/// <summary>
/// initialize the algorithm related porperties
/// </summary>
public void OnCacheAlgorithimStart()
{
Offset = "";
Index = "";
Tag = "";
VisibiltyStatues = true;
CacheBlocksPresented.Clear();
Demonstrations.Clear();
}
/// <summary>
/// this value is used to give the tag,index and offset the correct value then convert the index value to decimal and prepair the values of the listview to be printed
/// </summary>
/// <param name="address"></param>
/// <param name="numberOfBlocksOrSets"></param>
/// <param name="blockSizeValue"></param>
/// <param name="numberOfIndexBits"></param>
/// <param name="numberOfTagBits"></param>
/// <param name="cacheSizeValue"></param>
public void BinaryToDecimal_TagIndexOffsetAssignmentnFunction(string address, int numberOfBlocksOrSets, int blockSizeValue, int numberOfIndexBits, int numberOfTagBits, int cacheSizeValue)
{
Tag = address.Substring(address.Length - GetLogValue(blockSizeValue) - numberOfIndexBits - numberOfTagBits, numberOfTagBits);
Index = address.Substring(address.Length - GetLogValue(blockSizeValue) - numberOfIndexBits, numberOfIndexBits);
Offset = address.Substring(address.Length - GetLogValue(blockSizeValue), GetLogValue(blockSizeValue));
IndexInDecimal = 0;
int x = 0;
for (int i = Index.Length - 1; i >= 0; i--, x++)
{
if (Index[i] == '1')
{
IndexInDecimal += (int)Math.Pow(2, x);
}
}
#region Cache Blocks Values
for (int i = 0; i < numberOfBlocksOrSets; i++)
{
string BlockRow = i.ToString() + ", " + (i + numberOfBlocksOrSets).ToString() + ", " + (i + numberOfBlocksOrSets * 2).ToString() + ", " + (i + numberOfBlocksOrSets * 3).ToString() + ", " + (i + numberOfBlocksOrSets * 4).ToString() + ", " + (i + numberOfBlocksOrSets * 5).ToString() + " ," + (i + numberOfBlocksOrSets * 6).ToString() + ".......";
if (i == IndexInDecimal)
{
CacheBlocksPresented.Add(new PresentationModel(i, BlockRow, true));
}
else
{
CacheBlocksPresented.Add(new PresentationModel(i, BlockRow, false));
}
}
#endregion
#region Cache Algorithm Explanations
Demonstrations.Add("the Tag Bits are compared with the corresponding Tag Bits in the Cache Directory.");
Demonstrations.Add("the Index Bits are used to select a particular Set in the Cache.");
Demonstrations.Add("the Offest Bits are used to select a particular byte in the accessed block.");
Demonstrations.Add("Memory Size= " + SelectedRamSize + " =2 to the power of " + TotalNumberOfBits);
Demonstrations.Add("Cache Size= " + SelectedCacheSize + " =2 to the power of " + GetLogValue(cacheSizeValue));
Demonstrations.Add("Block Size= " + SelectedBlockSize + " =2 to the power of " + GetLogValue(blockSizeValue));
Demonstrations.Add("Number of bits in Tag = Total bits - Index bits - Offset bits= " + TotalNumberOfBits + "- " + GetLogValue(numberOfBlocksOrSets) + "- " + GetLogValue(blockSizeValue) + "= " + numberOfTagBits);
if (IsDirectMapping)
{
Demonstrations.Add("Number of blocks in cache=" + SelectedCacheSize + "/" + SelectedBlockSize + " = (2 to the power of" + GetLogValue(cacheSizeValue) + ")/(2 to the power of " + GetLogValue(blockSizeValue) + ")= ");
Demonstrations.Add(Math.Pow(2, numberOfIndexBits) + ".");
}
else
{
Demonstrations.Add("Number of sets in cache = Number of blocks/associativity type = (" + cacheSizeValue / blockSizeValue + ")/(" + SelectedAssociativity + ")= ");
Demonstrations.Add(numberOfBlocksOrSets + ".");
}
#endregion
}