> I wonder if it is possible to use a RAM from a pc
> or at least a larger ram that can keep the data until
> it is downloaded to a pc.
> thanks for any help
> Ernst

You will have a lot of work to do to interface with the SIMMs, but
the cache SRAMs (usually 32k x 8) are simple and fast (under
30ns). They're just like ordinary SRAMs, eg a 62256, except in
a slimline package, ie 0.3" wide not 0.6", same pin-out, voltage
and low current power-down state. Most newish motherboards
will have anywhere from 1 to 9 of them, use as many as you need
in parallel and just select the one you want with CE. Check the
web for specs, some that I have with what I thought was a 32kB
part code are in fact 64kB, a little bonus

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