Casio CZ/ VZ/ FZ - Pro Series

It would be easy to make a larger capacity card: just get a bigger RAM chip 
(1 Mbit would give you 4 banks), and use DIP switches or something for the 
additional address lines.  Or, multiple chips could be stacked and switched 
using the CS line.  It just depends on what chips are available.  I think 
the only hard part would be finding a suitable connector.

Do you have a schematic for the ROM cards?  I think it would be possible (if 
not particularly pretty) to use a ROM card as a starting point (making 
changes to account for the difference in the way ROM/RAM cards are 
detected).  If the ROM chip has a CS line, it would probably be pretty 
simple to add a switch to choose either ROM sounds or RAM sounds.


>From: "gmeredith1" <gmeredith1@...>
>Reply-To: CZsynth@yahoogroups.com
>To: CZsynth@yahoogroups.com
>Subject: [CZsynth] Make your own Casio VZ/PG RAM card!!
>Date: Fri, 01 Jun 2007 02:17:00 -0000
>
>Hi Everybody!
>
>I've managed to get hold of the schematics for the very rare RA500 RAM
>card, used in the Casio VZ1/10M/8M and the Casio PG guitar synths,
>thanks to Steve at the EZ-VZ forum website. It will now be possible to
>make one of these RAM cards yourself for about $20!!
>
>I'm in the process of making up a step-by-step guide with photos, which
>I will upload to the FILES section here when I've finished them. In the
>meantime, for anyone who's good with electronics, I've uploaded the
>RA500 card schematics there, along with datasheets and other info, so
>you can start straight away!!
>
>Cheers, Graham
>
>

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