;
  xl = v2 ^ v7;	   xh = v2 ^ v8;    xd = v2 ^ v9;

  _0u = v3 ^ v1;   _0x = v3 ^ v2;    _00 = v3 ^ v3;
  _01 = v3 ^ v4;   _0z = v3 ^ v5;    _0w = v3 ^ v6;
  _0l = v3 ^ v7;   _0h = v3 ^ v8;    _0d = v3 ^ v9;

  _1u = v4 ^ v1;   _1x = v4 ^ v2;    _10 = v4 ^ v3;
  _11 = v4 ^ v4;   _1z = v4 ^ v5;    _1w = v4 ^ v6;
  _1l = v4 ^ v7;   _1h = v4 ^ v8;    _1d = v4 ^ v9;

  zu = v5 ^ v1;	   zx = v5 ^ v2;    z0 = v5 ^ v3;
  z1 = v5 ^ v4;	   zz = v5 ^ v5;    zw = v5 ^ v6;
  zl = v5 ^ v7;	   zh = v5 ^ v8;    zd = v5 ^ v9;

  wu = v6 ^ v1;	   wx = v6 ^ v2;    w0 = v6 ^ v3;
  w1 = v6 ^ v4;	   wz = v6 ^ v5;    ww = v6 ^ v6;
  wl = v6 ^ v7;	   wh = v6 ^ v8;    wd = v6 ^ v9;

  lu = v7 ^ v1;	   lx = v7 ^ v2;    l0 = v7 ^ v3;
  l1 = v7 ^ v4;	   lz = v7 ^ v5;    lw = v7 ^ v6;
  ll = v7 ^ v7;	   lh = v7 ^ v8;    ld = v7 ^ v9;

  hu = v8 ^ v1;	   hx = v8 ^ v2;    h0 = v8 ^ v3;
  h1 = v8 ^ v4;	   hz = v8 ^ v5;    hw = v8 ^ v6;
  hl = v8 ^ v7;	   hh = v8 ^ v8;    hd = v8 ^ v9;

  du = v9 ^ v1;	   dx = v9 ^ v2;    d0 = v9 ^ v3;
  d1 = v9 ^ v4;	   dz = v9 ^ v5;    dw = v9 ^ v6;
  dl = v9 ^ v7;	   dh = v9 ^ v8;    dd = v9 ^ v9;

  cout	<< "\n+-------------------------+"
       	<< "\n| XOR (^) | X | 0 | 1 | Z |"
	<< "\n+-------------------------+"
  	<< "\n|    X    | " << xx << " | " << x0 << " | "
	   	            << x1 << " | " << xz << " | "
	<< "\n+-------------------------+"
  	<< "\n|    0    | " << _0x << " | " << _00 << " | "
	   	            << _01 << " | " << _0z << " | "
	<< "\n+-------------------------+"
  	<< "\n|    1    | " << _1x << " | " << _10 << " | "
	   	            << _11 << " | " << _1z << " | "
	<< "\n+-------------------------+"
  	<< "\n|    Z    | " << zx << " | " << z0 << " | "
	   	            << z1 << " | " << zz << " | "
	<< "\n+-------------------------+"
	<< endl;

  std_ulogic 	nu, nx, n0, n1, nz, nw, nl, nh, nd;

  nu = ~v1;
  nx = ~v2;
  n0 = ~v3;
  n1 = ~v4;
  nz = ~v5;
  nw = ~v6;
  nl = ~v7;
  nh = ~v8;
  nd = ~v9;

  cout	<< "\n+-------------------------+"
       	<< "\n| NOT (~) | X | 0 | 1 | Z |"
	<< "\n+-------------------------+"
  	<< "\n|         | " << nx << " | " << n0 << " | "
	   	            << n1 << " | " << nz << " | "
	<< "\n+-------------------------+"
	<< endl;
    return 0;
}