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---
title: Commodore CBM 500 / 600 Series
categories:
- Computers
types:
- Professional Computer
origins:
- U.S.A.
years:
- '1983'
cpus:
- MOS 6509
params:
name: CBM 500 / 600 Series
image: /media/museum/photos/commodore_cbm-610_1.jpg
company: /companies/commodore
company_name: Commodore
specs:
- label: NAME
value: CBM 500 / 600 Series
- label: MANUFACTURER
value: Commodore
- label: TYPE
value: Professional Computer
- label: ORIGIN
value: U.S.A.
- label: YEAR
value: '1983'
- label: BUILT IN LANGUAGE
value: Microsoft BASIC
- label: KEYBOARD
value: Full stroke 94 key with numeric keypad and function keys
- label: CPU
value: MOS 6509 (Zilog Z80 & Intel 8088 optional)
- label: SPEED
value: 1 MHz (500), 2 MHz (600)
- label: RAM
value: 128 KB (up to 896 KB, varying according to the model)
- label: ROM
value: 28 KB
- label: TEXT MODES
value: 40 x 25 (500), 80 x 25 (600-700)
- label: GRAPHIC MODES
value: 300 x 200 (500), 512 x 512 (600-700)
- label: COLORS
value: 16 (500), Monochrome (600-700)
- label: SOUND
value: 3 voices, 9 octaves (700)
- label: SIZE / WEIGHT
value: 46 (W) x 59.5 (D) x 46 (H) cm
- label: I/O PORTS
value: IEEE-488, Serial RS-232
- label: BUILT IN MEDIA
value: Change according to the model
- label: OS
value: ROM Based (CP/M or MS DOS optional)
- label: POWER SUPPLY
value: Built-in power supply unit
- label: PERIPHERALS
value: 2 x 170 KB or 500 KB or 1 MB 5'' floppy disc unit, 8088 or Z80 card
- label: PRICE
value: £695 (500)
tabs:
- photos
- adverts
- hardware
- emulators
- links
- docs
forum_thread: 118
photos:
- title: BACK SIDE
subtitle: ''
text: Back side of a 610 model.
image: /media/museum/photos/commodore_600_back_1.jpg
adverts:
- title: ITALIAN AD
subtitle: ''
text: |-
I bellissimi...
Courtesy of **http://angelmemories.cjb.net/**
image: /media/museum/pubs/commodore_600_aditaly_1.jpg
hardware:
- title: CLOCK/CALENDAR MODULE
subtitle: ''
text: Could be connected to any PET/CBM user port. Clock and calendar were battery backed up.
image: /media/museum/hardware/commodore_pet_clockmodule_1.jpg
- title: EPROM PROGRAMMER
subtitle: ''
text: Could burn 2716 and 2732 Eprom chips.
image: /media/museum/hardware/commodore_pet_epromprog_1.jpg
- title: TNW-2000
subtitle: IEEE-488 to Serial converter
text: Thanks to **Pascal Rollin**
image: /media/museum/hardware/commodore_pet_tnw2000_1.jpg
- title: DUAL DISK-DRIVES
subtitle: Model 2040
text: This dual 5.25" floppy disk is single sided, double density and has a storage capacity of 170 Kb per disk, or 360k total. It's connected to the computer through an IEEE-488 interface and uses CBM DOS 1.0.
image: /media/museum/hardware/commodore_cbm2040-dualdisks_1.jpg
- title: 8050 DUAL DISK-DRIVE
subtitle: ''
text: |-
CBM PET Model 8050 Dual disk drive. It uses a 100 TPI single headed drive with a storage capacity of 533,248 bytes per drive. Each 8050 disk has 77 tracks, and is read/write compatible with the model 8250 disk. This compatibility is limited to one side of the diskette.
