ORG              Assign location counter                            Directive

  ORG expression

    Sets the assembler's location counter to expression.

    expression can't contain any forward-referenced symbol names. It can
    either be a constant or an offset from a symbol in the current segment
    or from the current location counter.

    You can use the ORG directive to connect a label with a specific
    absolute address.

    You can back up the location counter before data or code that has
    already been emitted into a segment. You can use this to go back and
    fill in table entries whose values weren't known at the time the table
    was defined. Be careful when using this technique; you might
    accidentally overwrite something you didn't intend to.

    Example:    segment bios_data at 0040h
                        org 6ch
                        sys_time dd ?
                ends