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Posted by Clif on January 18, 2006, 1:02 pm
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Marc F Hult wrote:
> This anonymous poster asked the same question in comp.home.automation. I'll
> post my reply here again -- Marc
>
>
>> Does anyone have a Napco P9600 that they can easily look under the metal
>> processor shield? (i.e. The cover for the memory firmware, RAM, etc.)
>
> Yes I do.
>
>> I need to know the part number and manufacturer for the RAM chip. (Facing
>> the controller in its mounted orientation, it would be the rectangular
>> chip just above the firmware ROM.)
>>
>
> It's ... mumble, mumble....
>
> Why do you need to know?
I have a P3200 that I bought a while back and tried to upgrade it with a
GEM-AUTOMATION kit that I bought from Smarthome. It was advertised that
it would work on my panel. After discovering that it wouldn't and that
only OLDER P3200's worked with this, I started digging. This
GEM-AUTOMATION kit appears to only work on P9600's now. I also noticed
that the specs and the board on the P9600 looks strangely similar to my
P3200. My guess is that the P9600 has more memory and probably nothing
more.
>
> Those .600 DIP static rams can be easily 'double-decked' and because the
> fanout of the associated circuits can handle the additional load, one could
> substitute the entire original chip with a new one with _its_ data by
> disconnecting the CS on the original chip -- or make a copy of the data on
> the original chip
>
> One has to wonder what legitimate reason there would be for an anonymous,
> first-time usenet poster to do this if (especially) s/he doesn't have ready
> access to the panel.
>
> ... Marc
> Marc_F_Hult
> www.ECOntrol.org
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