normal, then LPT doesnt need any irqs

The question wasn't that wrong, though.

I've assumed SNESKey would just use printer status pins for reading data, but pin 2 is DATA 0 and Pin 3 is DATA 1.
https://en.wikipedia.org/wiki/Parallel_port

Aren't those output pins, normally? In an unidirectional configuration?
I mean, if a PC boots up in normal mode, aren't they set to output?

I vaguely recall that a GB cartridge dumper had a warning note that said the LPT port must be set to a specific mode.

As for the IRQ, no harm is done normally, I think. DOS software generally doesn't use IRQs for LPT ports.
OS/2 is one of the few exceptions and uses IRQs for printing, I believe.

Edit: Ah yes, I've checked the circuits.ini, so this makes sense.
Pin 10 is a status line (ACK) to read back the SNES pad data. Pin 2+3 are outputs.
So normal LPT mode seems fine, too, indeed.

[snes1]
clock = 2
reset = 3
data = 10
power = 7, 8, 9

So my controller has ECP/EPP/Output only options I can also choose in ECP mode the DMA or disable it.
I tryed both ECP and EPP with different Port address like 278 and 378.
When i start a game with the sneskey command i got no controller shown ingame.
For example Keen4. So ECP is for Printer and Scanner and EPP for other stuff. But the question is what does sneskey use.