hades.models.rtlib.register
Class LFSR

java.lang.Object
  hades.simulator.SimObject
      hades.models.rtlib.GenericRtlibObject
          hades.models.rtlib.register.LFSR

All Implemented Interfaces:

Assignable, java.lang.Cloneable, ContextToolTip, java.io.Serializable, Simulatable, Wakeable

public class LFSR

extends GenericRtlibObject

implements Assignable

LFSR - an edge-triggered 1..32-bit output LFSR register based on the (31 3 0) polynom. Signals are expected to be of type SignalStdLogicVector for D and Q, and SignalStdLogic1164 for CLK and NR(eset).

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class hades.models.rtlib.GenericRtlibObject

GenericRtlibObject.BinaryValueLabelFormatter, GenericRtlibObject.DecimalValueLabelFormatter, GenericRtlibObject.DINColorSource, GenericRtlibObject.FlexibleLabelFormatter, GenericRtlibObject.HexValueLabelFormatter

Field Summary

protected LFSR32	lfsr
protected PortStdLogic1164	port_CLK
protected PortStdLogic1164	port_NR
protected PortStdLogicVector	port_Q
protected int	seed
protected double	t_setup

Fields inherited from class hades.models.rtlib.GenericRtlibObject

BINARY, DECIMAL, defaultdelay, delay, enableAnimationFlag, HEX, labelFormatter, n_bits, valueLabel, vector, vector_000, vector_111, vector_UUU, vector_XXX, vector_ZZZ, vectorOutputPort

Fields inherited from class hades.simulator.SimObject

classloader, console, debug, editor, name, parent, ports, propertySheet, simulator, symbol, versionId, visible

Constructor Summary

LFSR()

Method Summary

void	configure() create and display a 'ConfigDialog' to set the parameters for a SimObject.
void	constructPorts()
void	elaborate(java.lang.Object arg) elaborate(): This method is called by the simulation engine to initialize this RTLIB object for simulation.
void	evaluate(java.lang.Object arg) evaluate(): called by the simulation engine on all events that concern this object.
long	getLFSRValue()
int	getSeed()
boolean	initialize(java.lang.String s) initialize a RTLIB object from a String which contains the integer version id, the width of this vector, and optionally a String of the desired start value (e.g.
void	setSeed(int _seed)
void	setSeed(java.lang.String s)
void	setValue(long _value)
void	setValue(java.lang.String s)
void	setWidth(int _n)
void	write(java.io.PrintWriter ps) write the following data to PrintWriter ps: our versionId, the width (n_bits), the default output value (vector), the default delay, and the default seed Hopefully, many RTLIB classes won't need to override write().

Methods inherited from class hades.models.rtlib.GenericRtlibObject

assign, constructStandardValues, copy, getDelay, getEnableAnimationFlag, getFormattedValue, getNumberFormat, getToolTip, getValue, getWidth, initValueLabel, isConnected, scheduleAfter, scheduleAfter, scheduleVectorOutputPort, setDelay, setDelay, setEnableAnimationFlag, setEnableAnimationFlag, setFormattedValue, setNumberFormat, setNumberFormat, setSymbol, setWidth, toString, updateSymbol, wakeup, wakeupAfter

Methods inherited from class hades.simulator.SimObject

constructDynamicSymbol, getBindkey, getClassLoader, getDebug, getEditor, getExternalResources, getFullName, getName, getParent, getPort, getPorts, getPropertySheet, getResourceAsStream, getSimulator, getSymbol, getSymbolResourceName, getVersionId, isVisible, keyPressed, message, mousePressed, needsDynamicSymbol, needsExternalResources, setClassLoader, setConsole, setDebug, setEditor, setName, setParent, setPorts, setSimulator, setVersionId, setVisible, tearDown

Methods inherited from class java.lang.Object

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

Methods inherited from interface hades.simulator.Assignable

assign

Methods inherited from interface hades.simulator.Simulatable

message

Field Detail

port_Q

protected PortStdLogicVector port_Q

port_CLK

protected PortStdLogic1164 port_CLK

port_NR

protected PortStdLogic1164 port_NR

t_setup

protected double t_setup

lfsr

protected LFSR32 lfsr

seed

protected int seed

Constructor Detail

LFSR

public LFSR()

Method Detail

setWidth

public void setWidth(int _n)

Overrides:

setWidth in class GenericRtlibObject

getSeed

public int getSeed()

setSeed

public void setSeed(int _seed)

setSeed

public void setSeed(java.lang.String s)

constructPorts

public void constructPorts()

Overrides:

constructPorts in class GenericRtlibObject

setValue

public void setValue(long _value)

Overrides:

setValue in class GenericRtlibObject

setValue

public void setValue(java.lang.String s)

Overrides:

setValue in class GenericRtlibObject

getLFSRValue

public long getLFSRValue()

elaborate

public void elaborate(java.lang.Object arg)

elaborate(): This method is called by the simulation engine to initialize this RTLIB object for simulation.

GenericRtlibObject just calls updateSymbol() to initialize its graphical representation. Probably, most RTLIB classes won't need to override this method.

Specified by:

elaborate in interface Simulatable

Overrides:

elaborate in class GenericRtlibObject

evaluate

public void evaluate(java.lang.Object arg)

Description copied from interface: Simulatable

evaluate(): called by the simulation engine on all events that concern this object. The object is responsible for updating its internal state and for scheduling all pending output events.

Specified by:

evaluate in interface Simulatable

Overrides:

evaluate in class SimObject

Parameters:

arg - an arbitrary object argument

write

public void write(java.io.PrintWriter ps)

write the following data to PrintWriter ps: our versionId, the width (n_bits), the default output value (vector), the default delay, and the default seed Hopefully, many RTLIB classes won't need to override write().

Overrides:

write in class GenericRtlibObject

initialize

public boolean initialize(java.lang.String s)

Description copied from class: GenericRtlibObject

initialize a RTLIB object from a String which contains the integer version id, the width of this vector, and optionally a String of the desired start value (e.g. "1001 8 01ZXW001" for an 8 bit vector), and optionally the default delay.

Overrides:

initialize in class GenericRtlibObject

configure

public void configure()

Description copied from class: SimObject

create and display a 'ConfigDialog' to set the parameters for a SimObject. The default ConfigDialog for the base class (SimObject) itself is empty except for the 'instance name' of the SimObject.

Overrides:

configure in class GenericRtlibObject