Forum Links Systems Publications Info History Events News Home

The front of the Pet 2001

Manufacturer Commodore Business Machines
Model Personal Electronic Transactor (PET) 2001
Date Announced 1977
Date Canceled Unknown
Number Produced 10,000+
Country of Origin United States
Price Approximately $595
Current Value $100-$500
Processor MOS 6502
Speed 1 MHz
RAM 4K on the first models, 8K on the later ones.
ROM Unknown
Storage Built-in Cassette drive
Expansion Various internal expansion options became available over time including ROM and keyboard upgrades.
Bus N/A
Video 40x24 text on the built-in monitor
I/O Parallel, Serial, IEEE-488
OS Options N/A
Notes The PET was Commodore's (formerly MOS) first fully integrated computer. The design was based on the specifications of the KIM-1 but added the full keyboard, video, built-in storage and more. The original PET keyboard was effectively a "chicklet" style keyboard with small plastic keycaps arranged in neat rows and columns rather then the larger offset keys of a regular keyboard. This was the PETs worst feature and was corrected in later models.
Related Items in Collection Some software on tape, external tape drives, magazines, newsletters, manuals, Commodore Pet 8032
Related Items Wanted Working original tape drive(s), disk drives, additional software, newsletters, etc.

The Commodore PET 2001 was the first full computer that Commodore produced. It was based on the same architecture as the MOS/Commodore KIM-1 but provided a keyboard ("chicklet style"), tape drive and monitor all housed in a space-age case.

The first PET 2001 in my collection was horribly brutalized by an inept shipping company and is currently not operational. I may be able to revive it some day, but it has suffered some case damage that may prevent a complete restoration.

A replacement machine was added to the collection that functions quite well. As expected, the internal tape drive isn't working yet (mainly due to a rotted out drive belt) but the external tape drive allows software to be loaded (sometimes) and it will run.

I've finally gotten a bit of time to take some pictures so I'm adding some here. All of these pictures are of my second PET. The trashed one has not yet been worked on or photographed beyond what was required to try for compensation. Those pictures will likely be posted once the case closes, one way or another, along with a description of the nonsense I've had to go through because of my poor choice of shippers.

The picture at the top is a view of the PET itself. Notice the slight modification made to the machine. The red button on the front controls a small electric fan mounted above the motherboard. These original PETs ran warm and some of the components didn't like that much. I suspect that this was a fairly common modification.

The Pet 2001 running perfectly

This is a Personal Electronic Transactor model 2001-8. It has 8K of RAM and runs great.

The Pet 2001 with the hood up

The majority of the PET line had a tilt-up body with the monitor and keyboard mounted in the top half and the computer in the bottom. Notice the fan at the back. It was added in the aforementioned modification.

Documentation for the Pet 2001

It's always nice to have documentation for your classic systems. This machine came with tons. The previous owner was obviously a pack-rat (I love that type of computer owner) and kept pretty much everything, including the upper half of the warrantee document.

A pile of other documents, newsletters and magazines is shown in the pictures below.

Early newsletters dedicated to the Commodore Pet 2001

Early newsletters dedicated to the Commodore Pet 2001

Early newsletters dedicated to the Commodore Pet 2001

Early newsletters dedicated to the Commodore Pet 2001

Early newsletters dedicated to the Commodore Pet 2001

Software tapes for the Commodore Pet 2001

The PET also came with a good collection of software on tape. Some of the tapes have suffered bit-rot, but many are fully or partially readable and much of the software was duplicated. I don't think much has been lost.

Before I added the PET above to my collection I had purchased another one that was, unfortunately, damaged in transit.

Since there was an outstanding claim on the machine I didn't really work with it much and just as the claim was settled I was forced to put the machine into long-term storage.

When I finally got it back I was faced with trying to pry open the case since the shipping damage had effectively locked it closed. Once I figured that out I was able to assess the interior damage to the machine. As it turned out the machine was pretty tough. Blows that were capable of bending the sheet metal of the case did little but unseat some chips, connectors and cards inside of the unit.

