Korg Poly800/EX800 Users

I was surfing Ebay yesterday when an interesting item caught my eye...

An original Poly-800 II Service Manual complete with schematics and 
parts listing. Whoohoo!!! I snagged this puppy without any 
hestitation. Now maybe it will be a bit easier to play around with 
these mods I've been trying to get sorted out.

I spent the better part of an afternoon shotgunning components in the 
feedback loop for the noise level mod without really affecting the 
drone frequencies I've been trying to eliminate. I'm thinking maybe 
there's a better place to control this level, like after the 2nd 
stage of the 5223 op amp before it goes into the VCA. If I get 
anywhere I'll post the results of my efforts. Has anyone listened to 
the sample I posted of the drone sound???? Any comments???? I know 
it's summer here in the states and everyone is off doing their own 
thing...

When I get this manual I can scan it if anyone is interested. I doubt 
there are many of these docs around nowadays. There are many other 
trimpots in the Poly-800 II that could be moved to the front panel 
once their function is understood. The 3 trimpots on the little 
daughter board have me wondering what they do????

Well back to playing around with my DarkStar. I found a Vocoda kit to 
install in this beastie.

->->->-> Mike, Keep up the great work!!!! You're still the number one 
man with a plan in my book! Someday I would like to see your program 
flowcharts Mr. Einstein. (I'm not being facetious.)

Fran

What's a flow chart?!

--- In korgpolyex@yahoogroups.com, "narfman96" <narfman96@...> wrote:

>
> I was surfing Ebay yesterday when an interesting item caught my eye...
> 
> An original Poly-800 II Service Manual complete with schematics and 
> parts listing. Whoohoo!!! I snagged this puppy without any 
> hestitation. Now maybe it will be a bit easier to play around with 
> these mods I've been trying to get sorted out.
> 
> I spent the better part of an afternoon shotgunning components in the 
> feedback loop for the noise level mod without really affecting the 
> drone frequencies I've been trying to eliminate. I'm thinking maybe 
> there's a better place to control this level, like after the 2nd 
> stage of the 5223 op amp before it goes into the VCA. If I get 
> anywhere I'll post the results of my efforts. Has anyone listened to 
> the sample I posted of the drone sound???? Any comments???? I know 
> it's summer here in the states and everyone is off doing their own 
> thing...
> 
> When I get this manual I can scan it if anyone is interested. I doubt 
> there are many of these docs around nowadays. There are many other 
> trimpots in the Poly-800 II that could be moved to the front panel 
> once their function is understood. The 3 trimpots on the little 
> daughter board have me wondering what they do????
> 
> Well back to playing around with my DarkStar. I found a Vocoda kit to 
> install in this beastie.
> 
> ->->->-> Mike, Keep up the great work!!!! You're still the number one 
> man with a plan in my book! Someday I would like to see your program 
> flowcharts Mr. Einstein. (I'm not being facetious.)
> 
> Fran
>

Shows how much of a programmer I am. Not!

You must have some way of denoting all the sub-routines, program 
branches and loops.

I used the old electronics analogy of water to circuitry or flow 
chart. Ooops!

Fran

--- In korgpolyex@yahoogroups.com, "korgpolyex800" 
<korgpolyex800@...> wrote:
>
> What's a flow chart?!
> 
> --- In korgpolyex@yahoogroups.com, "narfman96" <narfman96@> wrote:
> >
> > I was surfing Ebay yesterday when an interesting item caught my 
eye...
> > 
> > An original Poly-800 II Service Manual complete with schematics 
and 
> > parts listing. Whoohoo!!! I snagged this puppy without any 
> > hestitation. Now maybe it will be a bit easier to play around 
with 
> > these mods I've been trying to get sorted out.
> > 
> > I spent the better part of an afternoon shotgunning components in 
the 
> > feedback loop for the noise level mod without really affecting 
the 
> > drone frequencies I've been trying to eliminate. I'm thinking 
maybe 
> > there's a better place to control this level, like after the 2nd 
> > stage of the 5223 op amp before it goes into the VCA. If I get 
> > anywhere I'll post the results of my efforts. Has anyone listened 
to 
> > the sample I posted of the drone sound???? Any comments???? I 
know 
> > it's summer here in the states and everyone is off doing their 
own 
> > thing...
> > 
> > When I get this manual I can scan it if anyone is interested. I 
doubt 
> > there are many of these docs around nowadays. There are many 
other 
> > trimpots in the Poly-800 II that could be moved to the front 
panel 
> > once their function is understood. The 3 trimpots on the little 
> > daughter board have me wondering what they do????
> > 
> > Well back to playing around with my DarkStar. I found a Vocoda 
kit to 
> > install in this beastie.
> > 
> > ->->->-> Mike, Keep up the great work!!!! You're still the number 
one 
> > man with a plan in my book! Someday I would like to see your 
program 

