engine
Class Trireg

java.lang.Object
  |
  +--engine.Assignable
        |
        +--engine.DataHolder
              |
              +--engine.BitVector
                    |
                    +--engine.Wire
                          |
                          +--engine.Trireg

class Trireg

extends Wire

implements Executable

This is the class for the trireg net construct (also known as tri).

See Also:

WireDescription., Serialized Form

Field Summary

(package private) byte	notDrivStrength The strength when not in driven state
(package private) int	storeTime The amount of time the last value will be stored
(package private) int[]	timeTillOff The counters for turn-off delay
(package private) long	updateTime Holds the last scheduled update time

Fields inherited from class engine.Wire

delays, desc, expandType, ns, strength, truthTable, type

Fields inherited from class engine.BitVector

abgCond, ands, b0, b1, increment, lsb, msb, n, nands, negedge, nors, nots, ors, posedge, signed, vtable16, vtable8, X, xnors, xors, Z

Fields inherited from class engine.DataHolder

monitors

Fields inherited from class engine.Assignable

data, initValDefaults, lookupTables, lookupTableSupply0, lookupTableSupply1, lookupTableTri0, lookupTableTri1, lookupTableWand, lookupTableWire, lookupTableWor, typeSupply0, typeSupply1, typeTri0, typeTri1, typeTrireg, typeWand, typeWire, typeWor, X, Z

Constructor Summary

(package private)

Trireg(NameSpace ns, WireDescription desc, int type, int nStart, int nEnd, int expandType, byte noDrivStrength, Delay3 delays)

Method Summary

(package private) void	attrib(BitVector b, byte[] strengths) A Strengths - aware version of attrib Note that it assumes the values are obtained from a compute, and so they are correct - no checks are made here.
(package private) java.lang.Object[]	compute() The improved version here is strength - aware
int	computeTransitionDelayFor(BitVector b)
static int	computeTransitionDelayFor(BitVector before, BitVector after, Delay3 delays) Returns the delay for the transition from the current value (before) to a given one (after).
void	execute() Checks to see if any bit timeout has expired, and if so, make it X

Methods inherited from class engine.Wire

attrib, getStrength, getType, getValAndStrength, initToDefaults

Methods inherited from class engine.BitVector

add, and, attrib, attrib, attrib, attrib, b0, b1, bAnd, bAndR, bitsToLong, bNAnd, bNAndR, bNOr, bNOrR, bNot, bNXor, bNXOrR, bOr, bOrR, bX, bXor, bXOrR, bZ, cEq, clone, cNEq, combineFAbgCond, compare, div, duplicate, ensureBitCapacity, ensureCapacity, equals, expand0, expandS, ge, genericReduction, genericReduction1, getb, getb0, getb1, getBit, getBits, getBool, getInt, getLong, getReal, getSign, gt, isDefined, isNull, isTrue, isX, isZ, le, length, lEq, lNEq, lNot, lt, mod, mul, neg, not, or, reduce, reverse, setb, setb0, setb1, setBit, setLength, shl, shl, shr, sub, toString, toString, trunc, value, xor

Methods inherited from class engine.DataHolder

addMonitor, getWatchMonitor, hasMonitor, notifyMonitors, removeMonitor

Methods inherited from class engine.Assignable

addAssignement, removeAssignement

Methods inherited from class java.lang.Object

, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, wait, wait, wait

Field Detail

notDrivStrength

byte notDrivStrength

The strength when not in driven state

timeTillOff

int[] timeTillOff

The counters for turn-off delay

storeTime

int storeTime

The amount of time the last value will be stored

updateTime

long updateTime

Holds the last scheduled update time

Constructor Detail

Trireg

Trireg(NameSpace ns,
       WireDescription desc,
       int type,
       int nStart,
       int nEnd,
       int expandType,
       byte noDrivStrength,
       Delay3 delays)

Method Detail

computeTransitionDelayFor

public int computeTransitionDelayFor(BitVector b)

Overrides:

computeTransitionDelayFor in class Wire

computeTransitionDelayFor

public static int computeTransitionDelayFor(BitVector before,
                                            BitVector after,
                                            Delay3 delays)

Returns the delay for the transition from the current value (before) to a given one (after).

compute

java.lang.Object[] compute()
                     throws InterpretTimeException

The improved version here is strength - aware

Overrides:

compute in class Wire

attrib

void attrib(BitVector b,
            byte[] strengths)
      throws InterpretTimeException

A Strengths - aware version of attrib Note that it assumes the values are obtained from a compute, and so they are correct - no checks are made here.

execute

public void execute()
             throws InterpretTimeException

Checks to see if any bit timeout has expired, and if so, make it X

Specified by:

execute in interface Executable