Casio CZ/ VZ/ FZ - Pro Series

On Sat, 2011-05-28 at 05:45 +0000, wjamesmeagher wrote:
> Shot in the dark question here . . . is it possible to use ROM
> cartridges for the CZ1 to store your own patches by erasing whatever
> sounds originally came on the ROM cartridge, or can you only store
> your own stuff on RAM cartridges?

ROM == "Read Only Memory", so no.  EPROMs can be erased by placing them
under a strong UV source (leaving them on a sunny windowsill doesn't
work, and leaving them outside just means they get blown off the
windowsill into the grass where they're hard to find - they still don't
get erased).  You could make your own ROM cartridges by blowing an EPROM
with the right data. pretty much whatever's stored in a RAM cartridge.

The RAM cartridge circuits are out there, so it may be possible to
remove the ROM from a ROM cartridge, replace it with a RAM chip (they
have similar pin layouts) and adapt the rest of the circuit to suit.

Gordon MM0YEQ