On Thu, 26 Feb 2004, Nico de Jong wrote: Maybe the LR56637 is the model of the interface? -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

On Thu, 26 Feb 2004, Nico de Jong wrote: Those are generally refered to as IDC connectors. I wish I knew what IDC stood for. I'm not willing to take a guess right now, though I think I am close. I've seen Archive drives equipped with either IDC or edge-type connectors, and the model number usually indicates which type of connection it has. For instance, an Archive 2150S is SCSI with a 50 pin IDC, whereas an Archive 2150L has, I believe, an edge connector -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

Jay> Sellam wrote... Jay> IDC = Insulation Displacement Connector Jay> look at the way the ribbon cable attaches to the connector and Jay> the name will make sense. Note that IDC does not refer to the Jay> type of connector, rather, how the cable connects to that Jay> connector. I have seen DB25, Edge card, Berg, all different Jay> types of connectors that are IDC. Jay> I once ran across an article stating the "expected life" of IDC Jay> ribbon cable connections. It was suprisingly low, like 64 Jay> connect/disconnect lifespan. That's about 63 more than I would expect. Those things really are not meant to be reused. There's an analogous technology in connectors for printed circuit boards. Those are "press fit" connectors -- the pins have springy sides that wedge into the plated through holes. Backplane connectors are often done that way, and larger connectors in general in these modern surface-mount days because they avoid a through-hole soldering step. But again, the assumption is that you install those exactly once. paul

On Thursday 26 February 2004 13:21, Vintage Computer Festival wrote: Insulation Displacement Connector. That refers basically to any connector that can be crimped onto a cable like ribbon cable connectors, for example. Pat -- Purdue University ITAP/RCS --- http://www.itap.purdue.edu/rcs/ The Computer Refuge --- http://computer-refuge.org

Insulationm Displacement Connector (or something very like it). It refers to the way that the ribbon cable (flatcable) is connected to the connector, without having to strip off the insulation first. IDC connectors are available in many forms. The ones you're thinking of are presumably the 2 row header sockets (as are used on, say, IDE hard drives). But IDC connecotrs are also made as edge connectors (to fit over a PCB card edge), D connectors (all sizes from DE9 to DD50 -- the last is darn expensive due to the fun of getting 3 rows of pins to connect to the cable correctly), DIL header plugs (that would fit into IC sockets), DIL sockets (not common), 2 row header plugs, Blue ribbon connectors, transition connectors (these are designed to be (permanently) soldered to a PCB after the cable had been crimped in, and avoid having to strip, tin, get into the right hole, and solder 50 wires!, and doubtless more that I've never come across. -tony

That drive was one of the few supported by early Pick O/S R83. I know the controller settings are documented in the manual, not sure about drive settings. I'll check this weekend. Jay ----- Original Message ----- From: "Nico de Jong" <nico(a)farumdata.dk> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk(a)classiccmp.org> Sent: Thursday, February 26, 2004 5:25 AM Subject: Archive 5945C some --- [This E-mail scanned for viruses by Declude Virus]