From mboxrd@z Thu Jan 1 00:00:00 1970 From: athornton at gmail.com (Adam Thornton) Date: Thu, 27 Feb 2020 19:12:30 -0700 Subject: [COFF] 52-pin D-Sub? In-Reply-To: <905CE999-5601-4521-847B-B2146C60B564@serissa.com> References: <905CE999-5601-4521-847B-B2146C60B564@serissa.com> Message-ID: Yeah, 0.075" pin centers, does appear to be the ITT Cannon part. Now what experiment used them, and _why_ (I mean, surely 68-pin SCSI would have done the trick as well and been muuuuuuch cheaper), I don't know. Adam On Thu, Feb 27, 2020 at 6:37 PM Lawrence Stewart wrote: > Huh. New to me too, but Digikey links to the datasheets, and they really > do mean DB. > They go up to DD100. They are called “double density”. > > This reminds me of the circa 1990 “HIPPI” interface, or high performance > parallel interface. They typically ran at 50 MB/sec. The connectors were > two-row 100-pin D style. See > http://www.elpeus.com/scsi-cables/100pin-scsi-cable-hippi/3m-100pin-male-to-100pin-male-scsi-cable-hippi/ for > example. > > We used these cables and connectors on the first Alpha machines at Digital > to connect the 3Max front end processor to the ECL based Alpha > Demonstration Units, although the protocol was different. The connector > was about the biggest that would fit on a TurboChannel I/O card. > > > On 2020, Feb 27, at 7:04 PM, Dave Horsfall wrote: > > On Thu, 27 Feb 2020, Adam Thornton wrote: > > I recently have pulled out of the trash a plugboard with a male and a > female D-Sub 52 connector. 3 rows of pins, 17-18-17. I took the > connectors off the board: there's nothing back there, so this thing only > ever existed so you could plug the random cable you found into it and its > friends to see what the cable fit. > > > That would be something like a DD-52P (certainly not a DB-52P!). > > I can't find much evidence that a 52-pin D-Sub ever existed. > > > Well, Digikey seem to have them: > > > http://www.digikey.com/product-detail/en/itt-cannon-llc/2DB-52P/2DB-52P-ND/4734668 > > No photo, though... > > -- Dave_______________________________________________ > COFF mailing list > COFF at minnie.tuhs.org > https://minnie.tuhs.org/cgi-bin/mailman/listinfo/coff > > > _______________________________________________ > COFF mailing list > COFF at minnie.tuhs.org > https://minnie.tuhs.org/cgi-bin/mailman/listinfo/coff > -------------- next part -------------- An HTML attachment was scrubbed... URL: