mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-04 13:20:19 +01:00
104 lines
2.1 KiB
ObjectPascal
104 lines
2.1 KiB
ObjectPascal
{
|
|
$Id$
|
|
This file is part of the Free Pascal run time library.
|
|
Copyright (c) 1998 by Michael Van Canneyt
|
|
member of the Free Pascal development team
|
|
|
|
See the file COPYING.FPC, included in this distribution,
|
|
for details about the copyright.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
**********************************************************************}
|
|
|
|
Unit ports;
|
|
|
|
{$mode objfpc}
|
|
|
|
{ Implements the
|
|
port[] portw[] and portl[]
|
|
constructs using Delphi classes }
|
|
|
|
Interface
|
|
|
|
type
|
|
tport = class
|
|
protected
|
|
procedure writeport(p : longint;data : byte);
|
|
function readport(p : longint) : byte;
|
|
public
|
|
property pp[w : longint] : byte read readport write writeport;default;
|
|
end;
|
|
|
|
tportw = class
|
|
protected
|
|
procedure writeport(p : longint;data : word);
|
|
function readport(p : longint) : word;
|
|
public
|
|
property pp[w : longint] : word read readport write writeport;default;
|
|
end;
|
|
|
|
tportl = class
|
|
Protected
|
|
procedure writeport(p : longint;data : longint);
|
|
function readport(p : longint) : longint;
|
|
Public
|
|
property pp[w : Longint] : longint read readport write writeport;default;
|
|
end;
|
|
|
|
|
|
{ Non-Instantiaded vars. As yet, they don't have to be instantiated,
|
|
because there is no need for 'self' etc. }
|
|
|
|
var
|
|
port,
|
|
portb : tport;
|
|
portw : tportw;
|
|
portl : tportl;
|
|
|
|
|
|
implementation
|
|
|
|
uses linux;
|
|
|
|
{ to give easy port access like tp with port[] }
|
|
|
|
procedure tport.writeport(p : Longint;data : byte);
|
|
|
|
begin
|
|
linux.writeport (p,data)
|
|
end;
|
|
|
|
function tport.readport(p : Longint) : byte;
|
|
|
|
begin
|
|
linux.readport (p,Result);
|
|
end;
|
|
|
|
procedure tportw.writeport(p : longint;data : word);
|
|
|
|
begin
|
|
linux.writeport (p,data)
|
|
end;
|
|
|
|
function tportw.readport(p : longint) : word;
|
|
|
|
begin
|
|
linux.Readport(P,Result);
|
|
end;
|
|
|
|
procedure tportl.writeport(p : longint;data : longint);
|
|
|
|
begin
|
|
linux.writeport (p,data)
|
|
end;
|
|
|
|
function tportl.readport(p : longint) : longint;
|
|
|
|
begin
|
|
Linux.readport(p,Result);
|
|
end;
|
|
|
|
end. |