Discussion about the Korg PolySix synthesizer

Hi Andrew; I'll investigate this further.

The problem didn't go away when using a different processor.

The problems with the missing LFO modulation and so on could be narrowed
down to the parameters controlled by IC28/29; the parameters controlled by
IC34/35 seem not to be affected. The parameters simply jump to the panel
value.
Interestingly enough sometimes it is not possible to call up the correct
parameters afterwards. For example: I program patch A1 to use 4' and store
it. Afterwards I change it on the panel to 16' and call up patch A1 again.
Many times this works; but sometimes the sound remains at 16'. So I guess
either the RAM is corrupted or somehow the stored value isn't getting
through IC28/29.

The occasional resets still happen with RAM removed; however I haven't
gotten multiple patch LED's so far with this constellation (it seems to
switch back to A1 always). It seems that the time between resets is quite
long (right now it has been running for about 20 minutes in manual mode
without switching back to A1 on its own).