using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Text;
using?System.Windows.Forms;
using?System.IO;

namespace?OS
{

????#region?FCB
????public?class?FCB?????????????????????//目錄結(jié)構(gòu)（文件控制塊）
????{
????????byte?[]?name=new?byte[3];?????//文件名或目錄名
????????byte?type;????????????????????//文件類型（擴展名）??0代表exe文件1代表txt文件
????????byte?attribute;???????????????//文件屬性
????????byte?address;?????????????????//文件起始盤塊號
????????char?length;??????????????????//文件長度


????????#region?構(gòu)造函數(shù)
????????public?FCB（）?
????????{
????????
????????}
????????public?FCB（byte[]nambyte?typbyte?attbyte?addchar?len）
????????{
????????????name?=?nam;
????????????type?=?typ;
????????????attribute?=?att;
????????????address?=?add;
????????????length?=?len;
????????}
????????#endregion

????????#region?屬性
????????public?byte[]?Name
????????{
????????????get?{?return?name;?}
????????????set?{?name?=?value;?}
????????}

????????public?char?Length
????????{
????????????get?{?return?length;?}
????????????set?{length=value;}
????????}

????????public?byte?Type
????????{
????????????get?{?return?type;?}
????????????set?{?type?=?value;?}
????????}

????????public?byte?Attribute
????????{
????????????get?{?return?attribute;?}
????????????set?{?attribute?=?value;?}
????????}

????????public?byte?Address
????????{
????????????get?{?return?address;}
????????????set?{?address?=?value;?}
????????}
????????#endregion
????}
????#endregion

????public?class?FileFunction
????{

????????#region?FindNullItem（判斷是否為空目錄項）
????????public?int?FindNullItem（int?dnumstring?harddisk）
????????{
????????????FileStream?Disk?=?new?FileStream（harddisk?FileMode.Open）;
????????????int?n?=?0;
????????????int?flag=0;
????????????for?（int?i?=?0;?i?????????????{
????????????????Disk.Seek（64?*?（dnum?-?1）?+?4?+?n?SeekOrigin.Begin）;??//讀fcb中的attribute
????????????????if?（Disk.ReadByte（）?==?0）
????????????????{
????????????????????flag?=?i+1;
????????????????????break;
????????????????}
????????????????n?=?n?+?8;
????????????}
????????????Disk.Close（）;
????????????return?flag;
????????}
????????#endregion


????????#region?FindFAT（查找FAT）
????????public?int?FindFAT（string?harddisk）
????????{
????????????FileStream?Disk?=?new?FileStream（?harddisk?FileMode.Open）;
????????????byte[]?FAT?=?new?byte[128];
????????????Disk.Seek（0?SeekOrigin.Begin）;
????????????Disk.Read（FAT?0?FAT.Length）;
????????????int?disknum=0;
????????????for?（int?i?=?3;?i?????????????{
????????????????if?（FAT[i]?==?0）
????????????????{
????????????????????disknum?=?i+1;
????????????????????break;
????????????????}
????????????}
????????????Disk.Close（）;
????????????return?disknum;
????????}
????????#endregion


????????#region?WriteFile（向磁盤寫入FCB）
????????public?void?WriteFile（int?disknumber?int?Itemnumber?FCB?buffer?string?harddisk

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????8192??2009-06-25?15:20??模擬操作系統(tǒng)\OS\bin\Debug\disk1.txt

?????文件???????8192??2009-06-25?15:18??模擬操作系統(tǒng)\OS\bin\Debug\disk2.txt

?????文件???????1450??2009-06-25?14:49??模擬操作系統(tǒng)\OS\bin\Debug\OS.application

?????文件?????102400??2009-06-25?14:49??模擬操作系統(tǒng)\OS\bin\Debug\OS.exe

?????文件???????2101??2009-06-25?14:49??模擬操作系統(tǒng)\OS\bin\Debug\OS.exe.manifest

?????文件?????165376??2009-06-25?14:49??模擬操作系統(tǒng)\OS\bin\Debug\OS.pdb

?????文件?????????52??2008-12-23?23:53??模擬操作系統(tǒng)\OS\bin\Debug\OS.publish\autorun.inf

?????文件???????5145??2008-12-23?23:53??模擬操作系統(tǒng)\OS\bin\Debug\OS.publish\OS.application

?????文件??????90112??2008-12-23?23:53??模擬操作系統(tǒng)\OS\bin\Debug\OS.publish\OS_1_0_0_0\OS.exe.deploy

?????文件???????5748??2008-12-23?23:53??模擬操作系統(tǒng)\OS\bin\Debug\OS.publish\OS_1_0_0_0\OS.exe.manifest

?????文件?????423856??2008-12-23?23:53??模擬操作系統(tǒng)\OS\bin\Debug\OS.publish\setup.exe

?????文件???????1450??2009-06-25?14:49??模擬操作系統(tǒng)\OS\bin\Debug\OS.vshost.application

?????文件???????5632??2005-12-08?14:51??模擬操作系統(tǒng)\OS\bin\Debug\OS.vshost.exe

?????文件???????2101??2009-06-25?14:49??模擬操作系統(tǒng)\OS\bin\Debug\OS.vshost.exe.manifest

?????文件???????3718??2008-12-24?11:09??模擬操作系統(tǒng)\OS\bin\Debug\幫助.txt

?????文件??????21789??2008-12-11?21:12??模擬操作系統(tǒng)\OS\ClassFolder\CPU.cs

?????文件???????4244??2008-12-09?20:40??模擬操作系統(tǒng)\OS\ClassFolder\Device.cs

?????文件??????10581??2008-12-11?10:33??模擬操作系統(tǒng)\OS\ClassFolder\MainRam.cs

?????文件????????465??2008-12-02?14:46??模擬操作系統(tǒng)\OS\ClassFolder\process.cs

?????文件??????36116??2009-06-25?14:49??模擬操作系統(tǒng)\OS\FileFunction.cs

?????文件??????65441??2008-12-29?17:46??模擬操作系統(tǒng)\OS\Form1.cs

?????文件??????70938??2008-12-29?17:46??模擬操作系統(tǒng)\OS\Form1.Designer.cs

?????文件??????23824??2008-12-29?17:46??模擬操作系統(tǒng)\OS\Form1.resx

?????文件???????1784??2008-12-23?18:17??模擬操作系統(tǒng)\OS\Form_CFile.cs

?????文件???????8759??2008-12-23?18:17??模擬操作系統(tǒng)\OS\Form_CFile.designer.cs

?????文件???????5814??2008-12-23?17:36??模擬操作系統(tǒng)\OS\Form_CFile.resx

?????文件????????866??2008-12-23?18:16??模擬操作系統(tǒng)\OS\Form_CMenu.cs

?????文件???????4788??2008-12-23?18:16??模擬操作系統(tǒng)\OS\Form_CMenu.designer.cs

?????文件???????5814??2008-12-23?17:36??模擬操作系統(tǒng)\OS\Form_CMenu.resx

?????文件???????5475??2008-12-29?17:10??模擬操作系統(tǒng)\OS\Form_EFile.cs

............此處省略43個文件信息