Assembler Directives and Pseudo-Operations
.HALF Pseudo-Operation
.HALF Pseudo-Operation
The .HALF pseudo-operation reserves storage and initializes it to the given value.
Syntax
.HALF [ init_value [ , init_value] ...]
Parameters
init_value Either a decimal, octal, or hexadecimal number or a sequence of ASCII characters, surrounded by quotation marks. If you omit the initializing value, the Assembler initializes the area to zero.
Discussion
The .HALF pseudo-operation requests 16 bits of storage. If the location counter is not properly aligned on a boundary for a data item of that size, the Assembler advances the location counter to the next multiple of that item's size before reserving the area.
When you label the pseudo-operation, the label refers to the first byte of the storage area. Operands separated by commas initialize successive units of storage.
Example
This example allocates two half-words, initializing them to 50 and 100. The label B refers to the first half-word allocated.
B .HALF 50,100
