yann64andClaude Opus 5.5
b274874139
1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
209 lines
9.3 KiB
Markdown
209 lines
9.3 KiB
Markdown
---
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title: Commodore PET / CBM 40xx
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categories:
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- Computers
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types:
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- Home Computer
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origins:
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- U.S.A.
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years:
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- '1980'
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cpus:
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- '6502'
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params:
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name: PET / CBM 40xx
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image: /media/museum/photos/commodore_pet4032_1.jpg
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company: /companies/commodore
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company_name: Commodore
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specs:
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- label: NAME
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value: PET / CBM 40xx
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- label: MANUFACTURER
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value: Commodore
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- label: TYPE
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value: Home Computer
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- label: ORIGIN
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value: U.S.A.
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- label: YEAR
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value: '1980'
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- label: BUILT IN LANGUAGE
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value: Commodore Basic 4.0
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- label: KEYBOARD
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value: QWERTY full-stroke keyboard
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- label: CPU
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value: '6502'
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- label: SPEED
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value: 1 MHz
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- label: RAM
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value: 16 or 32 KB
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- label: ROM
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value: 20 KB
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- label: TEXT MODES
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value: 40 columns x 25 lines, upgradable to 80 columns
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- label: GRAPHIC MODES
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value: None
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- label: COLORS
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value: Monochrome
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- label: SOUND
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value: Programmable piezo buzzer
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- label: SIZE / WEIGHT
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value: 'Pet 4032 : 9'''' x 17'''' x 17'''' / 45 lbs'
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- label: I/O PORTS
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value: IEEE 488, I/O ports (8), Tape (2)
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- label: POWER SUPPLY
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value: Built-in PSU
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- label: PRICE
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value: £775 (UK, 1984)
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tabs:
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- photos
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- hardware
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- emulators
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- links
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- docs
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forum_thread: 117
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photos:
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- title: PET-4016
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subtitle: ''
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text: A CBM/PET-4000 computer with only 16k RAM.
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image: /media/museum/photos/commodore_pet4016_2.jpg
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- title: PET-4016
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subtitle: ''
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text: ''
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image: /media/museum/photos/commodore_pet4016_3.jpg
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- title: PET 4032
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subtitle: ''
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text: |-
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actually a "fat-40"...
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All PET/CBM 2/3/4xxx series had the small screen. The first large screen PETs were the CBM 8xxx series, afterwards Commodore added the larger screens to the 4xxx range and dropped the graphics keyboard as the system was targetted at business use.
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image: /media/museum/photos/commodore_pet4032_3.jpg
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- title: PET 4032 OPENED
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subtitle: ''
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text: ''
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image: /media/museum/photos/commodore_pet4032_opened.jpg
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- title: HYBRID PET-4032
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subtitle: ''
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text: This is a strange version. It is labeled PET-4032 but has a CBM keyboard (no graphics). It is a 4032 model but has a small screen just like a PET-2001... Even more enigmatic, it has a "PET 2001-32" label at the back.
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image: /media/museum/photos/commodore_pet_4032_2.jpg
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- title: 4032 MOTHER BOARD
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subtitle: ''
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text: |-
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**(1)** IEEE488 port. Can adress up to 15 peripherals. Used for printer and disk drives.\
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**(2)** User port. Includes parallel and video interfaces.\
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**(3)** Tape-recorder port. Requires a specific Commodore tape-recorder to be used.\
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**(4)** Second tape-recorder port.\
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**(5)** Expansion connector.\
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**(6)** ROM chip holding Commodore Basic language ver.4 and operating system.\
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**(7)** Piezoelectric loudspeaker.\
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**(8)** Keyboard connector.\
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**(9)** 32 Kb. RAM chips, expandable to 96 Kb.\
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**(10)** Chips in charge of handling the peripherals.\
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**(11)** MOS 6502 microprocessor.\
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**(12)** Interface and synchronization 6522 chip.\
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**(13)** Characters generator chipset for upper case, lower case and graphic characters.
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image: /media/museum/photos/s_commodore4000_motherboard.jpg
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hardware:
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- title: CLOCK/CALENDAR MODULE
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subtitle: ''
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text: Could be connected to any PET/CBM user port. Clock and calendar were battery backed up.
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image: /media/museum/hardware/commodore_pet_clockmodule_1.jpg
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- title: EPROM PROGRAMMER
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subtitle: ''
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text: Could burn 2716 and 2732 Eprom chips.
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image: /media/museum/hardware/commodore_pet_epromprog_1.jpg
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- title: TNW-2000
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subtitle: IEEE-488 to Serial converter
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text: Thanks to **Pascal Rollin**
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image: /media/museum/hardware/commodore_pet_tnw2000_1.jpg
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- title: DUAL DISK-DRIVES
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subtitle: Model 2040
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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.
