protected bool addFile(byte[] buf, int hdrIndex, int dataIndex)
{
byte[] s9 = new byte[256];
_diskImage.ReadLogicalSector(0, 0, 9, s9);
int len = buf[hdrIndex + 13];
int pos = s9[0xE4] * 0x10;
byte[] dir = new byte[256];
_diskImage.ReadLogicalSector(0, 0, 1 + pos / 0x100, dir);
if ((s9[0xE5] | (s9[0xE6] << 8)) < len) // disk full
{
Locator.Resolve <IUserMessage>()
.Error("HOBETA loader\n\nDisk full! Create empty disk and repeat operation!");
return(false);
}
for (int i = 0; i < 14; i++)
{
dir[(pos & 0xFF) + i] = buf[hdrIndex + i];
}
ushort x = (ushort)(s9[0xE1] | (s9[0xE2] << 8));
dir[(pos & 0xFF) + 14] = (byte)x;
dir[(pos & 0xFF) + 15] = (byte)(x >> 8);
_diskImage.WriteLogicalSector(0, 0, 1 + pos / 0x100, dir);
pos = s9[0xE1] + 16 * s9[0xE2];
s9[0xE1] = (byte)((pos + len) & 0x0F);
s9[0xE2] = (byte)((pos + len) >> 4);
s9[0xE4]++;
x = (ushort)(s9[0xE5] | (s9[0xE6] << 8));
x -= (ushort)len;
s9[0xE5] = (byte)x;
s9[0xE6] = (byte)(x >> 8);
_diskImage.WriteLogicalSector(0, 0, 9, s9);
// goto next track
for (int i = 0; i < len; i++, pos++)
{
for (int j = 0; j < 0x100 && (dataIndex + i * 0x100 + j) < buf.Length; j++)
{
s9[j] = buf[dataIndex + i * 0x100 + j];
}
_diskImage.WriteLogicalSector(pos / 32, (pos / 16) & 1, (pos & 0x0F) + 1, s9);
}
return(true);
}
private void loadFromStream(Stream stream)
{
int cylCount = (int)stream.Length / (256 * 16 * 2);
if ((stream.Length % (256 * 16 * 2)) > 0)
{
_diskImage.SetPhysics(cylCount + 1, 2);
}
else
{
_diskImage.SetPhysics(cylCount, 2);
}
_diskImage.FormatTrdos();
int i = 0;
while (stream.Position < stream.Length)
{
byte[] snbuf = new byte[256];
stream.Read(snbuf, 0, 256);
_diskImage.WriteLogicalSector(i >> 13, (i >> 12) & 1, ((i >> 8) & 0x0F) + 1, snbuf);
i += 0x100;
}
}