Korg Poly800/EX800 Users

Hi Mike,
I'm not succeeding in finding a 40HC04 chip or infos about it; do you think a 74HC164 could work in its place for your buffer scheme?


--- In korgpolyex@yahoogroups.com, Michael Hawkins <korgpolyex800@...> wrote:
>
> I would suggest that you buffer the signal with a 40HC04 before sending it to the outside world so that you can be certain that bad things won't happen to the original signal.
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> I put together a small PDF with the recommended circuit diagram and dropped it into the "Clock Sync Output" folder in the "Modifications" section of the files area.
> 
> Mike.
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> ________________________________
> From: Michael Hawkins <korgpolyex800@...>
> To: korgpolyex@yahoogroups.com
> Sent: Tuesday, July 14, 2009 8:09:31 AM
> Subject: [korgpolyex] Poly-800 24ppqn analog sync out very simple mod
> 
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> Pin 6 on IC28 is the sequencer clock signal.
> 
> Mike
> 
> From: static.people <static.people@ yahoo.it>
> To: korgpolyex@yahoogro ups.com
> Sent: Monday, July 13, 2009 5:46:04 PM
> Subject: Poly-800 24ppqn analog sync out very simple mod
> 
> Many years ago I read on a magazine about a very simple mod I made on my old Poly-800: it consisted in extracting a 24ppqn analog timing pulse signal (to sync old drum machines) directly out from a pin of an IC on the synth main board: it's the same clock pulse leading the internal sequencer (and being then converted internally to MIDI digital time sync out messages). Today I got a Poly-800 mkII again but, unfortunately, I don't remember what pin and what chip were the right ones: can anyone help in telling what is the right pin to connect? Then, it's easy to join by a small wire that IC's pin to a free side pin of a (midi) DIN port, so it can work as a midi port or as a din sync port (cause earth is in common on the central pin)! One good choice could be the MIDI IN port, allowing it being used even as a din sync out port, so you could use the Poly-800 as a master timing sequencer with a din24 sync out and a midi sync out working together for non midi
> and midi machines. Now, please, remind me: what is the IC's pin on Poly-800's board giving internal sequencer's tempo analog pulse?!
>