Converted to support image order and image layout instead of a simple

byte array.

src/com/webcodepro/applecommander/storage/DosFormatDisk.java

@@ -19,6 +19,7 @@
  */
 package com.webcodepro.applecommander.storage;
 
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
 import com.webcodepro.applecommander.util.AppleUtil;
 
 import java.util.ArrayList;
@@ -101,17 +102,16 @@ public class DosFormatDisk extends FormattedDisk {
 	 * @param diskImage
 	 * @param order
 	 */
-	public DosFormatDisk(String filename, byte[] diskImage) {
-		super(filename, diskImage);
+	public DosFormatDisk(String filename, ImageOrder imageOrder) {
+		super(filename, imageOrder);
 	}
 
 	/**
 	 * Create a DosFormatDisk.  All DOS disk images are expected to
 	 * be 140K in size.
 	 */
-	public static DosFormatDisk[] create(String filename) {
-		DosFormatDisk disk = 
-			new DosFormatDisk(filename, new byte[APPLE_140KB_DISK]);
+	public static DosFormatDisk[] create(String filename, ImageOrder imageOrder) {
+		DosFormatDisk disk = new DosFormatDisk(filename, imageOrder);
 		disk.format();
 		return new DosFormatDisk[] { disk };
 	}
@@ -537,6 +537,7 @@ public class DosFormatDisk extends FormattedDisk {
 	 * @see com.webcodepro.applecommander.storage.FormattedDisk#format()
 	 */
 	public void format() {
+		getImageOrder().format();
 		format(15, 35, 16);
 	}
 	

src/com/webcodepro/applecommander/storage/FormattedDisk.java

@@ -19,6 +19,8 @@
  */
 package com.webcodepro.applecommander.storage;
 
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
+
 import java.io.IOException;
 import java.io.InputStream;
 import java.text.SimpleDateFormat;
@@ -122,8 +124,8 @@ public abstract class FormattedDisk extends Disk implements DirectoryEntry {
 	 * @param filename
 	 * @param diskImage
 	 */
-	public FormattedDisk(String filename, byte[] diskImage) {
-		super(filename, diskImage);
+	public FormattedDisk(String filename, ImageOrder imageOrder) {
+		super(filename, imageOrder);
 	}
 
 	/**

src/com/webcodepro/applecommander/storage/OzDosFormatDisk.java

@@ -19,6 +19,8 @@
  */
 package com.webcodepro.applecommander.storage;
 
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
+
 /**
  * Manages a disk that is in OzDOS format.
  * This is basically DOS 3.3 except that the disk has two volumes of
@@ -50,20 +52,17 @@ public class OzDosFormatDisk extends DosFormatDisk {
 	 * @param filename
 	 * @param diskImage
 	 */
-	public OzDosFormatDisk(String filename, byte[] diskImage, int logicalOffset) {
-		super(filename, diskImage);
+	public OzDosFormatDisk(String filename, ImageOrder imageOrder, int logicalOffset) {
+		super(filename, imageOrder);
 		this.logicalOffset = logicalOffset;
 	}
 	/**
 	 * Create a OzDosFormatDisk.
 	 */
-	public static DosFormatDisk[] create(String filename) {
-		byte[] diskImage = new byte[APPLE_800KB_2IMG_DISK];
-		OzDosFormatDisk disk1 = new OzDosFormatDisk(filename,
-			diskImage, OZDOS_DISK_1);
+	public static DosFormatDisk[] create(String filename, ImageOrder imageOrder) {
+		OzDosFormatDisk disk1 = new OzDosFormatDisk(filename, imageOrder, OZDOS_DISK_1);
+		OzDosFormatDisk disk2 = new OzDosFormatDisk(filename, imageOrder, OZDOS_DISK_2);
 		disk1.format();
-		OzDosFormatDisk disk2 = new OzDosFormatDisk(filename,
-			diskImage, OZDOS_DISK_2);
 		disk2.format();
 		return new OzDosFormatDisk[] { disk1, disk2 };
 	}
@@ -93,28 +92,12 @@ public class OzDosFormatDisk extends DosFormatDisk {
 			return 0;
 		}
 	}
-	/**
-	 * Compute the track and sector offset into the disk image.
-	 * This varies with OzDOS.
-	 */
-	protected int getOffset(int track, int sector) throws IllegalArgumentException {
-		if ((track * 32 + sector) * SECTOR_SIZE > getPhysicalSize()) {
-			throw new IllegalArgumentException(
-				"The track (" + track + ") and sector (" + sector 
-				+ ") do not match the disk image size.");
-		} else if (isProdosOrder()) {
-			return ((track * 32) + sector) * BLOCK_SIZE + logicalOffset;
-		} else {
-			// Note that DOS format is unexpected.
-			throw new IllegalArgumentException(
-				"Unknown disk format.");
-		}
-	}
 	/**
 	 * Format the disk as OzDOS.
 	 * @see com.webcodepro.applecommander.storage.FormattedDisk#format()
 	 */
 	public void format() {
+		getImageOrder().format();
 		format(31, 50, 32);
 	}
 }

