byucc.jhdl.Xilinx.Virtex2
Class opad

java.lang.Object
  byucc.jhdl.base.Nameable
      byucc.jhdl.base.Node
          byucc.jhdl.base.Cell
              byucc.jhdl.base.VisibleAnnotation
                  byucc.jhdl.Xilinx.Virtex2.opad

All Implemented Interfaces:

BooleanFlags, IOPad, PreDefinedSchematic, TreeListable, UndrivenInputsAllowable

Deprecated. ipads are not necessary. All that is necessary is an obuf, with the input wire assigned to the perscribed pin.

public final class opad

extends VisibleAnnotation

implements UndrivenInputsAllowable, IOPad, PreDefinedSchematic

OPAD is a single output pad. An OPAD connects a device pin to an output signal of the FPGA. It is internally connected to an input / output block (IOB), which is configured by the XACT software as an OBUF, and OBUFT, an OBUFE, and OFD, or an OFDT. (Source: XACT Libraries Guide, pg. 3-384, Xilinx Corporation, 1994.)

Field Summary

static CellInterface[]	cell_interface Deprecated. The port interface for: opad opad : in (1)
static java.lang.String	cellname Deprecated. The static cellname (netlist reference name) for opad

Fields inherited from class byucc.jhdl.base.Cell

BOOLEAN, CELL_NAME_DECLARATION, CellInterfaceDeterminesUniqueNetlistStructure, DETERMINE_FROM_STRING, GENERICS_DECLARATION, implicit_interface, IMPLICIT_INTERFACE_DECLARATION, INTEGER, INTERFACE_DECLARATION, LONG, PORT_IOS_DECLARATION, PORT_NAMES_DECLARATION, PORT_NET_NAMES_DECLARATION, PORT_PROPERTIES, PORT_WIDTHS_DECLARATION, SIGN_EXT, STRING, ZERO_PAD

Fields inherited from interface byucc.jhdl.apps.Viewers.Schematic.PreDefinedSchematic

PreDefinedSchematic_ADD, PreDefinedSchematic_ADDSUB, PreDefinedSchematic_AND, PreDefinedSchematic_BUF, PreDefinedSchematic_CONST, PreDefinedSchematic_GEN, PreDefinedSchematic_GND, PreDefinedSchematic_INC, PreDefinedSchematic_INV, PreDefinedSchematic_MUX, PreDefinedSchematic_NAND, PreDefinedSchematic_NOR, PreDefinedSchematic_OR, PreDefinedSchematic_PULLDOWN, PreDefinedSchematic_PULLUP, PreDefinedSchematic_REG, PreDefinedSchematic_SHL, PreDefinedSchematic_SHR, PreDefinedSchematic_TBUF, PreDefinedSchematic_VCC, PreDefinedSchematic_XNOR, PreDefinedSchematic_XOR

Fields inherited from interface byucc.jhdl.base.BooleanFlags

ANTECEDANT_IS_BEHAVIORALLY_MODELED, ASYNC_PORT, ASYNCHRONOUS_RESOLVED, ATOMICALLY_PLACEABLE, ATOMICALLY_UNMAPPABLE, BEHAVIORALLY_MODELED_BRANCH, CLK_PORT, CLOCK_METHOD_IMPLEMENTED_BY_USER, CLOCK_METHOD_IS_DISABLED, CLOCKABLE_IS_SCHEDULED, DANGLING_IS_OK, DELETE_MARK, FATAL_BUILD_ERROR_OCCURED, HAS_BEEN_TRACED, HAS_USER_SPECIFIED_NAME, HWUPDATE, IMPLICIT_PORT, IN_CLK_PORT, IN_PORT, INOUT_PORT, IO_TYPE_FLAGS, IS_BEHAVIORALLY_MODELED, IS_ON_BUILD_STACK, IS_ON_PROP_LIST, IS_PLACED, METHODS_IMPLEMENTED_BY_USER, NETLISTABLE, ORIG_WIRE_IS_ATOMIC, OUT_PORT, PLACEMENT_IS_LOCKED, PROPAGATE_METHOD_IMPLEMENTED_BY_USER, PROPAGATE_METHOD_IS_DISABLED, RECURSION_FLAG, RESET_METHOD_IMPLEMENTED_BY_USER, SIMULATEABLE, SOURCELESS_IS_OK, SYNC_PORT, VISIBLE

