Re: Sysex problems! POSSIBLE COREMIDI BUG
Re: Sysex problems! POSSIBLE COREMIDI BUG
- Subject: Re: Sysex problems! POSSIBLE COREMIDI BUG
- From: "Peter Karlsson" <email@hidden>
- Date: Thu, 03 Jul 2003 13:09:23 +0000
It seems to be a bug in CoreMIDI!
I can't receive 2 sysex dumps after each other without getting 10 garbage
bytes between the 2 dumps. But if I receive for example a program change
after the first sysex dump I can receive a sysex dump in a correct way. Can
someone at Apple or other user on this list confirm this?
Peter
From: "Peter Karlsson" <email@hidden>
To: email@hidden
Subject: Sysex problems!
Date: Wed, 02 Jul 2003 16:18:02 +0000
Dear list!
I am trying to transmit a dump from my Roland MKS-50 module to my Mac. I
press the buttons on the MKS-50 and it starts to transmit. The sysex dump
is 266 bytes in size and repeats 16 times for a total of 4256 bytes. No
problem so far. But when I look at the dump in memory I can see a very
strange result.
The first of the 16 dumps begins with F0 and ends with F7 as expected. And
the dump is 266 bytes in size, aslo expected but...
After that I have the following numbers 00 00 00 00 00 00 00 01 F7 F7, and
it happens to be exactly the same numbers as the end of the first dump if
we take away the last F7. After that I can see a correct dump again. And
after that dump the same behavior. In MyReadProc I only store a byte to
memory and increase the pointer by 1 byte. Can anyone please tell me what's
going on here?
I have tried the same dump with Kurt's MIDI Monitor and everything works as
expected.
Peter
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