hades.models.register
Class CounterRE

java.lang.Object
  hades.simulator.SimObject
      hades.models.gates.GenericGate
          hades.models.register.CounterRE

All Implemented Interfaces:

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

Direct Known Subclasses:

CounterRE16, CounterRE8

public class CounterRE

extends GenericGate

implements Simulatable

CounterRE: abstract base class for n-bit positive-edge triggered counters with enable and reset. The maximum value of the counter is also user-settable. Subclasses output some of the (lower) bits of the counter to ports.

See Also:

Serialized Form

Field Summary

protected int	n_outputs
protected PortStdLogic1164	port_CLK
protected PortStdLogic1164	port_COUT
protected PortStdLogic1164	port_ENABLE
protected PortStdLogic1164	port_NRESET

Fields inherited from class hades.models.gates.GenericGate

t_delay

Fields inherited from class hades.simulator.SimObject

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

Constructor Summary

CounterRE(int n_outputs)

Method Summary

void	configure() create and display a 'ConfigDialog' to set the parameters for a SimObject.
SimObject	copy() create a copy of this counter register with the same "limit" value and an initial counter value of "0".
void	elaborate(java.lang.Object arg) on elaboration, set the initial value of the counter.
void	evaluate(java.lang.Object arg) evaluate: on a rising-edge of the CLK input calculate a new shift-register value, and put the lower bits of the new value on the Q outputs.
int	getLimit()
java.lang.String	getToolTip(java.awt.Point position, long millis) construct a (short) tool tip message for a logic gate with name, class name, and gate delay.
int	getValue()
boolean	initialize(java.lang.String s) initialize the counter from a String that contains the integer version id of this register, the propagation delay (in seconds), and the current "value" and maximum "limit" counter values.
void	setLimit(int limit)
void	setLimit(java.lang.String s)
void	setValue(int value)
void	setValue(java.lang.String s)
void	write(java.io.PrintWriter ps) write "versionId", gate delay "t_delay", current counter "value" and maximum counter value "limit".

Methods inherited from class hades.models.gates.GenericGate

getDelay, scheduleEvent, scheduleEventAfter, scheduleOutputValue, scheduleOutputValueAfter, setDelay, setDelay

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, setSymbol, setVersionId, setVisible, tearDown, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface hades.simulator.Simulatable

message

Field Detail

n_outputs

protected int n_outputs

port_CLK

protected PortStdLogic1164 port_CLK

port_NRESET

protected PortStdLogic1164 port_NRESET

port_ENABLE

protected PortStdLogic1164 port_ENABLE

port_COUT

protected PortStdLogic1164 port_COUT

Constructor Detail

CounterRE

public CounterRE(int n_outputs)

Method Detail

elaborate

public void elaborate(java.lang.Object arg)

on elaboration, set the initial value of the counter.

Specified by:

elaborate in interface Simulatable

Overrides:

elaborate in class GenericGate

evaluate

public void evaluate(java.lang.Object arg)

evaluate: on a rising-edge of the CLK input calculate a new shift-register value, and put the lower bits of the new value on the Q outputs.

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 "versionId", gate delay "t_delay", current counter "value" and maximum counter value "limit".

Overrides:

write in class GenericGate

initialize

public boolean initialize(java.lang.String s)

initialize the counter from a String that contains the integer version id of this register, the propagation delay (in seconds), and the current "value" and maximum "limit" counter values. '1001 0.5E-8 0 255'

Overrides:

initialize in class GenericGate

getValue

public int getValue()

setValue

public void setValue(java.lang.String s)

setValue

public void setValue(int value)

getLimit

public int getLimit()

setLimit

public void setLimit(java.lang.String s)

setLimit

public void setLimit(int limit)

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 GenericGate

getToolTip

public java.lang.String getToolTip(java.awt.Point position,
                                   long millis)

Description copied from class: GenericGate

construct a (short) tool tip message for a logic gate with name, class name, and gate delay.

Specified by:

getToolTip in interface ContextToolTip

Overrides:

getToolTip in class GenericGate

copy

public SimObject copy()

create a copy of this counter register with the same "limit" value and an initial counter value of "0".

Overrides:

copy in class GenericGate