I tried about a year ago with details in this thread: http://www.atari-forum.com/viewtopic.php?f=51&t=35184
At that time I was using the Mac’s built-in IAC (inter-applications midi bus) for input & output, with the same results. I got my hopes up this time because my MOTU interface was seen by Hatari, but no joy.
On Jan 27, 2020, at 11:48 AM, Michel Tavir <tingo@xxxxxxxxxxxxx> wrote:Re: [hatari-users] Re: [hatari-users] Re: [hatari-users] Question regarding Hatari and MANDALA.PRG
Hello again Eero,
Here is as far as I have managed.
I found in the Utilities installed by the Mac OS (9 years ago!) an application called Audio MIDI Setup. It opened several windows:
1. Audio Devices - Built-in Output, set to Headphones as "Source" (?)
2. Midi Studio, where I select "IAC Driver" from a default configuration
3. IAC Driver Properties - "Device is online", Ports: Bus 1, Connectors for: Bus 1 = Midi In=1 / Midi Out=1
In Hatari 2.2.1: F12, Devices, Enable MIDI emulation, both input and output set to "IAC Driver Bus 1"
Sounds like it should work, doesn't it? But it doesn't.
Note that:
- my Mac is fully sound-capable (also from Linux or Windows virtual machines, for example)
- I tried using the Emu TOS etos512k.img instead of the built-in tos.img. No difference.
- could it be that more stuff is needed on the C drive, besides the MANDALA folder (as I remember there used to be on a TT: accessories etc.)?
- F12, Sound: I am perfectly able to record to a wav file, but at playback it is completely "devoid" of any sound.
- there are a few glitches in my installation (mouse, saving desktop etc.), but the only one I believe might be relevant is this warning when I launch Hatari: "Can_not use the hard disk image file '/Applications/Hatari/' since its size is not a multiple of 512". Which I don't understand any more than most settings under F12.
It seems that it all should be so easy. Apologies if it is and it's just me being unable to figure it out.
Michel
Michel Tavir wrote on 27/01/20 00:01:
Thank you, Eero, that clears up things. I will try to figure out what there is of MIDI
software for Macs of that generation (OS 10.6 Snow Leopard). In the meanwhile if anyone
else on this list knows about such software, I'll be happy to hear about it.
Michel

From: Eero Tamminen
Reply-To: <hatari-users@xxxxxxxxxxxxxxxxxxx>
Date: Mon, 27 Jan 2020 00:17:24 +0200
To: <hatari-users@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [hatari-users] Re: [hatari-users] Re: [hatari-users] Question regarding
Hatari and MANDALA.PRG
Hi,
On 1/24/20 1:17 PM, Michel Tavir wrote:
>> I have managed to install Hatari on my MacBook Pro with Mac OS 10.6.8 Snow
>> Leopard, and for now I can live with the few bugs I came across. I did get
>> MANDALA running ‹ the graphics part at least, because for some reason I
>> cannot get any sound at all. Yet pressing keys does result in a click sound,
>> so it's not like this installation of Hatari isn't sound-capable (as was the
>> case, as far as I could understand, with MagicMacX, which I tried some years
>> ago).
Mandala sound output is through MIDI and it seems
to work fine.
You need a MIDI device and configure Hatari to
use it.
I don't have Mac, but like Linux, it might have
some software MIDI synthetizers which you can use
if you don't have real MIDI HW.
Note: Hatari PortMidi code enumerates MIDI devices
at startup, so your MIDI device needs to powered &
connected when Hatari starts, otherwise your
device doesn't show up in Hatari's devices dialog.
- Eero
PS. Hatari has supported MIDI on Linux since
v0.45, but we got MacOS & Windows MIDI support
(with PortMidi) only for Hatari v2.1 release.
(Hatari devs don't Have Mac or Linux, so support
for those platforms is through 3rd party code
contributions, this includes the MacOS Hatari
GUI.)