Ok, I just had an idea. By calculating the 900a code, I found out that the 0000 codes are actually the same, except some additional codes at the end. So I removed these(what I think are unnessecary codes) from the end, like this:

0000 0068 0022 0000 0164 00B4 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0043 0016 0016 0016 0043 0016 0043 0016 0043 0016 0043 0016 0043 0016 0043 0016 0016 0016 0043 0016 0016 0016 0043 0016 0043 0016 0043 0016 0016 0016 0016 0016 0016 0016 0016 0016 0043 0016 0016 0016 0016 0016 0016 0016 0043 0016 0043 0016 0043 0016 0043 0016 00B4

The IR code still works. So now I tried to make it repeat by just copying the one-time part to the repeat part of the code, like this:

0000 0068 0022 0022 0164 00B4 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0043 0016 0016 0016 0043 0016 0043 0016 0043 0016 0043 0016 0043 0016 0043 0016 0016 0016 0043 0016 0016 0016 0043 0016 0043 0016 0043 0016 0016 0016 0016 0016 0016 0016 0016 0016 0043 0016 0016 0016 0016 0016 0016 0016 0043 0016 0043 0016 0043 0016 0043 0016 00B4 0164 00B4 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0043 0016 0016 0016 0043 0016 0043 0016 0043 0016 0043 0016 0043 0016 0043 0016 0016 0016 0043 0016 0016 0016 0043 0016 0043 0016 0043 0016 0016 0016 0016 0016 0016 0016 0016 0016 0043 0016 0016 0016 0016 0016 0016 0016 0043 0016 0043 0016 0043 0016 0043 0016 00B4

Guess what? It works! (please don't ask why I now have a repeating power code, it is just an example. But it seems to work for all the other codes I have tested as well)

Is this the correct way to do it? Are there better alternatives? Can an expert please give his/her opinion?

BTW, I was just reading this: [Link: home.tiscali.nl], and at the end of page 7 it says: "but I have trouble with RC9200 + Onkyo DVD – it learns its IR codes as 900A mistakenly". Could the Pronto NG have the same problem, with my DVD player?

Thanks again.

Regards, Stefan.