I have a G4 PowerBook that isn’t really being used, so I thought I would run Sysex Librarian on it (there are still old versions on the snooze.net website), to use with my DX7II. It’s pretty ancient though, with a PowerPC CPU, and is running Mac OS X 10.4. I’ve looked at a few MIDI interfaces, like the IK Multimedia iRig MIDI 2, and the M-Audio MIDISPORT 2x2. The iRig MIDI lists OS X 10.6 and later as compatible, the MIDISPORT does list OS X 10.4.9 as compatible.

[Edited Message Follows]

Midi is supported in USB as a Class driver so any no frills USB Midi cable should work. Especially under Mac OS X.

It's when you start spending a bit more on cables/boxes which support multiple types of interface, is when you usually run into problems. This is because they tend to need specific drivers. That said, the basic Midi functionality will often just work regardless.

Source: used to develop USB drivers.

Edit: You could just get yourself a 5 dollar/euro/quid cable. If it's noisy (as I found some of them are) you can cut the earth at the midi end (The ground loop causes hum with some of these cheap Chinese cables).

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On Nov 4, 2019, at 1:48 PM, John Towler <towler@...> wrote:

I have a G4 PowerBook that isn’t really being used, so I thought I would run Sysex Librarian on it (there are still old versions on the website), to use with my DX7II. It’s pretty ancient though, with a PowerPC CPU, and is running Mac OS X 10.4. I’ve looked at a few MIDI interfaces, like the IK Multimedia iRig MIDI 2, and the M-Audio MIDISPORT 2x2. The iRig MIDI lists OS X 10.6 and later as compatible, the MIDISPORT does list OS X 10.4.9 as compatible. There’s also a mystery brand interface on Amazon (DigitalLife) for $60 I might take a chance on. Does anyone have some experience with MIDI interfaces and elderly versions of Mac OS X? Are the interfaces generally compatible, and the manufacturers just list recent versions of OS X to be safe? Or do the interfaces really have problems, or not work, with older versions of OS X?

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On Nov 4, 2019, at 11:45 AM, grantpbt <grantbt@...> wrote:

I agree with everything except the "Edit:" at the end. There are some cheapie cables that have a bug and they mess up Sys Ex. I would definitely go the "class drivers" route, most sellers will indicate this on their pages. I have the iConnectivity mio but it's on the pricier side ($40).? I recommend it.



I find the simple cables with "advanced" features also cause issues. I have another one that can be one-in/one-out or two-outs. This has caused problems with some software and isn't worth the hassle.

Source: Have bought too many MIDI adapters, including a couple of the cheapie ones and one def has the bug.? More info -

GB

On 11/4/2019 11:15 AM, Co Da via Groups.Io wrote:

[Edited Message Follows]

Midi is supported in USB as a Class driver so any no frills USB Midi cable should work. Especially under Mac OS X.

It's when you start spending a bit more on cables/boxes which support multiple types of interface, is when you usually run into problems. This is because they tend to need specific drivers. That said, the basic Midi functionality will often just work regardless.

Source: used to develop USB drivers.

Edit: You could just get yourself a 5 dollar/euro/quid cable. If it's noisy (as I found some of them are) you can cut the earth at the midi end (The ground loop causes hum with some of these cheap Chinese cables).

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On Dec 20, 2019, at 8:51 AM, gregdunn@... wrote:

A couple of things to be aware of: The DX7 and other synths from that era predate the current MIDI spec and really want to have a 5V signal on the line. The MOTU Fastlane (which I have) does this and has always been reliable in my setup, even in the days before OS X. However, I recently bought one of those 4x4 no-name interfaces, and it only delivers 3.3V on the data lines. The result is that it does not reliably send data to my DX7; note triggers work but SYSEX data usually fails. The MOTU works without a hitch.

The other thing is that many librarian apps (like Sysex Librarian) while able to work with class compliant devices, do not work with Core MIDI. They have their own interface code and if you are using Audio MIDI Setup to configure your system, these apps will ignore those settings and possibly cause a conflict with other MIDI apps. You will also not be able to route their data using AM Setup.

I just went through all of this within the last week, and it was a lot of effort to troubleshoot because the symptoms were hard to observe repeatably.