Commodore Plus/4

The Commodore Plus/4 used Commodore’s TED chip for video, sound and system control, with a faster BASIC 3.5 environment than the C64.

The TED family targeted lower-cost home and educational markets but lacked C64 software compatibility.

Notable Features

• 64KB of RAM and its distinctive enclosure identify this model.
• BASIC 3.5 includes graphics, sound and disk commands.

Historical Significance

• The TED family targeted lower-cost home and educational markets but lacked C64 software compatibility.

Collector’s Notes

• Board revision, regional video standard, power supply, keyboard legends and original accessories should be recorded.
• Memory, storage, displays and expansion hardware should be documented because configurations often changed during a system’s working life.

Specifications

Technical Information
Name	Commodore Plus/4
Manufacturer	Commodore
Launched	Sunday, January 1, 1984
Discontinued	1986
Country	United States
CPU	MOS 7501 or 8501 at approximately 1.76 MHz
Units Sold
Form Factor	Keyboard computer with built-in applications
Power	External or internal mains supply according to model
Networking	Commodore serial networking and third-party network adapters where supported
Operating System	Commodore BASIC 3.5
Expansion / I/O	Cartridge, cassette, IEC serial, user/serial and two joystick ports using model-specific connectors
Keyboard	Integrated keyboard
Storage	Datasette, cartridge and serial floppy drives
Sound	Two-channel TED sound
Colours	121-colour palette
Graphics	TED character and bitmap graphics
Display	Television or monitor; 40 x 25 text
ROM	32KB BASIC 3.5 and KERNAL ROM, plus application ROM in Plus/4
RAM	64KB
CPU Speed	Approximately 1.76 MHz