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lost factory rom waveform(s)

lost factory rom waveform(s)

2019-08-09 by nils.vdp@...

Hi Guys,


My prophet VS was updated from 1.2 to 1.4

Everything seems to work fine, but waveform 126 is no longer silence..

I used this silent waveform a lot to mute oscillators. Can a firmware-change alter

the rom waveforms?


Don't see a way of getting the factory wave(s) back. Already sent factory waveforms and presets

to the machine. But normally nothing should be able to change rom waveforms, right?


I still need to check if the other waveforms did alter as well. 32 sine, 33 saw and 34 square seem to be ok.

Re: lost factory rom waveform(s)

2019-08-09 by shalebridge@...

I tried to respond earlier but not sure if the message made it.

Yes, the ROMs have the waveforms in them. I tried testing all I could but its nice to get some bug reports from the field. It is possible some of my code and some dumb stuff I did at the end of the ROM may have screwed up the silent wave. I've been optimizing the original code and mine, so all my hacked code at the end of the ROM will be moved anyway. Once I figure it out I will send out the new version free to anyone who has already bought a copy. Sorry about that!

Re: lost factory rom waveform(s)

2019-08-09 by nils.vdp@...

No problem! I'm in fact pleased with the fact I can attribute to a v1.5
Gregor from Stereoping was also kind to provide me a new stereoping-firmware
that works perfect with 1.4, many thanks to him as well!

Can I ask/suggest one single thing (for a v1.5)?

As you know each played note on the VS triggers the mixer envelope; once or looped.
It would be extremely nice if this could be turned off as an option.

The big benefit of this would be the fact that the joystick can be set in a certain position, allowing it to have a remaining (fixed) effect on the mix. This way if the joystick would be set to "B" you would be able to play and only hear oscillator B, without having to put oscillators A, C and D to waveform 126 (the silent waveform) to silence them since simple volume controls for oscillators are lacking on the synthesizer.

Using the programming software Max Msp I was able to program this behaviour, but with a big work around. I made it work so that when the joystick is moved it's coordinates are duplicated to all points of the mixer envelope (points 0-4) so they all move in sync with the joystick. Since they coordinates are the same, the envelope is 'fixed' at the position of the joystick.

Maybe this could be implemented in your firmware.

to put it in less words: a switch could copy the joystick coordinates to all the mixer envelope points so that the position of the joystick is kept when playing new notes on the keyboard. Of course the problem would be if you turn the mix envelope back on...it should reload the original coordinates.

I'm not sure if this is a doable option, but it is was I personally miss the most on the VS.




Re: lost factory rom waveform(s)

2019-08-09 by shalebridge@...

Yep, I tried my old version and sure enough the code is playing as the silent wave!

The version I've presently been working on has already fixed the problem. Unintentional bug fix!

There are two MIDI related bugs still in the original OS, so I'm trying to figure those out as well.


The "live" joystick has been on the wishlist since the beginning. Hopefully can figure that one out. I also found the Arpeggiator key-reset code so I can make that selectable too.

Re: lost factory rom waveform(s)

2019-08-12 by nils.vdp@...

Sounds great! do you happen to have some kind of time frame in mind in which a new version could be released..?

Re: lost factory rom waveform(s)

2019-11-05 by nils.vdp@...

Hi again,

I followed your blog on the firmware updates. Concerning the oscillator ranges:
I understand that the double range of -24.00 to 24.00 would have been cool but difficult, but how much work would it be to simply "rename" the current range of '0.00 to +24.00' as '-12.00 to +12.00'?

I'm using a VS rack, my midi keyboard can easily be transposed up and down octaves. It would be super nice to have -12.00 to +12.00. At the moment I use +12.00 as the standard so I can tune oscillators slightly down with for a tuning of for example +11.80. It would have been much nicer though to have +0.00 and -0.20 in this example. Just an idea :)

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