> Anyone seen those before, and is it actually SCSI, or is it something else?

Common on old Sun SCSI stuff, it's a DD-50. Could be something else, but they were indeed used for SCSI termination.

On Aug 4, 2023, at 10:10 PM, Jonathan Chapman via cctalk <cctalk(a)classiccmp.org> wrote: Common on old Sun SCSI stuff, it's a DD-50. Could be something else, but they were indeed used for SCSI termination. Thanks, Jonathan

On 8/6/23 14:08, Paul Koning via cctalk wrote: cctalk(a)classiccmp.org> wrote: else? but they were indeed used for SCSI termination. except the biggest one (DD), standard is two rows and HD is three. But DD has three rows in the standard density and 4 rows in high density. DC62 was used in several tape drive controllers. --Chuck

The answer to the question about the DB-25 connector (and others) can be found here, if one trusts Wikipedia. https://en.wikipedia.org/wiki/D-subminiature No, DEC did not invent it, Cannon did. —Milo > On Aug 11, 2023, at 2:06 PM, Steve Lewis via cctalk&lt;cctalk(a)classiccmp.org&gt; wrote: > > While probably unrelated, the mentioning of 3 rows of pins did remind me > about what I recently learned about the 1973 IBM SCAMP... > > On the back side of it, it has a 3-row of 14-13-14 female pins (next to > what became a DB25 connector - did DEC come up with DB25??). > > Was curious if anything ideas on what that 3-row might be for. The photo > should be here: > https://voidstar.blog/scamp-a-review-50-years-later/#jp-carousel-6400 > > -Steve > > > > On Sun, Aug 6, 2023 at 4:35 PM Chuck Guzis via cctalk&lt;cctalk(a)classiccmp.org&gt; > wrote: > >> On 8/6/23 14:08, Paul Koning via cctalk wrote: >>>> On Aug 4, 2023, at 10:10 PM, Jonathan Chapman via cctalk < >> cctalk(a)classiccmp.org&gt; wrote: >>>>> Anyone seen those before, and is it actually SCSI, or is it something >> else? >>>> Common on old Sun SCSI stuff, it's a DD-50. Could be something else, >> but they were indeed used for SCSI termination. >>>> Thanks, >>>> Jonathan >>> The D-sub shells come in standard and high density flavors. For all >> except the biggest one (DD), standard is two rows and HD is three. But DD >> has three rows in the standard density and 4 rows in high density. >> >> DC62 was used in several tape drive controllers. >> >> --Chuck >> >> >>

On Fri, 11 Aug 2023, Nigel Johnson Ham via cctalk wrote: But is wikipedia still correct in the label of the picture of connector for a Macintosh external floppy drive, that they are calling a "DB-19"? https://en.wikipedia.org/wiki/File:Mac512k-rear_DB-19_Smartport_(cropped).j… https://en.wikipedia.org/wiki/D-subminiature#Other Or, is it correct to refer to anything between DA and DB as "DB"?? (such as "DB-23" on Amiga?   Yes, I dremeled a DB25 to fit.) -- Grumpy Ol' Fred             cisin(a)xenosoft.com

On 8/11/23 16:08, Fred Cisin via cctalk wrote: Atari ST also used strange shell/pin count connectors. Calling them DB is obviously not correct--calling them DB-ish might be closer to fact. FWIW, they're pretty hard to find nowadays.

> Or, is it correct to refer to anything between DA and DB as "DB"?? > (such as "DB-23" on Amiga?   Yes, I dremeled a DB25 to fit.)

Atari ST also used strange shell/pin count connectors. Calling them DB is obviously not correct--calling them DB-ish might be closer to fact. FWIW, they're pretty hard to find nowadays.

On Fri, 11 Aug 2023, Fred Cisin via cctalk wrote: They are: <https://www.soigeneris.com/amiga-db23f-video-connector-new>. People never give up on these things as this is not the first reference I have come across in the recent years about this connector being made new. I can't find the previous one, but overall I find it quite reassuring.

I wonder if these are from a group buy not long ago, where someone got a manufacturer to gin up a lot of them (minimum order was something like 1,000).