Equivalence !

You cannot access the hardware directly on 32bit Windows platforms, so there simply is _no_ equivalent for this function - sorry that the answer is so negative, but i all i can do is to point you to the Win9x/NT DDKs (Device Driver Kits)...
Why do you need to use 'outportb()'? Maybe we can find a way to get around this...

you could use assembler to send stuff to the ports....

asm {
  mov al, 5
  mov dl, 2h
  out dl, al
}

which would write the value 5 to port 2...

-Viktor
--Ivanov

I want to access an I/O card with 8255 chips.
Can I use assembler in a window program ?

ofcourse you can use assembler,
but you must take in consideration that window handles the ports. and some other applications may also try to do the same,
in a multithreaded environment you're taking a big risk

Thanks. I will try it.

You may of course reject the answer, but this does _NOT_ affect the fact that it is true...
asm {
  mov al, 5
  mov dl, 2h
  out dl, al
}
-> EXCEPTION_PRIV_INSTRUCTION ;-)

jkr, I just tried to give something like a pseudo code and say that the individual could use Assembler.. that's all.. I've never said that the code I wrote will work just the way it is... :))

-Viktor
--Ivanov

Viktor, i agree - you can always use assembler, but certain instructions are restricted to ring 0 (i.e. kernel mode)...

To JKR,

How can I set the privilege on NT to use inp(...) ?

I have try this but it doesn't work !

  BOOL             rcCode;
  HANDLE           hToken;
  TOKEN_PRIVILEGES tkp;

  rcCode = OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,&hToken);
  if (rcCode == FALSE) return FALSE;

  LookupPrivilegeValue(NULL, SE_SECURITY_NAME, &tkp.Privileges[0].Luid);

  tkp.PrivilegeCount = 1; // One privileges to set
  tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

  AdjustTokenPrivileges(hToken, FALSE, &tkp, 0, (PTOKEN_PRIVILEGES)NULL, 0);

  if (GetLastError() != ERROR_SUCCESS) return FALSE;

You cannot - privileged instructions only work in ring0 (i.e. kernel mode), as i stated in my answer which you have chosen to reject ;-)