Acess to hardware in W2000/NT through c++ dll in delphi...

[jesper]

hi, i have very big (for me) problem. i want to write dll in c++ which i can use to acces to hardware in win2000.
in W95/98 i used two functions in delphi - GetPort and SetPort for writing and reading from address. But if i want run this prog in win2000, it appears "Privileg instruction".

function GetPort( P : WORD ) : Byte; assembler;

asm

MOV DX, P;

IN AL, DX;

end;

procedure SetPort( P : WORD; Value : Byte ); assembler;

asm

MOV DX, P;

MOV AL, Value;

OUT DX, AL;

end;

please, do you know how to let my program run correctly ??????

Thanks in advance. Standa

[parksie]

Win2000 is designed for stability, so direct hardware access is forbidden. You'll need to use the API -- see MSDN for details.

[jesper]

Yes i know about Win2000 stability. But, can yuo say me something more concretly ???

[parksie]

You're using port access, so obviously you need specific hardware access. What hardware is it? NT provides APIs for all the different hardware devices.

[jesper]

thank you, but API ??
i need only to send one byte to hardware port and receive very small value. It is old ISA card. Where can i find it in MSDN???

[parksie]

I really can't help much further than point you at MSDN You might want to look at the driver development kit for NT, since drivers are allowed direct hardware access (obviously ). If you wrote a driver for your card then you'd be able to use it. What card is it?

[jesper]

it is very simple A/D convertor.....

[parksie]

Supplier? Manufacturer? Model number?