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Disadvantages of the 8086 microprocessor

Dave Farquhar Hardware, Retro Computing July 11, 2017August 11, 20176502, amd, apple, Apple Lisa, DEC, IBM, intel, MOS, motorola, x86

An 8086-series microprocessor, the 8088, powered the original IBM PC. Its direct descendants power PCs to this day. Not only that, they power modern Macs too. This was always controversial, especially running Mac OS on Intel chips. Why? What are the disadvantages of the 8086 microprocessor?

Dave Farquhar

David Farquhar is a computer security professional, entrepreneur, and author. He started his career as a part-time computer technician in 1994, worked his way up to system administrator by 1997, and has specialized in vulnerability management since 2013. He invests in real estate on the side and his hobbies include O gauge trains, baseball cards, and retro computers and video games. A University of Missouri graduate, he holds CISSP and Security+ certifications. He lives in St. Louis with his family.

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What happened to Digital Equipment Corporation?

Dave Farquhar Retro Computing June 20, 2017October 3, 20181980s, 1990s, altavista, amiga, apple, commodore, compaq, computer security, d-link, DEC, Digital Equipment Corporation, Digital Research, firewall, hp, IBM, intel, lexmark, linksys, macintosh, netgear, PIP, spam, syntax, unix, windows nt, x86

Digital Equipment Corporation was perhaps the second most important computer company in history, behind IBM. Its minicomputers challenged IBM, and, indeed, Unix first ran on a DEC PDP-7. DEC’s Alpha CPU was one of the few chips to make Intel nervous for its x86 line. It created the first really good Internet search engine. In a just and perfect world, DEC would still be dominating. Instead, it faded away in the 1990s. What happened to Digital Equipment Corporation, or DEC?

There’s a short answer and a long answer.

Dave Farquhar

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IBM PS/2 vs PC

Dave Farquhar Retro Computing June 9, 2017July 26, 20221980s, 1990s, apple, apple ii, asus, compaq, IBM, intel, VGA, x86, XT

The IBM PS/2 line was a fairly radical departure from the older IBM PC line. This was deliberate, as IBM wanted to disrupt the clone industry, which it saw as a threat to its business. Here’s a look back at the IBM PS/2 vs PC, the line it replaced.

IBM succeeded with the PC because it created an ecosystem, not just a PC. IBM’s misstep was creating an open architecture and then trying to close it back up after the fact with the PS/2. In IBM’s defense, it’s not clear whether they knew this at the time. If nothing else, in the case of the IBM PS/2 vs PC, IBM created a classic case study of open architecture vs closed.

Dave Farquhar

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Advantages and disadvantages of Windows NT 3.1

Dave Farquhar Retro Computing May 18, 2017November 29, 20181990s, AIX, amiga, apple, best buy, DEC, hp, IBM, intel, linksys, motorola, Orange Book, proprietary unix, unix, windows nt, Windows XP, wrt54g, x86

I’ve talked a lot about the advantages and disadvantages of old milestone operating systems. But what were the advantages and disadvantages of Windows NT 3.1? That’s a fair question.

Dave Farquhar

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Lenovo and Best Buy team up for a $149 laptop for 2015

Dave Farquhar Hardware November 20, 2015March 30, 2024best buy, hp, intel, Intel Atom, keyboard shortcuts, lenovo, Lenovo Ideapad, Microsoft Office, usb port, Windows 10, windows 7, x86

Cheap laptops are nothing new this time of year–they’ve been practically a holiday tradition since 2002 when Sotec released a decent laptop for $900, which was jaw-droppingly low for the time–but this year, Best Buy is selling a Lenovo Ideapad 100s for $149.99, which, while not jaw-droppingly low given the number of $199 laptops that were available last year, is still the cheapest name-brand laptop I’ve seen. Note: Best Buy has since raised the price to $199, but Ebay has limited stock of the same item for $129.

I’ve seen some reviews, but there is one thing I haven’t seen anyone bring up yet: This is a netbook in every way, except I think we’re supposed to call them cloudbooks now. So keep that in mind. The machine is probably worth $149.99, but it made some compromises to reach that price point.

Dave Farquhar

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Will ARM overtake x86?

Dave Farquhar Hardware August 14, 2015August 2, 2017amd, android, apple, intel, mac os x, os x, x86

Here’s an interesting question I got recently: Will ARM overtake x86?

I think the answer depends on how you define “overtake.”

Dave Farquhar

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What to look for in a 2014 bargain Android tablet

Dave Farquhar Android December 1, 2014November 29, 2014android, intel, Kit Kat, Play Store, x86

I guess I owe an apology for not writing and posting this last week, when $40 tablets were all the rage as doorbusters. Cheap Android tablets are back again, and people are going to buy them–so it pays to buy one worth having, rather than one that’s going to drive you nuts.

Here’s what I look for, and you should too: Read more

Dave Farquhar

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Why we can’t have nice things: The reaction to IBM’s big black and blue quarter

Dave Farquhar Uncategorized October 21, 2014October 20, 2014AIX, amd, datacenter, hp, IBM, lenovo, mainframe, proprietary unix, unix, warren buffett, x86

IBM announced yesterday that it had a terrible quarter. They missed earnings, the stock plunged, and Warren Buffett lost a billion dollars.

Everyone assumes Warren Buffett is worried, or livid, and selling off the stock like it’s on fire. Read more

Dave Farquhar

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More about Pfsense, the alternative to the crappy consumer router

Dave Farquhar security February 24, 2014July 11, 2018android, antivirus, AV, DEC, firewall, freebsd, hp, Image File, linksys, netgear, PCI Express, pfsense, tinkerer, tp link, vulnerability, x86

I spent some time over the weekend playing with Pfsense, and I can’t say much about it other than it does what it says. I didn’t throw a ton of hardware at it–the best motherboard I have laying around is a late P4-era Celeron board, and the best network card I could find was, believe it or not, an ancient Netgear 10/100 card with the late, lamented DEC Tulip chipset on it. Great card for its time, but, yeah, nice 100-megabit throughput, hipster.

If you actually configure your routers rather than just plugging them in, you can do this. Plug in a couple of network cards, plug in a hard drive that you don’t mind getting overwritten, download Pfsense, write the image file to a USB stick, boot off the USB stick, and follow the prompts. Then, to add wireless, plug in a well-supported card like a TP-Link and follow the howto. Read more

Dave Farquhar

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Getting past your own biases

Dave Farquhar Uncategorized February 13, 2014July 14, 20171990s, amiga, Andy Grove, apple, atari, Bill Gates, commodore, IBM, intel, macintosh, motorola, x86

I read Andy Grove’s Only the Paranoid Survive last week. I always figured it was an autobiography or memoir, not a business book. But it’s a business book. A very good one.

I avoided it because I didn’t like Andy Grove. I’ve never been a fan of Intel’s business practices during the 1990s and 2000s, including using payola to keep competitors’ chips out of large computer systems, but after reading this book, I’m more disappointed than anything. Whichever company had Andy Grove wins, period. No need to cheat. Read more

Dave Farquhar

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