The .dw and .word statements are used to define a series of 16 bit data word values. The values must be in the range 0 to 0xffff.
        [<label>] .dw   <expr> [, <expr> [, <expr> ...]]
        [<label>] .word <expr> [, <expr> [, <expr> ...]]

                .dw     1,2,3
BEWARE: defining words in the code section of a CPU that has a program counter that counts in words will cause the length of the block of data to be reported as half the expected size. This will not affect the data stored, just the observed length.