ALIGN            Aligns on specified boundary                       Directive

ALIGN boundary

Rounds up the location counter to a power-of-two address boundary (2,
4, 8, ...).

You can't reliably align to a boundary that is more strict than the
segment alignment in which the ALIGN directive appears.

Example: ALIGN 4 ; Align to DWORD boundary for 386+
BigNum DD 12345678