test-drb July 2006

test-drb@ccmp.vtda.org

204 participants
377 discussions

OT? Laptop drives in legacy IDE machines

by chrism3667＠yahoo.com

>> "What I want to do is use a modern 2.5" IDE drive in a >> legacy machine." >> >> How modern? What machine? XT or AT class? >2.5" drives are more modern than damn near any "legacy >machine" :> Umm, not really. I have several 20mb 2.5" drives in my possession. I would have to say that the drive itself qualifies as legacy. Regardless, there's a big difference between any laptop drive that was around in the late 80s and the 40gig unit in my inarguably modern Toshiba laptop. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years

NeXT slab questions

by compoobah＠valleyimplants.com

> Purely for the purposes of installing other software, I'd quite like to change >the system to prompt for a login name at startup though - anyone recall how to >do this? Setting a password for 'me' is the easiest way. You can change it in the preferences panel, or using the terminal (commands are almost exactly 4.3BSD, although strangely there is no 'uname') I believe there was another way by setting something in NetInfo or similar, but the password is the easy way. BTW root ships unpassworded (great security there - almost impossible to get at locally unless you know what you're doing, but no prompt for a password - and it stayed that way until Rhapsody). On another tangent - when in school I skimmed a book on NeXTs written very early on. For a while, anyway (this book covered the '030 cube only) NeXTSTEP used a 'black hole' for a trashcan. When did this change to the recycle arrows? (and why a recycle in NeXT and Windows? you're concieveably 'recycling' the disk space, but very definitely trashing the file. OTOH, the 'shredder' in CDE is equally confusing - I have never heard that it ever supported secure deletion, which is what a shredder implies).

18 years

Integrating a HSD-05AA SBB into a VAX 4000 - it can be done, and fairly easily.

by compoobah＠valleyimplants.com

Had a bit of a breakthrough on the quest to inexpensively get storage on the '4200 - if you take apart the HSD05 SBB and pull off the white sticker on the PCB there are solder pads for a 50-pin header on the DSSI bus side - whoopee! After disassembling the PCB from a dead hard drive (soaking them in an oven set at 375 is a great way to remove parts, but a bit smelly. For SMDs you can shake or scrape them off, a pair of pliers takes care of reluctant through-hole components) for the SCSI header, I soldered it in place. Now for a trip to the electronics store for a DIN-96 and a IDC 50-pin pin header (I'm going to wire up a SCSI cable with a F on one end to plug into the backplane, a F for the HSD, and a M to plug the bulkhead cable into). Now all I need to do is figure out power, mounting, and SCSI signal issues. For power, does anyone know about how much one ISE sled can source? I have one sled mounting the TK70, so I can wire up a multitap feed from there as long as it doesn't overload the sled. I don't think that the HSD, TK70 and one or two 3.5" drives will overload a sled that can support a 5.25" full height drive, but I'm not positive there yet. The easiest way to do SCSI would be to have a direct ribbon cable from the HSD to the drives. The slickest would be to feed it into the backplane as per the official instructions. If I did that, I'd have to pull the SCSI signals back off at the TK70 sled (it connects to the backplane SCSI instead of DSSI) and do a cable anyway, so at this point I'm thinking that the realism is not strictly necessary (only have the one sled). Everything is reverseable, the HSD could even go back in its SBB if necessary. Mounting is the last issue - for the drives I think I'll use metal sheet stock with a few holes drilled in it. Undecided for the board. DEC did a BA400 integrated HSD05 that sat in the QBUS bay and pulled power from the bus. The qbus-supplied power is not hacker-friendly, and i'm not sure what to use as a support (would probably use perfboard or acrylic, toyed with using stripped old PCBs). For convienience, I think I'll probably wind up mounting the HSD on the back side of one of the homebrew drive sleds. If it works (and is photogenic), I'll take pictures. Definitely more attainable than the $500 CMD SCSI cards.