src/com/webcodepro/applecommander/storage/PascalFormatDisk.java

@@ -19,6 +19,7 @@
  */
 package com.webcodepro.applecommander.storage;
 
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
 import com.webcodepro.applecommander.util.AppleUtil;
 
 import java.util.ArrayList;
@@ -108,19 +109,17 @@ public class PascalFormatDisk extends FormattedDisk {
 	 * @param filename
 	 * @param diskImage
 	 */
-	public PascalFormatDisk(String filename, byte[] diskImage) {
-		super(filename, diskImage);
+	public PascalFormatDisk(String filename, ImageOrder imageOrder) {
+		super(filename, imageOrder);
 	}
 
 	/**
 	 * Create a PascalFormatDisk.
 	 */
-	public static PascalFormatDisk[] create(String filename, String volumeName, 
-		int size) {
-			
-		PascalFormatDisk disk = new PascalFormatDisk(filename, new byte[size]);
-		disk.setDiskName(volumeName);
+	public static PascalFormatDisk[] create(String filename, String volumeName, ImageOrder imageOrder) {
+		PascalFormatDisk disk = new PascalFormatDisk(filename, imageOrder);
 		disk.format();
+		disk.setDiskName(volumeName);
 		return new PascalFormatDisk[] { disk };
 	}
 
@@ -445,6 +444,7 @@ public class PascalFormatDisk extends FormattedDisk {
 	 * @see com.webcodepro.applecommander.storage.FormattedDisk#format()
 	 */
 	public void format() {
+		getImageOrder().format();
 		writeBootCode();
 		// Create volume name
 		byte[] directory = readDirectory();

src/com/webcodepro/applecommander/storage/ProdosFormatDisk.java

@@ -19,6 +19,7 @@
  */
 package com.webcodepro.applecommander.storage;
 
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
 import com.webcodepro.applecommander.util.AppleUtil;
 
 import java.io.IOException;
@@ -130,8 +131,8 @@ public class ProdosFormatDisk extends FormattedDisk {
 	 * @param filename
 	 * @param diskImage
 	 */
-	public ProdosFormatDisk(String filename, byte[] diskImage) {
-		super(filename, diskImage);
+	public ProdosFormatDisk(String filename, ImageOrder imageOrder) {
+		super(filename, imageOrder);
 		volumeHeader = new ProdosVolumeDirectoryHeader(this);
 		initialize();
 	}
@@ -167,10 +168,10 @@ public class ProdosFormatDisk extends FormattedDisk {
 	/**
 	 * Create a ProdosFormatDisk.
 	 */
-	public static ProdosFormatDisk[] create(String filename, String diskName, int imageSize) {
-		ProdosFormatDisk disk = new ProdosFormatDisk(filename, new byte[imageSize]);
-		disk.setDiskName(diskName);
+	public static ProdosFormatDisk[] create(String filename, String diskName, ImageOrder imageOrder) {
+		ProdosFormatDisk disk = new ProdosFormatDisk(filename, imageOrder);
 		disk.format();
+		disk.setDiskName(diskName);
 		return new ProdosFormatDisk[] { disk };
 	}
 
