mport.pas

《Delphi7编程100例》代码,书配资料

unit MPort;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, Port95;

type
  TForm1 = class(TForm)
    GroupBox1: TGroupBox;
    Edit1: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Edit2: TEdit;
    Label3: TLabel;
    Label4: TLabel;
    Button1: TButton;
    GroupBox2: TGroupBox;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    Edit3: TEdit;
    Edit4: TEdit;
    Button2: TButton;
    CheckBox1: TCheckBox;
    CheckBox2: TCheckBox;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var
  Address: Word;
  B: Byte;
  W: Word;
begin
  Address := StrToInt('$' + Edit1.Text);
  if CheckBox1.Checked then
  begin
    W := PortW[Address];
    Edit2.Text := IntToHex(W, 4);
  end else
  begin
    B := Port[Address];
    Edit2.Text := IntToHex(B, 2);
  end;
end;

procedure TForm1.Button2Click(Sender: TObject);
var
  Address: Word;
  B: Byte;
  W: Word;
begin
  Address := StrToInt('$' + Edit3.Text);
  if CheckBox1.Checked then
  begin
    W := StrToInt('$' + Edit4.Text);
    PortW[Address] := W;
  end else
  begin
    B := StrToInt('$' + Edit4.Text);
    Port[Address] := B;
  end;
end;

end.