PIO 2 B - Datenbus
------------------ 
PIO      B    B    B    B    B    B    B    B
         7    6    5    4    3    2    1    0

Bele-    D    D    D    D    D    D    D    D
gung     7    6    5    4    3    2    1    0

Pin     17   16   15   14   13   11   10    9


PIO 3 A - Adressbus - NWT
-------------------------
PIO      A    A    A    A    A    A    A    A
         7    6    5    4    3    2    1    0

Bele-    A    A    A    A    A    A    A    A
gung     7    6    5    4    3    2    1    0

Pin      1    2    3    4    5    6    7    8


PIO 3 A - Adressbus - HWT
-------------------------
PIO      B    B    B    B    B    B    B    B
         7    6    5    4    3    2    1    0

Bele-    /    /    /    /    A    A    A    A
gung                        11   10    9    8

Pin      /    /    /    /   R6   19   22   23


PIO 4 A - Steuerbus
-------------------
PIO      A    A    A    A    A    A    A    A
         7    6    5    4    3    2    1    0

Bele-    /    /    /   16/  UPR  22   /OE  /CE
gung                   32   /0   /5          

Pin      /    /    /    /    /    /   R2   18