The busted Commodore PET isn't so busted

Realizing that the machine was salvageable I carefully put everything back where it came from and powered on the unit. I was more than surprised to see it run just fine in spite of the cosmetic damage!

The inside of the busted PET

The inside of the machine actually looks pretty good. It also shows some modification. Mainly the addition of a motherboard sporting additional RAM and card slots. This is plugged into the expansion interface on the side of the Pet.

Busted PET with keyboard - working like a champ

The on board chicklet keyboard is pretty temperamental but the unit came with a nice matched external keyboard sporting a more traditional layout.

This PET also came with a Compu-Think external dual-5.25" disk drive unit.

(Submitted April 21, 2012 09:44:23 by Matt)

Hi! I'm really interested in buying a working Commodore PET 2001 Blue Edition. Send me an email if you have one setting a negotiable price.

(Submitted March 20, 2012 09:43:26 by Mark Daily)

I am in need of the Rom's for a blue faced 2001 with chicklet keyboard.

(Submitted December 14, 2011 16:36:50 by Santana)

Hello, I would like to purchase a functional Commodore Pet 2001 Blue Edition for a friend who desperately wants one. I will pay up to $350 for it. Email me if you are willing to negotiate.

(Submitted December 1, 2011 18:29:50 by dave)

I have 2 pet 2001 1 is blue face with chiclet style keyboard and a tape drive, the other is a black face with normal style keyboard. also have an external memory unit. Dont remember if it works for both or just one of the units, Several tapes some games aome applications. I assume the black is more a business type looking for a home

(Submitted October 27, 2011 23:30:59 by Joe)

I fondly remember using these computers when I went to Holly Hill Junior High School in 1978, 79. The school had purchased several of these and placed them in the library and we would actually go as a class to the library and sit with the teacher who would show us how to use these computers in groups. This was a major milestone since computers in schools were a huge deal back then. I have no idea what we learned but I distinctly remember the chicklet style keyboards you explain in your description above. I was one of the few that actually loved that style keyboard and wish it was still available today. I do remember how fun it was to use the computers though, whatever we did on them. I was a huge video game fanatic too and they were just introducing Space Invaders and a few of the other first style video games.

(Submitted September 11, 2011 19:08:05 by Ashley)

I have a Commodore PET 2001-8 blue version for sale, actually just listed on the marketplace. I have prices set, but am also very open to negotiation.

Link: auction_id=111095

(Submitted September 2, 2011 14:09:00 by Bob Jansen)

I have a fully functional Pet 2001. Belgium / Antwerp region.

(Submitted July 1, 2011 20:15:45 by roger)

I have a fully functional PET for sale email me

(Submitted June 12, 2011 17:33:12 by Damiano)

Looking to buy at PET 2001!

(Submitted May 10, 2011 16:53:43 by RC Ambrose)

I am looking for a working Commodore Pet 2001 (with the chicklet keyboard). It is for display on an Internet Podcast Network's New Studio Set. I want to display some great pieces of technology history and think this is the Cat's Meow... email:

I am interested in anything else that would excite the TechGuy types out there...


(Submitted March 28, 2011 23:38:45 by Jim)

I am also looking for a working Commodore Pet 2001 (with the chicklet keyboard). I live in Washington state.

(Submitted January 27, 2011 11:46:53 by Andre)

I am also looking for a working PET 2001. Please contact me if you have one for sale. I am located in Ontario Canada. Thanks.

(Submitted December 6, 2010 11:41:08 by Yanick)

I'm looking for a working PET 2001. I'm in Canada.

(Submitted November 22, 2010 12:20:21 by Leanne)


I have a PET 2001 series. I know the monitor works but I think the base needs a bit of work. I think it just has a few loose wires. All the chips etc are there and has a working cassette drive. If anyone is interested in buying then please email me with an offer

(Submitted November 17, 2010 10:21:40 by Geraint Jones)

I have a Commodore Pet 2001 Series which is fully working, it does not look like the above picture as there is no tape drive? Would it be worth anything to any collectors?

