Update time! (Also happy new year!) I have a bunch of assembled panels now, I'll have to do some final assembly next weekend and then we can start taking orders \o/ There's been a problem with the circuit boards this time and a large part of the raw cards was marked faulty right out of the factory, ...

Nobody besides dojoe and me can possibly know, and even we don't know :D I'd like to correct my partner's statement because I know things he does not, namely that I received shipping confirmation for a new batch of bare PCBs yesterday :) I have a time slot at our assembly house for early December, ...

Avro_Arrow wrote: ↑

Thu Jan 16, 2020 1:21 am

I'm a wimp, I know.

But you also opt out of a buttload of headaches

Good luck with your project, let us know how it goes!

Hah, yeah, the 16A won't do you much good :) The D-50 uses 256kbit, i.e. 32kbyte, so that's A0 thru A14. Our card uses a 4mbit chip and supplies A15 thru A18 from the slide switches. Note that ordering the address bits in this way is not really necessary - you can freely rearrange address bits as yo...

More precisely, we have two SP4T slide switches on the card. For each of those, the 1 position is left open, and the 2, 3, 4 positions have separate lines attached to them. The switch common is attached to VDD and each of the three lines is individually pulled to GND via a 10k resistor array. This g...

Curious, are these cards also capable of being used to replace PCM cards? Or only the data cards? Forgive me if this is a stupid question or has been answered already. Not stupid at all :) It's been asked before but it's hidden deep inside the bowels of this thread ;) The cards can be used for PCM ...

I've got good news and bad news! The good news is: We've got new stock of 140ish cards! :mrgreen: The bad news is: Due to a computer mishap (we blame PHP!) we lost all your pre-registrations so we can't send you an email to tell you about the good news :( So if you're reading this, go and place you...

Is W/E only a command line from D-50 to card, and M/R the line which tells to the synth the card is protected ( as it was told somewhere on this post ) ? The WE/CE/OE lines are control lines from the synth to the RAM chip - it's a typical SRAM interface, even though the polarity of CE is reversed c...

I have a Roland VG-8 Expanded and I'm interested in helping you make the card compatible with this unit. Are you still interested? It would certainly be technically interesting, but I don't have the time any more to spend on fully figuring the VG problem out, changing the card layout and going thro...

shipping will be between 5€ and 40€ depending on where you are and whether you want insured shipping. Good news! We found (as in "were pointed to") a much cheaper shipping option so we can offer worldwide shipping with tracking and insurance for 10€! The 5€ option without tracking and insurance wil...

Howdy, so as jojo already mentioned I made a parameter RAM expansion module compatible with the Kurzweil K2500 because we didn't think people should have to pay upwards of 100$ for an extension that's 10 bucks worth of parts at today's technology. I just open-sourced that card today - check out the ...

Once I've got enough stock of completed cards, I can start taking orders -- around the end of September maybe? Quite literally so - 50 minutes to the end of September to be precise! :lol: We are taking orders again! I have 93 cards tested and ready to ship, with another 50 almost done. Hop on over ...

Look what came in the mail today: http://dojoe.net/images/mr-batch2-assembled.jpg 168 memory cards, assembled but still on panels. I'll have to find the time now to perform the final assembly steps (break the cards out of their panels, add guard wires to protect the slide switches, configure the car...

There's another batch of cards in the pipeline at the moment, but as jojo pointed out, we cannot give you any dates yet. Don't spend all your money on other things yet though

DANKE SCHOEN, dojoe and ʝɵʝɵ, for all your hard work in making this happen! I bought my D-50 earlier this year and hoped to get a multi-bank RAM card, and just found out about your years-long effort, so this was perfect timing! Hey, glad you got it and it's making you a happy camper! :D (and the na...