Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer
Subject: Re: [PolySix] Arpeggiator and Keybed not working
From: Bob Grieb <bobgrieb@yahoo.com>
Date: 2019-05-02
You need to check the ROM code version. I think it should be 214 (not 100% sure). that number is on the chip.
The Mono/Poly has an extra diode on the pcb that the code checks for and if it sees it,
it behaves differently. So some Monopoly's used the same MCU as the PolySix,
in fact my Monopoly is currently running with the MCU that I removed from my PolySix
after installing my replacement MCU design.
Bob