| Component | Length | Example |
|---|---|---|
byte | 8 bits | 0xab |
word | 16 bits - 2 bytes | 0xabcd |
double word (dword) | 32 bits - 4 bytes | 0xabcdef12 |
quad word (qword) | 64 bits - 8 bytes | 0xabcdef1234567890 |
db | 1 byte | define byte |
dw | 2 bytes | define word |
dd | 4 bytes | define double word |
dq | 8 bytes | define quad word |
| Sub-register | Data Type |
|---|---|
al | byte |
ax | word |
eax | dword |
rax | qword |