变速齿轮Delphi实现_Delphi_站长学院

变速齿轮Delphi实现

[2007-11-16 00:00:00] 作者：Northz.com 来源：北方站长站

→Tags:实现 mov ebx ptr procedure Sender: TObject end word ←

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
implementation
{$R *.dfm}
procedure speed(count:word);stdcall;
const
  ExceptionUsed=$03;
var
  IDT:array [0..5]of byte;
  lpOldGate:dword;
begin
  asm
    sidt IDT
    mov ebx,dword ptr [IDT+2]
    add ebx,8*ExceptionUsed
    cli
    mov dx,word ptr [ebx+6]
    shl edx,16d
    mov dx,word ptr [ebx]
    mov [lpOldGate],edx
    mov eax,offset @@Ring0Code
    mov word ptr [ebx],ax
    shr eax,16d
    mov word ptr [ebx+6],ax
    int ExceptionUsed
    mov ebx,dword ptr[IDT+2]
    add ebx,8*ExceptionUsed
    mov edx,[lpOldGate]
    mov word ptr [ebx],dx
    shr edx,16d
    mov word ptr [ebx+6],dx
    jmp @@exit

    @@Ring0Code:
    mov al,$34
    out $43,al
    mov ax,Count
    out $40,al
    mov al,ah
    out $40,al
    iretd
  @@exit:
  end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
  speed($6000);//慢
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
Speed($1044);
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
speed($500);
end;
end.

News

info

down