; add - Add without carry
.macro  add     Arg1, Arg2
        clc
        .if .paramcount = 2
                adc     Arg1, Arg2
        .else
                adc     Arg1
        .endif
.endmacro

; sub - subtract without borrow
.macro  sub     Arg1, Arg2
        sec
        .if .paramcount = 2
                sbc     Arg1, Arg2
        .else
                sbc     Arg1
        .endif
.endmacro