public fsMegaImage(AbstractDiskImage diskImage)
: base(diskImage)
{
maxFiles = 64;
LastUsableSector = 8192;
sectorMap = new SectorMap(LastUsableSector + 1);
}
public fsDos25(AbstractDiskImage diskImage)
: base(diskImage)
{
SystemSectors = 14;
LastUsableSector = 1024;
TotalSectors = 1040;
maxFiles = 64;
sectorMap = new SectorMap(TotalSectors + 1);
}
public fsDos20(AbstractDiskImage diskImage)
: base(diskImage)
{
maxFiles = 64;
LastUsableSector = 719;
TotalSectors = 720;
SystemSectors = 12;
sectorMap = new SectorMap(TotalSectors + 1);
}
public override void Format(bool clearData)
{
int i;
byte[] sec = new byte[128];
//Clear sectors
if (clearData)
{
for (i = 1; i <= diskImage.NumberOfSectors(); i++)
{
diskImage.ClearSector(i);
}
}
// Create sector map
sectorMap = new SectorMap(LastUsableSector + 1);
sectorMap.ClearMap();
sectorMap[1] = SectorMap.SectorTypes.System;
sectorMap[2] = SectorMap.SectorTypes.System;
sectorMap[3] = SectorMap.SectorTypes.System;
for (i = 351; i <= 368; i++)
{
sectorMap[i] = SectorMap.SectorTypes.System;
}
WriteSectorMap();
//Write VTOC header
sec = diskImage.ReadSector(360);
sec[0] = 7;
sec[1] = (8171 & 0xff);
sec[2] = (8171 & 0xff00) >> 8;
sec[3] = sec[1];
sec[4] = sec[2];
diskImage.WriteSector(360, sec);
}
/// <summary>
/// Create a map of sector usage based on the sector chain for each file on the disk.
/// </summary>
/// <returns></returns>
public SectorMap TraceFiles()
{
var map = new SectorMap(LastUsableSector + 1);
foreach (DirectoryEntry di in directory)
{
if (!di.EntryInUse || di.Deleted || di.OpenForOutput) continue;
var fi = GetFileInfo(di.FileName);
foreach (var fs in fi.SectorList)
{
map[fs.Sector] = SectorMap.SectorTypes.Used;
}
}
return map;
}