(Submitted September 17, 2010 10:21:31 by Mark Daily)

HELP !! I got a 2001 and it came with 2 extra boards.. I dont know what they are.. one of them looks to have the original roms from the main board in it.. but only 5 and every picture I see has 7 Roms. ALSO... I dont know which ones.. go into which sockets. ANY GURU wanna help me out. also I have 4 other PETS all in some state of non working.. so im looking for assistance. one is a SUPERPET I really wanna get running.

(Submitted August 10, 2010 18:45:10 by brian)

i have a pet 2001 in the original box from commodore with original tape drive and manual. it fires up instantly and is in extremely good condition. what is this worth

(Submitted June 9, 2010 11:31:22 by Pierre)

Hi, are you interesting of selling the Pet-2001(blue one) and if at what price?

Pierre Normandeau

(Submitted March 16, 2010 17:24:53 by John)

I am based in Melbourne, Australia and i am looking to Buy a Pet computer 2001, Working or non working i am a computer tech so that isn't a problem, You can reply back at and i am prepared to pay the right money for the right system. Thanks

(Submitted March 2, 2010 06:24:21 by marta)

desde españa vendo pet 2001 series contacto

(Submitted February 22, 2010 18:50:55 by Ronobo)

Just got a PET 2001 (black label for those of you who care) that's been rotting in a barn attic for the past 20 years..... dirty as hell, missing the tape drive and smelled like sweaty horse when it first warmed up...

BUT, it started up after my second try and boots into BASIC (just had to reseat some of the chips. After a quick dusting of the main board, it doesn't smell anymore either.

Might clean up nice, but I may part it out and sell it on Ebay if I can't find a good donor machine for parts or just a tape drive to put in it.

If you're interested, make me an offer. I can send some pics.

(Submitted February 22, 2010 00:05:14 by Simon)

looking to buy a PET 2001 in good condition. simons007 at hotmail

(Submitted January 14, 2010 13:17:50 by Bernie)

Does anyone know who Mortar is , that posted in April of 09?

I have 3 vintage Commodores I am going to sell of them being an original PET 2001.



(Submitted November 10, 2009 16:04:57 by jay)

I have PET 2001-16 with external 2031 floppy drive (single) and some software disks I am trying to sell, located in victoria bc canada and everything in fine working condition- even includes networking cable! Newer MS Basic version, upgraded to 32kb RAM

Please email if interested! Also have a TI 99/4a in working shape in original box!

Both are great fun and still good learning tools!

(Submitted November 8, 2009 15:09:38 by nama)

I'm looking for a non working PET 2001 motherboard. Please email me if you would like to sell. Much thanks.

(Submitted May 7, 2009 19:56:10 by Rene)

I have a commodore 2001 pet personal computer and would like to sell it, good condition. How much are they worth??

(Submitted April 22, 2009 14:14:53 by (a href=mailto:)Mortar(/a))

To this day I have a great fondness for this machine, even though I've never owned one. It was just so different from all the other micros I've messed with, and at the time, the easiest to use. I loved the all-in-one design and the chicklet keyboard didn't bother me at all, even though I was a touch-typist.

If I ever find one in as good condition as yours, I'm snatching it up. The PET 2001 is my holy grail of computers.

(Submitted February 27, 2009 22:25:29 by Bret)

Hello, If you have a 2001 series PET for sale with the chicklet keyboard I'd be interested in purchasing it. I set up a special e-mail just for this (linked from my name). I'd like one in working condition with blue label if possible. I realize this will cost a few hundred dollars. If you have a PET 2001 that needs a good home, please e-mail me the details. Thank you!

(Submitted December 14, 2008 15:23:00 by Zane)

Are any of these available for sale at a low price ($0-50)? I would like to buy one.

(Submitted April 15, 2008 23:46:37 by Jason)

Hi, I'm looking for a working PET 2001 with chiclet keyboard. Will be generous with offer if working. Thanks!

