Parallel port access

[BCD12]

Hello,

I am trying to reach LPT. I wrote a simple code...

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <dos.h>

#define CS 1
#define LPT 0x378

char port_data;

int main()
{

while(1)
{
outp(LPT, 0x01);
}

return 0;
}

and it doesn't work with the following error.

Compiling...
parrrrrrr.cpp
Linking...
parrrrrrr.obj : error LNK2001: unresolved external symbol _outp
Debug/oo yeahh.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

oo yeahh.exe - 2 error(s), 0 warning(s)


I really can't understand where is the error. Can you help?

Thank you

 

[Salem]

http://www.lvr.com/parport.htm

My guess is that neither your OS nor compiler is DOS, so you need to write something which accesses the port using some driver.



--

 

[zeitghost]

What compiler?
What operating system?