created: 07/16/01; small edits: 10/06/02, 06/25/03

# CHAPTER 16 — More Memory Access

This chapter discusses some more instructions that load registers (from memory) and that store registers (to memory). These instructions are used less frequently than `lw` and `sw`.

#### Chapter Topics:

- Load byte and store byte: `lb`, `lbu`, and `sb`
- Load halfword and store halfword: `lh`, `lhu`, and `sh`
- Arithmetic with less than 32 bits.

### QUESTION 1:

(Review:) What is the smallest addressable unit of main memory?