Retro Computing

Retro computing is much easier when you don’t have to deal with actual physical disks. Commodore retro computing is that much more so, because you can’t write a 1541 disk image with a standard PC. There are three major ways to use flash-based media on Commodore computers today. People most frequently ask about the two cheapest methods, Pi1541 and SD2IEC. So let’s compare and contrast the Pi1541 vs SD2IEC.

Both the Pi1541 and SD2IEC allow a Commodore computer to use SD cards instead of disks. The major difference is the Pi1541 closely emulates the real 1541 drive, so it works with a larger number of titles than an SD2IEC does.

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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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Epyx’s Fast Load cartridge did more than just speed up disk access. It also added a fair bit of functionality in the form of utilities and additional commands. Here’s a look at the Epyx Fast Load commands and how to use them.

Most Fast Load commands followed the convention of Commodore’s DOS Wedge, but it only implemented a subset of it. The cartridge also contained some simple disk utilities, including copiers, a disk editor, and simple file utilities. Also keep in mind if you use a Fast Load cartridge with a Pi1541, you need to reconfigure your Pi1541.

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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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LHA was a compression algorithm popular in the early 1990s, especially on Amiga computers. It was similar in concept to Zip on PCs, but was slightly more efficient. Amiga software was frequently distributed in LHA file format.

Most modern PC file decompressors, such as 7zip and WinRAR, can extract the LHA file format. If you need to extract an LHA file on an Amiga or an emulator, the most popular LHA utility was called LhA, written by Stefan Boberg.

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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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For many vintage computer enthusiasts, printing is a curiosity. But it can be nice to be able to print from a vintage machine. And there are relatively modern printers that work with vintage computers without the hassle of finding ribbons. The key is to find a laser printer that can emulate older Epson FX-series dot matrix printers. This takes some legwork and some research, but it’s doable.

Some people consider using a modern LCD cheating, but I don’t think using a laser printer is. Laser printers existed in the 1980s. They were just expensive. This means you can team up your vintage computer with a compatible laser printer to build what would have been a dream outfit when your retro computer was new.

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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.

dfarq.homeip.net

Hobbyists have been building their own replacement C-64 power supplies for decades. I first talked to someone about it in the mid 1990s, when I was still in college. But no one, to my knowledge, has ever given a step by step build process for a DIY power supply. So I will. Here’s how to build your own Commodore 64 power supply.

All you need to build a DIY C-64 power supply are the two cables you can make or salvage from an original power supply, a 9V transformer, a 5V switching power supply module, a case to put it in, and possibly some bits of wire and wire nuts. The only tools you need are a screwdriver and a multimeter.

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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 great thing about Amigas was they had a flat 32-bit memory architecture from day one. Unlike 16-bit DOS PCs, memory was memory–to an extent. Amigas did have three types of memory. So let’s look at Amiga chip RAM vs fast RAM vs slow RAM.

Amiga chip RAM was visible to the CPU as well as the sound and video chips. Fast RAM and slow RAM were not, but fast RAM, which sat higher in the CPU’s address space, could run programs faster than either slow RAM or chip RAM.

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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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This year I set out to put together a working C-64 setup. And it worked great for about a week. Then when I started trying to load a few disks I hadn’t touched since sometime in 1992, my disk drives started protesting. I went from having two working 1541 disk drives to zero, thanks to alignment issues. Here’s how to align a Commodore 1541 disk drive.

Aligning a Commodore 1541 requires an alignment program, an unprotected commercially produced disk that works (Commodore’s Test/Demo disk is ideal), a screw driver, some thread locker, and a Commodore 64. It helps to have moderate mechanical ability and better than average patience. The 1541 was notorious for disk alignment issues, but it’s possible to fix them.

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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.

dfarq.homeip.net

This spring I bought myself a couple of things: a Raspberry Pi, so I could build a Pi1541, and an Epyx Fast Load cartridge. I didn’t have a Pi1541 as a kid of course, and I didn’t have a fast load cartridge either, but I wanted to speed up my new Pi1541. Imagine my disappointment when my two new toys didn’t work together. Here’s how to make the Pi1541 and fast load cartridges play nice together.

By default, the mode the Pi1541 boots into isn’t compatible with fast load cartridges. You have to enable an option to load the file browser off a disk image called FB.D64, and then the two devices work together the way you probably intended.

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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.

dfarq.homeip.net

Atari made a line of PCs in the 1980s, which seems contradictory because it is. Atari was known for doing its own thing, not for copying the rest of the industry. In the context of the time, it’s possible to understand why Atari did it. But in hindsight, it’s easy to see why the Atari PC1 was a mistake and how it impacted the rest of the line.

Atari made several PCs, including the 8088-based PC1, PC2 and PC3; the 286-based PC4, the 386-based PC5. But their lack of expandability and difficulty competing on price limited their appeal.

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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.

dfarq.homeip.net