public void readLogicalSector(int cyl, int side, int sec, byte[] buffer)
{
for (int i = 0; i < buffer.Length; i++)
{
buffer[i] = 0;
}
if (cyl < 0 || cyl >= this._cylynderList.Count)
{
return;
}
Track[] array = (Track[])this._cylynderList[cyl];
if (side < 0 || side >= this._sideCount)
{
return;
}
Track track = array[side];
for (int j = 0; j < track.HeaderList.Count; j++)
{
SECHDR sechdr = (SECHDR)track.HeaderList[j];
if ((int)sechdr.n == sec && (int)sechdr.c == cyl && sechdr.dataOffset > 0)
{
int num = sechdr.datlen;
if (num > buffer.Length)
{
num = buffer.Length;
}
for (int k = 0; k < num; k++)
{
buffer[k] = track.RawRead(sechdr.dataOffset + k);
}
return;
}
}
}
public void RefreshHeaders()
{
this._headerList.Clear();
if (this._trackImage == null)
{
return;
}
for (int i = 0; i < this._trackImage.Length - 8; i++)
{
if (this._trackImage[i] == 161 && this._trackImage[i + 1] == 254 && this.RawTestClock(i))
{
SECHDR sechdr = new SECHDR();
this._headerList.Add(sechdr);
sechdr.idOffset = i + 2;
sechdr.idTime = (ulong)((long)sechdr.idOffset * (long)this._byteTime);
sechdr.c = this._trackImage[sechdr.idOffset];
sechdr.s = this._trackImage[sechdr.idOffset + 1];
sechdr.n = this._trackImage[sechdr.idOffset + 2];
sechdr.l = this._trackImage[sechdr.idOffset + 3];
sechdr.crc1 = (ushort)((int)this._trackImage[i + 6] | (int)this._trackImage[i + 7] << 8);
sechdr.c1 = (this.WD1793_CRC(i + 1, 5) == sechdr.crc1);
sechdr.dataOffset = -1;
sechdr.datlen = 0;
if (sechdr.l <= 5)
{
int num = this._trackImage.Length - 8;
int j = i + 8;
while (j < num)
{
if (this._trackImage[j] == 161 && this.RawTestClock(j) && !this.RawTestClock(j + 1))
{
if (this._trackImage[j + 1] != 248 && this._trackImage[j + 1] != 251)
{
break;
}
sechdr.datlen = 128 << (int)sechdr.l;
sechdr.dataOffset = j + 2;
sechdr.dataTime = (ulong)((long)sechdr.dataOffset * (long)this._byteTime);
if (sechdr.dataOffset + sechdr.datlen + 2 > this._trackImage.Length)
{
sechdr.datlen = this._trackImage.Length - sechdr.dataOffset;
sechdr.crc2 = (ushort)((this.WD1793_CRC(sechdr.dataOffset - 1, sechdr.datlen + 1) ^ ushort.MaxValue));
sechdr.c2 = false;
break;
}
sechdr.crc2 = (ushort)((int)this._trackImage[sechdr.dataOffset + sechdr.datlen] | (int)this._trackImage[sechdr.dataOffset + sechdr.datlen + 1] << 8);
sechdr.c2 = (this.WD1793_CRC(sechdr.dataOffset - 1, sechdr.datlen + 1) == sechdr.crc2);
break;
}
else
{
j++;
}
}
}
}
}
}
public void writeLogicalSector(int cyl, int side, int sec, byte[] buffer)
{
if (cyl < 0 || cyl >= this._cylynderList.Count)
{
return;
}
Track[] array = (Track[])this._cylynderList[cyl];
if (side < 0 || side >= this._sideCount)
{
return;
}
Track track = array[side];
for (int i = 0; i < track.HeaderList.Count; i++)
{
SECHDR sechdr = (SECHDR)track.HeaderList[i];
if ((int)sechdr.n == sec && (int)sechdr.c == cyl && sechdr.dataOffset > 0 && sechdr.datlen >= buffer.Length)
{
int num = buffer.Length;
if (num > sechdr.datlen)
{
num = sechdr.datlen;
}
for (int j = 0; j < num; j++)
{
track.RawWrite(sechdr.dataOffset + j, buffer[j], false);
}
ushort num2 = track.WD1793_CRC(sechdr.dataOffset - 1, sechdr.datlen + 1);
track.RawWrite(sechdr.dataOffset + sechdr.datlen, (byte)num2, false);
track.RawWrite(sechdr.dataOffset + sechdr.datlen + 1, (byte)(num2 >> 8), false);
sechdr.crc2 = num2;
sechdr.c2 = true;
return;
}
}
}