It can be used with Commodore Series 2001, Series 3000, Series 4000 and Series 8000. It uses an IEEE-488 interface.
image: /media/museum/hardware/commodore_cbm_8050_diskdrives.jpg
- title: 8250-LP DUAL DRIVE UNIT
subtitle: ''
text: The 8250-LP (for Low Profile) uses dual half-size double-side, double-density 1 MB capacity floppy drives. The main logic board is entirely different from the full-size 8250. It uses two 6502 processors!
image: /media/museum/hardware/commodore_700_8250fddunit_1.jpg
- title: 9090 HARD-DISK
subtitle: ''
text: This is a single drive non-removeable Winchester technology storage device. It features 3 platters with recording surfaces on both sides and provides 7.5 million characters of storage. A single random access file may occupy the entire capacity. It has an IEEE interface connector and a "slow blow" fuse on the back.
image: /media/museum/hardware/commodore_cbm_9090_harddisk.jpg
- title: 8023P COMMODORE TRACTOR PRINTER
subtitle: ''
text: ''
image: /media/museum/hardware/commodore_printer_8032p.jpg
emulators:
- title: Versatile Commodore 8-bit Emulator (VICE)
url: http://www.6502.org/users/andre/index.html
platform: Windows
text: ''
links:
- title: Commodore 500, 600 and 700 computers page
url: http://WWW.DAVIDVINER.COM/cbm.php
text: Interesting info
- title: Larry's PET/CBM Pages
url: http://www.portcommodore.com/petindex.php?path=main-cbmidx
text: Excellent source of information for PET/CBM computers
- title: PET index
url: http://www.6502.org/users/andre/petindex/index.html
text: Some useful info here about PET computers
- title: The Commodore CBM-II page
url: http://ca.geocities.com/SJGRAY@ROGERS.COM/CBM/
text: All things CBM-II
- title: THE Independent Commodore Library
url: http://freespace.virgin.net/ken.ross1/
text: All sorts of programs here, text files covering a wide range of subjects
- title: TPUG - Toronto PET Users Group Inc.
url: http://www.tpug.ca/
text: The Commodore PET Users Group, founded in 1979 ! (seems offline, mail us their new address if you find it)
- title: www.commodore.ca
url: http://www.commodore.ca/products/pet/commodore_pet.htm
text: Excellent site with a lot of info about Commodore computers including dedicated PET pages
- title: Web Wiz CAPTCHA
url: http://www.webwizcaptcha.com
text: Discussion about Commodore micros
docs:
- title: COMMODORE BASIC VERSION 4.0 - USER'S REFERENCE MANUAL
url: http://www.commodore.ca/manuals/default.htm
cover: /media/museum/docs/couvs/commodore_basic_4_users_reference%20manual.jpg
text: |-
[**COMMODORE BASIC VERSION 4.0 - USER'S REFERENCE MANUAL**](http://www.commodore.ca/manuals/default.htm)written by Commodore
 compiled/archived by www.commodore.ca\
 type of document : PDF\
 source : [www.commodore.ca](http://www.commodore.ca)
- title: COMMODORE PET MACHINE LANGUAGE MONITOR
url: http://www.commodore.ca/manuals/default.htm
cover: /media/museum/docs/couvs/pet_machine_language_monitor.jpg
text: |-
[**COMMODORE PET MACHINE LANGUAGE MONITOR**](http://www.commodore.ca/manuals/default.htm)written by Commodore
 compiled/archived by www.commodore.ca\
 type of document : PDF\
 source : [www.commodore.ca](http://www.commodore.ca)
related:
- /museum/commodore-cbm-700-series
- /museum/commodore-cbm-80xx
- /museum/commodore-pet-200
- /museum/commodore-pet-2001
- /museum/commodore-pet-30xx
- /museum/commodore-pet-cbm-40xx
- /museum/commodore-superpet
oc_id: 104
source:
url: https://web.archive.org/web/20230602012715/http://www.old-computers.com/museum/computer.asp?c=104
date: '2023-06-02'
---
The CBM 500 had a 40-column, 300 x 200 pixels display. Contrary to the 600 and [700](/museum/commodore-cbm-700-series/) it also had two ports for joystick, light pen and paddles.
The CBM 600 was the same as the 500 but had a 80-column display and 256 Kb RAM.
MicroSoft Basic was in ROM. Both models had an option for a second processor (8088 or Z80) to function alongside the standard 6509, the 6509 was then used for I/O, display and keyboard management. They worked under Commodore DOS or CP/M and MSDOS when the computers used the other processors.
The 500 / 600 series was mainly sold in Europe, but a few models are known to have been sold in the United States.
The model pictured here is a 610.