/// <summary>
/// アロケーションテーブルの開放
/// </summary>
/// <param name="StartCluster"></param>
public void RemoveAllocation(int StartCluster)
{
int c = StartCluster;
while (true)
{
var next = GetClusterValue(c);
var end = IsEndCluster(c);
// 0x00 = 既に解放済み
if (next == 0x00)
{
break;
}
SetClusterValue(c, 0x00);
var FillLength = end ? (next & 0x0f) + 1 : ClusterPerSector;
for (var i = 0; i < FillLength; i++)
{
DiskImage.GetDataControllerForWrite((c * ClusterPerSector) + i).Fill(0);
}
// 0x8x = 最後のクラスタ
if (end)
{
break;
}
c = next;
}
}
private void FormatEntry(int Sector)
{
for (var i = 0; i < ClusterPerSector; i++)
{
var dc = DiskImage.GetDataControllerForWrite(Sector + i);
dc.Fill(0xff);
}
}
private void SetAllocateController()
{
AllocationController = new DataController[2];
AllocationController[0] = DiskImage.GetDataControllerForWrite(AllocationTableStart);
if (DiskType.IsNot2D)
{
AllocationController[1] = DiskImage.GetDataControllerForWrite(AllocationTableStart + 1);
}
}
// ファイルエントリ書き出し
public void WriteFileEntry(HuFileEntry fe)
{
FileEntryNormalize(fe);
var dc = DiskImage.GetDataControllerForWrite(fe.EntrySector);
WriteEntry(dc, fe, fe.EntryPosition, fe.StartCluster, false);
if (fe.IsIplEntry)
{
WriteIplEntry(fe);
}
}
private void FillAllocationTable()
{
var dc = DiskImage.GetDataControllerForWrite(AllocationTableStart);
dc.Fill(0);
dc.SetByte(0, 0x01);
dc.SetByte(1, 0x8f);
switch (ImageType)
{
case DiskTypeEnum.Disk2D:
for (var i = 0x50; i < 0x80; i++)
{
dc.SetByte(i, 0x8f);
}
break;
case DiskTypeEnum.Disk2DD:
dc.SetBuffer(DiskImage.GetSectorDataForWrite(AllocationTableStart + 1));
dc.Fill(0);
for (var i = 0x20; i < 0x80; i++)
{
dc.SetByte(i, 0x8f);
}
break;
case DiskTypeEnum.Disk2HD:
dc.SetByte(2, 0x8f);
dc.SetBuffer(DiskImage.GetSectorDataForWrite(AllocationTableStart + 1));
dc.Fill(0);
for (var i = 0x7a; i < 0x80; i++)
{
dc.SetByte(i, 0x8f);
}
break;
}
FormatEntry(CurrentEntrySector);
}
// IPLエントリ書き出し
public void WriteIplEntry(HuFileEntry fe)
{
var dc = DiskImage.GetDataControllerForWrite(0);
WriteEntry(dc, fe, 0x00, fe.StartCluster * ClusterPerSector, true);
}
