jmri.jmrit
Class MemoryContents

java.lang.Object
  jmri.jmrit.MemoryContents

public class MemoryContents
extends Object

Model (and provide utility functions for) board memory as expressed in .hex files.

Files come in two formats. The older one had 16 bit (4 character) addresses; we support the entire address space for these. The newer form has 24 bit (6 character) addresses, which moves the rest of the information over on the line. The "address24bit" boolean controls which of these is expected.

Note that even with 24 bit addresses, we load the entire address space by assuming that there are is only 64K of actual content. This will eventually have to be extended to full 24-bit addressing, in which case a sparse implementation (e.g. 16 bit pages) will be needed.

Author:

Bob Jacobsen Copyright (C) 2005

Constructor Summary

MemoryContents()

Method Summary

String	getComment(String c)
int	getLocation(int location)
boolean	locationInUse(int location)
int	nextContent(int location) Return the address of the next location containing data, including the location in the argument
void	readHex(File file)
void	setAddress24Bit(boolean v)
void	setLocation(int location, int value)
void	writeHex(Writer w)

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryContents

public MemoryContents()

Method Detail

getComment

public String getComment(String c)

setAddress24Bit

public void setAddress24Bit(boolean v)

readHex

public void readHex(File file)
             throws FileNotFoundException

Throws:

FileNotFoundException

writeHex

public void writeHex(Writer w)
              throws IOException

Throws:

IOException

nextContent

public int nextContent(int location)

Return the address of the next location containing data, including the location in the argument

setLocation

public void setLocation(int location,
                        int value)

locationInUse

public boolean locationInUse(int location)

getLocation

public int getLocation(int location)