I asked it for Hello World and it got that wrong. It left out the exit syscall required at the end, which meant the CPU would continue executing until it hit a seg fault.

A few weeks later I found the exact blog post that ChatGPT copied from, down to the blog article explaining how the exit syscall was required and was intentionally missing from the first step as a pedagogical exercise. But of course ChatGPT won't know that.

If you know assembler, it's much easier and safer writing it yourself. If you don't don't assembler, you're doing stupid and dangerous things and should immediately stop.