Data Declaration
ä Reserve and initialize memory locations
ä Can define symbolic labels (names) for memory
locations
ä Value of the label is a memory address
ä General form LABEL TYPE OPERAND
ä LABEL :legal characters are alphanumeric + [‘-’
| ‘@’ | ‘$’ | ‘?’], cannot start with a digit
ä TYPE: DW for a word, DB for a byte
ä OPERAND: one or more definitions separated
by commas
ä EX:
ä X   DW   0
ä Y   DW   -1
ä Z     DB   5
ä Hi   DB   ‘Hello’