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Added minidisk creation :p.

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Natalia Portillo
2017-08-28 22:43:30 +01:00
parent 3517f45004
commit 4bb1dc2b95
1 changed files with 106 additions and 27 deletions
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133
CreateXDF/Program.cs
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@@ -25,7 +25,7 @@ namespace CreateXDF
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@@ -39,14 +39,51 @@ namespace CreateXDF
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xAA };
static readonly byte[] minibpb = { 0xEB, 0x4F, 0x90, 0x58, 0x44, 0x46, 0x76, 0x31, 0x2E, 0x33, 0x69, 0x00, 0x02, 0x01, 0x01, 0x00,
0x02, 0x10, 0x00, 0x08, 0x00, 0xF9, 0x01, 0x00, 0x08, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x41, 0x54, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00,
0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0xFA, 0x33, 0xDB, 0x8E, 0xD3, 0xBC, 0xFF, 0x7B, 0xFB, 0xBA,
0xC0, 0xFA, 0x29, 0xC0, 0x8E, 0xD0, 0xBC, 0x00, 0x7C, 0xFB, 0x0E, 0x1F, 0xBE, 0x40, 0x7D, 0x8A,
0x04, 0x08, 0xC0, 0x74, 0x0D, 0x56, 0x1E, 0xB4, 0x0E, 0xB7, 0x00, 0xCD, 0x10, 0x1F, 0x5E, 0x46,
0xEB, 0xED, 0xB4, 0x00, 0xCD, 0x16, 0xCD, 0x19, 0xB9, 0x0B, 0x00, 0xF3, 0x00, 0x29, 0x0D, 0xB6,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xAA };
static readonly byte[] fatid = { 0xF9, 0xFF, 0xFF };
const ushort fatSectors = 11;
static readonly byte[] miniFatEntry = { 0xF9, 0xFF, 0xFF, 0x03, 0x40, 0x00, 0xFF, 0x2F };
const ushort rootEntries = 224;
const byte formatByte = 0xF6;
const string miniMessage = "This is a XDF disk created with CreateXDF.\n\r" +
"You need to use IBM's XDF.COM driver to access its contents.";
public static void Main(string[] args)
{
string volname = "NEW XDF IMG";
@@ -55,6 +92,7 @@ namespace CreateXDF
ushort spt = 0;
byte unk_sector_num = 0x0B;
DateTime creation = DateTime.Now;
ushort fatSectors = 11;
if((args.Length != 2 && args.Length != 3) || (args[0] != "-3" && args[0] != "-5"))
{
@@ -75,13 +113,15 @@ namespace CreateXDF
spt = 23;
mediaDescriptor = 0xF0;
unk_sector_num = 0x0B;
fatSectors = 11;
}
else if (args[0] == "-5")
{
spt = 19;
mediaDescriptor = 0xF9;
unk_sector_num = 0x09;
}
fatSectors = 9;
}
sectors = (ushort)(80 * 2 * spt);
FileStream fs = new FileStream(args[1], FileMode.CreateNew, FileAccess.ReadWrite);
@@ -150,13 +190,28 @@ namespace CreateXDF
tmp = Encoding.ASCII.GetBytes(volname.ToUpper());
fs.Write(tmp, 0, tmp.Length >= 11 ? 11 : tmp.Length);
// Write FATs
// Write FAT
fs.Seek(512, SeekOrigin.Begin);
fs.Write(fat, 0, fat.Length);
fs.Write(fat, 0, fat.Length);
// Create directory entry
ushort ctime = 0, cdate = 0;
// Write miniBPB
fs.Write(minibpb, 0, 512);
fs.Seek(-512, SeekOrigin.Current);
fs.Seek(0x26, SeekOrigin.Current);
fs.WriteByte(0x29);
fs.Write(serial, 0, 4);
tmp = Encoding.ASCII.GetBytes(volname.ToUpper());
fs.Write(tmp, 0, tmp.Length >= 11 ? 11 : tmp.Length);
fs.Seek(512 - 0x36, SeekOrigin.Current);
// Write miniFAT
byte[] miniFat = new byte[512];
Array.Copy(miniFat, 0, miniFatEntry, 0, miniFatEntry.Length);
fs.Write(miniFat, 0, 512);
fs.Write(miniFat, 0, 512);
// Create directory entry
ushort ctime = 0, cdate = 0;
cdate += (ushort)(((creation.Year - 1980) << 9) & 0xFE00);
cdate += (ushort)((creation.Month << 5) & 0x1E0);
cdate += (ushort)creation.Day;
@@ -166,41 +221,63 @@ namespace CreateXDF
byte[] cdate_b = BitConverter.GetBytes(cdate);
byte[] ctime_b = BitConverter.GetBytes(ctime);
byte[] dirEntry = new byte[32];
// Volume label
for (int i = 0; i < 11; i++)
rootDir[i] = 0x20;
dirEntry[i] = 0x20;
tmp = Encoding.ASCII.GetBytes(volname.ToUpper());
Array.Copy(tmp, 0, rootDir, 0, tmp.Length >= 11 ? 11 : tmp.Length);
Array.Copy(tmp, 0, dirEntry, 0, tmp.Length >= 11 ? 11 : tmp.Length);
// Attributes
rootDir[11] = 8;
dirEntry[11] = 8;
// Case information
rootDir[12] = 0;
dirEntry[12] = 0;
// Creation time milliseconds. This is DR-DOS so don't use.