@@ -683,7 +684,7 @@ public class ProdosFormatDisk extends FormattedDisk {
 		int blocksOnDisk = getBitmapLength();
 		while (block < blocksOnDisk) {
 			if (isBlockFree(volumeBitmap,block)) {
-				if ((block+1) * BLOCK_SIZE < getDiskImage().length) {
+				if ((block+1) * BLOCK_SIZE < getPhysicalSize()) {
 					return block;
 				}
 				throw new ProdosDiskSizeDoesNotMatchException(
@@ -771,9 +772,10 @@ public class ProdosFormatDisk extends FormattedDisk {
 	 * @see com.webcodepro.applecommander.storage.FormattedDisk#format()
 	 */
 	public void format() {
+		getImageOrder().format();
 		writeBootCode();
 		String volumeName = volumeHeader.getVolumeName();
-		int totalBlocks = getDiskImage().length / BLOCK_SIZE;
+		int totalBlocks = getPhysicalSize() / BLOCK_SIZE;
 		int usedBlocks = (totalBlocks / 4096) + 7;
 		// setup volume directory
 		byte[] data = new byte[BLOCK_SIZE];

src/com/webcodepro/applecommander/storage/RdosFormatDisk.java

@@ -19,6 +19,7 @@
  */
 package com.webcodepro.applecommander.storage;
 
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
 import com.webcodepro.applecommander.util.AppleUtil;
 
 import java.util.ArrayList;
@@ -122,16 +123,15 @@ public class RdosFormatDisk extends FormattedDisk {
 	 * @param filename
 	 * @param diskImage
 	 */
-	public RdosFormatDisk(String filename, byte[] diskImage) {
-		super(filename, diskImage);
+	public RdosFormatDisk(String filename, ImageOrder imageOrder) {
+		super(filename, imageOrder);
 	}
 	
 	/**
 	 * Create a RdosFormatDisk.
 	 */
-	public static RdosFormatDisk[] create(String filename) {
-		RdosFormatDisk disk = 
-			new RdosFormatDisk(filename, new byte[APPLE_140KB_DISK]);
+	public static RdosFormatDisk[] create(String filename, ImageOrder imageOrder) {
+		RdosFormatDisk disk = new RdosFormatDisk(filename, imageOrder);
 		disk.format();
 		return new RdosFormatDisk[] { disk };
 	}
@@ -395,6 +395,7 @@ public class RdosFormatDisk extends FormattedDisk {
 	 * @see com.webcodepro.applecommander.storage.FormattedDisk#format()
 	 */
 	public void format() {
+		getImageOrder().format();
 		writeBootCode();
 		// minor hack - ensure that AppleCommander itself recognizes the
 		// RDOS disk!

src/com/webcodepro/applecommander/storage/UniDosFormatDisk.java

@@ -19,6 +19,8 @@
  */
 package com.webcodepro.applecommander.storage;
 
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
+
 /**
  * Manages a disk that is in UniDOS format.
  * This is basically DOS 3.3 except that the disk has two volumes of
@@ -48,20 +50,17 @@ public class UniDosFormatDisk extends DosFormatDisk {
 	 * @param filename
 	 * @param diskImage
 	 */
-	public UniDosFormatDisk(String filename, byte[] diskImage, int logicalOffset) {
-		super(filename, diskImage);
+	public UniDosFormatDisk(String filename, ImageOrder imageOrder, int logicalOffset) {
+		super(filename, imageOrder);
 		this.logicalOffset = logicalOffset;
 	}
 	/**
 	 * Create a UniDosFormatDisk.
 	 */
-	public static DosFormatDisk[] create(String filename) {
-		byte[] diskImage = new byte[APPLE_800KB_2IMG_DISK];
-		UniDosFormatDisk disk1 = new UniDosFormatDisk(filename,
-			diskImage, UNIDOS_DISK_1);
+	public static DosFormatDisk[] create(String filename, ImageOrder imageOrder) {
+		UniDosFormatDisk disk1 = new UniDosFormatDisk(filename, imageOrder, UNIDOS_DISK_1);
+		UniDosFormatDisk disk2 = new UniDosFormatDisk(filename, imageOrder, UNIDOS_DISK_2);
 		disk1.format();
-		UniDosFormatDisk disk2 = new UniDosFormatDisk(filename,
-			diskImage, UNIDOS_DISK_2);
 		disk2.format();
 		return new UniDosFormatDisk[] { disk1, disk2 };
 	}
@@ -79,15 +78,6 @@ public class UniDosFormatDisk extends DosFormatDisk {
 		}
 	}
 
