unit iiro8u;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, Buttons, Registry, ExtCtrls ;

type
  TMainFrm = class(TForm)
    Label5: TLabel;
    GroupBox1: TGroupBox;
    ExitButton: TBitBtn;
    Memo1: TMemo;
    CardName: TLabel;
    BeginSample: TButton;
    RunTimer: TTimer;
    RelayOut: TPanel;
    RelayRead: TPanel;
    OptoIn: TPanel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    IsaLabel: TLabel;
    IsaEdit: TEdit;
    AddressLabel: TLabel;
    AddressLabel1: TLabel;
    procedure ExitButtonClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
   // procedure AddressListChange(Sender: TObject);
    procedure RunTimerTimer(Sender: TObject);
    procedure BeginSampleClick(Sender: TObject);
    procedure FormActivate(Sender: TObject);

  private
  { Private declarations }
    DriverRegistry:TRegistry;
  public
  { Public declarations }
  end;

const
//  myKey = 'System\CurrentControlSet\Services\NTioPCI\Parameters';
  myKey = 'Software\PCIFind\NTioPCI\Parameters';

var
  MainFrm: TMainFrm;
  Address : WORD;
  RunFlag:Boolean;

implementation

uses ACCES32;

type
  TPCI_COMMON_CONFIG = record
     VendorID : word;
     DeviceID : word;
     Command : word;
     Status : word;
     RevisionID : byte;
     ProgIf : byte;
     SubClass : byte;
     BaseClass : byte;                        
     CacheLineSize : byte;
     LatencyTimer : byte;
     HeaderType : byte;
     BIST : byte;
     BaseAddresses : Array[0..5] of longint;
     Reserved1 : Array[0..1] of longint;
     RomBaseAddress : longint;
     Reserved2 : Array[0..1] of longint;
     InterruptLine : byte;
     InterruptPin : byte;
     MinimumGrant : byte;
     MaximumLatency : byte;
  end;
  //global variables for internal use
var
  buf: array [0..63] of TPCI_COMMON_CONFIG;
  Siz: Integer = 8;

{$R *.DFM}

procedure TMainFrm.FormCreate(Sender: TObject);
var
    num, i: Integer;
    found: Boolean;
begin
    found := false;
    DriverRegistry:=TRegistry.Create;
    DriverRegistry.RootKey:=HKEY_LOCAL_MACHINE;
    RunFlag:=True;

   if (InPortB($61) = $AA55) then begin
      Application.MessageBox('ACCESNT.SYS not detected. Please copy ACCESNT.SYS into [NT]/system32/drivers and re-run this sample.', 'Warning', IDOK);
   end;
    
    try
      DriverRegistry.OpenKey(MyKey, False);
      num := DriverRegistry.ReadInteger('NumDevices');
    except
      num := 0;
    end;
    if (num > 0) then
        DriverRegistry.ReadBinaryData('PCICommonConfig',buf,num*sizeof(TPCI_COMMON_CONFIG));
    for i := 0 to num-1 do
    begin
        if found then Break;
        with Buf[i] do
        begin
            case (DeviceID) of
            $0F00:begin
                CardName.Caption:='PCI-IIRO-8 Digital Input/Relay Output Card';
                AddressLabel.Caption:='$'+IntToHex(BaseAddresses[2] AND $FFFE,4);
                Label5.Caption:='Win95/NT Sample';
                Siz := 8;
                found := true;
                end;
            $0F08:begin
                CardName.Caption:='PCI-IIRO-16 Digital Input/Relay Output Card';
                AddressLabel.Caption:='$'+IntToHex(BaseAddresses[2] AND $FFFE,4);
                Label5.Caption:='Win95/NT Sample';
                Siz := 16;
                found := true;
                end;
            $0DC8:begin
                CardName.Caption:='PCI-IDIO-16 Solid-State Input/Output Card';
                AddressLabel.Caption:='$'+IntToHex(BaseAddresses[2] AND $FFFE,4);
                Label5.Caption:='Win95/NT Sample';
                Siz := 16;
                found := true;
                end;
            end;{case}
        end;{with}
    end;{for}
    if found then begin
      RelayOut.Caption := StringOfChar('0', Siz);
      RelayRead.Caption := StringOfChar('0', Siz);
      OptoIn.Caption := StringOfChar('0', Siz);
    end
    else
    begin
        Label5.Caption:='Win95/NT IIRO-8/16 Sample';
        CardName.Caption:='No Card Found In Registry';
        Memo1.Lines.Clear;
        Memo1.Lines.Append('No Card Found In Registry.');
        Memo1.Lines.Append('This may mean an ISA IIRO-8 is installed, no card is installed, or that NTioPCI.SYS is not installed.');
        Memo1.Lines.Append('If you have an ISA IIRO-8 card installed, you may continue running the sample ' +
            'by entering the card''s Base Address in the edit box above and continuing as normal.');
        Memo1.Lines.Append('If you have a PCI card installed, please make sure you have run PCIFind.EXE.');
        IsaEdit.Visible := true;
        IsaLabel.Visible := true;
        AddressLabel.visible := false;
        AddressLabel1.visible := false;
        RunFlag:=False;
    end;
    if RunFlag then
        Address:=StrToInt(AddressLabel.Caption);
    DriverRegistry.Free;
end;

procedure TMainFrm.ExitButtonClick(Sender: TObject);
begin
    Close;
end;

procedure TMainFrm.RunTimerTimer(Sender: TObject);
const
   value:array[0..2] of LongWord=(0,0,0);
   i:Integer=0;
var
   j:integer;
   msg: String;
begin
    value[0]:=1 shl i;
    OutPortB(Address,value[0]);
    value[1] := InPortB(Address);
    value[2] := InPortB(Address+1);
    if Siz > 8 then begin
      OutPortB(Address + 4, value[0] shr 8);
      value[1] := value[1] + InPortB(Address + 4) shl 8;
      value[2] := value[2] + InPortB(Address + 4 + 1) shl 8;
    end;
    inc(i);
    i := i mod Siz;
    msg:=StringOfChar('0', Siz);
    for j:=0 to Siz-1 do
        msg[Siz-j]:=chr(ord((value[0] and (1 shl j))>0)+$30);
    RelayOut.Caption := msg;
    for j:=0 to Siz-1 do
        msg[Siz-j]:=chr(ord((value[1] and (1 shl j))>0)+$30);
    RelayRead.Caption := msg;
    for j:=0 to Siz-1 do
        msg[Siz-j]:=chr(ord((value[2] and (1 shl j))>0)+$30);
    OptoIn.Caption := msg;
end;

procedure TMainFrm.BeginSampleClick(Sender: TObject);
begin
    if not RunFlag then
        Address := StrToInt('$'+IsaEdit.Text);

    if RunTimer.Enabled=True then Begin
        RunTimer.Enabled:=False;
        BeginSample.Caption:='Perform I/O';
    end else
    begin
        RunTimer.Enabled:=True;
        BeginSample.Caption:='Stop I/O';
    end;
end;

procedure TMainFrm.FormActivate(Sender: TObject);
begin
    if not RunFlag then
        FocusControl(IsaEdit);
end;

END.