Archive of the former Yahoo!Groups mailing list: Korg Poly800/EX800 Users

Two great questions with long winded answers.

First, I think the MSM5232 might be able to do some primitive
frequency slides. I'm just not certain how fine grained the slide
would be.

In my searching on the Internet, all I could find on the MSM5232 TG
was emulation C code written by a guy called Jarek Burczynski for the
MAME project. The MAME project is a freeware Arcade game emulator.
Jared wrote the emulation for the MSM5232 chip because so many of the
old arcade games used this chip for sound generation. His code is not
commented nearly well enough for me to determine just exactly what the
chip can or cannot do. And to make matters worse, trying to work out
what a chip does from emulation code is kind of backward. I've called
numerous arcade repairers looking for the datasheet. I've tried OKI
themselves, who were helpful but ultimately failed to provide a
datasheet. And I've called a couple of other old chip distributors.
All attempts so far have failed.

I still have some inquiries out there. So hopefully, I will still get
my hands on the datasheet. In the end though, if I have to reverse
engineer the thing from scratch then so be it.

Second, in my opinion mono node will operate in both unison and non
unison modes. And mono mode will be designed to operate closely with
the arpeggiator and the portmento functions. If you enable unison then
the arpeggiator and portmento functions (if also enabled) operate on
all 8 voices simultaneously. If you enable mono mode without unison
then arpeggiator would be activated per individual voice and
portamento would slide each voice independently as well.

Right?

Mike.