On Fri, 2 Apr 2004 14:36:49 -0800, "Tarver Engineering"
wrote:


"Harry Andreas" wrote in message
...
In article , John Cook
wrote:


Just the official reports!!, Lockheed has only purchased enough
processors for 155 F-22's because there out of production, the demand
for Air to ground operations has increased the demand on processing
power, something the original processors are not quite upto hence the
_need_ for the 'upgrade'.

So the processors are obsolete, (too old)... the Avionic architecture
needs to be replaced before the F-22 can become the F/A-22 because the
present system is based on the old processors and rewriting the code
is pointless on an obsolete system, that would only support half of
the F-22 fleet

Methinks there's some confusion there between processors, avionics
architecture, and software.
While it's true that Intel tried to shut down i960 production causing a
chinese fire drill, there are enough assets to get by until a new
processor is
ready.

Intel has agreed to provide mil-spec i960s, thanks to a very fat check from
USAF. The new processor has already failed to be integrated, due to a loss
of tracability. (ie scrap)

That has nothing to do with the avionics architecture, which is
not changing. Plus the whole point of writing all the OS and AS in Ada
was
to be as platform independent as possible, so that upgrades to the CIP
could be relatively painless and not force re-flight testing of the A/C.
Ideally, one would not re-write the code, but re-compile the code for
the new platform, then do a LOT of integrity checks, and take it from
there...

They have to go with a more COTS based system (similar to, if not the
same as the JSF), which they are working on now, for fielding in (very
optomisticlly) in 2007.

Other than using commercialy available processor chips, what is "COTS"
about it?
Hint - nothing.

Wrong. Name for us the one and only modern processor that is mil-spec,
Harry.



I don't know if it's milspec but ISTR reading that Intel donated the
Pentium 1 design to the US military to do with as it pleased. I also
remember reading an article on some Russian naval electronics in which
the advertiser was boasting that they were "Pentium" powered.