Retro Computing Archives

Mimic Systems Spartan: Apple II emulator for the C-64

Dave Farquhar Retro Computing March 3, 2013June 24, 20241980s, apple, apple ii, atari, atari 2600, colecovision, collectibles, commodore, sears, spartan

The Mimic Systems Spartan was an elusive bit of C-64 hardware that made it Apple II+ compatible. It’s one of the more interesting Apple II clones of the 1980s. People thought of it as an Apple II+ emulator for the Commodore 64, though it wasn’t emulation in a modern sense.

Mimic Systems took out full-page ads in all of the Commodore magazines, starting in late 1984, promoting the product heavily.

The problem with it was that you couldn’t buy one, at least not in 1984 or 85. The Spartan finally appeared in 1986, and at that point, not many people wanted one anymore. So Spartans are exceedingly rare today.

But it actually seemed like a decent idea. In 1984, that is.

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 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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How abandonware gets abandoned

Dave Farquhar Copyright, Retro Computing, Software November 1, 2012January 19, 20261980s, 1990s, Ars Technica, commodore, commodore 64, public domain, Star Wars

From time to time on classic computing and/or videogaming forums, the question of how to track down the current copyright holder to a particular given title comes up. Sometimes someone knows the answer. Frequently they don’t.

This week, when George Lucas announced he’d sold Lucasfilm to Disney, illustrated precisely how this kind of thing happens.

Dave Farquhar

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The Byte digital archive

Dave Farquhar Retro Computing September 23, 2012January 10, 2025

Here’s a treasure trove for retro computing enthusiasts. Archive.org created the Byte digital archive. It’s exactly what it sounds like: A collection of digitized issues of Byte magazine available online, free.

Numerous archives of vintage computer magazines exist, many of which are of questionable legality so I’ll refrain from saying anything specific about that.

Dave Farquhar

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A TRS-80 retrospective

Dave Farquhar Retro Computing August 25, 2012July 15, 2017commodore, Jeep, radio shack

This month is the 35th anniversary of the TRS-80, which was the best-selling computer in the world until 1982 when the VIC-20 overtook it. Did you miss it? I almost did.

Veteran technology journalist and editor Harry McCracken has a nice retrospective of this mass-market computer from Radio Shack.

Dave Farquhar

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Busted at the Safeway for phone phreaking

Dave Farquhar Retro Computing, security August 11, 2012January 9, 20251980s, 1990s, bbs, certifications, commodore, juvenile detention, phone phreaking, phone service, shrewsbury, watson, watson road

Software developer, author, and blogger Jeff Atwood wrote his confessions of the 1980s this week. As a teenager and not-quite-adult, he was a phone phreaker.

More of this went on than anyone wants to admit. Rob O’Hara has podcasted about it. Read more

Dave Farquhar

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Gary Kildall and what might have been

Dave Farquhar Retro Computing August 8, 2012February 21, 20221980s, Bill Gates, columbia missourian, Digital Research, Gary Kildall, IBM, public domain, SCO, tinkerer, unix

I didn’t have time to write everything I wanted to write yesterday, so I’m going to revisit Bill Gates and Gary Kildall today. Bill Gates’ side of the DOS story is relatively well documented in his biographies: Gates referred IBM to Gary Kildall, who for whatever reason was less comfortable working with IBM than Gates was. And there was an airplane involved, though what Kildall was doing in the airplane and why varies. By some accounts he was meeting another client, and by other accounts it was a joyride. IBM in turn came back to Gates, who had a friend of a friend who was cloning CP/M for the 8086, so Microsoft bought the clone for $50,000, cleaned it up a little, and delivered it to IBM while turning a huge profit. Bill Gates became Bill Gates, and Kildall and his company, Digital Research, slowly faded away.

The victors usually get to write the history. I’ve tried several times over the years to find Kildall’s side of the story. I first went looking sometime in 1996 or so, for a feature story about Internet misinformation I wrote for the Columbia Missourian‘s Sunday magazine. For some reason, every five years or so I end up chasing the story down again.
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Dave Farquhar

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The CP/M-DOS forensics don’t prove much

Dave Farquhar Retro Computing August 7, 2012May 3, 2026atari, Bill Gates, Digital Research, Gary Kildall, Jerry Pournelle, john c dvorak, pc magazine, QDOS

I saw the headline on Slashdot: Forensic evidence trying to prove whether MS-DOS contained code lifted from CP/M. That got my attention, as the connection between MS-DOS and its predecessor, CP/M, is one of the great unsolved mysteries of computing.

Unfortunately, the forensic evidence doesn’t prove a lot.

Dave Farquhar

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Happy 30th birthday, C-64

Dave Farquhar Retro Computing August 2, 20121980s, 1990s, commodore, commodore 64, New Year, pc world, RF

To celebrate the 30th anniversary of the Commodore 64’s release, PC World–a magazine published by the same company that once published RUN, a magazine dedicated to the C-64 and other Commodore 8-bit computers–had someone try to use a 64 for a week.

Not surprisingly, they found the 30-year-old computer not up to 2012’s demands.
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Dave Farquhar

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Amiga on x86

Dave Farquhar Retro Computing, Software June 28, 2012June 25, 2012amiga, amiga os, x86

Re-implementing Amiga OS on cheap, commodity x86 hardware always made sense, so I’m not surprised that someone is doing it. Mostly I’m surprised that it took me this long to find it.

Am I interested? You bet. I’m sure I can find some PC hardware to run it on. I certainly don’t see myself using it as an everyday machine, but as something to tinker on, and something to have running next to my everyday machine, I can see it being fun and possibly even useful.

Dave Farquhar

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