asm VS x86doc

I couldn't read that book totally. But why not follow 0xAX's guide? The examples are on NASM, too.

You can use nasm. Setup WSL2 if you want to follow 0xAX's examples

No this is just false. They are not being converted to machine code. But maybe we are getting tripped up on language here. Machine code, to me (and everyone else with a background in computer science) means something specific -- something like x64: https://www.felixcloutier.com/x86/ . This is absolutely not the representation that is being used for prompts or anything like it.

To understand the instructions themselves, I mean all instructions nothing beat the Intel manual but you probably don't want to read it for such use case. This less complete reference might be better suited for you: https://www.felixcloutier.com/x86/

Meanwhile here's x86. There's roughly one thousand instructions if you ignore various size prefixes/suffixes and many more if you don't.

I don't think CS 261 has an online posted anything available prior to you doing the class, but I could be wrong. But here's a gift from me to you that you'll want for the class: https://www.felixcloutier.com/x86/

As far as I know, this website has all of the instructions and how to use them.

I recently got interested in developing low-level stuff, like kernels, operating systems, and others. So, I want to create a disassembler for learning how machine code/assembly code in x86 is truly like. While trying to find documentation for the x86 platform, I only found confusing documentation that didn't help me reach my goal. Do you guys have any websites / documents that helped you create a disassembler? Any suggestions are welcome.