hades.models.flipflops
Class Latch

java.lang.Object
  hades.simulator.SimObject
      hades.models.flipflops.GenericFlipflop
          hades.models.flipflops.Latch

All Implemented Interfaces:

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

public class Latch

extends GenericFlipflop

implements Simulatable, java.io.Serializable

Latch: a level-sensitive D-latch. Signals are expected to be StdLogic1164 objects.

See Also:

Serialized Form

Field Summary

Fields inherited from class hades.models.flipflops.GenericFlipflop

port_NQ, port_Q, t_hold, t_pass, t_setup

Fields inherited from class hades.simulator.SimObject

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

Constructor Summary

Latch()

Method Summary

void	evaluate(java.lang.Object arg) evaluate: check D and C and calculate Q and NQ.

Methods inherited from class hades.models.flipflops.GenericFlipflop

assign, configure, elaborate, getDelay, getHoldTime, getSetupTime, getToolTip, initialize, scheduleEvent, scheduleEventAfter, scheduleOutputValue, scheduleOutputValueAfter, setDelay, setDelay, setHoldTime, setHoldTime, setSetupTime, setSetupTime, write

Methods inherited from class hades.simulator.SimObject

constructDynamicSymbol, copy, 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

elaborate, message

Constructor Detail

Latch

public Latch()

Method Detail

evaluate

public void evaluate(java.lang.Object arg)

evaluate: check D and C and calculate Q and NQ. If either D or C are undefined or a timing-violation is detected, the latch state and Q/NQ outputs are set to 'X'.

Specified by:

evaluate in interface Simulatable

Overrides:

evaluate in class SimObject

Parameters:

arg - an arbitrary object argument