;; Pseudo-instruction from 'nasm' that is not available for 'ca65'. An empty
;; implementation is actually quite accurate, as it's just a way for 'nasm' to
;; perform extra checks when programmers want to explicitly make the code fall
;; through.
.ifndef __NASM__
    .macro __fallthrough__ arg
        ;; Nothing to do.
    .endmacro
.endif