Florian,

very strange. I have no idea why this solved the problem. The contents of
the internal RAM should have no effect on the function as it is filled with
certain values during power on. The reset during power on causes the
software to start at a certain position (reset position) and the contents of
the RAM should not matter. I'll send a copy to Christian. Maybe he has an
idea for this strange behaviour.

Dieter

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto: Doepfer_a100@yahoogroups.com ]Im Auftrag von Florian Anwander
> Gesendet: Montag, 14. August 2006 09:36
> An: Doepfer_a100@yahoogroups.com
> Betreff: Re: 1 Again: ms404 only playing one tone across
> thewhole 5 oct range
>
>
> Hi,
>
> I could solve the problem by an ugly trick (this is a "don't do this at
> home" description): First I removed the EPROM and switched the MS-404 on
> and after some seconds switched it off again. I replugged the EPROM and
> tried the MS-4040, but the action hadn't changed anything.
> Then I removed the EPROM again, switched the MS-404 on and pressed my
> fingers on the soldering side of the pcb on the pins of the processor.
> The fingers seem to act like a pulldown resistor. At least the internal
> RAM of the processor seems to have been resetted by this action. Now the
> learn mode accepted Program changes again and I could set the assignmode
> to last note again.
>
> Nevertheless it seems, that the processor of the MIDI-interface MS-404
> reacted wrong on some MIDI messages from Logic while the interface was
> in the bootup phase.
>
> Regards, Florian
>
> Florian Anwander wrote:
>
> > Hi,
> >
> >
> > I am running in the same problem as Mark Kono did in June:
> > My MS-404 worked fine with MIDI; I used it as MIDI-Slave of a MIDI
> > keyboard or with an Alesis MMT-8 as Sequencer. Now I connected the
> > MS-404 to Logic Pro and it shows the same behaviour as Mark described:
> >
> > MIDI-Note on produces a positive Gate and a Note CV of 0 Volt.
> > I can change the reference note in MIDI-Learn Mode, but the Learn Mode
> > appearently does not react on Program changes, because I cannot change
> > e.g. the trigger polarity (prgchng #7 or #8).
> >
> > I usually have the EPROM with revision 1.05, but also tried
> Revision 1.03.
> >
> > I tried the reset described in the Manual of the MCV4(as recommended
> > from Dieter): press and hold learn butt, switch on and hold until learn
> > LED starts blinking; after that switch off an on again. But it did not
> > work: after switching on with pressed Learn-button the Learn-LED never
> > started blinking.
> >
> > So how can I make the MS-404 react on MIDI again
> >
> > Florian
> >
> > PS: The MS-404 works fine under control of an external CV in. There is
> > no voltage change happening already at the output of the D/A-converter.
> > Hardware defect in the D/A is possible, but I don't assume so, because
> > the Gate is working.
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>