Hello Heinrich,

I had the same problem this year. I found a good description of the
parallel port on the net:

http://www.senet.com.au/~cpeacock/parallel.htm

there are essentially 3 different modes of operations:
SPP (Standard Parallel Port)
EPP (Enhanced Parallel Port)
ECP (Extended Capabilities Port)

I used the ECP-Port: Attention, you have to enable it in the BIOS.

The programming is not as simple as that. No drivers are supplied with
Delphi. I did everything with low-level port access, which is not
allowed under WindowsNT, but only possible with Windows95.

Another proposition is to use a SerialComport (very simple and good
programming under Delphi) and to connect a PIC16C65 or so that
transforms to 8 Bit Input and Output.
Contact me, I could do the programming of the PIC.
Advantages:
only three wire connection between computer and roboter
distance up to 15m using RS232 and up to 1200m using RS485
simple programming under Delphi

Disadvantage:
speed is not as high with a serial link (it depends on your application)

I have good experience with Delphi and 9.6 kBauds (full-duplex) with
PIC16C6x.

Christian Henny
he...@imt.unine.ch

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

E-Mail hwys...@swissonline.ch