You should follow these instructions if you want to connect the cable directly onto the periphery chip in the drive.

Important notes

• On circuit diagrams, plugs are displayed as viewed from the back side, the solder side. Chips are displayed as viewed from above; also, see the small semicircular cut for finding the correct orientation. When in doubt, see the corresponding description on the legend page.

Construction

You need the following parts to build this cable:

• One solderable user port plug

• A shielded or unshielded 10-wire cable of, preferably, at most 2 meters

Step 1. Solder one end of the cable right onto the CIA periphery chip inside the drive.

Step 2. Solder the other end of the cable onto the user port plug. You should have the following connections:

      CIA      
User port plug 

    10, PB0    
    C, PB0     

    11, PB1    
    D, PB1     

    12, PB2    
    E, PB2     

    13, PB3    
    F, PB3     

    14, PB4    
    H, PB4     

    15, PB5    
    J, PB5     

    16, PB6    
    K, PB6     

    17, PB7    
    L, PB7     

    24, FLAG   
    8, PC2     

    18, PC     
    B, FLAG2   

 not connected 
    A, GND     

Circuit diagram

You can find the description of all parts used on the diagrams at the legend page.

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