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The EMac: Using Apple’s Forgotten Educational Mac In 2026

Beauty truly is in the eye of the beholder. (Credit: MattKC, YouTube)
Beauty truly is in the eye of the beholder. (Credit: MattKC, YouTube)

What’s it like to use a 2002-era Apple eMac all-in-one in 2025? That’s what [MattKC] asked himself after obtaining one of these systems from a seller who ominously mentioned that it had been ‘left outside for years’.

The Apple iMac is a bit of a cult symbol, whether you’re talking about the iconic fruity iMac G3 or the desk lamp-like iMac G4, but few reminisce or actively collect the Apple eMac. Manufactured from 2002 to 2006, it featured the PowerPC 7450 (G4e) CPU with clock speeds ranging from 700 MHz to 1.42 GHz, as well as a 17″ CRT. In terms of design it was basically a bland iMac G3 that was firmly targeting the education markets to try and regain market share after Windows PCs had begun to eat its lunch there.

As for the model that [MattKC] purchased, it was this earliest model, featuring a 700 MHz PowerPC G4 CPU in addition to 640 MB SDRAM. Despite the seller’s description it seems to be in good nick with it firing right up, and even a glance inside after beating the challenge of 2.5 mm hex screws showed it to be in relatively good condition.

Unlike the iMac G3, you can play the Mac port of Halo on it, but the Minecraft port is very much not performant. With generally multimedia and gaming working well, it does show why the eMac was released, as it’s quite capable relative to an iMac G3 which would have struggled with the educational software of the era. We definitely hope that [MattKC] restores it to its full glory instead of ripping out its innards, as the neglected status of the eMac makes it much more likely to go extinct than PowerPC-based iMacs.

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The Mini PC. Without a banana for scale, you might be fooled.

Jam Like It’s The 1980s With A Mini-IBM PC

A lot of retrocomputer enthusiasts have a favourite system, to the point of keeping up 40 year old flame wars over which system was “best”.   In spite of the serious, boring nature of the PC/AT and its descendants, those early IBMs have a certain style that Compaq and the Clones never quite matched. Somehow, we live in a world where there are people nostalgic for Big Blue. That’s why [AnneBarela] built a miniature IBM PC using an Adafruit Fruit Jam board.

If you haven’t seen it before, the Fruit Jam board is an RP2350 dev board created specifically to make minicomputers, with its two USB host sockets, DVI-out and 3.5mm jack. [Anne] loaded a PC emulator by [Daft-Freak] called PACE-32 that can emulate an IBM compatible PC with an 80386 and up-to 8 MB of RAM on this particular board. The video is VGA, 640×480 — as god intended– piped to a 5″ LCD [Anne] picked up from AliExpress.

That display is mounted inside a replica monitor designed by [giobbino], and is sitting on top of a replica case. Both are available on Thingiverse, though some modification was required to provide proper mounting for the Fruit Jam board. [giobbino] designed it to house a FabGL ESP32 module– which has us wondering, if an RP2350 can be a 386, what level of PC might the ESP32-P4 be capable of? We’ve seen it pretend to be a Quadra, so a 486 should be possible. It wasn’t that long ago that mini builds of this nature required a Raspberry Pi, after all.

Speculation aside, this diminutive IBM build leaves us but with but one question: if you played Links386 on it, would it count as miniature golf?

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A PSOne In The Palm Of Your Hand

Sony’s original Playstation wasn’t huge, and they did shrink it for re-release later as the PSOne, but even that wasn’t small enough for [Secret Hobbyist]. You may have seen the teaser video a while back where his palm-size Playstation went viral, but now he’s begun a series of videos on how he redesigned the vintage console.

Luckily for [Secret Hobbyist], the late-revision PSOne he started with is only a two-layer PCB, which made reverse engineering the traces a lot easier. Between probing everything under the microscope and cleaning the board off to follow all the traces in copper, [Hobbyist] was able to reproduce the circuit in KiCAD. (Reverse engineering starts at about 1:18 in the vid.)

With a schematic in hand, drafting a smaller PCB than Sony built is made easier by the availability of multi-layer PCBs. In this case [Hobbyist] was able to get away with a four-layer board. He was also able to ditch one of the ICs from the donor mainboard, which he called a “sub-CPU” as its functionality was recreated on the “PSIO” board that’s replacing the original optical drive. The PSIO is a commercial product that has been around for years now, allowing Playstations to run from SD cards– but it’s not meant for the PSOne so just getting it working here is something of a hack. He’s also added on a new DAC for VGA output, but otherwise the silicon is all original SONY.

