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How one engineer beat the ban on home computers in socialist Yugoslavia
Very few Yugoslavians had access to computers in the early 1980s: they were mostly the preserve of large institutions or companies. Importing home computers like the Commodore 64 was not only expensive, but also legally impossible, thanks to a law that restricted regular citizens from importing individual goods that were worth more than 50 Deutsche Marks (the Commodore 64 cost over 1,000 Deutsche Marks at launch). Even if someone in Yugoslavia could afford the latest home computers, they would have to resort to smuggling.In 1983, engineer Vojislav Voja Antoni was becoming more and more frustrated with the senseless Yugoslavian import laws. We had a public debate with politicians, he says. We tried to convince them that they should allow [more expensive items], because its progress. The efforts of Antoni and others were fruitless, however, and the 50 Deutsche Mark limit remained. But perhaps there was a way around it.Antoni was pondering this while on holiday with his wife in Risan in Montenegro in 1983. I was thinking how would it be possible to make the simplest and cheapest possible computer, says Antoni. As a way to amuse myself in my free time. Thats it. Everyone thinks it is an interesting story, but really I was just bored! He wondered whether it would be possible to make a computer without a graphics chip or a video controller as they were commonly known at the time.Voja Antonic talking via Zoom, February 2022. Photograph: Voja Antoni/Lewis PackwoodTypically, computers and consoles have a CPU which forms the brain of the machine and performs all of the calculations in addition to a video controller/graphics chip that generates the images you see on the screen. In the Atari 2600 console, for example, the CPU is the MOS Technology 6507 chip, while the video controller is the TIA (Television Interface Adaptor) chip.Instead of having a separate graphics chip, Antoni thought he could use part of the CPU to generate a video signal, and then replicate some of the other video functions using software. It would mean sacrificing processing power, but in principle it was possible, and it would make the computer much cheaper.I was impatient to test it, says Antoni. As soon as he returned from his holiday, he put together a prototype and lo and behold, it really worked. Thinking outside the box had paid off.His next thought was that perhaps other people would want to make their own version of the computer although he didnt foresee how far that particular thought would take him. Everything that happened after that was not because of me, he says, but because of smart journalists, who knew how to make good story.A paper blueprint for the Galaksija. Photograph: Boris Stanojevic/Boris Stanojevi, Dejan Ristanovi, Voja AntoniJournalist Dejan Ristanovi regularly wrote articles on computing for the Yugoslavian popular science magazine Galaksija (Galaxy in English), and he met with Antoni in the summer of 1983 to discuss the clever, budget-priced computer he had come up with. Yugoslavia didnt have any homegrown magazines dedicated to computing at the time, but computers certainly came under Galaksijas science remit. Ristanovi was impressed by Antonis design, and his editors decided it should be included in a special, 100-page spin-off magazine called Racunari u vasoj kuci (Computers in Your Home).The 100-page magazine would contain detailed instructions on how readers could build their own version of Antonis computer. He didnt have a name for the machine at this point, but it was quickly decided that it should be named after the publication and it was duly christened the Galaksija.Antoni and Ristanovi, along with the editor Jova Regasek, began working together to refine the machine and provide detailed instructions on how to build it. Readers would be able to order a self-assembly kit from a Croatian company that contained all the components they needed: the chips came from Austria, and the other components (like the printed circuit boards) were sourced from within Yugoslavia. Readers could also send in their EPROMs to be loaded with the Galaksija software, which included Galaksija BASIC and a limited character set (only upper case characters were included, as there was no room to include lower-case letters).The first issue of Racunari u vasoj kuciOne interesting quirk of the Galaksija is that the kit didnt come with a case. Some readers improvised their own cases made from metal or wood, while many other Galaksijas remained naked. The result is that no two Galaksijas look alike.A Galaksija computer housed in a blue case. Photograph: Vlado VinceOne person who really helped to boost the profile of the Galaksija in the early days was Zoran Modli. He hosted a show called Ventilator 202 on Radio Belgrade, and he was approached by the RacunariComputers exploded in popularity in Yugoslavia over the next few years. Ironically, the success of the Galaksija