Constructor Summary

protected	opad(Node parent) Deprecated. Used only by child classes to pass up the parent cell.
	opad(Node parent, ArgBlockList abl) Deprecated. Constructs a new opad, connecting its ports as given by the String-Wire pairs in the ArgBlockList.
protected	opad(Node parent, java.lang.String name) Deprecated. Used only by child classes to pass up the parent cell and instance name.
	opad(Node parent, java.lang.String instanceName, ArgBlockList abl) Deprecated. Constructs a new opad, connecting its ports as given by the String-Wire pairs in the ArgBlockList.
	opad(Node parent, java.lang.String instanceName, java.lang.String s0, Wire w0) Deprecated. Constructs a new opad, connecting each Wire to the port whose name is given by the accompanying String parameter The initial String parameter specifies the instance name.
	opad(Node parent, java.lang.String instanceName, Wire opad) Deprecated. Constructs a new opad.
	opad(Node parent, Wire opad) Deprecated. Constructs a new opad.

Method Summary

boolean	cellInterfaceDeterminesUniqueNetlistStructure() Deprecated. When false, the default behavior of this method, each cell will list itself separately in a netlist, guaranteeing that the netlist will not have invalid data at the expense of a larger file-size.
java.lang.String	getCellName() Deprecated. Access the cell name associated with a derived class.
static void	main(java.lang.String[] argv) Deprecated.
boolean	portMayBeUndriven(java.lang.String portname) Deprecated. This method will be called when JHDL detects an undriven input port.
static void	test() Deprecated.
int	type() Deprecated. This method returns one of the predefined schematic constants to identify the type of this cell.

Methods inherited from class byucc.jhdl.base.VisibleAnnotation

hasBehaviorInClockMethod, hasBehaviorInPropagateMethod, needsToBeAsynchronouslyScheduled

Methods inherited from class byucc.jhdl.base.Cell

addPort, addPorts, addProperties, addProperties, addProperty, addProperty, addProperty, addProperty, antecedantIsBehaviorallyModeled, antecedantIsBehaviorallyModeled, behavioralModelIsAvailable, bind, bind, bind, bind, clk, connect, connectAllWires, connectOptional, constructSubCell, constructSubCellNoImplicitPorts, defaultSimulationModelIsBehavioral, disableAllBehavioralModels, disableBehavioralModel, enableBehavioralModel, getArgument, getAttachedPort, getAttachedWire, getAttachedWireNoException, getCellNetlist, getCellNetList, getCellNetlist, getCellNetlist, getDescendents, getFlatNetlist, getFlatNetlistableChildren, getGeneric, getHeight, getNetlistableChildren, getPlacementInfo, getPortProperties, getPortRecord, getPortRecords, getProperties, getProperty, getPropertyValue, getSinkWires, getSourceWires, getSubCellClass, getUniqueCellName, getWidth, getX, getY, hasBeenTraced, hasBeenTraced, hasPort, hasPorts, in, in, inout, inout, isAsynchronouslyScheduled, isAsynchronouslyScheduled, isAsynchronousSourceSinkResolved, isBehaviorallyModeled, isBehaviorallyModeledBranch, isInput, isLeafCell, isNetlistable, isNetlistable, isNetlistablePort, isNetlistLeaf, isNotNetlistable, isNotNetlistablePort, isNotVisible, isOutput, isPlaceable, isPlaceable, isPlaced, isPlaced, isPlacementLocked, isRoot, isSimulateable, isSimulateable, isSink, isSource, isVisible, isVisible, join, lockPlacement, nc, out, out, param, popHierarchy, port, port, port, postorderCheck, preorderCheck, pushHierarchy, pushHierarchy, pushHierarchy, pushHierarchy, pushHierarchyNoImplicitPorts, pushHierarchyNoImplicitPorts, removeAllUnconnectedPorts, removePort, removeProperty, replaceProperty, replaceProperty, resetBehavioralModelsToDefaults, setAsynchronousSourceSinkResolved, setGeneric, setHeight, setNotNetlistable, setNotNetlistable, setNotVisible, setNotVisible, setPlacementInfo, setPortNotNetlistable, setPortNotNetlistable, setProperty, setWidth, subClassDelete, toString, uniquifyCell, userDefinedClockCount, verifyAndCleanup

Methods inherited from class byucc.jhdl.base.Node

addObservable, addSimulatorCallback, checkAll, delete, getBuildingFlag, getChildren, getChildrenEnumeration, getDefaultClock, getInstanceName, getParent, getParentCell, getRelatives, getSystem, getWires, optimize, orphanAllowed, printAllChildren, printTree, removeSimulatorCallback, setDefaultClock

Methods inherited from class byucc.jhdl.base.Nameable

caseSensitivity, caseSensitivity, disableNameClashChecking, getFullName, getFullNameNoTestBench, getHierNameNoTestBench, getInstanceNo, getInstanceNumber, getLeafName, getLeafName, getRelativeName, getUserName, getUserName, hasUserSpecifiedName, isDescendantOf, setInstanceNumber

Methods inherited from class java.lang.Object

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

Field Detail

cellname

public static final java.lang.String cellname

Deprecated.

