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Commodore Plus 4 and Commodore 16

Dave Farquhar Retro Computing July 29, 2018July 5, 20251980s, amiga, apple, apple ii, atari, Bil Herd, commodore, commodore 128, Commodore 16, commodore 64, commodore vic 20, Dave Haynie, IBM, jack tramiel, loyalists, motorola

Dan Bowman kindly pointed me to former Commodore engineer Bil Herd’s discussion of the ill-fated Commodore TED machines on Hackaday. Here in the States, few remember the TED specifically, but some people may remember that oddball Commodore Plus 4 that closeout companies sold for $79 in 1985 and 1986. The Commodore Plus 4 was one of those TED machines. So was the Commodore 16.

What went wrong with those machines? Commodore miscalculated what the home computer market was doing. The TED was a solution to too many problems, and ended up not solving any of them all that well. Arguably it’s more popular with vintage computer enthusiasts today than it was in the 1980s. Read more

Dave Farquhar

David Farquhar is a computer security professional, entrepreneur, and author. He has written professionally about computers since 1991, so he was writing about retro computers when they were still new. He has been working in IT professionally since 1994 and has specialized in vulnerability management since 2013. He holds Security+ and CISSP certifications. Today he blogs five times a week, mostly about retro computers and retro gaming covering the time period from 1975 to 2000.

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The Atari 2600 CPU: The MOS 6507

Dave Farquhar Retro Gaming May 29, 2017January 19, 20251980s, 6502, amiga, apple, apple ii, atari, atari 2600, Chuck Peddle, commodore, commodore 64, intel, jack tramiel, macintosh, MOS, motorola, NES, nintendo, nintendo nes, radio shack

The Atari 2600 CPU was a nondescript MOS 6507 chip. Neither Intel nor Motorola had a CPU chip in the early 1970s that could meet Atari’s price point. MOS Technology didn’t have one either, but they asked Atari what they could afford. Then they made one.

The 6507 is so nondescript, some of them don’t even have the number “6507” anywhere on them.

Dave Farquhar

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Meaning of the word commodore

Dave Farquhar Retro Computing January 24, 2017April 9, 20171980s, 1990s, commodore, jack tramiel

Commodore was a high-flying 1980s computer company that imploded in the early 1990s. But the name is a bit curious. What is the meaning of the word commodore?

Dave Farquhar

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The first successful home computer: Commodore VIC-20

Dave Farquhar Retro Computing June 24, 2016December 27, 2025apple, apple ii, CBM, commodore, Commodore 16, jack tramiel

What was the first successful home computer? Some people would argue it was the Apple II, the TRS-80 Model I, or perhaps even the Apple I. But I argue it was Commodore’s VIC-20.

Maybe I’m biased. I was a Commodore fan growing up and my first experience with a computer was probably on a VIC-20. But I think I can make a case.

Dave Farquhar

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Commodore 64 vs VIC-20

Dave Farquhar Retro Computing December 7, 2015October 26, 20221541, 1980s, 6502, amiga, atari, atari st, commodore, commodore 64, jack tramiel, Microsoft Basic, MOS, power brick, public domain

How do you compare the Commodore 64 vs VIC-20?

The Commodore 64 and its predecessor, the VIC-20, look a lot alike, and the VIC-20’s design certainly influenced the 64. The 64 is the best selling computer model of all time, and I argue the VIC-20 was the first really successful home computer. The success of the two machines allowed Commodore to surpass Radio Shack as the sales leader in the computer industry. Yes, both Commodore and Radio Shack outsold Apple.

But even though the two machines are closely related, there are significant differences between them. It’s important to remember that in the 1980s, two years was a comparatively long time because the market was moving so fast. Plus, the VIC-20 was always supposed to be an entry-level machine. In 1982, the 64 was supposed to be fairly high-end. Let’s compare and contrast the two venerable machines.

Dave Farquhar

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How the Amiga could have lived to age 30 and beyond

Dave Farquhar Retro Computing July 25, 2015February 18, 20171980s, 1990s, amiga, amiga os, apple, atari, Bill Gates, commodore, commodore 128, commodore 64, IBM, intel, irving gould, jack tramiel, macintosh, Mehdi Ali, Microsoft Basic, MOS, motorola, nbc, os x

It was 30 years ago this week that Commodore released its landmark, long-time-coming Amiga 1000 computer–the first 1990s computer in a field full of 1970s retreads.

Yes, it was a 1990s computer in 1985. It had color and sound built in, not as expensive, clunky, hard-to-configure add-ons. It could address up to 8 megabytes of memory, though it ran admirably on a mere 512 kilobytes. Most importantly, it had fully pre-emptive multitasking, something that previously only existed in commercial workstations that cost five figures.

It was so revolutionary that even NBC is acknowledging the anniversary.

Being a decade or so ahead of its time was only the beginning of its problems, unfortunately.

Dave Farquhar

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How thousands of Atari cartridges ended up in the desert

Dave Farquhar Retro Gaming April 28, 2014January 19, 20251980s, 1990s, apple, atari, atari 2600, commodore, jack tramiel, New Mexico, nintendo, Tandy, VCR, video game

The famous story of Atari burying millions of dollars of unsold videogame cartridges, including the infamous E.T. cartridge, is no longer just a legend–it’s been confirmed.

How they got there was mostly a misunderstanding of the nascent business. Read more

Dave Farquhar

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Commodore was more than a stock scam

Dave Farquhar Retro Computing March 15, 2013May 1, 20251980s, 1990s, amiga, apple, atari, Chuck Peddle, commodore, debts, dell, hp, IBM, intel, irving gould, jack tramiel, stock scam, Texas Instruments, TI

From time to time, I see the phrase “Commodore stock scam” or something similar come up in discussion or in books. Commodore, in case you don’t know, was a high-flying computer company in the 1980s that was literally making computers as quickly as they could sell them while Apple struggled for its survival, and was in the enviable position of being the main supplier of chips for its competitors. Imagine if Intel sold computers at retail next to HP and Dell, while still selling chips to Dell. That was Commodore in 1984. I don’t have 1984 figures, but in 1985, Commodore had 38% of the computer market all to itself. IBM and its clones, combined, had 49%. Apple had 13%.

But a decade later, Commodore had squandered all of that away and was out of business. That’s why Robert X. Cringely sums up Commodore as Irving Gould‘s stock scam, then goes back to writing about Apple.

The real story is more complicated than that. More interesting, too.

Dave Farquhar

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The Rise of Commodore

Dave Farquhar Retro Computing December 4, 2012November 23, 20161980s, Canada, commodore, commodore 64, jack tramiel, vic 20

I found an account of Commodore’s rise to prominence on a vintage computing forum. It’s interesting reading. Then again, I’m partial to anything about the rise of Commodore.

Dave Farquhar

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