bitser.primatives.slice
Class TwosComplementSlice

java.lang.Object
  |
  +--com.xilinx.JBits.CoreTemplate.RTPCore
        |
        +--bitser.primatives.slice.TwosComplementSlice

public class TwosComplementSlice
extends com.xilinx.JBits.CoreTemplate.RTPCore

Implements a Bit-serial Two's Complement operation on LSB (Least Significant Bit) first serial data.

The control signal must be asserted HI during the LSB to ensure proper reseting of the core for the next data word.

Copyright (c) 2001 by Alex Carreira

Version:
2.0 Added separate connect method for prioritizing routing
Author:
Alex Carreira
See Also:
Serialized Form

Constructor Summary
TwosComplementSlice(java.lang.String instanceName, com.xilinx.JBits.CoreTemplate.Net clk, com.xilinx.JBits.CoreTemplate.Net control, com.xilinx.JBits.CoreTemplate.Net sampleIn, com.xilinx.JBits.CoreTemplate.Net complementOut)
          Creates an instance of a TwosComplementSlice.
 
Method Summary
static int calcHeight()
          Compute and return the height of a TwosComplementSlice core.
static int calcHeightGran()
          Compute and return the vertical granularity of a TwosComplementSlice core.
static int calcWidth()
          Compute and return the width of a TwosComplementSlice core.
static int calcWidthGran()
          Compute and return the horizontal granularity of a TwosComplementSlice core.
 void connect()
          Connect the internal nets of the core.
static int getCtrlFO()
           
static int getSerDataFO()
           
 void implement()
          Implement this TwosComplementSlice instance.
 
Methods inherited from class com.xilinx.JBits.CoreTemplate.RTPCore
addChild, addChild, addFixedResource, calcAbsoluteOffset, getChild, getFixedResource, getHeight, getHeight, getHeightGran, getHierName, getName, getParent, getPort, getPort, getRelativeOffset, getTag, getWidth, getWidth, getWidthGran, isProtected, newBus, newBus, newInputPort, newInputPort, newNet, newNet, newNet, newNoConnectBus, newOutputPort, newOutputPort, newPort, newPort, numChildren, numFixedResources, numPorts, removeDescendants, toString
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

TwosComplementSlice

public TwosComplementSlice(java.lang.String instanceName,
                           com.xilinx.JBits.CoreTemplate.Net clk,
                           com.xilinx.JBits.CoreTemplate.Net control,
                           com.xilinx.JBits.CoreTemplate.Net sampleIn,
                           com.xilinx.JBits.CoreTemplate.Net complementOut)
                    throws com.xilinx.JBits.CoreTemplate.CoreException
Creates an instance of a TwosComplementSlice.
Parameters:
instanceName - The name assigned to this TwosComplementSlice instance.
clk - The external net to be connected to the clock port.
control - The external net to be connected to the control port.
sampleIn - The external net to be connected to the sample in port.
complementOut - The external net to be connected to the complement out port.
Throws:
Throws - a CoreException if anything goes wrong.
Method Detail

calcHeightGran

public static int calcHeightGran()
Compute and return the vertical granularity of a TwosComplementSlice core.

calcWidthGran

public static int calcWidthGran()
Compute and return the horizontal granularity of a TwosComplementSlice core.

calcHeight

public static int calcHeight()
Compute and return the height of a TwosComplementSlice core.

calcWidth

public static int calcWidth()
Compute and return the width of a TwosComplementSlice core.

getSerDataFO

public static int getSerDataFO()
Returns:
The fan-out that this core imposes on the serial data input net.

getCtrlFO

public static int getCtrlFO()
Returns:
The fan-out that this core imposes on the control input net.

implement

public final void implement()
                     throws com.xilinx.JBits.CoreTemplate.CoreException
Implement this TwosComplementSlice instance. WARNING: You must call the connect() method of this core or internal nets will remain unconnected.
Throws:
com.xilinx.JBits.CoreTemplate.CoreException - is thrown for error occurences.

connect

public void connect()
             throws com.xilinx.JBits.CoreTemplate.CoreException
Connect the internal nets of the core. This separate method allows the routing to be prioritized.
Throws:
com.xilinx.JBits.CoreTemplate.CoreException - is thrown for error occurences.