;Vind huidige slotcode in page 1.


        IN    A,(0A8H)
        RRA
        RRA
        AND   3
        LD    B,A
        ADD   A,0C1H
        LD    H,0FCH
        LD    L,A             ;!A bit 7=1
        AND   (HL)
        JP    P,JJ0
        IN    A,(0A8H)        ; Slot is uitgebreid
        LD    C,A
        RLCA
        RLCA
        AND   0FCH
        OR    B
        RRCA
        RRCA
        OUT   (0A8H),A
        LD    A,(0FFFFH)
        CPL
        AND   12
        ADD   A,B
        OR    128
        LD    B,A
        LD    A,C
        OUT   (0A8H),A
JJ0:    LD    A,B
D   12
        ADD