/// <summary>
/// Saves BAM data to disk image
/// </summary>
/// <param name="disk">Disk image to write</param>
public override void Save(BaseDisk disk)
{
byte[] data = BaseDisk.EmptySector();
data[0] = Directory.Track;
data[1] = Directory.Sector;
data[2] = (byte)DOSversion;
data[0x14] = 0xA0;
data[0x15] = 0xA0;
data[0x16] = (byte)DiskId[0];
data[0x17] = (byte)DiskId[1];
data[0x18] = 0xA0;
data[0x19] = (byte)DOStype[0];
data[0x1A] = (byte)DOStype[1];
data[0x1B] = 0xA0;
data[0x1C] = 0xA0;
Array.Copy(DiskLabel(), 0, data, 4, 16);
disk.PutSector(Directory.Track, 0, data);
data = BAMsectorHeader();
data[0] = Directory.Track;
data[1] = 2;
Array.Copy(RawMap(41, 80), 0, data, 16, 40 * EntrySize);
disk.PutSector(Directory.Track, 1, data);
data = BAMsectorHeader();
data[0] = 0;
data[1] = 0xFF;
Array.Copy(RawMap(1, 40), 0, data, 16, 40 * EntrySize);
disk.PutSector(Directory.Track, 2, data);
}
/// <summary>
/// Single bam sector
/// </summary>
/// <param name="firstTrack"></param>
/// <param name="lastTrack"></param>
/// <returns></returns>
protected byte[] BAMsector(byte firstTrack, byte lastTrack)
{
byte[] data = BaseDisk.EmptySector();
data[2] = (byte)DOSversion;
data[4] = firstTrack;
data[5] = (byte)(lastTrack + 1);
Array.Copy(RawMap(firstTrack, lastTrack), 0, data, 6, (lastTrack - firstTrack + 1) * EntrySize);
return(data);
}
private byte[] BAMsectorHeader()
{
byte[] data = BaseDisk.EmptySector();
data[2] = (byte)DOSversion;
data[3] = (byte)~DOSversion;
data[4] = (byte)DiskId[0];
data[5] = (byte)DiskId[1];
data[6] = 0; // No checks
data[7] = 0; // No autorun
return(data);
}
/// <summary>
/// Directory as a list of raw sector data
/// </summary>
/// <returns></returns>
public List <byte[]> ToRaw()
{
List <byte[]> ret = new List <byte[]>();
int sectors = (dir.Count + EntriesPerSector - 1) / EntriesPerSector;
// see https://stackoverflow.com/questions/17944/how-to-round-up-the-result-of-integer-division
for (int j = 0; j < sectors; j++)
{
byte[] s = BaseDisk.EmptySector();
for (int e = 0; e < EntriesPerSector && j * EntriesPerSector + e < dir.Count; ++e)
{
Array.Copy(dir[j * EntriesPerSector + e].ToRaw(), 0,
s, e * DirectoryEntry.EntrySize, DirectoryEntry.EntrySize);
}
}
return(ret);
}
/// <summary>
/// Saves BAM data to disk image
/// </summary>
/// <param name="disk">Disk image to write</param>
public override void Save(BaseDisk disk)
{
byte[] data = BaseHeader();
Array.Copy(RawMap(), 0, data, 4, 35 * EntrySize);
for (int j = 0; j < 35; ++j)
{
data[0xDD + j] = SectorsMap[35 + j].FreeSectors;
}
disk.PutSector(18, 0, data);
data = BaseDisk.EmptySector();
for (int j = 0; j < 35; ++j)
{
Array.Copy(SectorsMap[35 + j].flags, 0, data, j * 3, 3);
}
disk.PutSector(53, 0, data);
}
/// <summary>
/// Writes disk header
/// </summary>
/// <param name="disk"></param>
protected void SaveHeader(BaseDisk disk)
{
byte[] data = BaseDisk.EmptySector();
data[0] = BAMtrack;
data[1] = 0;
data[2] = (byte)DOSversion;
data[0x17] = 0xA0;
data[0x18] = (byte)DiskId[0];
data[0x19] = (byte)DiskId[1];
data[0x1A] = 0xA0;
data[0x1B] = (byte)DOStype[0];
data[0x1C] = (byte)DOStype[1];
data[0x1D] = 0xA0;
data[0x1E] = 0xA0;
data[0x1F] = 0xA0;
data[0x20] = 0xA0;
Array.Copy(DiskLabel(), 0, data, 6, 16);
disk.PutSector(Directory.Track, 0, data);
}
/// <summary>
/// Disk Header
/// </summary>
/// <returns></returns>
protected virtual byte[] BaseHeader()
{
byte[] data = BaseDisk.EmptySector();
data[0] = Directory.Track;
data[1] = Directory.Sector;
data[2] = (byte)DOSversion;
data[3] = (byte)(DoubleSide ? 0x80 : 0);
data[0xA0] = 0xA0;
data[0xA1] = 0xA0;
data[0xA2] = (byte)DiskId[0];
data[0xA3] = (byte)DiskId[1];
data[0xA4] = 0xA0;
data[0xA5] = (byte)DOStype[0];
data[0xA6] = (byte)DOStype[1];
data[0xA7] = 0xA0;
data[0xA8] = 0xA0;
data[0xA9] = 0xA0;
data[0xAA] = 0xA0;
Array.Copy(DiskLabel(), 0, data, 0x90, 16);
return(data);
}