media campaign ended up being to the detriment of the computer itself. It was so successful that it highlighted the pressing need for Yugoslavians to have access to computers, and around a year after the first RacunariThe government raised the 50 Deutsche Mark import limit in 1985, and the new import cap was just enough to buy one Spectrum computer, says Antoni. So did his invention of the Galaksija directly lead to this change in the law? I believe so, he says, but I cannot prove that. Its just my opinion.Now that the Yugoslavian public had access to more powerful machines like the Sinclair ZX Spectrum, the humble Galaksija seemed less appealing. Galaksija was doomed as a project, laments Antoni. The only reaction amongst people was to laugh at it. They just said, Now I have a computer which is 1,000 times more powerful than Galaksija. It didnt help that the Galaksija had only a limited software library, which was mostly produced by enthusiastic amateurs. (If youd like to play some Galaksija games yourself, you can find a handful of browser-based ones at https://galaksija.net.)Soon after [the] Galaksija computer, the war times started in Yugoslavia, says Antoni. And no one was interested in anything but pure survival. The violent break-up of Yugoslavia at the start of the 1990s engulfed the Balkans in a horrific war that raged, on and off, for much of the decade. At around the same time, the economy began to collapse as the country entered a period of hyperinflation, which led to the necessity for printing a 2 million dinara bill in 1989, and eventually a 500 billion dinara bill in 1993 which was worth just a few cents.Antoni wrote anti-war articles, and kept tinkering with the Galaksija and other computer projects. I just did it as my hobby, he says. I was working just for me. I was very poor at that time, and I couldnt earn much from doing that. But I just was doing it as my hobby, and I was pleased with it, I was happy with it. Amid the upheaval of war, the Galaksija had been all but forgotten. It was during this time that Antoni threw away all of the original Galaksija prototypes and documentation, thinking no one would be interested in them.Antoni donated a Galaksija computer to the Computer History Museum in California. Photograph: Damir PerecBut in the late 2000s and 2010s, things began to change. Antoni found that people were rediscovering the Galaksija. The new century started something which I call the renaissance of hardware, he says. People started being interested in old computers. Im not a sociologist, I cannot explain that, but somehow they started to be interested. And whats now happening [with the Galaksija] is amazing for me. I cannot explain that either!Computers like the Galaksija not only provoke nostalgia in people who remember them when they were new, they also teach new generations about computer history, and the many experiments and innovations that led us to where we are today. The Galaksija is particularly special, since it provides a connection to a country and a particular set of social circumstances that no longer exist.The revival of interest in the Galaksija has been particularly moving for Antoni. Its healing, he says. If I was hurt in the 90s, then I was healed after that. Now I receive a lot of emails from people in the US, from Germany, from Australia, from Serbian people who just want to thank me for defining their life, for making them interested in digital computers at the right moment of their lives, so that they could switch to some area which triggered some interest in them. And they became mostly software programmers, but some of them even are dealing with hardware, and they all want to thank me for that.Antoni moved to Pasadena in California around five years ago, and he has been welcomed as a hero by the tech enthusiasts of Silicon Valley. He donated a Galaksija computer to the Computer History Museum in Mountain View, and is a regular contributor to the hardware hacking website Hackaday. Even when I spoke to him at the age of 69, he had no plans to retire. Im still active, Im working, Im employed here in Pasadena, he said. Im not thinking about retiring: I hope that I will not have to think about it for some time. Because I just feel like someone pays me for doing my hobby, the same thing that I was [doing] for free a few decades ago. Now Im well paid for that! Not only well paid, but also well recognised.Such recognition is well deserved. By making such a brilliantly clever machine out of so little, Voja Antoni was able to introduce computers to an entire generation changing countless lives in the process.This is an edited extract from the book Curious Video Game Machines by Lewis Packwood, which explores the stories behind rare and unusual consoles, computers and coin-ops. Published by White Owl, an imprint of Pen and Sword, you can order a copy direct from Pen and Sword in the UK, or from Casemate in the US, as well as from Amazon and all good bookshops.
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