/// <summary>
/// Create a BIOS Parameter Block from a floppy geometry object
/// </summary>
/// <param name="geometry">The floppy geometry</param>
/// <param name="version">The version of the BPB to create</param>
/// <param name="oemId">The OEM ID to include in the boot sector</param>
/// <returns>A BIOS Parameter Block suitable for the floppy geometry provided</returns>
public static BiosParameterBlock FromGeometry(FloppyGeometry geometry, BiosParameterBlockVersion version, string oemId)
=> new BiosParameterBlock
{
OemId = Helper.UseAsLabel(oemId),
BytesPerLogicalSector = (ushort)(128 << geometry.BPS),
HiddenSectors = 0,
LogicalSectorsPerCluster = geometry.SPC,
LogicalSectorsPerFAT = geometry.SPF,
MediaDescriptor = geometry.MediaDescriptor,
NumberOfFATs = geometry.NoOfFATs,
NumberOfHeads = geometry.Sides,
PhysicalSectorsPerTrack = geometry.SPT,
ReservedLogicalSectors = geometry.ReservedSectors,
RootDirectoryEntries = geometry.RootDirectoryEntries,
TotalLogicalSectors = (uint)(geometry.Tracks * geometry.SPT * geometry.Sides)
};
private void btnAdvanced_Click(object sender, EventArgs e)
{
using dlgNewImageAdvanced dlgAdvanced = new dlgNewImageAdvanced();
dlgAdvanced.ShowDialog();
FloppyGeometry newGeometry = new FloppyGeometry((byte)(dlgAdvanced.lstFloppySides.SelectedIndex + 1), (byte)dlgAdvanced.txtFloppyTracks.Value,
(byte)dlgAdvanced.txtFloppySPT.Value, (byte)(Math.Log((double)dlgAdvanced.txtFloppyBPS.Value, 2) - 7), (byte)dlgAdvanced.txtFloppyMediaDesc.Value,
(byte)dlgAdvanced.txtFloppySPC.Value, (byte)dlgAdvanced.txtFloppyNumFATs.Value, (byte)dlgAdvanced.txtFloppySPF.Value, (ushort)dlgAdvanced.txtFloppyRootDir.Value,
(byte)dlgAdvanced.txtFloppyReservedSect.Value);
if (selectedItem != FloppyGeometry.FriendlyName.Custom && !newGeometry.Equals(Geometry))
{
lstFloppyGeometries.SelectedValue = FloppyGeometry.FriendlyName.Custom;
Geometry = newGeometry;
}
SerialNumber = dlgAdvanced.txtFloppySerial.Text;
FileSystemType = dlgAdvanced.txtFloppyFSType.Text;
OEMID = dlgAdvanced.txtFloppyOEMID.Text;
}
//TODO: Perform some validation of parameters before leaving in case the user tries to create an impossible image
private void btnOK_Click(object sender, EventArgs e)
{
if (!cbxFloppyBPB.Checked)
{
DialogResult noBpb = MessageBox.Show("You chose not to write a DOS BIOS parameter block (BPB) to the boot sector of the image." +
" Many programs and operating systems may not recognize the disk because of this." +
"\n\nAre you sure you want to create an image without the BPB?", "No BPB", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
if (noBpb == DialogResult.No)
{
return;
}
}
//If the "Custom..." option is selected, create a new FloppyGeometry with the custom parameters
//We don't need some of the parameters yet for raw images, so let's just ignore them for now
if (selectedItem == FloppyGeometry.FriendlyName.Custom)
{
Geometry = new FloppyGeometry(0, (byte)(lstFloppySides.SelectedIndex + 1), 0, 0, 0, (byte)txtFloppyTracks.Value,
(byte)txtFloppySPT.Value, (byte)(Math.Log((double)txtFloppyBPS.Value, 2) - 7), (byte)txtFloppyMediaDesc.Value, (byte)txtFloppySPC.Value,
(byte)txtFloppyNumFATs.Value, (byte)txtFloppySPF.Value, (ushort)txtFloppyRootDir.Value, (byte)txtFloppyReservedSect.Value);
}
}