Examples with BitWidth com.cburch.logisim.data.BitWidth used on opensource projects

Example 61 with BitWidth

use of com.cburch.logisim.data.BitWidth in project logisim-evolution by reds-heig.

the class Buffer method repair.

// 
// static methods - shared with other classes
// 
static Value repair(InstanceState state, Value v) {
    AttributeSet opts = state.getProject().getOptions().getAttributeSet();
    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);
    } else {
        repaired = v;
    }
    Object outType = state.getAttributeValue(GateAttributes.ATTR_OUTPUT);
    return AbstractGate.pullOutput(repaired, outType);
}

Example 62 with BitWidth

use of com.cburch.logisim.data.BitWidth in project logisim-evolution by reds-heig.

the class Comparator method propagate.

@Override
public void propagate(InstanceState state) {
    // get attributes
    BitWidth dataWidth = state.getAttributeValue(StdAttr.WIDTH);
    // compute outputs
    Value gt = Value.FALSE;
    Value eq = Value.TRUE;
    Value lt = Value.FALSE;
    Value a = state.getPortValue(IN0);
    Value b = state.getPortValue(IN1);
    Value[] ax = a.getAll();
    Value[] bx = b.getAll();
    int maxlen = Math.max(ax.length, bx.length);
    for (int pos = maxlen - 1; pos >= 0; pos--) {
        Value ab = pos < ax.length ? ax[pos] : Value.ERROR;
        Value bb = pos < bx.length ? bx[pos] : Value.ERROR;
        if (pos == ax.length - 1 && ab != bb) {
            Object mode = state.getAttributeValue(MODE_ATTRIBUTE);
            if (mode != UNSIGNED_OPTION) {
                Value t = ab;
                ab = bb;
                bb = t;
            }
        }
        if (ab == Value.ERROR || bb == Value.ERROR) {
            gt = Value.ERROR;
            eq = Value.ERROR;
            lt = Value.ERROR;
            break;
        } else if (ab == Value.UNKNOWN || bb == Value.UNKNOWN) {
            gt = Value.UNKNOWN;
            eq = Value.UNKNOWN;
            lt = Value.UNKNOWN;
            break;
        } else if (ab != bb) {
            eq = Value.FALSE;
            if (ab == Value.TRUE)
                gt = Value.TRUE;
            else
                lt = Value.TRUE;
            break;
        }
    }
    // propagate them
    int delay = (dataWidth.getWidth() + 2) * Adder.PER_DELAY;
    state.setPort(GT, gt, delay);
    state.setPort(EQ, eq, delay);
    state.setPort(LT, lt, delay);
}

Example 63 with BitWidth

use of com.cburch.logisim.data.BitWidth in project logisim-evolution by reds-heig.

the class Divider method propagate.

@Override
public void propagate(InstanceState state) {
    // get attributes
    BitWidth dataWidth = state.getAttributeValue(StdAttr.WIDTH);
    // compute outputs
    Value a = state.getPortValue(IN0);
    Value b = state.getPortValue(IN1);
    Value upper = state.getPortValue(UPPER);
    Value[] outs = Divider.computeResult(dataWidth, a, b, upper);
    // propagate them
    int delay = dataWidth.getWidth() * (dataWidth.getWidth() + 2) * PER_DELAY;
    state.setPort(OUT, outs[0], delay);
    state.setPort(REM, outs[1], delay);
}

Example 64 with BitWidth

use of com.cburch.logisim.data.BitWidth in project logisim-evolution by reds-heig.

the class Negator method propagate.

@Override
public void propagate(InstanceState state) {
    // get attributes
    BitWidth dataWidth = state.getAttributeValue(StdAttr.WIDTH);
    // compute outputs
    Value in = state.getPortValue(IN);
    Value out;
    if (in.isFullyDefined()) {
        out = Value.createKnown(in.getBitWidth(), -in.toIntValue());
    } else {
        Value[] bits = in.getAll();
        Value fill = Value.FALSE;
        int pos = 0;
        while (pos < bits.length) {
            if (bits[pos] == Value.FALSE) {
                bits[pos] = fill;
            } else if (bits[pos] == Value.TRUE) {
                if (fill != Value.FALSE)
                    bits[pos] = fill;
                pos++;
                break;
            } else if (bits[pos] == Value.ERROR) {
                fill = Value.ERROR;
            } else {
                if (fill == Value.FALSE)
                    fill = bits[pos];
                else
                    bits[pos] = fill;
            }
            pos++;
        }
        while (pos < bits.length) {
            if (bits[pos] == Value.TRUE) {
                bits[pos] = Value.FALSE;
            } else if (bits[pos] == Value.FALSE) {
                bits[pos] = Value.TRUE;
            }
            pos++;
        }
        out = Value.create(bits);
    }
    // propagate them
    int delay = (dataWidth.getWidth() + 2) * Adder.PER_DELAY;
    state.setPort(OUT, out, delay);
}

Example 65 with BitWidth

use of com.cburch.logisim.data.BitWidth in project logisim-evolution by reds-heig.

the class Shifter method configurePorts.

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);
    ps[IN1] = new Port(-40, 10, Port.INPUT, shift);
    ps[OUT] = new Port(0, 0, Port.OUTPUT, data);
    ps[IN0].setToolTip(Strings.getter("shifterInputTip"));
    ps[IN1].setToolTip(Strings.getter("shifterDistanceTip"));
    ps[OUT].setToolTip(Strings.getter("shifterOutputTip"));
    instance.setPorts(ps);
}