The static cellname (netlist reference name) for opad

See Also:

Constant Field Values

cell_interface

public static CellInterface[] cell_interface

Deprecated.

The port interface for: opad opad : in (1)

Constructor Detail

opad

protected opad(Node parent)

Deprecated.

Used only by child classes to pass up the parent cell.

Parameters:

parent - Parent cell

opad

protected opad(Node parent,
               java.lang.String name)

Deprecated.

Used only by child classes to pass up the parent cell and instance name.

Parameters:

parent - Parent cell

name - Instance name of the cell

opad

public opad(Node parent,
            Wire opad)

Deprecated.

Constructs a new opad.

Parameters:

parent - The parent Cell to the opad

opad - The Wire to be connected to input port opad

opad

public opad(Node parent,
            java.lang.String instanceName,
            Wire opad)

Deprecated.

Constructs a new opad. The initial String parameter specifies the instance name.

Parameters:

parent - The parent Cell to the opad

instanceName - The instance name of the opad

opad - The Wire to be connected to input port opad

opad

public opad(Node parent,
            java.lang.String instanceName,
            java.lang.String s0,
            Wire w0)

Deprecated.

Constructs a new opad, connecting each Wire to the port whose name is given by the accompanying String parameter The initial String parameter specifies the instance name.

Parameters:

parent - The parent Cell to the opad

instanceName - The instance name of the opad

s0 - The name of the port to which w0 will be connected

w0 - The Wire to be connected to the port specified by s0

opad

public opad(Node parent,
            ArgBlockList abl)

Deprecated.

Constructs a new opad, connecting its ports as given by the String-Wire pairs in the ArgBlockList. Any generic assignments are made through String-String pairs in the ArgBlockList.

Parameters:

parent - The parent Cell to the opad

abl - The list of String-Wire pairs for port assignments, and String-String pairs for generic assignments.

opad

public opad(Node parent,
            java.lang.String instanceName,
            ArgBlockList abl)

Deprecated.

Constructs a new opad, connecting its ports as given by the String-Wire pairs in the ArgBlockList. Any generic assignments are made through String-String pairs in the ArgBlockList. The initial String parameter is the instance name.

Parameters:

parent - The parent Cell to the opad

instanceName - The instance name of the opad

abl - The list of String-Wire pairs for port assignments, and String-String pairs for generic assignments.

Method Detail

getCellName

public java.lang.String getCellName()

Deprecated.

Description copied from class: Cell

Access the cell name associated with a derived class. The cellname field is lazily evaluated on the first call of this method. Can be overriden to make cellname different by instance. If the field does not exist, this defaults to the classname.

Overrides:

getCellName in class Cell

Returns:

the cell name associated with a derived class, null if not declared.

portMayBeUndriven

public boolean portMayBeUndriven(java.lang.String portname)

Deprecated.

Description copied from interface: UndrivenInputsAllowable

This method will be called when JHDL detects an undriven input port. If the return value is true, the typical error will be avoided. If the return value is false, JHDL will treat the port like any other, and throw an exception that an undriven input was detected.

Specified by:

portMayBeUndriven in interface UndrivenInputsAllowable

Parameters:

portname - the name of the port, from the cell_interface

Returns:

true if this port may be undriven based on the primitive's mode of operation.

cellInterfaceDeterminesUniqueNetlistStructure

public final boolean cellInterfaceDeterminesUniqueNetlistStructure()

Deprecated.

Description copied from class: Cell

When false, the default behavior of this method, each cell will list itself separately in a netlist, guaranteeing that the netlist will not have invalid data at the expense of a larger file-size. Overriding this method to return true allows JHDL to save memory and netlists to be smaller by sharing the netlist structures that are guaranteed to be identical. NOTE: Do not override this unless every possible condition responsible for structural differences in a class (types and amount of children cells created, and arrangements of wires connected to ports) is included in the cellInterface[] of that class.

Overrides:

cellInterfaceDeterminesUniqueNetlistStructure in class Cell

Returns:

false if not overridden, preventing all memory sharing

type

public int type()

Deprecated.

Description copied from interface: PreDefinedSchematic

This method returns one of the predefined schematic constants to identify the type of this cell.

Specified by:

type in interface PreDefinedSchematic

Returns:

A predefined schematic constant

main

public static void main(java.lang.String[] argv)

Deprecated.

test

public static void test()

Deprecated.