Was Chip carrier now sockets

[Guenther,Max [ASCO/PA]]

And I believe that was Confederate sub!

Born and raised in SC.  (December 20 1860 we declared our independence and
were the first to back it up against the oppressive Yankee forces at Fort
Sumter)

Max

Yea I know we lost;-)

> ----------
> From: 	Bruce Plecan[SMTP:nacelp at bright.net]
> Reply To: 	gmecm at diy-efi.org
> Sent: 	Tuesday, August 08, 2000 11:33 PM
> To: 	gmecm at diy-efi.org
> Subject: 	Re: Was Chip carrier now sockets
> 
> Thanks
> Makes sense now
> Grumpy
>   They raised the Hunley today.  First sub to sink another ship in time of
> war.
> 
> 
> > Bruce Plecan wrote:
> > > What exactly are you doing / making?.
> > > I'm lost here
> > > Grumpy
> > The 1227748 ECM is a P4, but uses a bare socket and one of those black
> > plastic clips, like a 747, instead of a memcal, like the other P4s.
> > It's also a 28 pin socket instead of a 24 like the 747.  On a 747 you
> > can remove the funny GM socket and put in a ZIF, but on the 748 the
> > holes are .475 inches apart rather than .6 inches, so a regular socket
> > won't fit.  Steve is making a little PC board with holes at .475 and
> > .6", as an adapter, so you can put a regular socket in.  Seems like they
> > might only be useful for the 1227748, though.
> > --steve
> > > > Hmm, with out measuring my 7747, I had some spare in^2 on some PCBs
> I
> was
> > > > having made, so I made some 0.6" to 0.4" and 0.5" adaptors.  As you
> know,
> > > > my 7747s don't need them :-)  As long as I was doing it, I put a pad
> for a
> > > > 1206 surface mount deglitching cap and a power LED (to warn you not
> to
> > > > pull the chip w/ led on).  Now I see that the real dimension is
> 0.475.
> > > > Well, I'll have 24 of these boards show up tomorrow, and I won't
> need
> any.
> > > > Could you use some?  I even bought some MilMax type spacers to go
> from
> the
> > > > origional socket holes to the adaptor.  I'll have some space on
> another
> > > > PCB this week, so I might make some more of the correct spacing.
> Since
> > > > I don't need them, I guess I'll offer the rese to the list.
> > > >
> > > > - Steven Ciciora
> > >
> >
> >
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> > --
> > Steve Ravet
> > steve.ravet at arm.com
> > ARM,Inc.
> > www.arm.com
> >
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