[sdiy] Roland M-16C Memory Cartridge

Jack Jackson jackdamery at hotmail.co.uk
Mon Dec 2 14:33:46 CET 2013

I think so, this bro upgraded one from 16 to 64 by swapping out the IC

You want to have gold edged right, so it doesn't wear off easily and maintains good conduction?

The edge connector is just an engineering problem, but I don't think it's one that's unsolvable. One could 3D print the case. I guess the cost would be ~£10 each.

If this something people on this list would be interested in, how about collaborating to solve the remaining problems and do a small run of them?


> Date: Mon, 2 Dec 2013 14:22:27 +0100 
> Subject: Re: [sdiy] Roland M-16C Memory Cartridge 
> From: cheater00 at gmail.com 
> To: jackdamery at hotmail.co.uk 
> CC: synth-diy at dropmix.xs4all.nl 
> On 2 Dec 2013 14:17, "Jack Jackson" 
> <jackdamery at hotmail.co.uk<mailto:jackdamery at hotmail.co.uk>> wrote: 
>> Are there any examples of people building replacements for these? 
> There was this bro who built lots of new memory for Yamaha 
> synths http://www.sector101.co.uk/ 
>> This photo shows how simple the circuits are. One TC5517APL-2 CMOS 
> static RAM IC (2048 word by 8 bit), a battery, a switch, two resistors 
> and a diode. 
> http://www.joness.com/gr300/pics/M-16C/Roland_M-16C_Battery_Replacement_05.JPG 
>> I assume there is no configuration done to the RAM, it's done in 
> parallel from the synth. You can still get the RAM chips on ebay, so I 
> presume you could build a direct clone. 
> I could use some more M-64C myself. I assume it's the same thing, just 
> more RAM. The question is where to find the edge connector (looks 
> nonstandard) and cartridge case (not happy with running it open, but 
> worst case you can just heatshrink). 
> Cheers, 
> D. 		 	   		  

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