Hi once,

I've had the same problem with Internet schemas, and even using 74HC14. I think it's the way that pins are counted in plug (DB25). Because I do not change any BIOS config, and buying Dejan LPT cables, worked first time.
I've studied electronics, and I'm sure of what I've done, checked at least 10 times without any success on several PC's. Perhaps one day I will open these cables (soonest possible to make MCU and PPM dejan box !!!) and check what was wrong...

Lolopro