6 Dec
2006
6 Dec
'06
8:16 a.m.
Rumor has it that 9000 VAX may have mentioned these words:
I don't know how much times a flash memory can be
written. It might be OK to
make a bootable device from it.
Between 10K and 100K times - IIRC, CompactFlash has virtual sector mapping
with load-balancing to attempt to reformat the sectors evenly(ish). Dunno
about the others...
My concern is about how to make replacement RL02, RD53
or similar. Flash
memory might not be good for this purpose.
Depending on how often the machine is used, it may very well last a long
time... but if you're still worried: MRAM. The older 5V stuff has writes
into the millions, IIRC, and some new 3.3V stuff is listed as "nearly
unlimited" - you can interpret that as you wish... ;-)
Freescale (read: ustabeen-Moto) didn't list a maximum write life in their
datasheet for the 4Mbit part they sell.
Not the cheapest, but it's not outside of "affordability" IMHO.
Laterz,
Roger "Merch" Merchberger
--
Roger "Merch" Merchberger | "Profile, don't speculate."
SysAdmin, Iceberg Computers | Daniel J. Bernstein
zmerch at 30below.com |