DCW and DCWU
DCW directive allocates one or more halfwords of memory, aligned on two-byte boundaries, and defines the initial runtime contents of the memory.
DCWU is the same, except that the memory alignment is arbitrary.
is a numeric expression that evaluates to an integer in the range -32768 to 65535.
DCW inserts a byte of padding before
the first defined halfword if necessary to achieve two-byte alignment.
DCWU if you do not require alignment.
data DCW -225,2*number ; number must already be defined DCWU number+4