Package com.cburch.logisim.data

Examples of com.cburch.logisim.data.BitWidth$Attribute

64
65
66
67
68
69
70
71
72
73
74
75
      instance.fireInvalidated();
    }
  }
 
  private void configurePorts(Instance instance) {
    BitWidth inWidth = instance.getAttributeValue(StdAttr.WIDTH);
    int outWidth = computeOutputBits(inWidth.getWidth() - 1);

    Port[] ps = new Port[3];
    ps[0] = new Port(-20,  20, Port.OUTPUT, BitWidth.ONE);
    ps[1] = new Port(  0,   0, Port.OUTPUT, BitWidth.create(outWidth));
    ps[2] = new Port(-40,   0, Port.INPUT,  inWidth);
View Full Code Here
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
    }
  }

  private void updatePorts(Instance instance) {
    Direction facing = instance.getAttributeValue(StdAttr.FACING);
    BitWidth data = instance.getAttributeValue(StdAttr.WIDTH);
    BitWidth group = instance.getAttributeValue(GROUP_ATTR);
    int groups = (data.getWidth() + group.getWidth() - 1) / group.getWidth() - 1;
    int selectBits = 1;
    if (groups > 0) {
      while (groups != 1) { groups >>= 1; selectBits++; }
    }
    BitWidth select = BitWidth.create(selectBits);

    Location inPt;
    Location selPt;
    if (facing == Direction.WEST) {
      inPt  = Location.create(30, 0);
      selPt = Location.create(10, 10);
    } else if (facing == Direction.NORTH) {
      inPt  = Location.create(  0, 30);
      selPt = Location.create(-10, 10);
    } else if (facing == Direction.SOUTH) {
      inPt  = Location.create(  0, -30);
      selPt = Location.create(-10, -10);
    } else {
      inPt  = Location.create(-30, 0);
      selPt = Location.create(-10, 10);
    }
   
    Port[] ps = new Port[3];
    ps[0] = new Port(0, 0, Port.OUTPUT, group.getWidth());
    ps[1] = new Port(inPt.getX(), inPt.getY(), Port.INPUT, data.getWidth());
    ps[2] = new Port(selPt.getX(), selPt.getY(), Port.INPUT, select.getWidth());
    ps[0].setToolTip(Strings.getter("bitSelectorOutputTip"));
    ps[1].setToolTip(Strings.getter("bitSelectorDataTip"));
    ps[2].setToolTip(Strings.getter("bitSelectorSelectTip"));
    instance.setPorts(ps);
  }
View Full Code Here
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
  @Override
  public void propagate(InstanceState state) {
    Value data = state.getPort(1);
    Value select = state.getPort(2);
    BitWidth groupBits = state.getAttributeValue(GROUP_ATTR);
    Value group;
    if (!select.isFullyDefined()) {
      group = Value.createUnknown(groupBits);
    } else {
      int shift = select.toIntValue() * groupBits.getWidth();
      if (shift >= data.getWidth()) {
        group = Value.createKnown(groupBits, 0);
      } else if (groupBits.getWidth() == 1) {
        group = data.get(shift);
      } else {
        Value[] bits = new Value[groupBits.getWidth()];
        for (int i = 0; i < bits.length; i++) {
          if (shift + i >= data.getWidth()) {
            bits[i] = Value.FALSE;
          } else {
            bits[i] = data.get(shift + i);
View Full Code Here
63
64
65
66
67
68
69
70
71
72
73
74
75
      instance.recomputeBounds();
    }
  }
 
  private void configurePorts(Instance instance) {
    BitWidth inWidth = instance.getAttributeValue(StdAttr.WIDTH);
    int inputs = instance.getAttributeValue(NUM_INPUTS).intValue();
    int outWidth = computeOutputBits(inWidth.getWidth(), inputs);

    int y;
    int dy = 10;
    switch (inputs) {
    case 1: y = 0; break;
View Full Code Here
34
35
36
37
38
39
40
41
42
43
44
    }
  }

  @Override
  public Value getLogValue(InstanceState state, Object option) {
    BitWidth dataWidth = state.getAttributeValue(StdAttr.WIDTH);
    if (dataWidth == null) dataWidth = BitWidth.create(0);
    ShiftRegisterData data = (ShiftRegisterData) state.getData();
    if (data == null) {
      return Value.createKnown(dataWidth, 0);
    } else {
View Full Code Here
159
160
161
162
163
164
165
166
167
168
169
170
171
172
    Object onUndefined = opts.getValue(Options.ATTR_GATE_UNDEFINED);
    boolean errorIfUndefined = onUndefined.equals(Options.GATE_UNDEFINED_ERROR);
    Value repaired;
    if (errorIfUndefined) {
      int vw = v.getWidth();
      BitWidth w = state.getAttributeValue(StdAttr.WIDTH);
      int ww = w.getWidth();
      if (vw == ww && v.isFullyDefined()) return v;
      Value[] vs = new Value[w.getWidth()];
      for (int i = 0; i < vs.length; i++) {
        Value ini = i < vw ? v.get(i) : Value.ERROR;
        vs[i] = ini.isFullyDefined() ? ini : Value.ERROR;
      }
      repaired = Value.create(vs);
View Full Code Here
66
67
68
69
70
71
72
73
74
75
76
77
      configurePorts(instance);
    }
  }
 
  private void configurePorts(Instance instance) {
    BitWidth dataWid = instance.getAttributeValue(StdAttr.WIDTH);
    int data = dataWid == null ? 32 : dataWid.getWidth();
    int shift = 1;
    while ((1 << shift) < data) shift++;