-	/**
-	 * Modify the disk offset by the logical disk offset.  This allows
-	 * simple support for two DOS volumes on a UniDOS disk.
-	 * @see com.webcodepro.applecommander.storage.Disk#getOffset(int, int)
-	 */
-	protected int getOffset(int track, int sector) throws IllegalArgumentException {
-		return super.getOffset(track, sector) + logicalOffset;
-	}
-
 	/**
 	 * Returns the logical disk number.  This can be used to identify
 	 * between disks when a format supports multiple logical volumes.
@@ -106,6 +96,7 @@ public class UniDosFormatDisk extends DosFormatDisk {
 	 * @see com.webcodepro.applecommander.storage.FormattedDisk#format()
 	 */
 	public void format() {
+		getImageOrder().format();
 		format(31, 50, 32);
 	}
 }

src/com/webcodepro/applecommander/storage/cpm/CpmFormatDisk.java

@@ -22,6 +22,7 @@ package com.webcodepro.applecommander.storage.cpm;
 import com.webcodepro.applecommander.storage.DiskFullException;
 import com.webcodepro.applecommander.storage.FileEntry;
 import com.webcodepro.applecommander.storage.FormattedDisk;
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -91,12 +92,21 @@ public class CpmFormatDisk extends FormattedDisk {
 		}
 	}
 
-	
 	/**
-	 * Create a CP/M formatted disk.
+	 * Construct a CP/M formatted disk.
 	 */
-	public CpmFormatDisk(String filename, byte[] diskImage) {
-		super(filename, diskImage);
+	public CpmFormatDisk(String filename, ImageOrder imageOrder) {
+		super(filename, imageOrder);
+	}
+
+	/**
+	 * Create a CpmFormatDisk.  All CP/M disk images are expected to
+	 * be 140K in size.
+	 */
+	public static CpmFormatDisk[] create(String filename, ImageOrder imageOrder) {
+		CpmFormatDisk disk = new CpmFormatDisk(filename, imageOrder);
+		disk.format();
+		return new CpmFormatDisk[] { disk };
 	}
 
 	/**
@@ -267,6 +277,7 @@ public class CpmFormatDisk extends FormattedDisk {
 	 * @see com.webcodepro.applecommander.storage.FormattedDisk#format()
 	 */
 	public void format() {
+		getImageOrder().format();
 		byte[] sectorData = new byte[SECTOR_SIZE];
 		for (int i=0; i<SECTOR_SIZE; i++) {
 			sectorData[i] = (byte) 0xe5;

src/com/webcodepro/applecommander/test/DiskWriterTest.java

@@ -29,6 +29,11 @@ import com.webcodepro.applecommander.storage.OzDosFormatDisk;
 import com.webcodepro.applecommander.storage.ProdosFormatDisk;
 import com.webcodepro.applecommander.storage.UniDosFormatDisk;
 import com.webcodepro.applecommander.storage.FormattedDisk.DiskUsage;
+import com.webcodepro.applecommander.storage.physical.ByteArrayImageLayout;
+import com.webcodepro.applecommander.storage.physical.DosOrder;
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
+import com.webcodepro.applecommander.storage.physical.NibbleOrder;
+import com.webcodepro.applecommander.storage.physical.ProdosOrder;
 
 import java.io.IOException;
 import java.util.List;
@@ -46,7 +51,7 @@ public class DiskWriterTest extends TestCase {
 	 * Determine if the created disk images should be saved for later
 	 * perusal.
 	 */
-	private static final boolean saveImage = false;
+	private boolean saveImage = false;
 
