<div dir="ltr"><div dir="ltr">Because there are too many cooks in the kitchen.</div><div dir="ltr"><br></div><div dir="ltr">MIDI originally specified inexpensive components which add about $25 to the BOM cost (1983 economy). It was also the easiest solution to prevent interface problems.</div><div dir="ltr"><br></div><div>The biggest barrier to acceptance of MIDI was getting the manufacturers in agreement and on the same page. Adding a UART to a new protocol would invite all kinds of complications. A UART-based protocol would not only invite disputes on low level programming algorithms, there would be an endless dispute over which UART. Or which microcontroller or CPU with onboard UARTs. Not only are UARTs not inexpensive components, but they go obsolete. The MIDI organization mandated the components that will not go obsolete while mandating the optoisolator but not the specific type (the spec does not mandate 6N138/9 or PC900).</div><div><br></div><div>In 1983 at the birth of MIDI, there were about 10 member manufacturers on the MIDI committee, Today there are over a hundred of them (<a href="https://midi.org/partners">https://midi.org/partners</a>). The organization would have to get tenfold more members to agree on any UART-based proposal, which is a very very tall order Dave Smith had said even getting ten to agree back in 1983 was a major headache that he cares not to repeat.</div><div><br></div><div>Ain't gonna happen.</div><div><br></div><div>MC</div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Jun 4, 2026 at 9:31 AM Benjamin Tremblay via Synth-diy <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Why can’t we just develop a new protocol based on cheap UARTs and passive components that runs I dunno 25x faster and works like patch cords instead of hubs, isn’t gated by some consortium, and is backward compatible if you add a cheap adapter?<br><br>
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