[vcf-midatlantic] S-100 protoboards

Jeff Galinat jgalinat at gmail.com
Fri Jan 14 20:59:05 UTC 2022

Jonathan & Herb,
  Thanks for clarifying. I knew the pin to pin spacing was .125” but I
thought the Altair was the only system that used the narrow row spacing.  I
learned something today.

On Fri, Jan 14, 2022 at 11:31 AM Jonathan Chapman via vcf-midatlantic <
vcf-midatlantic at lists.vcfed.org> wrote:

> > It was my understanding that only the Altair backplane had a different
> row
> > spacing for it's connectors. Everything that I have seen since (IMSAI,
> > Ithaca, TEI, CompuPro, Cromemco) used the same .250 row spacing.
> The Byte Shop BYT-8 and Polymorphic Poly-88 both use the narrower spacing
> too. I don't know if later Polymorphic systems do too. There are probably
> others. Haven't checked on my TDL stuff.
> Thanks,
> Jonathan

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