I'm just gonna come out and say it this ideia came from either Claude or ChatGPT. I thought the GBA was the easiest console to write an emulator for, but after talking to either one of those LLM I learned about Chip 8. All I wanted was to write an emulator that I could make some post processing on the output.
What makes CHIP-8 great for babby's first emu is the fact that it's not a real CPU or system architecture; it's a VM to make video games for the Cosmac VIP 1970s hobbyist computer easy to write.
Don't worry about your use of an LLM. If it spits out something that gives you a holy-crap idea, that's great. Things get iffy when you lean on the LLM to do the work.