Monthly Archives: May 2026

LEGO 9765 Interface cable for Commodore 64/128

I recently bought a lot of old teaching materials from the 80’s, among them set 9765 that consists of an interface cable for Commodore 64/128 and an instruction booklet. The cable connects LEGO’s electronic “Interface A” from set 9750 (and 1093) with the user port on the computer. The only software included are the examples in the book.

I have scanned the book and you can get it from here (76 pages, 24 MB).

If you want to make your own cable, you can see the necessary connections here:

3 -> 2 (+5VDC)
5 -> 1 (GND)
6 -> C (PB0)
8 -> D (PB1)
10 -> E (PB2)
12 -> F (PB3)
14 -> H (PB4)
16 -> J (PB5)
17 -> 12 (GND)
18 -> K (PB6)
20 -> L (PB7)

You need one “ribbon cable with 20 pin connector” and one “Card Edge Connector socket (3.96mm)”.

(Click the picture for high resolution)

LEGO 9765 Interface-kabel til Commodore 64/128

Jeg købte fornylig en masse gammelt LEGO-undervisningsmateriale fra 80’erne, heriblandt sæt nummer 9765, som består af et interfacekabel til Commodore 64/128 og en instruktionsbog. Kablet forbinder LEGOs elektronikpult “Interface A” fra sæt 9750 (og 1093) med user-porten på computeren. Der er ikke noget yderligere software end eksemplerne i bogen.

Jeg har indskannet bogen, som kan hentes her (76 sider, 24 MB).

Hvis du har lyst til at lave dit eget kabel, kan du se de nødvendige forbindelser her:

3 -> 2 (+5VDC)
5 -> 1 (GND)
6 -> C (PB0)
8 -> D (PB1)
10 -> E (PB2)
12 -> F (PB3)
14 -> H (PB4)
16 -> J (PB5)
17 -> 12 (GND)
18 -> K (PB6)
20 -> L (PB7)

Du skal bruge et “ribbon cable with 20 pin connector” samt en “Card Edge Connector socket (3.96mm)”.

(Klik på billedet for høj opløsning)