The support I needed had to do with '89ISP In System Programmer', which costed me 50 Euro and came with a lousy manual. I found, that reset signal did not fullfill datasheet requirements and that certain handling procedures can even destroy the micro. So, what I wanted was not just support, I wanted to tell them that their programmer seems to have a bug. So, I would have helped them finally. But the only reaction was deadly silence. Maybe they know very well that their ISP programmer is buggy and this was the reason why they didn't want to get in contact with me??

Kai