Is there any one having an idea how to solve my problem?

I am trying to control some kind of robot system using the parallel port.

On the robot side I have 8 output lines and 8 input lines

Now my question can I access each single line of the PC parallel port ?
Can any one give me an example how to do that with Turbo Pascal?

Since I am not very experienced in developing such kind off software I hope
some one can give me some good advise

Thanks Henry Wyssen

Var PortAddress: Word;
       Status: Integer;

 "<> On the robot side I have 8 output lines and 8 input lines

Wouldnt be a{*word*106} smith kit by any chance would it?

Luke Peterson,
Four Dimensional Technologies (4DT)

The date  Fri, 15 Aug 1997, the time 10:49:28,  Heinrich Wyssen sipped
the last dregs of cold coffee and, smirking, hit the return key........

LPT1 &H378        &H379        &H37A
LPT2 &H278        &H279        &H27A

bit  line         line         line
---  ----        ------       ------
0    D0          unused    NOT out0
1    D1          unused    NOT out1
2    D2          unused        out2
3    D3           in3      NOT out3
4    D4           in4         unused
5    D5           in5         unused
6    D6           in6*        unused
7    D7       NOT in7         unused

As you can see you only have 5 inputs, input 7 is inverted and in6(*)
can generate an interrupt (this is the printer acknowledge bit).
you can access i/o from here directly using  port[address].
If you want 8 inputs you'll have to use some external logic to multiplex
the input lines.

I've some other useful stuff I've accumulated on the subject including a
routine for handling the In6 interrupt, this routine is in C so I'll
email it to you (and anyone else that wants it) but could easily be
converted to Pascal.