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---
title: Commodore CBM 700 Series
categories:
- Computers
types:
- Professional Computer
origins:
- U.S.A.
years:
- '1983'
cpus:
- MOS 6509
params:
name: CBM 700 Series
company: /companies/commodore
company_name: Commodore
specs:
- label: NAME
value: CBM 700 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: Extended version of Microsoft BASIC 4.0
- label: KEYBOARD
value: Full stroke 94 key with numeric keypad and function/programmable keys
- label: CPU
value: MOS 6509 (Zilog Z80 & Intel 8088 optional)
- label: SPEED
value: 2 MHz
- label: RAM
value: 128 KB (up to 896 KB)
- label: ROM
value: 28 KB
- label: TEXT MODES
value: 80 chars. x 25 lines
- label: GRAPHIC MODES
value: None
- label: COLORS
value: Monochrome
- label: SOUND
value: 3 voices, 9 octaves (same SID 6581 as C-64)
- label: SIZE / WEIGHT
value: 46 (W) x 59.5 (D) x 46 (H) cm
- label: I/O PORTS
value: IEEE-488, Serial RS-232, Cartridge, audio, cassette
- label: BUILT IN MEDIA
value: optional built-in dual floppy disc drives
- label: OS
value: ROM Based (CP/M or MS DOS optional)
- label: POWER SUPPLY
value: Built-in switching 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: $2995
tabs:
- photos
- adverts
- hardware
- software
- emulators
- links
- docs
photos:
- title: MODEL 701
subtitle: ''
text: ''
image: null
- title: DUAL FDD VERSION
subtitle: ''
text: ''
image: null
- title: TOP VIEW
subtitle: ''
text: ''
image: null
- title: RIGHT SIDE
subtitle: ''
text: ''
image: null
- title: KEYBOARD CLOSE-UP
subtitle: ''
text: ''
image: null
- title: WITH 8250LP
subtitle: ''
text: The 8250LP is a dual 5.25" 1 MB floppy disk drive. LP seems to be for Low Profile (Half the height of a normal 8250)
image: null
- title: REAR SIDE
subtitle: ''
text: The monitor only allows brightness adjustment.
image: null
- title: REAR CONNECTORS
subtitle: ''
text: |-
**(1)** Reset button\
**(2)** ROM cartridge connector\
**(3)** Sound output jack\
**(4)** Tape recorder connector\
**(5)** IEEE-488 connector\
**(6)** Power plug and switch\
**(7)** Serial RS-232 DB25 connector
image: null
- title: MAIN BOARD
subtitle: ''
text: |-
**(1)** Characters generator ROM chips\
**(2)** MOS 6525 (Tri-Port Controller)and 6526 (User-Port Controller)\
**(3)** Real-time clock magnetic shield\
**(4)** 3 BASIC EPROM's\
**(5)** RAM expansion controller and ROM\
**(6)** 128 KB RAM memory chips (here 16xFairchild 8264)\
**(7)** Second 128 KB bank, used in 702-703 versions\
**(8)** Keyboard connector\
**(9)** 6509 processor. Quite the same as a 6502 but can manage more than 64 KB of RAM\
**(10)** 6850 video processor\
**(11)** 6551 RS-232-C (V.24) controller
image: null
- title: BASIC ROM'S CLOSE-UP
subtitle: ''
text: |-
Notice that 2764 28-pin EPROMS are socketted onto 24-pin sockets through an adaptor.\
Also notice that the second EPROM plastic protection is broken, but the chip is still running ;-)
image: null
adverts:
- title: 'UK BROCHURE #1'
subtitle: ''
text: ''
image: null
- title: 'UK BROCHURE #2'
subtitle: ''
text: ''
image: null
- title: 'UK BROCHURE #3'
subtitle: ''
text: ''
image: null
- title: 'UK BROCHURE #4'
subtitle: ''
text: ''
image: null
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
screenshots:
- title: CALCRESULT
subtitle: ''
text: A Spreadsheet cartridge for the Commodore 700 series
image: null
- title: WORDCRAFT
subtitle: ''
text: A word processor cartridge for the Commodore 700 series
image: null
emulators:
- title: Versatile Commodore 8-bit Emulator (VICE)
url: http://www.6502.org/users/andre/index.html
platform: Windows
text: ''
links:
- 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)
comments:
- author: Remi Jakobsen (Norge)
date: Sunday 18th March 2018
text: |-
Computers in the CBM-II series was never sold with integrated floppy drives. But probably it was planned for before at a early stage.
The CBM/PET 8296D that was using similar "housing" however, was sold with integrated 8250 duel floppy drive .
- author: Gagarin (USA)
date: Monday 27th March 2017
text: Looking to buy one. Contact gagarinnet @ hotmail.com
related:
- /museum/commodore-cbm-500-600-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: 952
source:
url: https://web.archive.org/web/20230604013708/http://www.old-computers.com/museum/computer.asp?c=952
date: '2023-06-04'
---
The Commodore 700 series featured the same hardware basis as the [600](/museum/commodore-cbm-500-600-series/) series but had a built-in tilt-and-swivel monochrome 12" monitor, a detachable keyboard and housing for two 5.25" floppy drives.
It was said that the 5/6/700 cases were designed by Porsche, not the more familiar Porsche auto factory, but the separate Porsche Design firm.
Three version were also available:\
• 710 (CBM 128/80 in USA): 128 KB RAM\
• 720 (CBM 256/80): 256 KB RAM\
• 730 (CBMX 256/80): 256 KB RAM and coprocessor
Both versions could be purchased with a built-in dual floppy disk drive which was compatible with the external 8250 dual drive unit.