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Re: DX7 ROM Card with 256 x 32 patches
I have to say I felt it was abandoned too and never saw it on eBay.?
I did purchase a 3D printed cartridge enclosure (not sure it was the same seller), but would have had to cut it in half to begin to design guts for it. One would expect a cartridge enclosure to come in halves that can be fastened together somehow. ?Anyway I would still be interested in the completed thing if the price is not prohibitive. |
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Re: DX7 ROM Card with 256 x 32 patches
Hi everybody,
Back from work ;-) Thank you all for your comment, sure? it'll help me to improve my design ! @Ramiro & Daniel I join to this message the list of the SYSEX I've included in my .BIN...Some are well known ( it begins with the 4 ROM banks supplied by Yamaha ), and other are pretty exotic, their name will tell you not much ( remember I picked the up randomly...). This list was created by my now-enhanced Python script which automatically build the .txt file as and when you add a SYSEX to the whole .bin file. As Daniel said, you can tell or send me the SYSEXes you want to be included in the EPROM and I'll burn them. @Jonas Thank you for your encouragement ! I'm still looking for the right way to make the card available on OSH Park...they talk about "shared projects", I guess it's related ;-)... As previously said, the shipping costs could be veeeeery expensive, so, due to them, I don't know for now how to keep the cost of a complete card in reasonable proportions. I guess a bare PCB could be sent as a letter and not a parcel, the price would be cheaper... @helfried2de sorry, someone said here the cartridge connector is not quite the same as the mk1 DX7's...I don't own a DX7II, so I can't build and test a dedicated design... @Grant & Jojol Of course an enclosure would be a top ! The Yamaha cartridge enclosure is too small....a C64 cartridge can be the right choice ! I'm not very skilled in 3D modelling, I'll leave the enclosure question to someone else ;-)... @aero sorry, I didn't mean in no way to interfere with your work ! And as Daniel told you, yours is a RAM card, not the same destination as mine... Chris. |
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Re: DX7 ROM Card with 256 x 32 patches
That seems rather harsh, Daniel.
Perhaps it was lost in translation, but it was fairly clear to me that this was more of a hobby project than a commercial one.? There is very little chance of him making a profit on it.? It seemed clear to me he was just offering to share what he'd come up with. Andy |
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Re: DX7 ROM Card with 256 x 32 patches
开云体育Sorry to say that it is only your fault, looks like some kind of bad marketing :-) Your last message on this forum about your card development came on May 6th 2016. I have never seen any announcement that your product was finished and ready for selling. You have sent some messages later, but your card was not mentioned there at all. You didn’t announce here where it is possible to buy it and how much it costs. No wonder there was little interest.? I considered it abandoned project and forgot about it. So could you please improve this situation and explain everything? Maybe it’s a good chance - not everybody needs ROM with 4096 sounds which has to be programmed in a special way. Maybe some users would be satisfied with compatible multibank RAM which can be used as standard RAM1 (possibility to save and load bank, or save just one patch, with protect switch)… Thanks for any info about your project. Daniel Forro
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Re: DX7 ROM Card with 256 x 32 patches
Nice job.
Has everyone forgotten my 8 x 32 patch RAM cartridge I designed and made over a year ago. It has a rotary switch to select the bank and works just like 8 original RAM4 cartridges. Admittedly it doesn't hold 4096 patches but is read/write with a write-protect switch. I made a decent size batch and advertised them on eBay but got very little interest; this was quite expensive and disappointing. I uploaded pics of the 3D model of the enclosure too. The original thread is: |
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Re: DX7 ROM Card with 256 x 32 patches
Do you mean an enclosure/case for it?? I don't think it comes with one now (and I'm fine with that).? But it would be great to have an enclosure too although it probably would mean some collaboration on the PCB so that the case fits and functions properly.
And as someone else mentioned the beveled edge on the PCB. |
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Re: DX7 ROM Card with 256 x 32 patches
开云体育If I understand well this is not normal RAM where you can can save banks or individual patches in standard way on DX7. It has to be programmed in EPROM programmer, and common SysEx bank data has to be converted before. So if Chris will not offer his card with some pre-programmed EPROM (for example with all original Yamaha ROM’s and some usual random garbage from the internet - because I don’t think he would make some order or patch categorization in it, it’s too much work, or maybe he can use DEXED archive), you have to send him your own patch selection (256 banks) what you want to have on the card, and he will program it. That means probably don’t expect you will get some “rom card ready for use”. Daniel Forro?
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Re: DX7 ROM Card with 256 x 32 patches
For longer lasting contacts ask your PCB supplier do 2 thing.
1) Cut a beveled edge on the PCB where the edge connector is. 2) have the contacts for the edge connector hard gold plated. These are standard operations and should not cost much. The beveled edge makes inserting the card easier and protects the edge of the contact fingers. The hard gold plating reduces the contact resistance and reduces contact wear. On Sun, September 17, 2017 6:02 am, christophe.perrod@... [YamahaDX] wrote: Hi daved@... |
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Re: DX7 ROM Card with 256 x 32 patches
开云体育I need to know exactly price in USA dlls Shipping & rom card ready to use Also how I can pay? Let me know Tks? On Sep 18, 2017, at 11:40 AM, grantbt@... [YamahaDX] <YamahaDX@...> wrote:
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Re: DX7 ROM Card with 256 x 32 patches
开云体育Hi & tks for answer Well I don't know to much about that? What I looking for is? Rom card just ready for load more Sysex Sounds to my ?dx7 ?You know better? I hope you understand? Tks On Sep 17, 2017, at 8:08 AM, christophe.perrod@... [YamahaDX] <YamahaDX@...> wrote:
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Re: DX7 ROM Card with 256 x 32 patches
Hi
Yes, rotatory hexa switches seem to be the ideal solution...the drawback is the price of such a component compared to cheap DIP switches... Furthermore, one of the additional benefits of DIP switches is the possibility to substitute the not often available 27C801 for a smaller one ( eg 27C512 ) as the pinouts are quite compatible; you just have to set one of the highest bit switch ON to supply power to the chip. Anyway, I'll work on a design embedding 2 rotatory switches, it's not huge work ;-)... ? Considering what Daniel very judiciously said, the card is not intended to be often extracted out of its slot, so a loss of contact is not expected in a even long time of use. Chris |
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Re: DX7 ROM Card with 256 x 32 patches
On Sun, 17 Sep 2017, strangemike1000@... [YamahaDX] wrote:
At the Yamaha forums the runner of "Sector101" is known as member 'shadowmask' - as you can see he uses such kind of rotary switch too - as wellI own such a card for my Yamaha V50. Very nice. -- MT |
AndyHornBlower
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