.XWORD or .DX

Directives that specify 24 bit values of the resulting code. According to Convention 6502, the least significant byte is placed first, followed by more significant bytes.

Syntax:

[<label>[:]] .DX expr {  , expr }
[<label>[:]] .XWORD expr { , expr }

Example:

alpha:    .DX $123456, 0    ; will generate $56, $34, $12, 0, 0, 0
beta:     .XWORD alpha
          .XWORD alpha-1, beta