Commodore PET/CBM

The PET (Personal Electronic Transactor) was a home-/personal computer produced by Commodore starting in 1977.

Overview

PET 2001 series / 2001-N & -B series, CBM 3000 series

  • CPU: 6502, 1 MHz
  • RAM: 4 or 8 KB / 8, 16, or 32 KB
  • ROM: 18 KB, including BASIC 1.0 / 20 kB, including BASIC 2.0
  • Video: discrete TTL video circuit, 9" monochrome monitor, 40×25 character display
  • Sound: none / single piezo "beeper" (optional external speaker driven by MOS 6522 CB2 pin)
  • Ports: 2 MOS 6520 PIA, MOS 6522 VIA, 2 Datassette (1 used / 1 on the back), 1 IEEE-488
  • Notes: 69 key chiclet keyboard and built-in Datassette / full-sized, full-travel keyboard, no built-in Datassette

PET 4000 series / CBM 8000 series

  • CPU: MOS 6502, 1 MHz
  • RAM: 8, 16, or 32 kB / 32 or 96 kB
  • ROM: 20K, including BASIC 4.0
  • Video: MOS 6545, 9" or 12" / 12" monochrome monitor, 40×25 / 80×25 character display
  • Sound: single piezo "beeper" (optional external speaker driven by MOS 6522 CB2 pin)
  • Ports: 2 MOS 6520 PIA, MOS 6522 VIA, 2 Datassette ports (1 on the back), 1 IEEE-488
  • Notes: basically an upgraded 2001 / basically a 4000 with 80 columns and slightly different keyboard with smaller (11 key) numeric pad

SuperPET 9000 series

  • CPU: MOS 6502 and Motorola 6809, 1 MHz
  • RAM: 96 KB
  • ROM: 48 KB, including BASIC 4.0 and other programming languages (Waterloo MicroAPL, MicroFORTRAN, MicroBASIC, MicroPASCAL, MicroCOBOL)
  • Video: MOS 6545, 12" monochrome monitor, 80×25 character display
  • Sound: single piezo "beeper" (optional external speaker driven by MOS 6522 CB2 pin)
  • Ports: MOS 6520 PIA, MOS 6522 VIA, MOS 6551 ACIA, 1 RS-232, 2 Datassette ports (1 on the back), 1 IEEE-488
  • Notes: basically an 8000 with ROMs for programming languages, it also had three character sets, and an RS-232 for use as a terminal

Commodore PET/CBM games