--- title: Commodore CBM 80xx categories: - Computers types: - Professional Computer origins: - U.S.A. years: - '1981' cpus: - '6502' params: name: CBM 80xx image: /media/museum/photos/commodore_cbm-8032_1.jpg company: /companies/commodore company_name: Commodore specs: - label: NAME value: CBM 80xx - label: MANUFACTURER value: Commodore - label: TYPE value: Professional Computer - label: ORIGIN value: U.S.A. - label: YEAR value: '1981' - label: BUILT IN LANGUAGE value: Commodore Basic (v4.0) - label: KEYBOARD value: Full-stroke keyboard (''business keyboard'') - label: CPU value: '6502' - label: SPEED value: 1 MHz - label: RAM value: 32, 64 or 96 KB - label: ROM value: 16 KB - label: TEXT MODES value: 80 columns x 25 lines - label: GRAPHIC MODES value: none - label: COLORS value: monochrome - label: SIZE / WEIGHT value: Heavy ! - label: I/O PORTS value: IEEE 488, Cassette - label: BUILT IN MEDIA value: None - label: OS value: ROM Based (ROM v4.0) - label: POWER SUPPLY value: PSU built-in - label: PRICE value: Unknown tabs: - photos - hardware - emulators - links - docs forum_thread: 119 photos: - title: CBM 8032 subtitle: '' text: '' image: /media/museum/photos/commodore_cbm8032_2.jpg - title: 8032 SK subtitle: '' text: The CBM 8032-SK was also sold in a European version called **PET 200**. Character generator ROM and keyboard were modified to fit the system to various European languages. image: /media/museum/photos/commodore_8032sk_1.jpg - title: CBM 8296 subtitle: '' text: |- This version holds 128 KB of RAM Thanks to **Roman von Wartburg** from Germany image: /media/museum/photos/commodore_8296_system_1.jpg - title: THE BOX subtitle: '' text: '' image: /media/museum/photos/commodore_8296_box.jpg - title: HAMSTER CAGE subtitle: '' text: |- This monitor found a new job as a hamster cage in the department's mechanical workshop of the University of Amsterdam! Thanks to the [University of Amsterdam](http://www.science.uva.nl/faculteit/museum/) for this picture. image: /media/museum/photos/commodore_pet_hamsters.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: 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-500-600-series - /museum/commodore-cbm-700-series - /museum/commodore-pet-200 - /museum/commodore-pet-2001 - /museum/commodore-pet-30xx - /museum/commodore-pet-cbm-40xx - /museum/commodore-superpet oc_id: 105 source: url: https://web.archive.org/web/20230225141147/http://www.old-computers.com/museum/computer.asp?c=105 date: '2023-02-25' --- The main improvement over the other PET / CBM computers is the 80-column display. The screen is 12'' large and the ROM version is 4.0. The CBM-80xx was often sold as a "bundle". It was made up of the computer (most often the CBM 8032, though other models were made), the 5.25" double disk drive CBM 8050 (500 KB, 77 tracks) and the bi-directional 132-columns, 160 CPS printer. The 8050 has a 6502 CPU, 4 KB of RAM and 12 KB of ROM (which contains the DOS). It was sold with Ozz, a Database, and a version of the spreadsheet "Visicalc". --- **Dave Ridley** reports to us:\ CBM & PET 4000/8000 series - Brings back the memories! I used to fix these things, and boy did they have some classics. Regular problems were caused by the chip sockets going intermittant together with the molex power connectors burning out! Fix - remove chip squirt with RS Solvent Cleaner and stick them back. The external Disk units were connected by IEEE connectors. These disk drive units would fail, many a time I would open a unit up onsite(rather like opening the bonnet of a car) to find a pair of rectifier diodes that had got so hot they had actually melted themselves out of the board and fallen into the base. **Ben Pony** adds:\ I experimented with the compatibility of this computer and the [C-64](/museum/commodore-c64/). Any software stored on cassette by the CBM could be loaded into the C-64, but C-64 tapes wouldn't work on the CBM. About the 8296 FDD unit, by **Michael Huth**:\ The 8296DS double disk drive unit uses 2x 6502. They work as multi-processor system. One cpu manages the data transfer and the other the drives hardware. So in fact the floppy has the double computing power than the computer itself.