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        MIDI-OX >> Questions and Discussion >> Fatal Looping observed with XG-Gold & Midi-Ox
        
(Message started by: rex on Nov 12^th, 2002, 2:41am)

Title: Fatal Looping observed with XG-Gold & Midi-Ox
Post by rex on Nov 12^th, 2002, 2:41am

Hi,

I have a problem as follows

System Setup
-------------------
I'm running Midi Ox 6.5.0 and Midi Yoke on a Windows 2000 Machine.
I'm driving an XG compatible keyboard with Cakewalk Pro Audio 9 and using XG-Gold 3.0 to send the SysEx data and thus control the effects on the fly.

Midi OX is configured thus:

XG-Gold ---> MYoke 1 --> MidiOx

Keybd_Out--->Cakewalk --> MYoke 2 --->MidiOx --> Keyboard_In

Problem
--------

When run a pre-recorded Midi Track looping continuously through Cakewalk, and then I adjust some of
the controller settings using XG-Gold (Which sends SYSEX to the Keyboard), I find that eventually
the whole system slows down, and MIDI-OX shows excessive SYSEX activity on its monitor.

Even when I stop the Cakawalk track, the excessive activity continues, as though it is generated by XG-Gold

Taking a stapshot of the SYSEX axtivity I get the following on both input and output of MIDI-OX. It is some sort of Fatal loop occuring somewhere.

TIMESTAMP IN PORT STATUS DATA1 DATA2 CHAN NOTE EVENT
000149F3 3 15 F0 Buffer: 9 Bytes System Exclusive
SYSX: F0 43 10 4C 08 09 12 4C F7
000149F3 3 15 F0 Buffer: 9 Bytes System Exclusive
SYSX: F0 43 10 4C 08 09 12 4C F7
000149F3 3 15 F0 Buffer: 9 Bytes System Exclusive
SYSX: F0 43 10 4C 08 09 12 4C F7
000149F3 3 15 F0 Buffer: 9 Bytes System Exclusive
SYSX: F0 43 10 4C 08 09 12 4C F7
000149F3 3 15 F0 Buffer: 9 Bytes System Exclusive
SYSX: F0 43 10 4C 08 09 12 4C F7

Notice that the line is always the same with the same timestamp.

I can't tell whether the problem lies with Midi-OX or with XG-Gold.

I'd appreciate any thoughts.

regards

rex

Title: Re: Fatal Looping observed with XG-Gold & Midi-Ox
Post by Jamie OConnell on Nov 14^th, 2002, 2:48am

What you describe sounds like a Long Messgae (buffered) MIDI feedback loop. Make sure you don't have the same numbered MIDI Yoke port opened for both input and output is a single application, or a loop amongst all applications. Some programs automatically attach all MIDI input devices...