The Commodore parallel cable

for Commodore 1570 and 1571 drives

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

Important notes


You need the following parts to build this cable:

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

[Commodore parallel cable for 1570 and 1571 drives]

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

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