externX <namelist>The externX macro defines one or more names that will be the labels of external variables or functions.
X
Specifies the storage size or function type. This parameter can be one of the following types:
| Type | Description |
| A | Constant value declared with the EQU and = directives in a separate file |
| B | Byte |
| W | Word |
| D | Doubleword |
| Q | Quadruple word |
| T | 10 bytes |
| CP | Code pointer (one word for small and compact models) |
| DP | Data pointer (one word for small and medium models) |
| NP | Near-function pointer |
| FP | Far-function pointer |
| P | Near for small and compact models; far for other models |
namelist
Specifies the list of the names of the variables or functions.
The following examples demonstrate the usage of the externX macro:
externB <DataBase>
externFP <SampleRead>