[Coco] CoCo vs EMP WAS--> Re: Coco Digest, Vol 24, Issue 48

[Tony C]

How could that be?
The early shuttles ran OS9 on at least one of the flight computers, so there 
must have been other processors running.

On 9/13/05, jdaggett at gate.net <jdaggett at gate.net> wrote:
> 
> MArk
> 
> The first microprocessor in space abord the Shuttle for experiments
> was an RCA 1802. Being CMOS and could indure the harsh
> radiation of space, it powered some of the first experiments in the
> Shuttle bay.
> 
> james
> 
> On 13 Sep 2005 at 16:18, Mark Marlette wrote:
> 
> Date sent: Tue, 13 Sep 2005 16:18:23 -0500
> From: Mark Marlette <mark at cloud9tech.com>
> To: coco at maltedmedia.com
> Subject: Re: [Coco] CoCo vs EMP WAS--> Re: Coco Digest, Vol 24, Issue 48
> Send reply to: CoCoList for Color Computer Enthusiasts <
> coco at maltedmedia.com>
> <mailto:coco-request at maltedmedia.com?subject=unsubscribe>
> <mailto:coco-request at maltedmedia.com?subject=subscribe>
> 
> > james,
> >
> > Rad harden **might** still be a requirment for certain
> > devices/applications. I work for a defense contractor and we design
> > weapon system for the future. DOD has removed many of the requiremnts
> > for qualified parts. In the past we used ALOT of rescreened
> > components. Normal parts that are tested/screened and certified. Take
> > a $0.25 part and it becomes $125. Commercial/Industrial parts yields
> > are so good that the add cost couldn't be validated. Most of the
> > common electrical assemblies are call COTS(Consumer Off The Shelf)
> > components.
> >
> > Control system is still our design. Electrical motor drives switching
> > 1000A RMS at 650v 3 phase bus voltages.......... :)
> >
> > Mark
> >
> > Quoting jdaggett at gate.net:
> >
> > > Rogelio
> > >
> > > There are chambers set up to test semiconductors for EMP.
> > >
> > > IN fact a lot of CMOS devices will qualify. If I recall CMOS is more
> > > immune than NMOS or PMOS to such events. Still the military in many
> > > key equiptment use what is called radiation harden semiconductors.
> > > One other method would be to enclose your Coco in a magnetic
> > > shielded box that would supply around 100 dB of isolation.
> > >
> > > james.
> > >
> > > On 13 Sep 2005 at 15:03, Rogelio Perea wrote:
> > >
> > > Date sent: Tue, 13 Sep 2005 15:03:47 -0400
> > > From: Rogelio Perea <os9dude at gmail.com>
> > > To: coco at maltedmedia.com
> > > Subject: [Coco] CoCo vs EMP WAS--> Re: Coco Digest, Vol 24,
> > > Issue 48 Send reply to: CoCoList for Color Computer Enthusiasts
> > > <coco at maltedmedia.com>
> > > <mailto:coco-request at maltedmedia.com?subject=unsubscribe>
> > > <mailto:coco-request at maltedmedia.com?subject=subscribe>
> > >
> > > > It'd be interesting to somehow rig an EMP test vault and check out
> > > the
> > > > CoCo capacity to withstand such an event...
> > >
> > >
> > >
> > > --
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> > > http://five.pairlist.net/mailman/listinfo/coco
> > >
> >
> >
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> 
> 
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