This is a hand-drawn circuit diagram my friend made probably in the late 1970s / early 1980s. He was a computer science graduate student at the time and soon after became a comp sci professor. I cannot tell you much more about it, as it is beyond my scope of understanding. He recently passed away and this was found with his belongings. I will provide a little information about him to the purchaser so you have some sense of provenance. It is large, approximately 34” x 22”. Drawn in pencil.
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94681C W03.
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W&T Printer Interface C64 / C128.
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Dieses historische Stück der Elektronikgeschichte ist nicht nur ein außergewöhnliches Sammlerstück, sondern auch ein Zeugnis technologischer Vergangenheit. 1 Stück / 1 piece.
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ACQUISTALO SUBITO! CHE ASPETTI.
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*I recently powered this unit on - the fan kicked on and the power indicator light came on as well - after about 10 second the indicator light went off but the fan kept spinning- at this point I turned the power off and have not attempted to turn it back on.* This came from a lot - don’t really know anything about it. All I could find on Mizar was some gold testing devices. Comes with the m68000 chip and a couple of other gold caps / good amount of other cards / I have no intention of powering this piece on so be aware that you are buying it as is and should expect it to be non functional. Cool collectors piece ! Thanks for looking
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