#8 bit computing

I'm working on a little project (I'll say more later I just want to get a little further on before I give anyone's hopes up <- She says as if she didn't sign up for a circuit design class specifically for this project and has spent months planning) but I've been spending ALL DAY designing a custom 8-bit counter that can handle io/jumps (say the counter is at 4 and I send an interrupt signal for it to jump to 24) ONLY TO FIND AN IC THAT ALREADY DOES THAT!!