Iff the solution was to use a Dallas RAM socket product that provides
battery backup for one of the AV's RAM chips, then we could save whatever we
wanted in that space. This would be a natural place to store timezone
information that would allow us automatically handle daylight savings
time.
You'd store the TZ
on the memory card. It sounds like the TZ is a completely
orthoganal issue here (I thought you were using the RTC chip somehow), so
lets drop it from this thread.
Of course there are some technical hurdles to address before getting too
excited about this and I haven't been convinced that a number stored in
battery backed RAM would meet the NY state requirements for a permanent
counter. It's just the only idea that I've had so far in how we might
handle this.
95% of the answer
to that is how we sell it to the cert people. Don't try to apply
too much logic to these kinds of requirments. They aren't logical to
start.
As for effort, it would require major restructuring of the AV's firmware
and complete system testing. I should sit down with Tab and work out
some details before estimating the effort involved. Off the top of my
head I suggested that Greg think on the order of $20K for software
development.
Fair enough.
I look forward to reading your synopsis on devel.
Ken
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