 	/**
 	 * Create the DiskWriterTest.
@@ -66,17 +71,34 @@ public class DiskWriterTest extends TestCase {
 	 * Test writing and reading random files to a DOS 3.3 140K disk.
 	 */
 	public void testWriteToDos33() throws DiskFullException, IOException {
-		FormattedDisk[] disks = DosFormatDisk.create("write-test-dos33.dsk");
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_140KB_DISK);
+		ImageOrder imageOrder = new DosOrder(imageLayout);
+		FormattedDisk[] disks = DosFormatDisk.create("write-test-dos33.dsk", imageOrder);
 		writeFiles(disks, "B", "T", false);
 		saveDisks(disks);
 	}
 
+	/**
+	 * Test writing and reading random files to a DOS 3.3 140K nibbilized disk.
+	 */
+	public void testWriteToDos33Nibble() throws DiskFullException, IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_140KB_NIBBLE_DISK);
+		ImageOrder imageOrder = new NibbleOrder(imageLayout);
+		FormattedDisk[] disks = DosFormatDisk.create("write-test-dos33.nib", imageOrder);
+		writeFiles(disks, "B", "T", false);
+		saveImage = true;
+		saveDisks(disks);
+		saveImage = false;
+	}
+
 	/**
 	 * Test writing and reading random files to a ProDOS 140K disk.
 	 */	
 	public void testWriteToProdos140kDisk() throws DiskFullException, IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_140KB_DISK);
+		ImageOrder imageOrder = new ProdosOrder(imageLayout);
 		FormattedDisk[] disks = ProdosFormatDisk.create(
-			"write-test-prodos-140k.dsk", "TEST", ProdosFormatDisk.APPLE_140KB_DISK);
+			"write-test-prodos-140k.dsk", "TEST", imageOrder);
 		writeFiles(disks, "BIN", "TXT", true);
 		saveDisks(disks);
 	}
@@ -85,8 +107,10 @@ public class DiskWriterTest extends TestCase {
 	 * Test writing and reading random files to a ProDOS 800K disk.
 	 */	
 	public void testWriteToProdos800kDisk() throws DiskFullException, IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_800KB_DISK);
+		ImageOrder imageOrder = new ProdosOrder(imageLayout);
 		FormattedDisk[] disks = ProdosFormatDisk.create(
-			"write-test-prodos-800k.po", "TEST", ProdosFormatDisk.APPLE_800KB_DISK);
+			"write-test-prodos-800k.po", "TEST", imageOrder);
 		writeFiles(disks, "BIN", "TXT", true);
 		saveDisks(disks);
 	}
@@ -95,8 +119,10 @@ public class DiskWriterTest extends TestCase {
 	 * Test writing and reading random files to a ProDOS 5MB disk.
 	 */	
 	public void testWriteToProdos5mbDisk() throws DiskFullException, IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_5MB_HARDDISK);
+		ImageOrder imageOrder = new ProdosOrder(imageLayout);
 		FormattedDisk[] disks = ProdosFormatDisk.create(
-			"write-test-prodos-5mb.hdv", "TEST", ProdosFormatDisk.APPLE_5MB_HARDDISK);
+			"write-test-prodos-5mb.hdv", "TEST", imageOrder);
 		writeFiles(disks, "BIN", "TXT", true);
 		saveDisks(disks);
 	}
@@ -105,8 +131,10 @@ public class DiskWriterTest extends TestCase {
 	 * Test creating and deleting many files on a DOS 3.3 140K disk.
 	 */
 	public void testCreateAndDeleteDos33() throws IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_140KB_DISK);
+		ImageOrder imageOrder = new DosOrder(imageLayout);
 		FormattedDisk[] disks = DosFormatDisk.create(
-			"createanddelete-test-dos33.dsk");
+			"createanddelete-test-dos33.dsk", imageOrder);
 		createAndDeleteFiles(disks, "B");
 		saveDisks(disks);
 	}
@@ -115,8 +143,10 @@ public class DiskWriterTest extends TestCase {
 	 * Test creating and deleting many files on an OzDOS 800K disk.
 	 */
 	public void testCreateAndDeleteOzDos() throws IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_800KB_DISK);
+		ImageOrder imageOrder = new ProdosOrder(imageLayout);
 		FormattedDisk[] disks = OzDosFormatDisk.create(
-			"createanddelete-test-ozdos.po");
+			"createanddelete-test-ozdos.po", imageOrder);
 		createAndDeleteFiles(disks, "B");
 		saveDisks(disks);
 	}
@@ -125,8 +155,10 @@ public class DiskWriterTest extends TestCase {
 	 * Test creating and deleting many files on a UniDOS 800K disk.
 	 */
