;; test addition and substraction
;  with direct addressing...
LDA $FE
ADD $01 ; $FF
ADD $01 ; $00 + CF=1
ADD $01 ; $01 + CF=0
SUB $01 ; $00 + CF=0
SUB $01 ; $FF + CF=1
;  and with indirect...
LDA $01
STO $00
LDA $FE
ADD ($00) ; $FF
ADD ($00) ; $00 + CF=1
ADD ($00) ; $01 + CF=0
SUB ($00) ; $00 + CF=0
SUB ($00) ; $00 + CF=1
END