com.webcodepro.applecommander.storage.physical
Class DosOrder

java.lang.Object
  com.webcodepro.applecommander.storage.physical.ImageOrder
      com.webcodepro.applecommander.storage.physical.DosOrder

Direct Known Subclasses:

NibbleOrder

public class DosOrder
extends ImageOrder

Supports disk images stored in DOS physical order.

Author:

Rob Greene (RobGreene@users.sourceforge.net)

Constructor Summary

DosOrder(ByteArrayImageLayout diskImageManager)
Construct a DosOrder.

Method Summary

protected int	getOffset(int track, int sector) Compute the track and sector offset into the disk image.
boolean	isBlockDevice() Indicates that this device is block ordered.
boolean	isTrackAndSectorDevice() Indicates that this device is track and sector ordered.
byte[]	readBlock(int block) Read the block from the disk image.
byte[]	readSector(int track, int sector) Retrieve the specified sector.
void	writeBlock(int block, byte[] data) Write the block to the disk image.
void	writeSector(int track, int sector, byte[] bytes) Write the specified sector.

Methods inherited from class com.webcodepro.applecommander.storage.physical.ImageOrder

format, getBlocksOnDevice, getDiskImageManager, getPhysicalSize, getSectorsPerDisk, getSectorsPerTrack, getTracksPerDisk, isSizeApprox, readBytes, setDiskImageManager, writeBytes

Methods inherited from class java.lang.Object

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

Constructor Detail

DosOrder

public DosOrder(ByteArrayImageLayout diskImageManager)

Construct a DosOrder.

Method Detail

isBlockDevice

public boolean isBlockDevice()

Indicates that this device is block ordered.

Specified by:

isBlockDevice in class ImageOrder

isTrackAndSectorDevice

public boolean isTrackAndSectorDevice()

Indicates that this device is track and sector ordered.

Specified by:

isTrackAndSectorDevice in class ImageOrder

readSector

public byte[] readSector(int track,
                         int sector)
                  throws java.lang.IllegalArgumentException

Retrieve the specified sector.

Specified by:

readSector in class ImageOrder

Throws:

java.lang.IllegalArgumentException

writeSector

public void writeSector(int track,
                        int sector,
                        byte[] bytes)
                 throws java.lang.IllegalArgumentException

Write the specified sector.

Specified by:

writeSector in class ImageOrder

Throws:

java.lang.IllegalArgumentException

getOffset

protected int getOffset(int track,
                        int sector)
                 throws java.lang.IllegalArgumentException

Compute the track and sector offset into the disk image. This takes into account what type of format is being dealt with.

Throws:

java.lang.IllegalArgumentException

readBlock

public byte[] readBlock(int block)

Read the block from the disk image. Note: Defined in terms of reading sectors.

Specified by:

readBlock in class ImageOrder

writeBlock

public void writeBlock(int block,
                       byte[] data)

Write the block to the disk image. Note: Defined in terms of reading sectors.

Specified by:

writeBlock in class ImageOrder