Poly Evolver Keyboard Operating Systems

The Poly Evolver Keyboard has three distinct types of processors, Main, Voice, and DSP, and each has its own operating system.

To check the installed versions in your Poly Evolver Keyboard:

Hold the RESET button and press 1 in the number keypad. The Main, Voice, and DSP versions are displayed.

This is the only accurate method of determining the installed version. The paper labels on the chips are not to be relied upon and the editor software may not display the correct version.

OS Download

The Main, Voice, and DSP operating systems are available for download in SysEx format. Carefully read the ReadMe file and installation notes below before installing the OS to avoid causing any serious problems.

Installation

The OS can be installed using any of the methods discussed in Operating Systems for DSI Products. When the Main SysEx load begins, the display reads "Main OS Load" and counts down for the duration of the transfer. When the countdown concludes, the display changes to "Writing Now!" As the OS is being written, the front panel LEDs will flash in sequence and then normal operation will resume. Do not turn off the Poly Evolver while the OS is writing!

When the Voice SysEx load begins, the display reads "Voice OS Load" and counts down for the duration of the transfer. When the countdown concludes, the display changes to "Writing Now!" As the OS is being written, the front panel LEDs will flash in sequence and then normal operation will resume. Again, do not turn off the Poly Evolver while the OS is writing.

While the DSP SysEx loads the display reads "DSP OS Load" and counts down. When the countdown concludes, the front panel LEDs flash in sequence as the DSP OS is written to the flash memory. Then, normal operation resumes. Once again, do not turn off the Poly Evolver while the OS is writing.

The pitch and mod wheels my need to be recalibrated after installing the OS. To do that:

1. Turn the mod wheel all the way off (down), and while also holding the pitch wheel off, hold down Reset and press 4 on the keypad.
2. Return the pitch wheel to center, and hold Reset and press 5 on the keypad.
3. Move the Mod wheel all the way on (up), and while also holding the pitch wheel all the way on, hold Reset and press 6 on the keypad.

Troubleshooting

Updating the OS is generally very easy, but occasionally there are problems. The most common symptom is that the countdown stops before the OS has transferred completely. This typically occurs because either the data transfer is overwhelming the synth or because some spurious MIDI data (such as clocks or merged data) is affecting the transfer. In the first case, see if you can reduce the transfer rate and/or buffer size of the program being used to transfer the SysEx data. In the second case, make sure there is no other MIDI data on the buss while loading the OS. In rare cases, MIDI drivers have also been known to interfere with SysEx transfers. If all else fails, check for updated drivers for your interface or try another MIDI interface.