I've been trying to learn 32-bit Intel x86 nasm syntax assembly on my Linux OS, and I've run into a question about the four general purpose 32-bit registers.
From what I've been thinking, eax was a 32-bit register that was supposed to be used with the 16-bit register ax, which was subdivided into ah (upper 8 bits), and al (lower 8 bits). And the same with ebx, ecx, and edx.
However after reading a quick article, I've become sort of confused.
Is the 32-bit register composed of the 16-bit register (which in turn is composed of the two 8-bit registers) with an additional 16-bits added on?
So far from what I've read on Google, all the results say is what they're used for, not their actual composition.