I was inspired byt this one:
http://www.psxdev.net/forum/viewtopic.php?f=60&t=372
So i managed to buy one link cable, also get crappy psx, just to desolder link-input and get usb to rs232c programmer.
Here are things i got:
This is AVR ISP USB programmer [someone at the topic about hitmen app was saying about TTL signal capable programmer but im not sure, that this one will be ok. It is used to program ATMegs]
Desoldered serial I/O with its pinout ofcourse
And brand new link cable of course
What i want to do is, without and single damage build psx programmer. I could put everything on pcb [solder psx link i/o and make few lines to 8 pins then, connect these ones with the programmer's ones, so i could get the same effect as in the topic i linked at the top

PlayStation <=> (psx serial cable) <=> [desoldered serial I/O] -> pins connected to the programmer's pins <=> PC [by programmer's USB port]
I mean, how do I connect pins from serial to programmer? There's no doc about both of them :/.
I hope everyone understands me


Regards.