Re: [amsat-bb] Flight Computers

[Mike Murphree <w4lna@xxxxxxxxxxx>]

On Monday 29 April 2002 07:43 pm, Margaret Leber wrote:

> But being a Java fanatic myself, I don't want to start a holy war here.
> As I recall though, the last of the rad-hardened 1802s went into AO-40,
> and no more will be manufactured. So that's a non-issue; amateur
> spacecraft going forward *will* use another archetecture.

Not so fast there Maggie...  PICs have been implemented in FPGAs
and it would be entirely possible to implement the 1802 architecture
in one as well.  Finding a good databook to work from might be a
little difficult though...

For the military market, the PowerPC chips are starting to look real
promising and will be replacing DSPs in a number of applications.
I seem to recall seeing a radiation-hardened version recently too.
I think the bottom line is driven by how much power you can generate
from solar cells on a 9" cube however.

Mike
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