> > flowcharts Mr. Einstein. (I'm not being facetious.)
> > 
> > Fran
> >
>

Fran,

I was just being facecious. I haven't resorted to flow charts yet
because the disassembly is actually not too difficult to read - yet.

I happened to commute to work on the train this morning rather than
drive so I had an hour to work on the note on event handler and was
able to work out some more details about that. Most important, I
discovered the note value table for each of the eight DCO's and I
think I've found the table that holds the sustain/release mode for
each DCO also.

I also seem to have found the EG3 retriggering mechanisms and the
filter cutoff adjustment code snippets.

These are big improvements in my understanding of the real time
handling of note generation. From what I've seen of the EG3 code so
far, it looks like we could probably fit another EG into the code.

I don't own a Poly 800 MKII and its electronics is so different to the
original MKI that I don't propose to do anything on the MKII at all.
Someone else would have to pick up the ball and run with mods for the
MKII so good luck with it.

Mike.

--- In korgpolyex@yahoogroups.com, "narfman96" <narfman96@...> wrote:

>
> Shows how much of a programmer I am. Not!
> 
> You must have some way of denoting all the sub-routines, program 
> branches and loops.
> 
> I used the old electronics analogy of water to circuitry or flow 
> chart. Ooops!
> 
> Fran
> 
> --- In korgpolyex@yahoogroups.com, "korgpolyex800" 
> <korgpolyex800@> wrote:
> >
> > What's a flow chart?!
> > 
> > --- In korgpolyex@yahoogroups.com, "narfman96" <narfman96@> wrote:
> > >
> > > I was surfing Ebay yesterday when an interesting item caught my 
> eye...
> > > 
> > > An original Poly-800 II Service Manual complete with schematics 
> and 
> > > parts listing. Whoohoo!!! I snagged this puppy without any 
> > > hestitation. Now maybe it will be a bit easier to play around 
> with 
> > > these mods I've been trying to get sorted out.
> > > 
> > > I spent the better part of an afternoon shotgunning components in 
> the 
> > > feedback loop for the noise level mod without really affecting 
> the 
> > > drone frequencies I've been trying to eliminate. I'm thinking 
> maybe 
> > > there's a better place to control this level, like after the 2nd 
> > > stage of the 5223 op amp before it goes into the VCA. If I get 
> > > anywhere I'll post the results of my efforts. Has anyone listened 
> to 
> > > the sample I posted of the drone sound???? Any comments???? I 
> know 
> > > it's summer here in the states and everyone is off doing their 
> own 
> > > thing...
> > > 
> > > When I get this manual I can scan it if anyone is interested. I 
> doubt 
> > > there are many of these docs around nowadays. There are many 
> other 
> > > trimpots in the Poly-800 II that could be moved to the front 
> panel 
> > > once their function is understood. The 3 trimpots on the little 
> > > daughter board have me wondering what they do????
> > > 
> > > Well back to playing around with my DarkStar. I found a Vocoda 
> kit to 
> > > install in this beastie.
> > > 
> > > ->->->-> Mike, Keep up the great work!!!! You're still the number 
> one 
> > > man with a plan in my book! Someday I would like to see your 
> program 
> > > flowcharts Mr. Einstein. (I'm not being facetious.)
> > > 
> > > Fran
> > >
> >
>