 	public void testCreateAndDeleteUniDos() throws IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_140KB_DISK);
+		ImageOrder imageOrder = new DosOrder(imageLayout);
 		FormattedDisk[] disks = UniDosFormatDisk.create(
-			"createanddelete-test-unidos.dsk");
+			"createanddelete-test-unidos.dsk", imageOrder);
 		createAndDeleteFiles(disks, "B");
 		saveDisks(disks);
 	}
@@ -135,9 +167,11 @@ public class DiskWriterTest extends TestCase {
 	 * Test creating and deleting many files on a ProDOS 140K disk.
 	 */
 	public void testCreateAndDeleteProdos140kDisk() throws IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_140KB_DISK);
+		ImageOrder imageOrder = new DosOrder(imageLayout);
 		FormattedDisk[] disks = ProdosFormatDisk.create(
 			"createanddelete-test-prodos-140k.dsk", "TEST", 
-			ProdosFormatDisk.APPLE_140KB_DISK);
+			imageOrder);
 		createAndDeleteFiles(disks, "BIN");
 		saveDisks(disks);
 	}
@@ -146,9 +180,11 @@ public class DiskWriterTest extends TestCase {
 	 * Test creating and deleting many files on a ProDOS 800K disk.
 	 */
 	public void testCreateAndDeleteProdos800kDisk() throws IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_800KB_DISK);
+		ImageOrder imageOrder = new DosOrder(imageLayout);
 		FormattedDisk[] disks = ProdosFormatDisk.create(
 			"createanddelete-test-prodos-800k.dsk", "TEST",
-			ProdosFormatDisk.APPLE_800KB_2IMG_DISK);
+			imageOrder);
 		createAndDeleteFiles(disks, "BIN");
 		saveDisks(disks);
 	}
@@ -159,8 +195,10 @@ public class DiskWriterTest extends TestCase {
 	 */
 	public void testCreateDeleteCreateDosDisk() 
 	throws DiskFullException, IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_140KB_DISK);
+		ImageOrder imageOrder = new DosOrder(imageLayout);
 		FormattedDisk[] disks = DosFormatDisk.create(
-			"createdeletecreate-test-dos-140k.dsk");
+			"createdeletecreate-test-dos-140k.dsk", imageOrder);
 		createDeleteCreate(disks, "B");
 		saveDisks(disks);
 	}
@@ -171,8 +209,10 @@ public class DiskWriterTest extends TestCase {
 	 */
 	public void testCreateDeleteCreateOzdosDisk() 
 	throws DiskFullException, IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_800KB_DISK);
+		ImageOrder imageOrder = new ProdosOrder(imageLayout);
 		FormattedDisk[] disks = OzDosFormatDisk.create(
-			"createdeletecreate-test-ozdos-800k.po");
+			"createdeletecreate-test-ozdos-800k.po", imageOrder);
 		createDeleteCreate(disks, "B");
 		saveDisks(disks);
 	}
@@ -183,8 +223,10 @@ public class DiskWriterTest extends TestCase {
 	 */
 	public void testCreateDeleteCreateUnidosDisk() 
 	throws DiskFullException, IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_140KB_DISK);
+		ImageOrder imageOrder = new ProdosOrder(imageLayout);
 		FormattedDisk[] disks = UniDosFormatDisk.create(
-			"createdeletecreate-test-unidos-800k.dsk");
+			"createdeletecreate-test-unidos-800k.dsk", imageOrder);
 		createDeleteCreate(disks, "B");
 		saveDisks(disks);
 	}
@@ -195,9 +237,11 @@ public class DiskWriterTest extends TestCase {
 	 */
 	public void testCreateDeleteCreateProdosDisk() 
 	throws DiskFullException, IOException {
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(Disk.APPLE_140KB_DISK);
+		ImageOrder imageOrder = new ProdosOrder(imageLayout);
 		FormattedDisk[] disks = ProdosFormatDisk.create(
 			"createdeletecreate-test-prodos-140k.dsk", "TEST",
-			ProdosFormatDisk.APPLE_140KB_DISK);
+			imageOrder);
 		createDeleteCreate(disks, "BIN");
 		saveDisks(disks);
 	}
@@ -224,7 +268,8 @@ public class DiskWriterTest extends TestCase {
 		writeFile(disk, 
 			"This is a test text file create from the DiskWriterTest".getBytes(), 
 			textType, testText);
-		if (disk.getPhysicalSize() > Disk.APPLE_140KB_DISK) {
+		if (disk.getPhysicalSize() > Disk.APPLE_140KB_DISK
+			&& disk.getPhysicalSize() != Disk.APPLE_140KB_NIBBLE_DISK) {
 			// create a few big files
 			writeFile(disk, 150000, binaryType, true);
 			writeFile(disk, 300000, binaryType, true);

