Data Directives
Data Definition
| Mnemonic | Syntax | Description |
|---|---|---|
| DB | name: value1 [, value2, ...] | Define bytes(byte aligned) |
| DH | name: value1 [, value2, ...] | Define half-words(2 byte aligned) |
| DW | name: value1 [, value2, ...] | Define words(4 byte aligned) |
Examples:
db message: "Hello World", 0, 0x20, 231
dh numbers: 1000, 2000, 3000
dw stack: 0x10000
Notes:
- All string literals are automatically null-terminated
Memory Reservation
| Mnemonic | Syntax | Description |
|---|---|---|
| RESB | name: size | Reserve bytes |
| RESH | name: size | Reserve half-words |
| RESW | name: size | Reserve words |
Examples:
resb buffer: 256 ; Reserve 256 bytes
resh array: 100 ; Reserve space for 100 half-words
resw heap: 1024 ; Reserve space for 1024 words
Imports
| Mnemonic | Syntax | Description |
|---|---|---|
| INCLUDE | module_name "path" | Include module symbols |
| More details on the module System |