I picked up a Commodore 64 that came with the guidebook/developer manual and it’s honestly inspiring.

The fact that it comes with the complete assembly language, circuit diagrams, and BASIC language reference is something you just don’t see today.

Being able to write whatever in whichever places in memory makes it more of a tool fostering creative expression.

Honestly, before reading through those manuals I never really needed to consider having to implement multiplication in terms of addition instructions.

Even though those are basic properties of arithmetic, it’s easy to take for granted.