[amelius]

Yes, you can debug on an FPGA first, for example, allowing you to put the hardware-equivalent of a printf statement in places where you need them.

Or, you can configure all of your flipflops into a barrel shift register, so you can read out their contents serially (and shift their contents back in circularly).

But there are many more techniques.

[bramen]

Interesting. Thanks, you've given me a few things to read up on.