hades.models.ttl74
Class SN7400

java.lang.Object
  hades.simulator.SimObject
      hades.models.ttl74.SN7400

All Implemented Interfaces:

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

Direct Known Subclasses:

SN7400_pinout, SN7408_pinout, SN7432_pinout, SN7486_pinout

public class SN7400

extends SimObject

implements Simulatable

SN7400 - a subclass of SimObject that models a standard SN7400 NAND*4 gate. Signals are expected to be StdLogic1164 objects.

See Also:

Serialized Form

Field Summary

protected Port	port_A1
protected Port	port_A2
protected Port	port_A3
protected Port	port_A4
protected Port	port_B1
protected Port	port_B2
protected Port	port_B3
protected Port	port_B4
protected Port	port_GND
protected Port	port_VCC
protected Port	port_Y1
protected Port	port_Y2
protected Port	port_Y3
protected Port	port_Y4
(package private) static double	t_delay
protected StdLogic1164	value_0
protected StdLogic1164	value_1
protected StdLogic1164	value_U
protected StdLogic1164	value_X

Fields inherited from class hades.simulator.SimObject

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

Constructor Summary

SN7400()

Method Summary

void	elaborate(java.lang.Object arg) elaborate(): This method is called by the simulation engine to initialize the simulation object.
void	evaluate(java.lang.Object arg) evaluate(): extract the active Port from the SimEvent argument and calculate the new NAND output.
StdLogic1164	getValueOrU(Port p)
void	schedule(Port port_Y, Port port_A, Port port_B, double time)
void	schedule(Port target, StdLogic1164 value, double time)
java.lang.String	toString() toString() - the usual info method

Methods inherited from class hades.simulator.SimObject

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

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

port_A1

protected Port port_A1

port_B1

protected Port port_B1

port_Y1

protected Port port_Y1

port_A2

protected Port port_A2

port_B2

protected Port port_B2

port_Y2

protected Port port_Y2

port_A3

protected Port port_A3

port_B3

protected Port port_B3

port_Y3

protected Port port_Y3

port_A4

protected Port port_A4

port_B4

protected Port port_B4

port_Y4

protected Port port_Y4

port_GND

protected Port port_GND

port_VCC

protected Port port_VCC

value_0

protected StdLogic1164 value_0

value_1

protected StdLogic1164 value_1

value_X

protected StdLogic1164 value_X

value_U

protected StdLogic1164 value_U

t_delay

static double t_delay

Constructor Detail

SN7400

public SN7400()

Method Detail

elaborate

public void elaborate(java.lang.Object arg)

elaborate(): This method is called by the simulation engine to initialize the simulation object. We schedule "U" values on all four outputs Y1, Y2, Y3, Y4 at time t=0.0 seconds.

Specified by:

elaborate in interface Simulatable

Overrides:

elaborate in class SimObject

evaluate

public void evaluate(java.lang.Object arg)

evaluate(): extract the active Port from the SimEvent argument and calculate the new NAND output.

Specified by:

evaluate in interface Simulatable

Overrides:

evaluate in class SimObject

Parameters:

arg - an arbitrary object argument

schedule

public void schedule(Port port_Y,
                     Port port_A,
                     Port port_B,
                     double time)

schedule

public void schedule(Port target,
                     StdLogic1164 value,
                     double time)

getValueOrU

public StdLogic1164 getValueOrU(Port p)

toString

public java.lang.String toString()

toString() - the usual info method

Overrides:

toString in class SimObject