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Subject: Re: [korgpolyex] Demodulating and Encoding the Audio/Tape Data

From: Gordonjcp <gordon@...>
Date: 2015-05-30

On Fri, May 29, 2015 at 08:56:02PM +0000, Michael Hawkins korgpolyex800@... [korgpolyex] wrote:
> What does the memory map look like? Is there room to just stick a 27128 in to replace the 2764? You'd likely need to do something clever with the address decoding but that's no biggie.
> That is what the HAWK does, except that if you're going to add a 27128 then you might as well as the HAWK which adds tons of additional space. So that is what I did. Did you ever buy the HAWK? I forget if you did.

I haven't. I'm almost ashamed to say my Poly-800 is still sitting in a box with half the keypad not working, having discovered it's one of the IO latches that's failed, and I've done exactly shit all with it for about three years. Once I get a few more projects off the bench I'll dig it out again.

Maybe I'll just stick a 27128 with an EX ROM in one half and a Poly ROM in the other half, and add a toggle switch to jump between them when I want to use it as a keyboard and when I want to use it with MIDI.

I'd like to get a Hawk kit at some point, but again - too many projects!

> The MDK kit from Korg was about the worst thing I've ever seen in a retrofit kit. It added only some of an additional 8K ROM and the work required to do the install was awful. And only just to add sysex. Wow, that was a bad retrofit kit.
>

What was the MDK kit?

--
Gordonjcp MM0YEQ