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