<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I second Hal Chamberlin's book as a great resource, but I'd also say that I learned most from reading old service manuals. The Sequential ones by Stanley Junglieb are particularly good and give an overview of how the system works before diving into the details.<div class=""><br class=""></div><div class="">Tom</div><div class=""><br class=""><div class="">
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<div><br class=""><blockquote type="cite" class=""><div class="">On 4 Feb 2022, at 10:31, Jared Anderson via Synth-diy <<a href="mailto:synth-diy@synth-diy.org" class="">synth-diy@synth-diy.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Hello,<div class=""><br class=""></div><div class="">You might like to try to get a hold of a copy of "Musical Applications of Microprocessors" by Hal Chamberlin.</div><div class="">There may be PDFs floating around on the net somewhere...</div><div class=""><br class=""></div><div class="">Cheers</div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 4 Feb 2022 at 11:25, ackolonges fds via Synth-diy <<a href="mailto:synth-diy@synth-diy.org" class="">synth-diy@synth-diy.org</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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Hi Everyone,</div>
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As the local SDIYer I sometimes get asked to try and fix synths from the 80s like various Rolands, Korgs, Oberheims etc. and I generally just try to pinpoint the rough area of the issue and replace logic chips until the issue is resolved...</div>
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Most of these synths have a CPU connected to everything via a parallel address bus and a parallel data bus, with all sorts of glue logic chips doing various things. They also usually just have 1 DAC, time-domain multiplexed to all of the different parameters
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Obviously this is very different to the modern ways that microcontrollers and DACs are used in synths, and since I wasn't around in the 80s, these older architectures are very foreign to me. To aid in my troubleshooting efforts, I would love to better understand
the details of how these architectures work, so I was wondering if anyone on here would be able to point me to any resources that could explain these types of systems to me, be they websites, articles, or books?</div>
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Thanks a lot for any advice you might have.<br class="">
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