TruePosition Senior Test Engineer interview questions

It was a while back and I don't remember much. I believe the interview went well, I got the job. I beleive I met with the hiring manager and director. Manager asked some questions, then I got a tour of the company where by chance I ended up assisting a technician that wass troubleshooting a minicomputer PDP-8A on an Board ICT or functional tester. I remember issue had to do the IRQ, Interupt line