This directives allocate a block of memory which is size words in length. Size must be absolute and defined during pass 1.
Fill specifies the value to which each word in the block is set. This value may be absolute or relocatable, but may not be complex.
If this directive is given a label it refers to the address of the first byte of data and is assigned word type.
This directive is only valid within ROM type sections.
Only one line of data will appear on the output listing.