jaga.pj.circuits.fpgaft
Class SimulatorLUT

java.lang.Object
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  +--jaga.pj.circuits.SimulatorLogicElement
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        +--jaga.pj.circuits.SimulatorDelayLE
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              +--jaga.pj.circuits.fpgaft.SimulatorFaultyDelayLE
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                    +--jaga.pj.circuits.fpgaft.SimulatorLUT

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

public class SimulatorLUT

extends SimulatorFaultyDelayLE

Faulty Logic Element with delay implementing a Lookup-Table of configurable inputs.

When cloning one of these, the same lookup table table object will be pointed at by the original and the clone. This is OK unless tables are likely to get modified during the object's lifetime. The getClone() method should be overriden if this is unacceptable.

See Also:

Serialized Form

Field Summary

boolean	isLut2
static int	PRINT_DESCRIPTION
static int	PRINT_TABLE
boolean[]	table

Fields inherited from class jaga.pj.circuits.fpgaft.SimulatorFaultyDelayLE

SSA, SSAV

Fields inherited from class jaga.pj.circuits.SimulatorDelayLE

delay, delayLeft, nextOutput

Fields inherited from class jaga.pj.circuits.SimulatorLogicElement

currentOutput

Constructor Summary

SimulatorLUT(BitSet table, int delay)
Creates new SimulatorLUT from a BitSet representing the results of the LUT in ascending order having the last input as the lowest significant element in the table composition.

SimulatorLUT(boolean[] table, int delay)

Method Summary

void	sampleInputs() Copied from SimulatorDelayLE, coudl have put in here and declared final..
static void	setMode(int mode)
java.lang.String	toString()

Methods inherited from class jaga.pj.circuits.fpgaft.SimulatorFaultyDelayLE

getNow, setFault

Methods inherited from class jaga.pj.circuits.SimulatorDelayLE

connect, getInput, getInputs, randomReset, refreshOutput, reset, setNow

Methods inherited from class jaga.pj.circuits.SimulatorLogicElement

getClone, setRandomSeed

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

PRINT_TABLE

public static final int PRINT_TABLE

PRINT_DESCRIPTION

public static final int PRINT_DESCRIPTION

table

public boolean[] table

isLut2

public boolean isLut2

Constructor Detail

SimulatorLUT

public SimulatorLUT(BitSet table,
                    int delay)

Creates new SimulatorLUT from a BitSet representing the results of the LUT in ascending order having the last input as the lowest significant element in the table composition. Eg: if we have

I0 I1 F

0 0 0

0 1 1

1 0 0

1 1 1

then we initiliaze with new BitSet( "0101" )

So the input with largest index in the input array is the least significant bit when calculating the line in the lookup table. Similar to Little Endian. IE. The string formed by the concatenation of input values with I0 on the left and I(n-1) on the right is a binary encoding of the line number where the output value for this input combination is to be found in the table.

Parameters:

table - BitSet representing the results of the LUT in ascending order. Its length must be power of two.

SimulatorLUT

public SimulatorLUT(boolean[] table,
                    int delay)

Method Detail

sampleInputs

public final void sampleInputs()

Copied from SimulatorDelayLE, coudl have put in here and declared final..

Overrides:

sampleInputs in class SimulatorDelayLE

setMode

public static void setMode(int mode)

toString

public java.lang.String toString()

Overrides:

toString in class SimulatorDelayLE