I fully agree about maintaning the external appearance. i like the sound of a retrofit kit, and though it has been pointed out that when it gets to a certain price one may as well buy a juno, the circuitry means it just won't be the same. I like my ex800 and i'm happy to wait for the developement of a retrofit kit (not enough know how to build one or programme from scratch i'm afraid) rather than carve it up. patrioticduo wrote: > I did entertain the idea of replacing the seven segment displays with > a 2x24 backlit LCD. But even that is too much to spend. > > However, I am planning on putting an LCD interface onto the retrofit > kit so that I can plug a display in and do diagnostics with it. Also, > I have a funny feeling that I may have to use the LCD to determine the > exact memory map used for all the parameters and patch space use. > > But the cost of the LCD would be too high for any retrofit kit. I > mean, when you can pick up all sorts of much higher powered > synthesizers for a few hundred bucks what would the point of it all be? > > This upgrade is 90% ROM and RAM. A few digital pots will allow > controlling some mod's but I simply refuse to entertain carving up the > keyboard, drilling holes and messing with the external appearance. > This mod is going to be an internal upgrade. No messing up a great > looking vintage keyboard. > > I want mine to look like a Poly 800 for my grandchildren. > > --- In korgpolyex@yahoogroups.com, Marcus Wilson <JB@...> wrote: > > > > Speaking of new features, one thing i was thinking would be uber cool > > would be to actually display the parameter info in the decal showing > > the parameters and ranges, and having up/down switches under the up/ > > down parameter switch area. As my own experience is in membrane > > switches, getting the switch side of things is pretty simple, its the > > control and the multiplex/demultiplex of the parameter info display > > that got too hard. > > > > Imagine seeing all of the parameters on the poly displayed, and being > > able to tweak each one at will, instead of needing to fumble thru the > > parameters one at a time > > > > JB over > > > > On 24/05/2006, at 3:19 PM, jure zitnik wrote: > > > > > if you're planning the digital pot - why not replace the awkward up/ > > > down buttons with a rotary encoder? i guess it's an easy job! > > > > > > jure > > > > > > On 5/23/06, patrioticduo <patrioticduo@...> wrote: > > > I'm trying to keep the scope within the realms of sanity. > > > > > > So I'm placing initial limits on the hardware upgrade. > > > > > > Required outcome: Upgrade the Poly 800 RAM and ROM to support > > > additional CPU programming related functions. A board will be > > > developed as part of a retrofit kit that will plug into the existing > > > ROM socket. The card will have a 2764 EPROM, a 6264 RAM, a 74LS138 > > > decoder. > > > > > > Optional outcome: Provide the needed hardware to integrate several > > > well established mod's (moog slayer, 12/24db filter switch, etc) into > > > the CPU control and user programming system. Thus, add a 74H174 (6 bit > > > latch) and a digital potentiometer and other chips as needed to allow > > > existing and future mod's to be controlled by the CPU. > > > > > > I think it very unlikely that we'll run out of CPU cycles handling the > > > required outcomes. I think it possible that we may run into CPU cycle > > > restrictions trying to satisfy the optional outcomes. > > > > > > If we do find that we run out of CPU cycles then I'm hoping that I'll > > > know so much about the code that I can port the whole thing to a PC > > > and release a virtual Poly 800 that will run on your Linux box. > > > > > > Mike H. > > > > > > --- In korgpolyex@yahoogroups.com, "austeritygirlone" <ziggystar@> > > > > > > wrote: > > > > > > > > --- In korgpolyex@yahoogroups.com, "patrioticduo" <patrioticduo@> > > > > > > > > Keep up the good work! After you've figured out how to controll the > > > > peripheral synthstuff from the cpu and written a basic OS, that gets > > > > somethingn done I'm sure that other people will join your efforts > > > > (like me). But of course doing this is a major obstacle. > > > > > > > > And have you thought about replacing the CPU by a more modern > > > > pincompatible version with more RAM, ROM and more MHz? I know that > > > > this is possible with the Roland JX-3P CPU (some Intel thing). > > > > > > > > > > > > > > > > > > > > > > > > > SPONSORED LINKS > > > Music sampler Music synthesizers Synthesizer music > > > Sampler > > > > > > YAHOO! GROUPS LINKS > > > > > > Visit your group "korgpolyex" on the web. > > > > > > To unsubscribe from this group, send an email to: > > > korgpolyex-unsubscribe@yahoogroups.com > > > > > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service . > > > > > > > > > > > > YAHOO! GROUPS LINKS > > > > > > Visit your group "korgpolyex" on the web. > > > > > > To unsubscribe from this group, send an email to: > > > korgpolyex-unsubscribe@yahoogroups.com > > > > > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > > > > > > > > > > > > > > > SPONSORED LINKS > Music sampler > <http://groups.yahoo.com/gads?t=ms&k=Music+sampler&w1=Music+sampler&w2=Music+synthesizers&w3=Synthesizer+music&w4=Sampler&c=4&s=79&.sig=hc9xCPkXzzdNWRHibPZApQ> > Music synthesizers > <http://groups.yahoo.com/gads?t=ms&k=Music+synthesizers&w1=Music+sampler&w2=Music+synthesizers&w3=Synthesizer+music&w4=Sampler&c=4&s=79&.sig=2Vb7gWoMw5sUY3DcS2zScA> > Synthesizer music > <http://groups.yahoo.com/gads?t=ms&k=Synthesizer+music&w1=Music+sampler&w2=Music+synthesizers&w3=Synthesizer+music&w4=Sampler&c=4&s=79&.sig=zcWFtuqMYsRz1SxVMWGgrw> > > Sampler > <http://groups.yahoo.com/gads?t=ms&k=Sampler&w1=Music+sampler&w2=Music+synthesizers&w3=Synthesizer+music&w4=Sampler&c=4&s=79&.sig=Luf8x1J6dIN8D_3s1pjRkw> > > > > ------------------------------------------------------------------------ > YAHOO! 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Message
Re: [korgpolyex] Re: Disassembly update - II
2006-05-25 by archeologist