(Submitted April 14, 2008 15:07:18 by Stephen Wood)

Looking for PET 2001 or chicklet keyboard or spare chicklet keys or new chicklet stickers. Thank you.

(Submitted March 27, 2008 21:01:18 by Robert J. Teitler)

I won the bidding on ebay for a 5.25 dual external floppy drive. It is either a Commodore or Computhink old model. I connected it to my parallel port. My desktop dell computer cannot read the floppy drives. Can anyone help me?

(Submitted March 6, 2008 17:30:35 by Mario)

Hi, I'm looking for a PET 2001, boxed and working. If you have it, and want to sell it, contact me. Thanks

(Submitted February 2, 2008 11:55:59 by Daniel Weiner)

Have a Pet2001 that's been hacked a bit (tape & chicklet keyboard removed and replaced with full size keyboard); 3.0 switchable with 4.0 operating systems, DiskPro ROM; external single floppy disk drive, some manuals and disks. Would like to donate to a good home, especially anyone willing to cover shipping cost.

(Submitted January 27, 2008 16:50:29 by Bill)

I have a Commodore Pet 2001 I would like to sell. It does not boot properly but other wise in pretty good condition.

(Submitted January 10, 2008 18:52:06 by Kevin)

I have a working 8k Commodore Pet 2001 in original box with manuals, game software, and additional external cassette drive. If you're interested in purchasing contact me.

(Submitted December 19, 2007 16:20:37 by (a

I worked on PETs in the 1980s and you should try to get ahold of the book Peek and Poke your Pet for your collection! I don't recall the authors but they were young, possibly teenagers.

(Submitted August 28, 2007 05:31:20 by F.Baube)

Ah, memories. The first program I ever wrote was for one of these critters. I had to take transformer parameters and generate a graph of the hysteresis curve. So it was a lot of POKEs of oddball graphics characters into the graphics memory to get a best-fit to the desired curve. After that, FORTRAN and PL/C were a piece of cake!

(Submitted August 5, 2007 11:33:40 by greg cifizzari)

I have a Commodore Pet 2001-8 I am putting eBay today. It appears to work fine (i am not a computer guy. It has a lot of work books and manuals also cassette drive (no fan under cover)

(Submitted August 4, 2007 03:57:40 by jack)

I am interested in Buying a Pet Computer, Mainly the one with the Built in Cassette Player if anyone has one for sale i am willing to purchase i am based In Melbourne Australia, If you can quote me Freight and how much for the unit. Thanks Jack

(Submitted July 16, 2007 09:13:37 by Chris Wells)

I just purchased a great running Commodore PET 2001 Series identical to the one pictured at the top of page. Got it at a Estate sale. Anyone interested in purchasing let me know.

(Submitted June 1, 2007 02:33:45 by (a href=mailto:)C(/a))

Is that a prop rod built into the case to hold it open?! That's so awesome!

(Submitted March 15, 2007 15:16:09 by Tim)

I am also looking for a Pet 2001, if anyone knows of a seller, I'm willing to pay good $ for a fully functional unit.

(Submitted March 12, 2007 18:24:31 by Fergal)

I bought a PET 2001 series - full keyboard, external cassette, 16k, BASIC 4.0. I also have a CBM 4040 disk drive. However, when I try disk commands the PET usually responds with PRESS PLAY ON TAPE #1 (and occasionally DEVICE NOT PRESENT ERROR.

Are these devices compatible? Can you give me any troubleshooting advice?

(Submitted August 28, 2006 05:46:01 by Booble)

Hi, I have a CBM 3016 (PET) with external tape drive. I rescued it from works decommisioned stash years ago. just got round to setting it up, it works first time. Where can i obtain/ buy some software? And how much is this machine with the tape drive fully working worth? cheers Booble

(Submitted August 18, 2006 10:18:01 by Dick Thompson)

Nostalgia! I ordered my PET in 1977 for $895 USD, sight unseen. Received it from Commodore a full nine months later. Interesting problem using BASIC and 6502 assembly language - and a homebrew cable - to connect the machine to an old military surplus Kleinschmidt teletypewriter (via the 6522 interface IC) to serve as a printer. CBM was WAY too proud of their printers at the time.