This is the first of a series about this build, so if you’re into retro consoles you might want to keep an eye on [Secret Hobbyist] on YouTube to learn all the details as they are released.

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Clone Wars: IBM Edition

If you search the Internet for “Clone Wars,” you’ll get a lot of Star Wars-related pages. But the original Clone Wars took place a long time ago in a galaxy much nearer to ours, and it has a lot to do with the computer you are probably using right now to read this. (Well, unless it is a Mac, something ARM-based, or an old retro-rig. I did say probably!)

IBM is a name that, for many years, was synonymous with computers, especially big mainframe computers. However, it didn’t start out that way. IBM originally made mechanical calculators and tabulating machines. That changed in 1952 with the IBM 701, IBM’s first computer that you’d recognize as a computer.

If you weren’t there, it is hard to understand how IBM dominated the computer market in the 1960s and 1970s. Sure, there were others like Univac, Honeywell, and Burroughs. But especially in the United States, IBM was the biggest fish in the pond. At one point, the computer market’s estimated worth was a bit more than $11 billion, and IBM’s five biggest competitors accounted for about $2 billion, with almost all of the rest going to IBM.

So it was somewhat surprising that IBM didn’t roll out the personal computer first, or at least very early. Even companies that made “small” computers for the day, like Digital Equipment Corporation or Data General, weren’t really expecting the truly personal computer. That push came from companies no one had heard of at the time, like MITS, SWTP, IMSAI, and Commodore. Continue reading “Clone Wars: IBM Edition”

The Atari 800

Atari Brings The Computer Age Home

[The 8-Bit Guy] tells us how 8-bit Atari computers work.

Personal Computer Market Share in 1984The first Atari came out in 1977, it was originally called the Atari Video Computer System. It was followed two years later, in 1979, by the Atari 400 and Atari 800. The Atari 800 had a music synthesizer, bit-mapped graphics, and sprites which compared favorably to the capabilities of the other systems of the day, known as the Trinity of 1977, being the Apple II, Commodore PET, and TRS-80. [The 8-Bit Guy] says the only real competition in terms of features came from the TI-99/4 which was released around the same time.

The main way to load software into the early Atari 400 and 800 computers was to plug in cartridges. The Atari 400 supported one cartridge and the Atari 800 supported two. The built-in keyboards were pretty terrible by today’s standards, but as [The 8-Bit Guy] points out there wasn’t really any expectations around keyboards back in the late 1970s because everything was new and not many precedents had been set.

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Playing Factorio On A Floppy Disk Cluster

While a revolutionary storage system for their time, floppy disks are not terribly useful these days. Though high failure rates and slow speeds are an issue, for this project, the key issue is capacity. That’s because [DocJade’s] goal is playing the video game Factorio off floppy disks. 

Storing several gigabytes of data on floppy disks is a rather daunting challenge. But instead of using a RAID array, only a single reader and a custom file system is deployed in this setup. A single disk is dedicated to storing pool information allowing for caching of file locations, reducing disk swaps. The file system can also store single files across multiple disks for storage of larger files. Everything mounts in fuse and is loosely POSIX compliment, but lacks some features like permissions and links.

With the data stored across thousands of disks, the user is prompted to insert a new disk when needed. This ends up being the limiting factor in read and write speeds, rather than the famously slow speeds of floppies. In fact, it takes about a week to load all of Factorio in this manner, even after optimizations to reduce disk swaps. Factorio is also one of the few games that could be installed in this manner, as it loads most of the game into memory at launch. Many other games that dynamically load textures and world maps would simply crash when a chunk is not immediately available.

Not a Factorio fan? No worries, you could always install modern Linux on a floppy!

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ARCTURUS control panel

The ARCTURUS Computer Developed At Sydney University In The 1960s

[State of Electronics] have released their latest video about ARCTURUS, the 14th video in their series The Computer History of Australia.

ARCTURUS was a research computer system developed on a shoestring budget at Sydney University in the 1960s, and was in service until 1975. Particularly the system was developed by [David Wong] as a part of his PhD thesis: The design and construction of the digital computers snocom, nimbus and arcturus (PDF). [David] worked in collaboration with [Kevin R. Rosolen] who is interviewed in the video.

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