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PET
Commodore • 1977

Launched ByCommodore
Type8-bit Microcomputer
LaunchJanuary 1977
Discontinued1987


Commodore were a company previously known for their calculators, and had acquired chip company, MOS in 1976 to ensure they had a steady supply of integrated circuits for them. MOS's Chuck Peddle became Commodore's chief engineer and persuaded Commodore head, Jack Tramiel to enter into the microcomputer market, and the PET was born.

The Commodore PET was part of what BYTE Magazine dubbed the "1977 Trinity", alongside the Apple II and Tandy's TRS-80.

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Commodore PET 2001 computer

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Popular PET games

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PET Emulation

Emulating the PET can be done using the VICE emulator, which is available on many platforms and as well as the PET, will also emulate all of Commodore's 8-bit machines. One thing to be aware of when emulating the PET is that all the numbers were in the numeric keypad (there wasn't a separate row on the top of the main keyboard), so if you find that numbers aren't working, try the numeric keypad. (If you have one... )

System Emulator Notes
Windows / Mac OS / Linux MAME/MESS Preliminary Support. Setname: pet
Windows / MacOS / Linux / more VICE Also emulates VIC-20, C64, Plus/4 and C128

Emulator information last updated 1st April 2020

PET Tech Specs and further details

Name PET
Origin United States
Processor MOS 6502
Developed by Chuck Peddle, John Feagans, Bill Seiler
Memory 4K, 8K, 16K, 32K, 96K RAM depending on model
Display Output Built-in monitor
Display Size (characters) 40x25 (lo-res), 80x25 (hi-res)
Colours Monochrome
Audio Beeper
Storage Cassette, 8" Floppy Disk, 5.25" Floppy Disk
Input Built-in Keyboard
Cost $795 at launch
Additional Names Known as CBM in some parts of Europe due to Philips having a trademark on the name PET
Models PET 2001, PET 4000, SuperPET 9000
Dedicated Publications Commodore PET Users Club Newsletter, PET Gazette, The PET Paper

PET Resources