Thanks for your Web site! It's a nice stroll down memory lane!

(Submitted August 17, 2006 05:33:42 by Galgogergo)


As I see you've got a Pet 2001 in very good condition... I have some questions:

1: when did you buy it, and 2: how much was the cost you bought it? (just because I saw a PET 8032 on eBay for $300, and it hasn't got softwares, cassette recorder, disk drive unit, etc., and an external keyboard!)

thx for the answers:


(Submitted April 3, 2006 06:47:24 by Labak Surat )

Hello........., Good day i will like to know if u have computer for sale. i want to buy. so i will like to read back from u soon, Thankx


(Submitted December 16, 2005 08:49:13 by Patrick)

I have a Commodore Pet 2001 with bad RAM chips and missing the tape recorder, can anyone tell me where to buy the chips and recorder? Many thanks.

(Submitted November 4, 2005 09:32:15 by CSaunders)

HI! Me again! I was wondering......... If you get a hold on another Comodore PET, Please E-Mail me, because I realy like them! (Hope My Mum dosen't go through the roof!) From CSaunders.

(Submitted October 23, 2005 17:18:06 by Neil Phillips)

Looking to buy a PET 2001. Any information, links, etc. would be apprectiated.

(Submitted September 6, 2005 18:49:23 by Josh Harrison)

I've got a PET 2001-8 for sale, odd display problem.. e-mail me for details and photos.

(Submitted August 25, 2005 11:43:58 by neville buchan)

I own a PET 2001 - internal tape drive missing, though external tape drive with cord avaiable. Unforetunately, the intel fuse is bust. Anyone interested or has a fuse info or one for sale please contact me.

(Submitted April 22, 2005 15:35:31 by Musicman50)

You might want to change the current value on these rare machines. Last time I saw one on eBay it went for over $1,200. Worth more now then when it was new, as a collectors valued machine.

(Submitted March 10, 2005 22:38:23 by Todd Decker)

Looking to buy at PET 2001, software, accesories, etc.

(Submitted February 9, 2005 09:22:26 by (a href=mailto:)Jim Luurtsema(/a))

Impressive collection and in excellent condition.


(Submitted February 3, 2005 11:59:47 by George Miles)

Looking for a PET in working order, or not, willing to discuss $

(Submitted December 30, 2004 13:51:08 by Helge)

Hi, I am living in Germany and I own a well running PET 2001. I'm constantly in search for software on tape to swap. If you are interested please contact me and I will send you a list. Tschüß, Helge

(Submitted November 28, 2004 09:00:27 by Kevin Lawton)

I also have a couple of PET 2001's, unfortunately neither of them work properly. One boots up, but the display flickers on/off for a minute or two then goes off completely. The other is electrically perfect (I think) but won't do anything. Would dearly love to get hold of technical and repair manuals and get them both working properly. The cassette drives also work with C=64 etc. Cheers, Kevin.

Add additional information or comments to this page:

Please use these comments to add to or correct the contents of this page. If you are looking for information, software or hardware please consider posting on the Vintage Computer Forums. If you have a vintage, classic, antique or collectable computer, game or related item(s) for sale or trade please consider using the fee free Vintage Computer and Gaming Marketplace

Please be aware that the email address you post will be posted in the clear. Spam bots can and will pick it up and use it. Please protect your email address by obfuscating it (i.e. or use an address with a good spam filter.

Also please consider using the Vintage Computer Forums for information or the Vintage Computer and Gaming Marketplace for the fee free sale or purchase of vintage, classic, antique or collectable computers, games and ephemera as mentioned above.

Your Name:

Your email address:

What would you like to add:

Please enter "BLUE" in the field below as a Check String:

Powered by MakeBook v3.0.1