18 years

IBM printer, resistor packs

by rtellason＠verizon.net

I have an IBM 4019 printer, with postscript card (I'm told). Does anybody know where I might find user or service manuals for this online? Also, I've got several tubes of some Beckman resistors packs, marked 1899-258-0 and can't seem to find any data on these, can anybody point me to where I might find some? -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin

18 years

Request - 300 x 512Mo-PC2700-AENEON-16 chips 32Mx8

by pierre.alouit＠promistel.com

Hello , I am looking for: - 300 x 512Mo-PC2700-AENEON-16 chips 32Mx8 - P/N: AED660UD00-500B98X - Target price: 34$ USD Best regards Pierre Alouit Promistel Industries mailto:pierre.alouit at promistel.com skype:pierre.alouit Msn: pierre.alouit at hotmail.fr AIM: palouit ICQ:6927567

18 years

Request - 300 x 512Mo-PC2700-AENEON-16 chips 32Mx8

by pierre.alouit＠promistel.com

18 years

NeXT slab questions

by julesrichardsonuk＠yahoo.co.uk

I'm just about to stick an OS on the newly-acquired NeXT Slab (thanks to local Freecycle list for providing, and Witchy for picking it up!) Questions: CDROM - do I need a 2048 bytes/sector one or 512 bytes/sector? (I have both available, but it just saves me guessing the type!) SCSI bus - in order to hang a (terminated, obviously) CDROM off the external SCSI connector, do I need to enable/disable termination on the system board somewhere, and/or enable/disable termination on the internal drive? (I'm not sure if the internal drive is one end of the SCSI bus, or just a short spur off the bus) Memory - Can these things take more than 32MB? Purely curious - I don't even know if such a thing as an 8MB 30 pin SIMM exists (this Slab currently has 8 x 4MB modules in it) (I did get manuals with this, but they're right at the bottom of everything else that's in the car!) cheers Jules

18 years

What exactly is a DEC 'Edited Options/Modules List'?

by aek＠bitsavers.org

> I have a couple but I don't completely understand them. They are an edited version of the list maintained by Dick Best at DEC which kept track of every part number DEC used. The unedited version has the responisble engineer and a bunch of other internal information as well.

18 years

Otrona Attache

by r_a_feldman＠hotmail.com

>Message: 15 >Date: Fri, 7 Jul 2006 01:19:03 -0700 (PDT) >From: steven stengel <tosteve at yahoo.com> >Subject: Otrona Attache > >Hmm, > >Is it true that the Otrona Attache won't boot if the >clock batteries are dead? > >Steve. Yes. That is my experience with an 8:16 when trying to boot into MS-DOS with an Autoexec.bat file to get the date and time. It's easy to open the case and change the batteries, though. Takes two A-76 button cells, IIRC. Bob

18 years

NeXT slab questions

by mtapley＠swri.edu

At 12:00 -0500 7/7/06, Jules wrote: >Hmm, well this machine is an '040 @ 25MHz, but with the 30 pin sockets. I'm >not sure if that's a Turbo or not? I always thought the Turbo was exclusively >an '040 @ 33MHz - but quite possibly it's *any* '040 slab regardless of speed? I don't believe there were ever any 68030 slabs. NeXT went to '040 in the cube before the slab came out. So the "Turbo" distinction refers to the chipset which accellerates memory access, etc. Most if not quite all "Turbo" machines also had the CPU clocked at 33 MHz. All of the official and unofficial documentation I've seen indicates 4 MB as the limit for 30-pin SIMMS, which limits your machine to 32MB (which is plenty for NS3.2, 3.3). However there are many places where NeXT did not officially support bigger SIMMS, but they worked fine. NeXTDimension cards, many of the 33 MHz CPU boards, etc. So it may well be worth a try if you can get a matched set of 4 bigger 30-pin SIMMs. Particularly if your machine is a hybrid more or less oriented to the 72-pin SIMM slots, it may expect greater depth per bank than 16 MByte. Corrections welcome, if anyone has better knowledge than I. -- - Mark Cell Phone: 210-379-4635 office: 210-522-6025

18 years

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test-drb July 2006