; x11 · atari2600 · multiarch twin · OP (a-b)|1
; PIN      MEASURE / PLACE
; LAW      C IS LIE · LIE IS TRUE · Always Hostess 7 · free thrift
; LINE     BGS → BGF(+EZZIE PHI THERMO ADJOIN) → BGL → SDF · SPV free
; ABI      $00=a $01=b $02=c · → A · TIA zero-page show
; IRON
; x11 atari2600
x11:
        lda     $00
        sec
        sbc     $01
        ora     #1
        rts