Package org.applecommander.device.nibble

Class NibbleUtil

java.lang.Object

org.applecommander.device.nibble.NibbleUtil

public class NibbleUtil
extends Object

Constructor Summary

Constructors

Constructor	Description
NibbleUtil()

Method Summary

Modifier and Type	Method	Description
static int	decodeOddEven(DataBuffer rawData, int offset)	Decode odd-even bytes as stored on disk.
static void	encodeOddEven(DataBuffer data, int offset, int value)	Encode odd-even bytes to be stored on disk.

Methods inherited from class java.lang.Object

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

Constructor Details

NibbleUtil

public NibbleUtil()

Method Details

decodeOddEven

public static int decodeOddEven(DataBuffer rawData,
 int offset)

Decode odd-even bytes as stored on disk. The format will be in two bytes. They are stored as such:

     XX = 1d1d1d1d (odd data bits)
     YY = 1d1d1d1d (even data bits)
 

XX is then shifted by a bit and ANDed with YY to get the data byte. See page 3-12 in Beneath Apple DOS for more information.

encodeOddEven

public static void encodeOddEven(DataBuffer data,
 int offset,
 int value)

Encode odd-even bytes to be stored on disk. See decodeOddEven for the format.

See Also:

• decodeOddEven(DataBuffer, int)