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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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Commodore 64 common questions and answers

Dave Farquhar Retro Computing April 14, 2017August 5, 20171541, 1980s, 1990s, Baby Boomers, commodore, commodore 128, commodore 64, estate sales, garage sales, irving gould, Japan, Korea

I hear a lot of questions about the Commodore 64 over and over again. Many of them don’t warrant a single blog post. So here’s a list of Commodore 64 common questions and their answers.

If you want to know when the Commodore 64 came out, how many Commodore 64s sold, who made the Commodore 64, where the Commodore 64 was made, is the Commodore 64 worth anything, are Commodore 64 games worth anything, or if you can still buy a Commodore 64, read on.

Dave Farquhar

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Origin of CP/M’s PIP command

Dave Farquhar Retro Computing June 8, 2016November 26, 2018command prompt, commodore, commodore 128, DEC, Digital Equipment Corporation, Gary Kildall, PIP, syntax, unix

CP/M was, as you probably know, the first popular microcomputer operating system. It was good but imperfect, and its cryptic command for copying files, PIP, is often cited as an example. Copy makes sense. Even the Unix equivalent, cp, makes sense–it’s copy without the vowels. But what does PIP mean? What’s the origin of CP/M’s PIP command?

Dave Farquhar

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Commodore 64 vs 128

Dave Farquhar Retro Computing May 19, 2016October 26, 20221541, 1571, 1980s, 6502, amiga, apple, apple ii, c64, commodore, commodore 128, commodore 64, tape drive

Commodore introduced the Commodore 128 in 1985 as an upgrade path from the Commodore 64, the most popular model of computer of all time. The 128 addressed the 64’s biggest shortcomings while remaining mostly compatible with its hardware and software. That makes the Commodore 64 vs 128 a natural comparison, even more natural than comparing the 64 with the VIC-20.

The Commodore 128 was an extension of the Commodore 64, with more memory, a faster disk drive, a faster CPU, and 80-column video. It also featured a very high degree of compatibility, which helped both machines sell better.

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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What it was like owning a Commodore in the 1980s

Dave Farquhar Retro Computing October 6, 2014May 30, 20251541, 1571, 1980s, amiga, christmas, commodore, commodore 128, commodore 64, kmart, piracy, public domain, sears, toys r us

Since questions occasionally come up, and I remember well what it was like owning a Commodore in the 1980s in the United States, I’ll share my recollections of it.

It was very different from computing today. It was still interesting, but it was different. Technology moved fast in the 1980s, so if you blinked, you missed stuff.

Dave Farquhar

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The forgotten computer that changed the world

Dave Farquhar Retro Computing July 22, 2014December 6, 2020amiga, apple, apple ii, commodore, commodore 128, IBM, macintosh

A rather hastily written and sloppily edited piece showed up on Slashdot yesterday morning that caught my attention, because it was about the Amiga 2000. The Amiga 2000 is a dear machine to me; in 1991, our family upgraded to one from a Commodore 128. I still have both machines, and there isn’t much that I know today that I didn’t first experience on one of those two machines.

This is an Amiga 2000 that looks fairly pristine. Inside there was lots of room for hard drives, memory, CPU upgrades, and video devices.

Although I think the piece was little more than a used computer store’s effort to unload some hard-to-move inventory, I do agree with the premise. For a machine that had a tremendous impact on the world as we know it today, the A2000 is criminally unknown. Read more

Dave Farquhar

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Was CP/M overrated?

Dave Farquhar Retro Computing September 27, 2011October 1, 20181980s, atari, atari st, Bill Gates, commodore, commodore 128, DEC, Gary Kildall, IBM, PIP, unix, vector, windows nt

Veteran tech journalist Dan Tynan recently published a list of 10 overrated technology products, and CP/M was on his list. But was CP/M overrated? I want to dig into that question a bit.

I think everyone knows the story of how IBM almost used CP/M as the operating system for its PC, but ended up using an upstart product from a small company named Microsoft instead. We’ll probably never know exactly what happened, seeing as the author of CP/M is dead and his business partner is no longer able to recollect those events from the 1980 timeframe, and IBM and Bill Gates have no reason to embarrass themselves by revisiting the story.

But CP/M was the first and most popular operating system for early 8-bit computers, so people who used it remember it fondly, and the way Microsoft steamrolled it made Gary Kildall and his operating system folk heroes to underdog lovers everywhere. Even people who never used it and weren’t even born when Kildall’s company ceased to exist have at least a vague idea of what it was.
Read more

Dave Farquhar

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Commodore 128, top-12 dud? By what measure?

Dave Farquhar Retro Computing August 17, 2011September 15, 20251980s, amiga, apple, apple ii, Apple Macintosh, atari, atari 2600, atari st, commodore, commodore 128, commodore 64, Commodore Amiga, IBM, ibm pcjr, macintosh, motorola, NES, nintendo, nintendo nes, pc magazine, video game

PC Magazine presented a list of 12 computer duds, and while I agree with most of them, my old friend the Commodore 128 makes an appearance. Commodore released several duds over the years, but calling the 128 one of them doesn’t seem fair.
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Dave Farquhar

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Writing Tight 6502 Series Machine Code

Dave Farquhar Retro Computing May 23, 2011November 29, 20156502, commodore, commodore 128, DEC

This article appeared in the final issue of Twin Cities 128/64, published by Parsec, Inc. of Salem, Mass., sometime after April 1994. Parsec never paid for the article, so under the terms of Parsec’s contract, all rights reverted back to me 30 days after Parsec failed to remit payment.

So now I’m re-asserting my rights to the article. You’ll find the editing poor–all my semicolons appear to have been replaced by commas, for instance–and the writing full of cliches. But I would have been 16 or 17 when I wrote it, and I don’t think it’s a bad effort for a 17-year-old. And the article had some pretty clever tricks. I have to admit I’d forgotten 90% of what was in the article, but I recognize my own writing when I see it.

I’d like to thank Mark R. Brown, former managing editor of INFO magazine, for finding the article and bringing it to my attention. And one final word: Although I wrote this with the Commodore 128 in mind, the same tricks apply to any computer or console based on a 6502 or derivative.

Dave Farquhar

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