"I had no idea that RTL like VHDL/Verilog were FP."
They really aren't. I mean, not syntax-wise at least. Conceptually there are similarities, but really they are process programming, if anything. Processes are everywhere. Not OS processes, not OS threads, basically green threads. It's really asynchronous event-driven programming. Each processes models a distinct bit of hardware, with all the bits of hardware running in parallel. If you've done node or python's twisted then you are actually in a good place to understand. It's tricky though because there are several different language constructs for creating processes and it's all shared memory to communicate between them. If you aren't careful you don't always realize that you've created yet another process (the assign keyword tricks people). If you get outside the subset of the language that is synthesizable (able to be translated directly into hardware), like for simulations, you get to deal with race conditions and everything.
They really aren't. I mean, not syntax-wise at least. Conceptually there are similarities, but really they are process programming, if anything. Processes are everywhere. Not OS processes, not OS threads, basically green threads. It's really asynchronous event-driven programming. Each processes models a distinct bit of hardware, with all the bits of hardware running in parallel. If you've done node or python's twisted then you are actually in a good place to understand. It's tricky though because there are several different language constructs for creating processes and it's all shared memory to communicate between them. If you aren't careful you don't always realize that you've created yet another process (the assign keyword tricks people). If you get outside the subset of the language that is synthesizable (able to be translated directly into hardware), like for simulations, you get to deal with race conditions and everything.