src/com/webcodepro/applecommander/ui/ac.java

@@ -28,6 +28,9 @@ import com.webcodepro.applecommander.storage.FileEntry;
 import com.webcodepro.applecommander.storage.FileFilter;
 import com.webcodepro.applecommander.storage.FormattedDisk;
 import com.webcodepro.applecommander.storage.ProdosFormatDisk;
+import com.webcodepro.applecommander.storage.physical.ByteArrayImageLayout;
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
+import com.webcodepro.applecommander.storage.physical.ProdosOrder;
 
 import java.io.IOException;
 import java.util.List;
@@ -210,8 +213,10 @@ public class ac {
 	 */
 	static void createPDisk(String fileName, String volName, int imageSize)
 			throws IOException {
+		ByteArrayImageLayout layout = new ByteArrayImageLayout(imageSize);
+		ImageOrder imageOrder = new ProdosOrder(layout);
 		FormattedDisk[] disks =
-			ProdosFormatDisk.create(fileName, volName, imageSize);
+			ProdosFormatDisk.create(fileName, volName, imageOrder);
 		disks[0].save();
 	}
 	

src/com/webcodepro/applecommander/ui/swt/DiskImageFormatPane.java

@@ -57,6 +57,7 @@ public class DiskImageFormatPane extends WizardPane {
 		switch (wizard.getFormat()) {
 			case DiskImageWizard.FORMAT_DOS33:
 			case DiskImageWizard.FORMAT_RDOS:
+			case DiskImageWizard.FORMAT_CPM:
 				wizard.setOrder(DiskImageWizard.ORDER_DOS);
 				wizard.setSize(FormattedDisk.APPLE_140KB_DISK);
 				return new DiskImageNamePane(parent, wizard);
@@ -123,6 +124,8 @@ public class DiskImageFormatPane extends WizardPane {
 			+ "that I've seen have been mapped onto a 16 sector disk (leaving 3\n"
 			+ "sectors of each track unused.  The only image size RDOS supports\n"
 			+ "is 140K.");
+		createRadioButton(buttonSubpanel, "CP/M", DiskImageWizard.FORMAT_CPM,
+			"CP/M for the Apple computer.");
 		control.pack();
 	}
 	/**

src/com/webcodepro/applecommander/ui/swt/DiskImageOrderPane.java

@@ -19,6 +19,8 @@
  */
 package com.webcodepro.applecommander.ui.swt;
 
