CS208 Introduction to Computer Systems
Friday, 8 May 2026

+ Zoo questions so far

+ quick zoo advice
- use paper
- focus: how to get to ret
- range of phases: sensible ones, wth ones
- a(b,c,d) and arrays
- keep looking at the stack: x/30xw $rsp
- keep looking at registers: i r eax edx ...
    and ask "what is this reg's purpose right now?"

+ sscanf

+ call & ret
- recap of what they do
    - rip: address of current/next instruction
    - rsp: top of stack
    - (rbp: sometimes muddying the waters about the stack)
- let's watch!
    minizoo.c
- stuff right after call
    vs. stuff right before ret

+ what's next?
- processes 
    and a mini intro to operating systems
- exam 2
- bunch of short units
    - simple networking
    - virtual memory
    - maybe: threads
    - maybe: digital logic and a fleeting glimpse of architecture
    - buffer overflow (probably on takehome exam)

+ my adventure with LLMs and CMU's old sad code
- the story
- key ideas
    - bad code ports to bad code
    - tradeoffs keep existing
        somebody needs to make the call
    - simplicity
    - audience
    - ...