SMT PDP-8 (was Re: group buy for homebrew CPUs?)

vrs vrs at
Mon Aug 14 01:11:07 CDT 2006

From: "Ethan Dicks" <ethan.dicks at>
> On 8/14/06, Josef Chessor <josefcub at> wrote:
> > On 8/13/06, vrs <vrs at> wrote:
> > > the SMT modules down into the footprint of, say, an 18 or 20 pin DIP.
> > > wouldn't look much like a replica anymore, though.
> >
> > How about an 18 or 20 pin SIP?  Tricky to pull and replace repeatedly,
> > but you'd get the stand-out module look you're trying to achieve.
> And it would be *substantially* cheaper than dozens of 0.1" headers and

If I'm understanding you right, it would still be 0.1" spacing, and so still
nearly two inches long.  The original cards were only a little under 3.5",
I'm not sure the SIP would give the overall size reduction I was looking

I'm also not too clear why that would be substantially cheaper.  Is it
the header pins are gold plated?


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