unit Unit1; interface uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls; type TForm1 = class(TForm) Button1: TButton; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); var ByteNum: byte; begin // 右移 shr asm mov al, 10000000B { 128 } shr al, 1 { shr 10000000 一次会得到 01000000 } mov ByteNum, al end; ShowMessage(IntToStr(ByteNum)); { 64; shr 相当于 ÷2 } end; end.
上面是DELPHI +ASM代码的一个小示例。
今天我确实写的这个代码。