Re: Multiple Instances in Audio MIDI Setup
Re: Multiple Instances in Audio MIDI Setup
- Subject: Re: Multiple Instances in Audio MIDI Setup
- From: Luke Bellandi <email@hidden>
- Date: Tue, 25 Feb 2003 09:39:37 -0800
I had seen behavior like this on earlier versions of the Delta 1010
drivers (it doesn't occur in their current versions however.)
Audio MIDI Setup is a reflection of the hardware setup in your
computer. To localize the problem you can write a simple test tool to
print out the result of MIDIGetNumberOfDevices() and the result of
MIDIGetNumberOfExternalDevices() (header is <CoreMIDI/MIDIServices.h>.
Run that program two or three times. You should get the same number of
MIDI Devices each time. If you get different numbers (based on your
description, I would expect something like 1 the first time, 2 the
second, 3, 4,...) , then the bug is almost certainly in the driver and
not AMS.
If you are getting the same number for each run, then let's talk
off-list about this some more.
Luke.
On Thursday, February 20, 2003, at 06:19 PM, Jaeho Chang wrote:
We're developing a USB MIDI interface. The Apple's generic USB MIDI
driver works very well for this device, so we don't need to develop
our own driver.
However, we have a problem with Audio MIDI Setup. It adds another
device icon and makes the previously added icon gray whenever I launch
it, although I did not unplug and re-plug the device, or restart Mac
or something.
Is this a bug?
Jaeho
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