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image: /media/museum/hardware/commodore_cbm2040-dualdisks_1.jpg
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- title: 8050 DUAL DISK-DRIVE
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subtitle: ''
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text: |-
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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.
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It can be used with Commodore Series 2001, Series 3000, Series 4000 and Series 8000. It uses an IEEE-488 interface.
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image: /media/museum/hardware/commodore_cbm_8050_diskdrives.jpg
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- title: 8250-LP DUAL DRIVE UNIT
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subtitle: ''
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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!
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image: /media/museum/hardware/commodore_700_8250fddunit_1.jpg
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- title: 9090 HARD-DISK
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subtitle: ''
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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.
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image: /media/museum/hardware/commodore_cbm_9090_harddisk.jpg
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- title: 8023P COMMODORE TRACTOR PRINTER
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subtitle: ''
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text: ''
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image: /media/museum/hardware/commodore_printer_8032p.jpg
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emulators:
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- title: Versatile Commodore 8-bit Emulator (VICE)
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url: http://www.6502.org/users/andre/index.html
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platform: Windows
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text: ''
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links:
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- title: Larry's PET/CBM Pages
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url: http://www.portcommodore.com/petindex.php?path=main-cbmidx
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text: Excellent source of information for PET/CBM computers
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- title: PET index
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url: http://www.6502.org/users/andre/petindex/index.html
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text: Some useful info here about PET computers
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- title: The Commodore CBM-II page
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url: http://ca.geocities.com/SJGRAY@ROGERS.COM/CBM/
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text: All things CBM-II
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- title: THE Independent Commodore Library
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url: http://freespace.virgin.net/ken.ross1/
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text: All sorts of programs here, text files covering a wide range of subjects
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- title: TPUG - Toronto PET Users Group Inc.
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url: http://www.tpug.ca/
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text: The Commodore PET Users Group, founded in 1979 ! (seems offline, mail us their new address if you find it)
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- title: www.commodore.ca
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url: http://www.commodore.ca/products/pet/commodore_pet.htm
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text: Excellent site with a lot of info about Commodore computers including dedicated PET pages
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- title: Web Wiz CAPTCHA
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url: http://www.webwizcaptcha.com
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text: Discussion about Commodore micros
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docs:
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- title: COMMODORE BASIC VERSION 4.0 - USER'S REFERENCE MANUAL
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url: http://www.commodore.ca/manuals/default.htm
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cover: /media/museum/docs/couvs/commodore_basic_4_users_reference%20manual.jpg
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text: |-
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[**COMMODORE BASIC VERSION 4.0 - USER'S REFERENCE MANUAL**](http://www.commodore.ca/manuals/default.htm)written by Commodore
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compiled/archived by www.commodore.ca\
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type of document : PDF\
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source : [www.commodore.ca](http://www.commodore.ca)
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- title: COMMODORE PET MACHINE LANGUAGE MONITOR
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url: http://www.commodore.ca/manuals/default.htm
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cover: /media/museum/docs/couvs/pet_machine_language_monitor.jpg
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text: |-
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[**COMMODORE PET MACHINE LANGUAGE MONITOR**](http://www.commodore.ca/manuals/default.htm)written by Commodore
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compiled/archived by www.commodore.ca\
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type of document : PDF\
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source : [www.commodore.ca](http://www.commodore.ca)
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related:
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- /museum/commodore-cbm-500-600-series
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- /museum/commodore-cbm-700-series
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- /museum/commodore-cbm-80xx
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- /museum/commodore-pet-200
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- /museum/commodore-pet-2001
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- /museum/commodore-pet-30xx
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- /museum/commodore-superpet
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oc_id: 103
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source:
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url: https://web.archive.org/web/20230402091743/http://www.old-computers.com/museum/computer.asp?c=103
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date: '2023-04-02'
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---
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These computers are new versions of the PET series. The main improvement was the new ROM version (v4.0) which offered new possibilities such as direct disk operation commands (DLOAD, DSAVE, COPY, HEADER, etc.) or the ability to repeat cursor control characters by holding down keys. Late models also had a larger screen (12'') than the 2001 computers.
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The disk drives were "Intelligent", which means that they were CPU driven (MOS 6502) and had internal RAM (4 KB) & ROM (16KB, which contained the DOS).
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The 4032 and the 4016 were sold with an 80-column dot matrix printer (5x8 character matrix). This printer (4022) was an Epson printer with a Commodore name on it.
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**Dave Ridley** reports:\
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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.
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