Thanks for the info.

I don't need to make the bus tri-state since all data
will be latched or not latched into the devices only
when I asked ... right?

Thanks



> That's not difficult. It might be more difficult
> finding
> them. DigiKey and Mouser never seem to have the size
> I
> want in stock. Any of the parallel RAM chips you can
> find/salvage should be useable. You might have
> better
> luck at jameco if you want a small quantity of DIP
> versions.
>
> most of the SRAM chips have parallel address and
> data
> lines. To control, there is typically a /CE (chip
> enable)
> and a /WE (write enable). Some also have /OE (output
> enable - used to tristate the data lines for bus
> systems)
>
> If you're wanting to put it on the IDE bus, you
> probably
> want a version that has the /OE signal such as
> CY62256.
> It's rather large for only using 512 bytes, but it's
> typical of the interface used by other chips.
>
> hope that gets you started in the right direction.

=====
MJ Brush
LeftClick.ca Internet Media Services
mbrush@[NOSPAM]leftclick.ca

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