[sdiy] Yamaha GS/CS card reader?

[The Old Crow]

  One of my uncompleted projects is a GS-1 ROM library made up by using my 
GS-1 reader to load voices into some DS1220 non-volatile RAMs, transplant 
the RAMs into my programmer, then store the voice sets as .bin files.  I 
got as far as installing DS1220s into the controller board but due to the 
very strange power supplies of the GS-1, the DS1220s won't enable.  I need 
to power them from a supply that provides about 0.5V more (negative) than 
what the RW board provides.

  Anyway, with the voices thus turned into useful files, they can be put 
into ROM alongside enough microconroller code to emulate the card reader 
I/O.

Crow
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On Fri, 27 May 2005, Tim Parkhurst wrote:

> I think the CS-40m used the same funky little mag card reader.
> Unfortunately, both the CS-40m and the CS-70m are about as common as hen's
> teeth. Perhaps a modern magnetic 'credit card' reader could be adapted to
> read and write the GS-2 cards? There's a great magazine out (just had its