3 ms·
Sure whatever, to be clear the RS-422 port on a Mac was a generic serial port not a MIDI port per se. If you were running a PC at the time you would often use t
by epcoa 2y ago
Sure whatever, to be clear the RS-422 port on a Mac was a generic serial port not a MIDI port per se. If you were running a PC at the time you would often use the 9 or 25 pin RS-232 port for the same purpose (which is the same port used for a modem or some mice). A number of period devices would have a selector switch between RS-422 and RS-232 for a single 8 pin mini DIN input.
https://support.roland.com/hc/en-us/articles/201951959-PMA-5-Changing-the-Hardware-Switch-settings-on-a-Roland-Serial-MIDI-Device https://support.roland.com/hc/en-us/articles/201951959-PMA-5...
- detourdog 2y agoI think I’m more focused on protocol similarities than the pinout.
- epcoa 2y agoOf which there are none because RS-422 is not a protocol. And if you’re talking about MIDI the electrical interface part of the spec (ie what can actually be compared to RS-422), not the protocol part, it is a point to point isolated current loop system - it is hard to be much different than RS-422 a differential voltage multipoint system. That you can run the MIDI protocol over RS-422 is no more notable than that you can run it over smoke signals or semaphores. In practice almost every common short to medium range interconnect has been used commercially for MIDI at some point, including SCSI, Ethernet, bespoke fiber in addition to what was already said. https://www.rfc-editor.org/rfc/rfc4824.txt https://www.rfc-editor.org/rfc/rfc4824.txt
- xcv123 2y agoThey are not comparable. RS-422 is a specification at the physical/electrical layer. MIDI is a protocol at the logical layer. You can transmit MIDI over RS-422. However you cannot transmit RS-422 over MIDI. That makes no logical sense. Like saying you could transmit a chicken sandwich over HTTP.