+import com.webcodepro.applecommander.storage.Disk;
+
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
@@ -87,6 +89,13 @@ public class DiskImageOrderPane extends WizardPane {
 		createRadioButton(buttonSubpanel, "ProDOS ordered", 
 			DiskImageWizard.ORDER_PRODOS,
 			"Indicates that image data should be stored by block.");
+		if (wizard.getSize() == Disk.APPLE_140KB_DISK) {
+			createRadioButton(buttonSubpanel, "Nibble ordered",
+				DiskImageWizard.ORDER_NIBBLE,
+				"Indicates that this is a disk stored as a nibble image.  This is "
+				+ "an image that consists of disk bytes.  It is only available for "
+				+ "140KB 5.25\" disks.");
+		}
 		
 		label = new Label(control, SWT.WRAP);
 		if (wizard.isHardDisk()) {

src/com/webcodepro/applecommander/ui/swt/DiskImageWizard.java

@@ -27,6 +27,12 @@ import com.webcodepro.applecommander.storage.PascalFormatDisk;
 import com.webcodepro.applecommander.storage.ProdosFormatDisk;
 import com.webcodepro.applecommander.storage.RdosFormatDisk;
 import com.webcodepro.applecommander.storage.UniDosFormatDisk;
+import com.webcodepro.applecommander.storage.cpm.CpmFormatDisk;
+import com.webcodepro.applecommander.storage.physical.ByteArrayImageLayout;
+import com.webcodepro.applecommander.storage.physical.DosOrder;
+import com.webcodepro.applecommander.storage.physical.ImageOrder;
+import com.webcodepro.applecommander.storage.physical.NibbleOrder;
+import com.webcodepro.applecommander.storage.physical.ProdosOrder;
 
 import org.eclipse.swt.widgets.Shell;
 
@@ -43,8 +49,10 @@ public class DiskImageWizard extends Wizard {
 	public static final int FORMAT_PASCAL = 4;
 	public static final int FORMAT_RDOS = 5;
 	public static final int FORMAT_OZDOS = 6;
+	public static final int FORMAT_CPM = 7;
 	public static final int ORDER_DOS = 1;
 	public static final int ORDER_PRODOS = 2;
+	public static final int ORDER_NIBBLE = 3;
 	private int format = FORMAT_DOS33;
 	private int size = FormattedDisk.APPLE_140KB_DISK;
 	private String fileName = "";
@@ -79,19 +87,34 @@ public class DiskImageWizard extends Wizard {
 		if (isCompressed()) {
 			name.append(".gz");
 		}
+		ByteArrayImageLayout imageLayout = new ByteArrayImageLayout(getSize());
+		ImageOrder imageOrder = null;
+		switch (getOrder()) {
+			case ORDER_DOS:
+				imageOrder = new DosOrder(imageLayout);
+				break;
+			case ORDER_NIBBLE:
+				imageOrder = new NibbleOrder(imageLayout);
+				break;
+			case ORDER_PRODOS:
+				imageOrder = new ProdosOrder(imageLayout);
+				break;
+		}
 		switch (format) {
 			case FORMAT_DOS33:
-				return DosFormatDisk.create(name.toString());
+				return DosFormatDisk.create(name.toString(), imageOrder);
 			case FORMAT_OZDOS:
-				return OzDosFormatDisk.create(name.toString());
+				return OzDosFormatDisk.create(name.toString(), imageOrder);
 			case FORMAT_PASCAL:
-				return PascalFormatDisk.create(name.toString(), volumeName, size);
+				return PascalFormatDisk.create(name.toString(), volumeName, imageOrder);
 			case FORMAT_PRODOS:
-				return ProdosFormatDisk.create(name.toString(), volumeName, size);
+				return ProdosFormatDisk.create(name.toString(), volumeName, imageOrder);
 			case FORMAT_RDOS:
-				return RdosFormatDisk.create(name.toString());
+				return RdosFormatDisk.create(name.toString(), imageOrder);
 			case FORMAT_UNIDOS:
-				return UniDosFormatDisk.create(name.toString());
+				return UniDosFormatDisk.create(name.toString(), imageOrder);
+			case FORMAT_CPM:
+				return CpmFormatDisk.create(name.toString(), imageOrder);
 		}
 		return null;
 	}