    Port[] ps = new Port[3];
    ps[IN0]   = new Port(-40, -10, Port.INPUT,  data);
View Full Code Here
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
  }

  @Override
  public void propagate(InstanceState state) {
    // compute output
    BitWidth dataWidth = state.getAttributeValue(StdAttr.WIDTH);
    int bits = dataWidth == null ? 32 : dataWidth.getWidth();
    Value vx = state.getPort(IN0);
    Value vd = state.getPort(IN1);
    Value vy; // y will by x shifted by d
    if (vd.isFullyDefined() && vx.getWidth() == bits) {
      int d = vd.toIntValue();
      Object shift = state.getAttributeValue(ATTR_SHIFT);
      if (d == 0) {
        vy = vx;
      } else if (vx.isFullyDefined()) {
        int x = vx.toIntValue();
        int y;
        if (shift == SHIFT_LOGICAL_RIGHT) {
          y = x >>> d;
        } else if (shift == SHIFT_ARITHMETIC_RIGHT) {
          if (d >= bits) d = bits - 1;
          y = x >> d | ((x << (32 - bits)) >> (32 - bits + d));
        } else if (shift == SHIFT_ROLL_RIGHT) {
          if (d >= bits) d -= bits;
          y = (x >>> d) | (x << (bits - d));
        } else if (shift == SHIFT_ROLL_LEFT) {
          if (d >= bits) d -= bits;
          y = (x << d) | (x >>> (bits - d));
        } else { // SHIFT_LOGICAL_LEFT
          y = x << d;
        }
        vy = Value.createKnown(dataWidth, y);
      } else {
        Value[] x = vx.getAll();
        Value[] y = new Value[bits];
        if (shift == SHIFT_LOGICAL_RIGHT) {
          if (d >= bits) d = bits;
          System.arraycopy(x, d, y, 0, bits - d);
          Arrays.fill(y, bits - d, bits, Value.FALSE);
        } else if (shift == SHIFT_ARITHMETIC_RIGHT) {
          if (d >= bits) d = bits;
          System.arraycopy(x, d, y, 0, x.length - d);
          Arrays.fill(y, bits - d, y.length, x[bits - 1]);
        } else if (shift == SHIFT_ROLL_RIGHT) {
          if (d >= bits) d -= bits;
          System.arraycopy(x, d, y, 0, bits - d);
          System.arraycopy(x, 0, y, bits - d, d);
        } else if (shift == SHIFT_ROLL_LEFT) {
          if (d >= bits) d -= bits;
          System.arraycopy(x, x.length - d, y, 0, d);
          System.arraycopy(x, 0, y, d, bits - d);
        } else { // SHIFT_LOGICAL_LEFT
          if (d >= bits) d = bits;
          Arrays.fill(y, 0, d, Value.FALSE);
          System.arraycopy(x, 0, y, d, bits - d);
        }
        vy = Value.create(y);
      }
    } else {
      vy = Value.createError(dataWidth);
    }

    // propagate them
    int delay = dataWidth.getWidth() * (3 * Adder.PER_DELAY);
    state.setPort(OUT, vy, delay);
  }
View Full Code Here
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
 
  /** Computes the next gray value in the sequence after prev. This static
   * method just does some bit twiddling; it doesn't have much to do with
   * Logisim except that it manipulates Value and BitWidth objects. */
  static Value nextGray(Value prev) {
    BitWidth bits = prev.getBitWidth();
    if (!prev.isFullyDefined()) return Value.createError(bits);
    int x = prev.toIntValue();
    int ct = (x >> 16) ^ x; // compute parity of x
    ct = (ct >> 8) ^ ct;
    ct = (ct >> 4) ^ ct;
    ct = (ct >> 2) ^ ct;
    ct = (ct >> 1) ^ ct;
    if ((ct & 1) == 0) { // if parity is even, flip 1's bit
      x = x ^ 1;
    } else { // else flip bit just above last 1
      int y = x ^ (x & (x - 1)); // first compute the last 1
      y = (y << 1) & bits.getMask();
      x = (y == 0 ? 0 : x ^ y);
    }
    return Value.createKnown(bits, x);
  }
View Full Code Here
36
37
38
39
40
41
42
43
44
45
46
47
  /** Draws an indicator that the caret is being selected. Here, we'll draw
   * a red rectangle around the value. */
  @Override
  public void paint(InstancePainter painter) {
    Bounds bds = painter.getBounds();
    BitWidth width = painter.getAttributeValue(StdAttr.WIDTH);
    int len = (width.getWidth() + 3) / 4;

    Graphics g = painter.getGraphics();
    g.setColor(Color.RED);
    int wid = 7 * len + 2; // width of caret rectangle
    int ht = 16; // height of caret rectangle
View Full Code Here
TOP

Related Classes of com.cburch.logisim.data.BitWidth$Attribute

  • codec.asn1.ASN1ObjectIdentifier
  • codec.asn1.ASN1Set
  • codec.asn1.ASN1SetOf
  • codec.pkcs7.Signer
  • codec.pkcs9.Attributes
  • com.ardor3d.extension.model.collada.jdom.ColladaAnimUtils
  • com.cburch.gray.CounterPoker
  • com.cburch.gray.GrayCounter
  • com.cburch.gray.GrayIncrementer
  • com.cburch.logisim.circuit.CircuitPoints
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.