rootDir[13] = 0;
dirEntry[13] = 0;
// Creation time
Array.Copy(ctime_b, 0, rootDir, 14, 2);
Array.Copy(ctime_b, 0, dirEntry, 14, 2);
// Creation date
Array.Copy(cdate_b, 0, rootDir, 16, 2);
Array.Copy(cdate_b, 0, dirEntry, 16, 2);
// Last access date. From Windows 95 so don't use.
rootDir[18] = 0;
rootDir[19] = 0;
dirEntry[18] = 0;
dirEntry[19] = 0;
// Extended attributes handler
rootDir[20] = 0;
rootDir[21] = 0;
dirEntry[20] = 0;
dirEntry[21] = 0;
// Last written time
Array.Copy(ctime_b, 0, rootDir, 22, 2);
Array.Copy(ctime_b, 0, dirEntry, 22, 2);
// Last written date
Array.Copy(cdate_b, 0, rootDir, 24, 2);
Array.Copy(cdate_b, 0, dirEntry, 24, 2);
// Starting cluster
rootDir[26] = 0;
rootDir[27] = 0;
dirEntry[26] = 0;
dirEntry[27] = 0;
// Size
rootDir[28] = 0;
rootDir[29] = 0;
rootDir[30] = 0;
rootDir[31] = 0;
dirEntry[28] = 0;
dirEntry[29] = 0;
dirEntry[30] = 0;
dirEntry[31] = 0;
fs.Write(rootDir, 0, rootDir.Length);
Array.Copy(dirEntry, 0, rootDir, 0, 32);
// Write mini root
byte[] miniDir = new byte[512];
Array.Copy(dirEntry, 0, miniDir, 0, 32);
tmp = Encoding.ASCII.GetBytes("README TXT");
Array.Copy(tmp, 0, dirEntry, 0, 11);
dirEntry[11] = 1;
dirEntry[26] = 2;
int messageLen = Encoding.ASCII.GetBytes(miniMessage).Length;
tmp = BitConverter.GetBytes((uint)(messageLen < 512 ? messageLen : 512));
Array.Copy(tmp, 0, dirEntry, 28, 4);
Array.Copy(dirEntry, 0, miniDir, 32, 32);
fs.Write(miniDir, 0, 512);
// Write message file
tmp = Encoding.ASCII.GetBytes(miniMessage);
fs.Write(tmp, 0, tmp.Length >= 512 ? 512 : tmp.Length);
// Write root
fs.Seek(spt * 512, SeekOrigin.Begin);
fs.Write(rootDir, 0, rootDir.Length);
ushort remainingSectors = (ushort)(sectors - (fatSectors * 2 + rootDir.Length / 512 + 1));
tmp = new byte[512];
@@ -213,6 +290,8 @@ namespace CreateXDF
byte[] checksum = BitConverter.GetBytes(xdfcopy_verify_checksum(fs, unk_sector_num));
fs.Seek(0x13C, SeekOrigin.Begin);
fs.Write(checksum, 0, 4);
fs.Seek((fatSectors + 1) * 512 + 0x13C, SeekOrigin.Begin);
fs.Write(checksum, 0, 4);
fs.Close();
}