Commodore 64

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Contents

Specifications

Memory map

Hardware

pinouts

Expansion port

TV out

RCAPhono.png

Pin Desc
1 Signal ground
2 UHF video signal

Audio/video

Din8.png

Pin Desc Job
1 Luminescence luminance, video y-signal, brightness
2 Gnd 0v
3 Audio out
4 Composite video out. Includes colour signal
5 Audio in.
6 - Not connected.
7 +5v Not alwasys connected.
8 Chrominescence Colour signal.

Serial

DIN6.png

Pin Desc Job
1 SERIAL SRQ Serial service request.
2 Gnd Signal ground
3 Serial ATN Device needs servicing...
4 Serial Clk Clock (Bi-directional)
5 Serial data Data (Bi-directional)
6 Serial Reset Reset.

see https://www.c64-wiki.com/index.php/Serial_Bus

Cassette

The top and bottom pins of the connector are joined.

2x6edgeconnector.png

Pin Desc
1 Signal ground
2 +5v power
3 Motor
4 Read
5 Write
6 Sense

Userport

Gameport

Both gameports have the same pinout... Note, due to internal hardware, Most games will prefer to use Gameport 2 rather than Gameport 1.

Looking at the cable:

     1 2 3 4 5
  |-------------|
   \ o o o o o /
    \ o o o o /
     ---------
      6 7 8 9
Pinout
Pin # Joystick Paddle light pen
1 /up n/c n/c
2 /down n/c n/c
3 /left Paddle fire X n/c
4 /right Paddle fire Y n/c
5 n/c Y pot n/c
6 /button Light pen in
7 +5v max 100ma
8 ground
9 n/c X Pot n/c

Power

Din7.png

(At the cable connector...)

Pin Desc Job
1 Gnd
2 Gnd (for the 5v supply)
3 Gnd
4 +5v (OR n/c)
5 +5V 7.5A
6 9vAC in (-)
7 9vAC in (+)