org.opencores.structure
Class NodeGPC

java.lang.Object
  |
  +--org.opencores.structure.Node
        |
        +--org.opencores.structure.NodeRoutable
              |
              +--org.opencores.structure.IndexedNode
                    |
                    +--org.opencores.structure.NodeGPC

public class NodeGPC

extends IndexedNode

GPC, consisting of one 5->1 LUT and one FFs.

See Also:

IndexedNode

Field Summary

NodeLUT	a LUT inside this
static int	CLK a's clock
private static int[]	INPUT_CONF Precalculated table for input selection.
static int	NINPUTS_LUT number of inputs for LUT
static int	OUT a's output
NodeFF	ra FF inside this
static int	RST a's async reset
static int	SET a's async set

Fields inherited from class org.opencores.structure.IndexedNode

idx

Fields inherited from class org.opencores.structure.NodeRoutable

cost, costs, neigh, neighCoor, NINPUTS_ROUTABLE, nSegments, portsUnassigned, segments

Fields inherited from class org.opencores.structure.Node

dir, flag, fx, fy, INOUT, INPUT, link, name, nfx, nfy, OUTPUT, ports, temp, visited, weight, width, x, y

Constructor Summary

NodeGPC(NodeLUT a, NodeFF ra, boolean updateNets, NetGlobal fillWith)
groups specified elements into one GPC

Method Summary

static int	indexOf(int x, int y) Returns index in array, based on position in matrix.
boolean	isConnectable(int pin, int segment)
int	posX() Returns its x position.
static int	posX(int idx) returns GPCs x position.
int	posY() returns its y position
static int	posY(int idx) returns GPCs y position.
java.lang.String	toString()
void	writeBitstream(BitStreamWriter stream) Writes (necessary) bistream representation of this object to stream.

Methods inherited from class org.opencores.structure.NodeRoutable

calcCost, lessLoadedNeighbour, opposite

Methods inherited from class org.opencores.structure.Node

clone, duplicate, linkNets, setWidth, unlinkNets

Methods inherited from class java.lang.Object

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

Field Detail

NINPUTS_LUT

public static final int NINPUTS_LUT

number of inputs for LUT

CLK

public static final int CLK

a's clock

SET

public static final int SET

a's async set

RST

public static final int RST

a's async reset

OUT

public static final int OUT

a's output

a

public NodeLUT a

LUT inside this

ra

public NodeFF ra

FF inside this

INPUT_CONF

private static final int[] INPUT_CONF

Precalculated table for input selection.

Constructor Detail

NodeGPC

public NodeGPC(NodeLUT a,
               NodeFF ra,
               boolean updateNets,
               NetGlobal fillWith)

groups specified elements into one GPC

Parameters:

a - LUT

ra - FF connected to a's output

updateNets - whether nets should be relinked to new GPC

fillWith - this global net is set to unassigned inputs If parameters are null, they are ignored.

WARNING: no checking for FFs. Nets between x-rx have to be deleted manually

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class Node

posX

public static int posX(int idx)

returns GPCs x position.

Parameters:

idx - GPC index

Returns:

x position

posY

public static int posY(int idx)

returns GPCs y position.

Parameters:

idx - GPC index

Returns:

y position

posX

public int posX()

Returns its x position.

Returns:

x position

Overrides:

posX in class IndexedNode

posY

public int posY()

returns its y position

Returns:

y position

Overrides:

posY in class IndexedNode

indexOf

public static int indexOf(int x,
                          int y)

Returns index in array, based on position in matrix.

Parameters:

x - x position

y - y position

Returns:

array index

isConnectable

public boolean isConnectable(int pin,
                             int segment)

Returns:

true whether connection is possible for pin pin using wire segment segment/i>

Overrides:

isConnectable in class NodeRoutable

writeBitstream

public void writeBitstream(BitStreamWriter stream)
                    throws java.io.IOException

Writes (necessary) bistream representation of this object to stream.

Parameters:

stream - stream to write to

Overrides:

writeBitstream in class NodeRoutable